US20040155828A1 - Antenna control system - Google Patents

Antenna control system Download PDF

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Publication number
US20040155828A1
US20040155828A1 US10/764,723 US76472304A US2004155828A1 US 20040155828 A1 US20040155828 A1 US 20040155828A1 US 76472304 A US76472304 A US 76472304A US 2004155828 A1 US2004155828 A1 US 2004155828A1
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Prior art keywords
phase shifter
antenna
phase
drive means
relative
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US10/764,723
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William Heinz
Mathias Ehlen
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Commscope Technologies LLC
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Andrew LLC
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Application filed by Andrew LLC filed Critical Andrew LLC
Priority to US10/764,723 priority Critical patent/US20040155828A1/en
Publication of US20040155828A1 publication Critical patent/US20040155828A1/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00Antenna arrays or systems
    • H01Q21/06Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/08Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/125Means for positioning
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/12Supports; Mounting means
    • H01Q1/22Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/246Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/32Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical means
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/005Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using remotely controlled antenna positioning or scanning

Definitions

  • the present invention relates to an antenna control system for varying the beam tilt of one or more antenna. More particularly, although not- exclusively, the present invention relates to a drive system for use in an antenna which incorporates one or more phase shifter.
  • Panel antennas such as those to which the present application is concerned, are often located on the sides of buildings or similar structures. Mechanical tilting of the antenna away from the side of the building increases the susceptibility of the installation to wind induced vibration and can impact on the visual environment in situations where significant amounts of downtilt are required.
  • electrical beam steering can be effected by introducing phase delays into the signal input into radiating elements or groups of radiating elements in an antenna array.
  • phase delay techniques including inserting variable length delay lines into the network feeding to the radiating element or elements, or using PIN diodes to vary the phase of a signal transmitted through the feeder network.
  • phase shifters such as those described in PCT/NZ94/00107 are adjusted mechanically by sliding an external sleeve along the body of the phase shifter which alters the relative phase of the signals at the phase shifter outputs.
  • a typical panel antenna will incorporate one or more phase shifters and the present particular embodiment includes three phase shifters.
  • a signal is input to the primary phase shifter which splits the signal into two signals having a desired phase relationship.
  • Each phase shifted signal is then input into a secondary phase shifter whose outputs feeds at least one radiating element.
  • a progressive phase shift can be achieved across the entire radiating element array, thus providing a means for electrically adjusting the downtilt of the radiated beam.
  • Other phase distributions are possible depending on the application and shape of the radiated beam.
  • Beam tilt may be produced in any desired direction.
  • variable differential phase shifters provide a continuous phase adjustment, in contrast with the more conventional stepped phase adjustments normally found in PIN diode or stepped length delay line phase shifters.
  • phase shifter array In a panel antenna of the type presently under consideration, it is desirable to adjust the entire phase shifter array simultaneously so that a desired degree of beam tilt may be set by the adjustment of a single mechanical setting means.
  • the mechanical drive which performs such an adjustment must result in reproducible downtilt angles and be able to be adapted to provide for a number of different phase shifter array configurations.
  • the beam tilt of an antenna may be varied remotely to avoid the need for personnel to climb a structure to adjust antenna beam tilt.
  • a mechanical adjustment means for adjusting the relative phase shifts produced by a plurality of phase shifters connected to an array of radiating elements said mechanical adjustment means including:
  • second means for moving a first portion of a second phase shifter relative to a second portion of said second phase shifter to vary the phase difference between output signals from the second phase shifter, wherein the second phase shifter is fed from an output of the first phase shifter and the degree of movement of the second means is dependent upon the degree of movement of the first means.
  • movement of the second means results in simultaneous movement of a first portion of a third phase shifter with respect to a second portion of the third phase shifter wherein the third phase shifter is fed from an output of the first phase shifter.
  • the outputs of the second and third phase shifters are connected to radiating elements so as to produce a beam which tilts as the first and second means adjusts the phase shifters.
  • the movement of the first portion of the first phase shifter a first distance relative to the second portion of the first phase shifter results in relative movement between first portions of the second and third phase shifters relative to second portions of the second and third phase shifters of about twice the first distance.
  • the first means includes a gear wheel which drives a rack connected to a first portion of the first phase shifter, arranged so that rotation of the first gear wheel causes the first portion of the first phase shifter to move relative to the second portion of the first phase shifter.
  • the second portion of the first phase shifter is mounted to a carriage and the outputs of the first phase shifter are connected to inputs of the second and third phase shifters by push rods so that movement of the second portion of the first phase shifter moves the first portions of the second and third phase shifters with respect to the second portions of the second and third phase shifters.
  • a second gear is provided co-axial with and connected to a shaft driving the first gear which drives a rack connected to the second part of the first phase shifter so that rotation of the second gear causes movement of the first portion of the second and third phase shifters relative to the second portions of the second and third phase shifters.
  • the ratio between the first and second gear wheels is about 3:1.
  • the adjustment means includes a shaft and said first means includes a first threaded portion provided on said shaft and a first cooperating threaded member connected to the first portion of the first phase shifter.
  • the second means includes a second threaded portion provided on said shaft and a second cooperating threaded member connected to the first portion of the second phase shifter.
  • the arrangement is such that rotation of the shaft causes the first portion of the first phase shifter to move relative to the second portion of the first phase shifter at a rate of about twice that of the movement of the first portion of the second phase shifter relative to the second portion of the second phase shifter.
  • the second threaded member is connected to the second portion of the first phase shifter and moves the first portion of the second phase shifter via a push rod.
  • This push rod is preferably a coaxial line connecting an output from the first phase shifter to the input to the second phase shifter.
  • a third phase shifter fed from a second output of the first phase shifter via a push rod which moves a first portion of the third phase shifter in unison with the first portion of the second phase shifter.
  • an antenna system comprising one or more antenna including electromechanical means for varying the downtilt of the antenna and a controller, external to the antenna, for supplying drive signals to the electromechanical means for adjusting downtilt.
  • the system includes a plurality of antenna and the controller may adjust the downtilt for the plurality of antenna and store the degree of downtilt of each antenna in memory.
  • the controller may be controlled remotely from a control centre so that a plurality of such systems may be remotely controlled as part of a control strategy for a number of cellular base stations.
  • the electromechanical means varies the electrical downtilt of each antenna and means are included for monitoring the electromechanical means and providing signals representative of the position of the electromechanical means to the controller.
  • FIG. 1 shows a panel antenna incorporating a phase shifter drive mechanism according to a first embodiment of the invention.
  • FIG. 2 illustrates a primary phase shifter incorporating a gear rack.
  • FIG. 3 illustrates an exploded view of the adjustment assembly incorporated into the carriage.
  • FIG. 4 shows diagrammatically the operation of the drive mechanism according to the first embodiment.
  • FIG. 5 shows a panel antenna incorporating a phase shifter drive mechanism according to a second embodiment of the invention.
  • FIG. 6 shows the phase shifter drive mechanism of FIG. 5 in detail.
  • FIG. 7 shows the electrical connection of the motor, switches and reed switch of the drive mechanism shown in FIG. 6.
  • FIG. 8 shows a controller for controlling the drive mechanism shown in FIGS. 6 and 7.
  • FIG. 1 there is shown the back side of a panel antenna 4 having a first phase shifter 1 , a second phase shifter 2 , a third phase shifter 3 and a phase shifter drive mechanism S.
  • Feed line 6 is connected to input 7 of phase shifter 1 .
  • a first portion 8 of phase shifter 1 is moveable relative to a second portion 9 of phase shifter 1 .
  • Output signals from phase shifter 1 are supplied via lines 10 and 11 to inputs 12 and 13 of phase shifters 2 and 3 respectively.
  • Feed lines 10 and 11 comprise coaxial push rods which serve the functions both of feeding signals from the outputs of phase shifter 1 to phase shifters 2 and 3 and moving first portions 14 and 15 of phase shifters 2 and 3 relative to second portion 16 and 17 of phase shifters 2 and 3 respectively.
  • phase shifters 2 and 3 Signals output from phase shifters 2 and 3 are supplied via coaxial lines 18 , 19 , 20 and 21 to be fed to respective radiating elements (not shown).
  • first portion 8 of phase shifter 1 may be moved relative to second portion 9 of phase shifter 1 to change the relative phase of signals supplied via lines 10 and 11 to phase shifters 2 and 3 respectively.
  • First portions 14 and 15 of phase shifters 2 and 3 may be moved relative to second portions 16 and 17 of phase shifters 2 and 3 to vary the phase of signals supplied by lines 18 , 19 , 20 and 21 to respective radiating elements.
  • phase shifters 1 , 2 and 3 are adjusted in the correct respective portions the beam emitted by the antenna can be tilted as required. It will be appreciated that where a less defined beam is required fewer phase shifters may be employed.
  • first portions 14 and 15 of phase shifters 2 and 3 should move relative to the second portion 16 and 17 of phase shifters 2 and 3 at the same rate.
  • the first portion 8 of phase shifter 1 must however move relative to the second portion 9 of phase shifter 1 at twice this rate.
  • second portion 9 of phase shifter 1 is connected to carriage 22 . Movement of carriage 22 results in movement of first portions 14 and 15 of phase shifters 2 and 3 via push rods 10 and 11 .
  • Second portion 9 of phase shifter 1 is mounted to a carriage 22 which can move left and right. If carriage 22 is moved to the left first portions 14 and 15 of phase shifters 2 and 3 will be moved to the left via push rods 10 and 11 .
  • First portion 8 of phase shifter 1 may be moved relative to phase shifter 9 to vary the phase of signal supplied to phase shifters 2 and 3 .
  • a rack 23 is secured to first portion 8 of phase shifter 1 .
  • first portion 8 of phase shifter 1 may be moved to the left or the right.
  • a smaller gear wheel 25 is secured to and rotates with gear wheel 24 .
  • This gear wheel engages with a rack 26 provided on carriage 22 .
  • a further gear wheel 27 is provided which may be driven to rotate gear wheels 24 and 25 simultaneously.
  • Gear wheel 24 has 90 teeth whereas gear wheel 25 has 30 teeth. It will therefore be appreciated that rotation of gear wheel 24 results in first portion 8 of phase shifter 1 being moved three times as far as carriage 22 (and hence first portions 14 and 15 of phase shifters 2 and 3 ). However, as carriage 22 is moving in the same direction as the first portion 8 of phase shifter 1 it will be appreciated that the relative movement between first portion 8 and second portion 9 of phase shifter 1 is twice that of the relative movement between the first and second portions of phase shifters 2 and 3 . Accordingly, this arrangement results in the relative phase shift produced by phase shifter 1 being twice that produced by phase shifters 2 and 3 (as required to produce even beam tilting in a branched feed arrangement).
  • gear wheel 27 may be driven by any appropriate manual or driven means.
  • Gear wheel 27 may be adjusted by a knob, lever, stepper motor or other driven actuator.
  • a keeper 28 may be secured in place to prevent movement once the desired settings of the phase shifters have been achieved.
  • FIGS. 5 and 6 a second embodiment will be described. As seen in FIG. 5, the arrangement is substantially the same as that shown in the first embodiment except for the drive mechanism employed, which is shown in FIG. 6.
  • the drive mechanism includes a shaft 31 having a first threaded portion 32 and a second threaded portion 33 provided thereon.
  • a first threaded member 34 is connected to a first portion 35 of primary phase shifter 36 .
  • a second threaded member 37 is connected to the second portion 38 of primary phase shifter 36 .
  • First threaded portion 32 is of three times the pitch of second threaded portion 33 (e.g. the pitch of the first threaded portion 32 is 6 mm whereas the pitch of the second threaded portion is 2 mm). In this way, first portion 35 is driven in the direction of movement at three times that of second portion 38 . In this way the phase shift produced by primary phase shifter 36 is twice that of second and third phase shifters 39 and 40 .
  • Shaft 31 is rotated by motor 41 .
  • This may suitably be a geared down 12 volt DC motor.
  • the other end of shaft 31 is supported by end bearing 42 .
  • a reed switch 43 is provided to detect when magnets 44 pass thereby. In this way the number of rotations of shaft 31 may be monitored.
  • Limit switches 45 and 46 may be provided so that the motor is prevented from further driving shaft 31 in a given direction if threaded member 34 abuts a lever of limit switch 45 or 46 respectively.
  • Motor 41 may rotate shaft 31 in an anticlockwise direction, viewed from right to left along shaft 3 .
  • Threaded member 37 is driven by second threaded portion 33 to move push rods 47 and 48 to the left, and thus to adjust phase shifters 39 and 40 .
  • Threaded member 34 is driven to the left at three times the rate of threaded member 37 .
  • First portion 35 thus moves to the left at three times the rate of second portion 38 .
  • First portion 35 therefore moves relative to second portion 38 at twice the speed the first portions of phase shifters 39 and 40 move relative to their respective second portions. In this way, delays are introduced in the paths to respective radiating elements so as to produce an evenly tilting beam.
  • Components of the drive mechanism are preferably formed of plastics, where possible, to reduce intermodulation.
  • Threaded members 34 and 37 preferably include plastic links to phase shifter 36 to reduce intermodulation.
  • FIG. 7 shows how motor 41 , reed switch 43 and switches 45 and 46 are connected to lines 71 , 72 , 76 and 77 from an external controller.
  • Lines 71 and 72 supply current to drive motor 41 .
  • Section 73 ensures that if threaded member 34 is driven to either the left-hand side limit or the right-hand side limit it can only be driven in the opposite direction.
  • switch 45 directly connects line 71 to switch 46 via diode 74 .
  • switch 46 connects line 71 to motor 41 via diode 75 . This is the normal position of the switches when threaded member 34 is not at either extreme limit.
  • switch 45 When threaded member 34 is driven to the extreme left, for example, and actuates switch 45 , then switch 45 open circuits the path via diode 74 .
  • Diode 74 allows current flow in the direction allowing motor 41 to drive to the left. Accordingly, when switch 45 is open, motor 41 can only drive in such a direction as to drive threaded member 34 to the right (i.e.: current in the direction allowed by diode 75 ).
  • switch 46 is opened to break the path via diode 75 . This prevents motor 41 driving in such a direction as to drive threaded member 34 further to the right.
  • Lines 76 and 77 are connected to reed switch 43 so that the opening and closing of reed switch 43 may be monitored by an external control unit. In use, the opening and closing of reed switch 43 may be monitored to determine the position of threaded member 34 , and hence the corresponding degree of tilt of the antenna.
  • threaded member 34 may be driven to the extreme right.
  • An external controller may provide a current in one direction to motor 41 to drive member 34 to the right.
  • the motor will continue to be driven to the right until threaded portion 34 abuts switch 46 .
  • switch 46 When switch 46 is opened diode 75 will be open circuited, which will prevent the motor being driven further to the right.
  • the controller will sense that threaded member 34 is at its extreme right position as it will detect that reed switch 43 is not opening and closing. After a predetermined delay the controller may then provide a current in the opposite direction via lines 71 and 72 to motor 41 to drive it to the left. As the motor is driven to the left the controller will monitor the opening and closing of reed switch 43 to determine how far threaded member 34 has moved to the left. The controller will continue to move threaded member 34 to the left until reed switch 43 has opened and closed a predetermined number of times, corresponding to a desired angle of downtilt. Alternatively, member 34 may be driven to the extreme left and then back to the right.
  • Controller 80 may be provided at the base of an antenna site to allow an operator to adjust the tilt of a plurality of antennas at ground level, rather than requiring a serviceman to climb up the antenna structure and adjust each antenna manually.
  • controller 80 may be a hand-held unit which can be plugged into a connector at the base of an antenna to adjust antenna at a site.
  • Controller 80 may include a display 81 , an “escape” button 82 , an “enter” button 83 , an “up” button 84 and “down” button 85 .
  • display 81 may simply display a home menu such as “Deltec NZ Ltd ⁇ 1995”.
  • a base menu may be displayed including options such as:
  • the up/down keys may be used to move through the menu and the enter key 83 used to select an option. If “unlock controls” is selected a user will then be required to enter a three digit code.
  • the up/down keys may be used to move through the numbers 0 to 9 and enter used to select each number. If the correct code is entered “locked released” appears. If the incorrect code is entered “controls locked” appears and a user is returned to the home menu. If “set array tilt” is selected from the base menu the following may appear:
  • the up-down keys 84 , 85 may be used to select the desired array number.
  • the enter key accepts the selected array and the previously recorded angle of downtilt may be displayed as follows:
  • Controller 80 may then provide a current to motor 41 via lines 71 and 72 to drive threaded portion 34 in the desired direction to alter the downtilt.
  • the opening and closing of reed switch 43 is monitored so that threaded member 34 is moved in the desired direction for a predetermined number of pulses from reed switch 43 .
  • the downtilt for any other array may be changed in the same manner. If the controller is locked a user may view an angle of downtilt but will not be able to alter the angle.
  • the present angle of downtilt of the antenna may be determined.
  • the “measure tilt” function from the base menu, the following display appears:
  • the up/down buttons may be used to select the desired array.
  • the enter key will accept the selected array.
  • To measure the actual angle of downtilt controller 80 drives a motor 41 of an array to drive member 34 to the right. Motor 41 is driven until threaded member 34 abuts switch 46 .
  • the controller counts the number of pulses from reed switch 43 to determine how far threaded portion 34 has travelled. At the extreme right position the controller determines and displays the angle of downtilt, calculated in accordance with the number of pulses connected from reed switch 43 .
  • the controller then drives threaded member 34 back in the opposite direction for the same number of pulses from reed switch 43 so that it returns to the same position.
  • the angle of downtilt for each antenna may be stored in memory of controller 80 . This value will be updated whenever the actual angle of downtilt is measured in this way.
  • the “measure tilt” function may not be used if the controller is locked.
  • Controller 80 may include tables in memory containing the number of pulses from reed switch 43 , that must be counted for threaded member 34 to achieve each desired degree of downtilt. This may be stored as a table containing the number of pulses for each required degree of downtilt, which may be in 0.1° steps. This approach ensures that any non-linearities of the antenna may be compensated for as the tables will give the actual amount of movement required to achieve a desired downtilt for a given antenna.
  • the “enable array” function may be used to enable each array when installed.
  • the controller will be prevented from moving any array that has not been enabled.
  • Controller 80 will record in memory which arrays have been enabled.
  • the “disable array” function may be used to disable arrays in a similar manner.
  • the “lock controls” function may be used to lock the controller once adjustment has been made.
  • a “rack error” signal may be displayed if the array has not operated correctly. This will indicate that an operator should inspect the array.
  • Adjustment of the array may also be performed remotely.
  • Controller 80 may be connected to modem 86 via serial line 87 which may connect via telephone line 88 to a central controller 89 .
  • the controller 80 may be connected to a central controller 89 via a radio link etc.
  • the functions previously discussed may be effected remotely at central controller 89 .
  • adjustments may be made by a computer without operator intervention.
  • the system can be integrated as part of a control strategy for a cellular base station.
  • a remote control centre 89 may adjust the downtilt of antennas at a cellular base station remotely to adjust the size of the cell in response to traffic demand. It will be appreciated that the capability to continuously and remotely control the electrical downtilt of a number of antenna of a cellular base station may be utilised in a number of control strategies.
  • Central controller 89 may be a computer, such as an IBM compatible PC running a windows based software program.
  • a main screen of the program may show information regarding the antenna under control as follows: CURRENT NEW NAME TYPE ANGLE VALUE STATUS GROUP 1 antenna 1 1 south VT01 12° 12.5° setting antenna 2 1 north VT01 12° 12.5° queued antenna 3 1 west VTO1 12° 12.5° queued GROUP 2 antenna 4 2 south VT01 6° pending antenna 5 2 north VI01 P11 6° .5° nudging antenna 6 2 west VTO1 6° faulty
  • the antennas may be arranged in groups at each site.
  • Group 1 for example contains antennas 1, 2 and 3.
  • the following information about each antenna is given: Name: this is the user assigned name such as 1 south, 1 north, 1 west etc.
  • Type this is the antenna type which the controller communicates to the PC at start-up.
  • Current Angle this is the actual degree of beam tilt of an antenna which is communicated from the controller to the PC at start-up.
  • the controller also supplies to the PC each antenna's minimum and maximum angles of tilt.
  • New Value by moving a pointer to the row of an antenna and clicking a button of a mouse the settings of an antenna may be varied. When a user clicks on the mouse the following options may be selected:
  • Name the user may change the group or antenna name.
  • Adjust a user may enter a new angle in the “new value” column to set the antenna to a new value.
  • Nudge the user may enter a relative value (i.e.: increase or decrease the tilt of an antenna by a predetermined amount).
  • the controller may be instructed to measure the actual angle of tilt of an antenna or group of antennas.
  • an antenna is in a “fault” condition then it may not be adjusted and if a user clicks on a mouse when that antenna is highlighted a dialogue box will appear instructing the user to clear the fault before adjusting the antenna.
  • Each antenna also includes a field indicating the status of the antenna as follows:
  • Queued an instruction to read, measure, set or nudge the antenna has been queued until the controller is ready.
  • Reading when information about an antenna is being read from the controller.
  • Measuring when the actual degree of tilt of the antenna is being measured.
  • a further dialogue box may appear describing the action that has been instructed and asking a user to confirm that the action should be taken. This safeguards against undesired commands being carried out.
  • Information for a site may be stored in a file which can be recalled when the antenna is to be monitored or adjusted again. It will be appreciated that the software may be modified for any required control application.
  • Controller 80 may be a fixed controller installed in the base of an antenna site or could be a portable control unit which is plugged into connectors from control lines 78 .
  • the present invention may find particular application in antenna systems, such as those used in cellular communication systems.

Abstract

An antenna control system enabling the remote variation of antenna beam tilt. A drive means continuously adjusts phase shifters of a feed distribution network to radiating elements to continuously vary antenna beam tilt. A controller enables the beam tilt of a number of antenna at a site to be remotely varied.

Description

    THE TECHNICAL FIELD
  • The present invention relates to an antenna control system for varying the beam tilt of one or more antenna. More particularly, although not- exclusively, the present invention relates to a drive system for use in an antenna which incorporates one or more phase shifter. [0001]
  • BACKGROUND OF THE INVENTION
  • In order to produce downtilt in the beam produced by an antenna array (for example a panel antenna) it is possible to either mechanically tilt the panel antenna or electrically steer the beam, radiated from the panel antenna according to techniques known in the art. [0002]
  • Panel antennas, such as those to which the present application is concerned, are often located on the sides of buildings or similar structures. Mechanical tilting of the antenna away from the side of the building increases the susceptibility of the installation to wind induced vibration and can impact on the visual environment in situations where significant amounts of downtilt are required. [0003]
  • In order to avoid the above difficulties, electrical beam steering can be effected by introducing phase delays into the signal input into radiating elements or groups of radiating elements in an antenna array. [0004]
  • Such techniques are described in New Zealand Patent Specification No. 235010. [0005]
  • Various phase delay techniques are known, including inserting variable length delay lines into the network feeding to the radiating element or elements, or using PIN diodes to vary the phase of a signal transmitted through the feeder network. [0006]
  • A further means for varying the phase of two signals is described in PCT/NZ94/00107 whose disclosure is incorporated herein by reference. This specification describes a mechanically operated variable differential phase shifter incorporating one input and two outputs. [0007]
  • For the present purposes it is sufficient to note that phase shifters such as those described in PCT/NZ94/00107 are adjusted mechanically by sliding an external sleeve along the body of the phase shifter which alters the relative phase of the signals at the phase shifter outputs. [0008]
  • A typical panel antenna will incorporate one or more phase shifters and the present particular embodiment includes three phase shifters. A signal is input to the primary phase shifter which splits the signal into two signals having a desired phase relationship. Each phase shifted signal is then input into a secondary phase shifter whose outputs feeds at least one radiating element. In this manner a progressive phase shift can be achieved across the entire radiating element array, thus providing a means for electrically adjusting the downtilt of the radiated beam. Other phase distributions are possible depending on the application and shape of the radiated beam. [0009]
  • While the steering action is discussed in the context of downtilt of the radiated beam, it is to be understood that the present detailed description is not limited to such a direction. Beam tilt may be produced in any desired direction. [0010]
  • Another particular feature of the variable differential phase shifters is that they provide a continuous phase adjustment, in contrast with the more conventional stepped phase adjustments normally found in PIN diode or stepped length delay line phase shifters. [0011]
  • In a panel antenna of the type presently under consideration, it is desirable to adjust the entire phase shifter array simultaneously so that a desired degree of beam tilt may be set by the adjustment of a single mechanical setting means. The mechanical drive which performs such an adjustment must result in reproducible downtilt angles and be able to be adapted to provide for a number of different phase shifter array configurations. [0012]
  • It is also desirable that the beam tilt of an antenna may be varied remotely to avoid the need for personnel to climb a structure to adjust antenna beam tilt. [0013]
  • DISCLOSURE OF THE INVENTION
  • It is an object of the present invention to provide a mechanical drive system for use in adjusting mechanical phase shifters which mitigates the abovementioned difficulties, provides a solution to the design requirements of the antennas or antenna arrays described above, or at least provides the public with a useful choice. [0014]
  • Accordingly, there is provided a mechanical adjustment means for adjusting the relative phase shifts produced by a plurality of phase shifters connected to an array of radiating elements, said mechanical adjustment means including: [0015]
  • first means for moving a first portion of a first phase shifter relative to a second portion of said first phase shifter to vary the phase difference between output signals from the first phase shifter; and [0016]
  • second means for moving a first portion of a second phase shifter relative to a second portion of said second phase shifter to vary the phase difference between output signals from the second phase shifter, wherein the second phase shifter is fed from an output of the first phase shifter and the degree of movement of the second means is dependent upon the degree of movement of the first means. [0017]
  • Preferably, movement of the second means results in simultaneous movement of a first portion of a third phase shifter with respect to a second portion of the third phase shifter wherein the third phase shifter is fed from an output of the first phase shifter. [0018]
  • Preferably the outputs of the second and third phase shifters are connected to radiating elements so as to produce a beam which tilts as the first and second means adjusts the phase shifters. [0019]
  • Preferably the movement of the first portion of the first phase shifter a first distance relative to the second portion of the first phase shifter results in relative movement between first portions of the second and third phase shifters relative to second portions of the second and third phase shifters of about twice the first distance. [0020]
  • According to a first preferred embodiment the first means includes a gear wheel which drives a rack connected to a first portion of the first phase shifter, arranged so that rotation of the first gear wheel causes the first portion of the first phase shifter to move relative to the second portion of the first phase shifter. Preferably, the second portion of the first phase shifter is mounted to a carriage and the outputs of the first phase shifter are connected to inputs of the second and third phase shifters by push rods so that movement of the second portion of the first phase shifter moves the first portions of the second and third phase shifters with respect to the second portions of the second and third phase shifters. [0021]
  • Preferably a second gear is provided co-axial with and connected to a shaft driving the first gear which drives a rack connected to the second part of the first phase shifter so that rotation of the second gear causes movement of the first portion of the second and third phase shifters relative to the second portions of the second and third phase shifters. [0022]
  • Preferably the ratio between the first and second gear wheels is about 3:1. [0023]
  • According to a second embodiment of the present invention the adjustment means includes a shaft and said first means includes a first threaded portion provided on said shaft and a first cooperating threaded member connected to the first portion of the first phase shifter. The second means includes a second threaded portion provided on said shaft and a second cooperating threaded member connected to the first portion of the second phase shifter. The arrangement is such that rotation of the shaft causes the first portion of the first phase shifter to move relative to the second portion of the first phase shifter at a rate of about twice that of the movement of the first portion of the second phase shifter relative to the second portion of the second phase shifter. [0024]
  • Preferably the second threaded member is connected to the second portion of the first phase shifter and moves the first portion of the second phase shifter via a push rod. This push rod is preferably a coaxial line connecting an output from the first phase shifter to the input to the second phase shifter. [0025]
  • Preferably there is further provided a third phase shifter fed from a second output of the first phase shifter via a push rod which moves a first portion of the third phase shifter in unison with the first portion of the second phase shifter. [0026]
  • According to a further aspect of the invention there is provided an antenna system comprising one or more antenna including electromechanical means for varying the downtilt of the antenna and a controller, external to the antenna, for supplying drive signals to the electromechanical means for adjusting downtilt. [0027]
  • Preferably the system includes a plurality of antenna and the controller may adjust the downtilt for the plurality of antenna and store the degree of downtilt of each antenna in memory. [0028]
  • Preferably the controller may be controlled remotely from a control centre so that a plurality of such systems may be remotely controlled as part of a control strategy for a number of cellular base stations. [0029]
  • Preferably the electromechanical means varies the electrical downtilt of each antenna and means are included for monitoring the electromechanical means and providing signals representative of the position of the electromechanical means to the controller.[0030]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • Embodiments of the invention will now be described by way of example with reference to the accompanying drawings in which: [0031]
  • FIG. 1: shows a panel antenna incorporating a phase shifter drive mechanism according to a first embodiment of the invention. [0032]
  • FIG. 2: illustrates a primary phase shifter incorporating a gear rack. [0033]
  • FIG. 3: illustrates an exploded view of the adjustment assembly incorporated into the carriage. [0034]
  • FIG. 4: shows diagrammatically the operation of the drive mechanism according to the first embodiment. [0035]
  • FIG. 5: shows a panel antenna incorporating a phase shifter drive mechanism according to a second embodiment of the invention. [0036]
  • FIG. 6: shows the phase shifter drive mechanism of FIG. 5 in detail. [0037]
  • FIG. 7: shows the electrical connection of the motor, switches and reed switch of the drive mechanism shown in FIG. 6. [0038]
  • FIG. 8: shows a controller for controlling the drive mechanism shown in FIGS. 6 and 7.[0039]
  • BEST MODE FOR CARRYING OUT THE INVENTION
  • Referring to FIG. 1 there is shown the back side of a [0040] panel antenna 4 having a first phase shifter 1, a second phase shifter 2, a third phase shifter 3 and a phase shifter drive mechanism S. Feed line 6 is connected to input 7 of phase shifter 1. A first portion 8 of phase shifter 1 is moveable relative to a second portion 9 of phase shifter 1.
  • Output signals from [0041] phase shifter 1 are supplied via lines 10 and 11 to inputs 12 and 13 of phase shifters 2 and 3 respectively. Feed lines 10 and 11 comprise coaxial push rods which serve the functions both of feeding signals from the outputs of phase shifter 1 to phase shifters 2 and 3 and moving first portions 14 and 15 of phase shifters 2 and 3 relative to second portion 16 and 17 of phase shifters 2 and 3 respectively.
  • Signals output from [0042] phase shifters 2 and 3 are supplied via coaxial lines 18, 19, 20 and 21 to be fed to respective radiating elements (not shown).
  • In use [0043] first portion 8 of phase shifter 1 may be moved relative to second portion 9 of phase shifter 1 to change the relative phase of signals supplied via lines 10 and 11 to phase shifters 2 and 3 respectively. First portions 14 and 15 of phase shifters 2 and 3 may be moved relative to second portions 16 and 17 of phase shifters 2 and 3 to vary the phase of signals supplied by lines 18, 19, 20 and 21 to respective radiating elements.
  • When [0044] phase shifters 1, 2 and 3 are adjusted in the correct respective portions the beam emitted by the antenna can be tilted as required. It will be appreciated that where a less defined beam is required fewer phase shifters may be employed.
  • To achieve even continuous beam tilting for the embodiment shown in FIG. 1 the [0045] first portions 14 and 15 of phase shifters 2 and 3 should move relative to the second portion 16 and 17 of phase shifters 2 and 3 at the same rate. The first portion 8 of phase shifter 1 must however move relative to the second portion 9 of phase shifter 1 at twice this rate. In the arrangement shown second portion 9 of phase shifter 1 is connected to carriage 22. Movement of carriage 22 results in movement of first portions 14 and 15 of phase shifters 2 and 3 via push rods 10 and 11.
  • Referring now to FIG. 4, operation of the phase shifter drive mechanism will be explained. [0046] Second portion 9 of phase shifter 1 is mounted to a carriage 22 which can move left and right. If carriage 22 is moved to the left first portions 14 and 15 of phase shifters 2 and 3 will be moved to the left via push rods 10 and 11. First portion 8 of phase shifter 1 may be moved relative to phase shifter 9 to vary the phase of signal supplied to phase shifters 2 and 3.
  • According to this first embodiment a [0047] rack 23 is secured to first portion 8 of phase shifter 1. Upon rotation of gear wheel 24 first portion 8 of phase shifter 1 may be moved to the left or the right. A smaller gear wheel 25 is secured to and rotates with gear wheel 24. This gear wheel engages with a rack 26 provided on carriage 22. A further gear wheel 27 is provided which may be driven to rotate gear wheels 24 and 25 simultaneously.
  • [0048] Gear wheel 24 has 90 teeth whereas gear wheel 25 has 30 teeth. It will therefore be appreciated that rotation of gear wheel 24 results in first portion 8 of phase shifter 1 being moved three times as far as carriage 22 (and hence first portions 14 and 15 of phase shifters 2 and 3). However, as carriage 22 is moving in the same direction as the first portion 8 of phase shifter 1 it will be appreciated that the relative movement between first portion 8 and second portion 9 of phase shifter 1 is twice that of the relative movement between the first and second portions of phase shifters 2 and 3. Accordingly, this arrangement results in the relative phase shift produced by phase shifter 1 being twice that produced by phase shifters 2 and 3 (as required to produce even beam tilting in a branched feed arrangement).
  • The particular arrangement is shown in more detail in FIGS. [0049] 2 to 4. It will be appreciated that gear wheel 27 may be driven by any appropriate manual or driven means. Gear wheel 27 may be adjusted by a knob, lever, stepper motor or other driven actuator. A keeper 28 may be secured in place to prevent movement once the desired settings of the phase shifters have been achieved.
  • Referring now to FIGS. 5 and 6, a second embodiment will be described. As seen in FIG. 5, the arrangement is substantially the same as that shown in the first embodiment except for the drive mechanism employed, which is shown in FIG. 6. [0050]
  • In this embodiment the drive mechanism includes a [0051] shaft 31 having a first threaded portion 32 and a second threaded portion 33 provided thereon. A first threaded member 34 is connected to a first portion 35 of primary phase shifter 36. A second threaded member 37 is connected to the second portion 38 of primary phase shifter 36.
  • First threaded [0052] portion 32 is of three times the pitch of second threaded portion 33 (e.g. the pitch of the first threaded portion 32 is 6 mm whereas the pitch of the second threaded portion is 2 mm). In this way, first portion 35 is driven in the direction of movement at three times that of second portion 38. In this way the phase shift produced by primary phase shifter 36 is twice that of second and third phase shifters 39 and 40.
  • [0053] Shaft 31 is rotated by motor 41. This may suitably be a geared down 12 volt DC motor. The other end of shaft 31 is supported by end bearing 42. A reed switch 43 is provided to detect when magnets 44 pass thereby. In this way the number of rotations of shaft 31 may be monitored. Limit switches 45 and 46 may be provided so that the motor is prevented from further driving shaft 31 in a given direction if threaded member 34 abuts a lever of limit switch 45 or 46 respectively.
  • Operation of the drive means according to the second embodiment will now be described by way of example. [0054] Motor 41 may rotate shaft 31 in an anticlockwise direction, viewed from right to left along shaft 3. Threaded member 37 is driven by second threaded portion 33 to move push rods 47 and 48 to the left, and thus to adjust phase shifters 39 and 40.
  • Threaded [0055] member 34 is driven to the left at three times the rate of threaded member 37. First portion 35 thus moves to the left at three times the rate of second portion 38. First portion 35 therefore moves relative to second portion 38 at twice the speed the first portions of phase shifters 39 and 40 move relative to their respective second portions. In this way, delays are introduced in the paths to respective radiating elements so as to produce an evenly tilting beam.
  • The conductivity of [0056] reed switch 43 is monitored so that the number of rotations, or part rotations, of shaft 31 may be monitored. If the motor continues driving shaft 31 until threaded member abuts the lever of limit switch 45 then logic circuitry will only permit motor 41 to drive in the opposite direction. Likewise if threaded member 34 abuts the lever of limit switch 46 the motor 41 will only be permitted to drive in the opposite direction.
  • It will be appreciated that the techniques of both embodiments could be employed in antenna arrays using a larger number of phase shifters. In such applications the relative movement of the first portion of each phase shifter relative to the second portion of each phase shifter would decreased by a factor of 2 for each successive phase shifter along each branch. The ratios used may be varied if the radiation pattern of the antenna needs to be altered to account for the directivity of the individual radiating elements and the effect of the back panel as the amount of downtilt is varied. [0057]
  • Components of the drive mechanism are preferably formed of plastics, where possible, to reduce intermodulation. Threaded [0058] members 34 and 37 preferably include plastic links to phase shifter 36 to reduce intermodulation.
  • It will be appreciated that a number of mechanical drive arrangements may be used to achieve adjustment of the phase shifters in the desired ratio. It is also to be appreciated that sophisticated control electronics may be employed, although the simplicity of construction of the present invention is seen as an advantage. [0059]
  • FIG. 7 shows how [0060] motor 41, reed switch 43 and switches 45 and 46 are connected to lines 71, 72, 76 and 77 from an external controller. Lines 71 and 72 supply current to drive motor 41. Section 73 ensures that if threaded member 34 is driven to either the left-hand side limit or the right-hand side limit it can only be driven in the opposite direction. In the position shown in FIG. 7, switch 45 directly connects line 71 to switch 46 via diode 74. In the position shown switch 46 connects line 71 to motor 41 via diode 75. This is the normal position of the switches when threaded member 34 is not at either extreme limit. When threaded member 34 is driven to the extreme left, for example, and actuates switch 45, then switch 45 open circuits the path via diode 74. Diode 74 allows current flow in the direction allowing motor 41 to drive to the left. Accordingly, when switch 45 is open, motor 41 can only drive in such a direction as to drive threaded member 34 to the right (i.e.: current in the direction allowed by diode 75).
  • Likewise, if threaded [0061] member 34 is driven to the extreme right, switch 46 is opened to break the path via diode 75. This prevents motor 41 driving in such a direction as to drive threaded member 34 further to the right.
  • [0062] Lines 76 and 77 are connected to reed switch 43 so that the opening and closing of reed switch 43 may be monitored by an external control unit. In use, the opening and closing of reed switch 43 may be monitored to determine the position of threaded member 34, and hence the corresponding degree of tilt of the antenna.
  • To select an initial angle of downtilt threaded [0063] member 34 may be driven to the extreme right. An external controller may provide a current in one direction to motor 41 to drive member 34 to the right. The motor will continue to be driven to the right until threaded portion 34 abuts switch 46. When switch 46 is opened diode 75 will be open circuited, which will prevent the motor being driven further to the right.
  • The controller will sense that threaded [0064] member 34 is at its extreme right position as it will detect that reed switch 43 is not opening and closing. After a predetermined delay the controller may then provide a current in the opposite direction via lines 71 and 72 to motor 41 to drive it to the left. As the motor is driven to the left the controller will monitor the opening and closing of reed switch 43 to determine how far threaded member 34 has moved to the left. The controller will continue to move threaded member 34 to the left until reed switch 43 has opened and closed a predetermined number of times, corresponding to a desired angle of downtilt. Alternatively, member 34 may be driven to the extreme left and then back to the right.
  • At an antenna site a number of such panels may be installed and controlled by a [0065] single controller 80 as shown in FIG. 8. The four wires 71, 72, 76 and 77 correspond to respective cable groups 78 to three such antenna panels. Controller 80 may be provided at the base of an antenna site to allow an operator to adjust the tilt of a plurality of antennas at ground level, rather than requiring a serviceman to climb up the antenna structure and adjust each antenna manually. Alternatively, controller 80 may be a hand-held unit which can be plugged into a connector at the base of an antenna to adjust antenna at a site.
  • [0066] Controller 80 may include a display 81, an “escape” button 82, an “enter” button 83, an “up” button 84 and “down” button 85. At power up display 81 may simply display a home menu such as “Deltec NZ Ltd © 1995”. Upon pressing any key, a base menu may be displayed including options such as:
  • unlock controls [0067]
  • set array tilt [0068]
  • measure tilt [0069]
  • enable array [0070]
  • disable array [0071]
  • lock controls [0072]
  • The up/down keys may be used to move through the menu and the [0073] enter key 83 used to select an option. If “unlock controls” is selected a user will then be required to enter a three digit code. The up/down keys may be used to move through the numbers 0 to 9 and enter used to select each number. If the correct code is entered “locked released” appears. If the incorrect code is entered “controls locked” appears and a user is returned to the home menu. If “set array tilt” is selected from the base menu the following may appear:
  • set array tilt [0074]
  • array: 01 X.X°[0075]
  • The up-down [0076] keys 84, 85 may be used to select the desired array number. The enter key accepts the selected array and the previously recorded angle of downtilt may be displayed as follows:
  • set array tilt [0077]
  • array: 01 4.6°[0078]
  • In this example the previously set angle of downtilt with 4.6°. Using the up/down [0079] keys 84, 85 a new angle may be entered. Controller 80 may then provide a current to motor 41 via lines 71 and 72 to drive threaded portion 34 in the desired direction to alter the downtilt. The opening and closing of reed switch 43 is monitored so that threaded member 34 is moved in the desired direction for a predetermined number of pulses from reed switch 43. The downtilt for any other array may be changed in the same manner. If the controller is locked a user may view an angle of downtilt but will not be able to alter the angle.
  • If the “measure array” option is selected the present angle of downtilt of the antenna may be determined. Upon selecting the “measure tilt” function from the base menu, the following display appears: [0080]
  • measure tilt [0081]
  • array: 01 X.X°[0082]
  • The up/down buttons may be used to select the desired array. The enter key will accept the selected array. To measure the actual angle of [0083] downtilt controller 80 drives a motor 41 of an array to drive member 34 to the right. Motor 41 is driven until threaded member 34 abuts switch 46. The controller counts the number of pulses from reed switch 43 to determine how far threaded portion 34 has travelled. At the extreme right position the controller determines and displays the angle of downtilt, calculated in accordance with the number of pulses connected from reed switch 43. The controller then drives threaded member 34 back in the opposite direction for the same number of pulses from reed switch 43 so that it returns to the same position. The angle of downtilt for each antenna may be stored in memory of controller 80. This value will be updated whenever the actual angle of downtilt is measured in this way. The “measure tilt” function may not be used if the controller is locked.
  • [0084] Controller 80 may include tables in memory containing the number of pulses from reed switch 43, that must be counted for threaded member 34 to achieve each desired degree of downtilt. This may be stored as a table containing the number of pulses for each required degree of downtilt, which may be in 0.1° steps. This approach ensures that any non-linearities of the antenna may be compensated for as the tables will give the actual amount of movement required to achieve a desired downtilt for a given antenna.
  • The “enable array” function may be used to enable each array when installed. The controller will be prevented from moving any array that has not been enabled. [0085] Controller 80 will record in memory which arrays have been enabled. The “disable array” function may be used to disable arrays in a similar manner.
  • The “lock controls” function may be used to lock the controller once adjustment has been made. A “rack error” signal may be displayed if the array has not operated correctly. This will indicate that an operator should inspect the array. [0086]
  • Adjustment of the array may also be performed remotely. [0087] Controller 80 may be connected to modem 86 via serial line 87 which may connect via telephone line 88 to a central controller 89. Alternatively, the controller 80 may be connected to a central controller 89 via a radio link etc. The functions previously discussed may be effected remotely at central controller 89. In a computer controlled system adjustments may be made by a computer without operator intervention. In this way, the system can be integrated as part of a control strategy for a cellular base station. For example, a remote control centre 89 may adjust the downtilt of antennas at a cellular base station remotely to adjust the size of the cell in response to traffic demand. It will be appreciated that the capability to continuously and remotely control the electrical downtilt of a number of antenna of a cellular base station may be utilised in a number of control strategies.
  • [0088] Central controller 89 may be a computer, such as an IBM compatible PC running a windows based software program. A main screen of the program may show information regarding the antenna under control as follows:
    CURRENT NEW
    NAME TYPE ANGLE VALUE STATUS
    GROUP
    1
    antenna 1 1 south VT01 12° 12.5° setting
    antenna
    2 1 north VT01 12° 12.5° queued
    antenna 3 1 west VTO1 12° 12.5° queued
    GROUP 2
    antenna 4 2 south VT01  6° pending
    antenna 5 2 north VI01 P11  .5° nudging
    antenna
    6 2 west VTO1  6° faulty
  • The antennas may be arranged in groups at each site. [0089] Group 1 for example contains antennas 1, 2 and 3. The following information about each antenna is given:
    Name: this is the user assigned name such as
    1 south, 1 north, 1 west etc.
    Type: this is the antenna type which the
    controller communicates to the PC at
    start-up.
    Current Angle: this is the actual degree of beam tilt
    of an antenna which is communicated
    from the controller to the PC at
    start-up. The controller also
    supplies to the PC each antenna's
    minimum and maximum angles of tilt.
    New Value: by moving a pointer to the row of an
    antenna and clicking a button of a
    mouse the settings of an antenna may
    be varied. When a user clicks on the
    mouse the following options may be
    selected:
  • Name—the user may change the group or antenna name. [0090]
  • Adjust—a user may enter a new angle in the “new value” column to set the antenna to a new value. [0091]
  • Nudge—the user may enter a relative value (i.e.: increase or decrease the tilt of an antenna by a predetermined amount). [0092]
  • Measure—the controller may be instructed to measure the actual angle of tilt of an antenna or group of antennas. [0093]
  • If an antenna is in a “fault” condition then it may not be adjusted and if a user clicks on a mouse when that antenna is highlighted a dialogue box will appear instructing the user to clear the fault before adjusting the antenna. [0094]
  • Each antenna also includes a field indicating the status of the antenna as follows: [0095]
  • O.K.—the antenna is functioning normally. [0096]
  • Queued—an instruction to read, measure, set or nudge the antenna has been queued until the controller is ready. [0097]
  • Reading—when information about an antenna is being read from the controller. [0098]
  • Measuring—when the actual degree of tilt of the antenna is being measured. [0099]
  • Setting—when a new tilt angle is being set. [0100]
  • Nudging—when the tilt angle of the antenna is being nudged. [0101]
  • Faulty—where an antenna is faulty. [0102]
  • When adjusting, measuring or nudging an antenna a further dialogue box may appear describing the action that has been instructed and asking a user to confirm that the action should be taken. This safeguards against undesired commands being carried out. [0103]
  • Information for a site may be stored in a file which can be recalled when the antenna is to be monitored or adjusted again. It will be appreciated that the software may be modified for any required control application. [0104]
  • [0105] Controller 80 may be a fixed controller installed in the base of an antenna site or could be a portable control unit which is plugged into connectors from control lines 78.
  • Where in the foregoing description reference has been made to integers or components having known equivalents then such equivalents are herein incorporated as if individually set forth. [0106]
  • Although this invention has been described by way of example it is to be appreciated that improvements and/or modifications may be made thereto without departing from the scope or spirit of the present invention. [0107]
  • Industrial Applicability
  • The present invention may find particular application in antenna systems, such as those used in cellular communication systems. [0108]

Claims (21)

1. Drive means for adjusting the relative phase shifts produced by a plurality of phase shifters connected to an array of radiating elements, said drive means including:
first means for moving a first portion of a first phase shifter relative to a second portion of said first phase shifter to vary the phase difference between output signals from the first phase shifter; and
second means for moving a first portion of a second phase shifter relative to a second portion of said second phase shifter to vary the phase difference between output signals from the second phase shifter, wherein the second phase shifter is fed from an output of the first phase shifter and the degree of movement of the second means is dependent upon the degree of movement of the first means.
2. Drive means as claimed in claim 1 wherein movement of the second means causes simultaneous movement of a first portion of a third phase shifter with respect to a second portion of the third phase shifter, wherein the third phase shifter is fed from an output of the first phase shifter.
3. Drive means as claimed in claim 2 wherein the outputs of the second and third phase shifters are connected to radiating elements so as to produce a beam which tilts as the first and second means adjust the phase shifters.
4. Drive means as claimed in claim 2 or claim 3 wherein movement of the first portion of the first phase shifter a first distance relative to the second portion of the first phase shifter results in relative movement between first portions of the second and third phase shifters relative to second portions of the second and third phase shifters of about twice the first distance.
5. Drive means as claimed in any one of the preceding claims wherein the first means includes a gear wheel which drives a rack connected to the first portion of the first phase shifter, arranged so that rotation of the first gear wheel causes the first portion of the first phase shifter to move relative to the second portion of the first phase shifter.
6. Drive means as claimed in claim 5, when dependent upon any one of claims 2 to 4, wherein the second portion of the first phase shifter is mounted to a carriage and the outputs of the first phase shifter are connected to inputs of the second and third phase shifters by push rods so that movement of the second portion of the first phase shifter moves the first portions of the second and third phase shifters with respect to the second portions of the second and third phase shifters.
7. Drive means as claimed in claim 5 or claim 6, when dependent upon any one of claims 2 to 4, wherein a second gear is provided, driven with the first gear, which drives a rack connected to the second part of the first phase shifter so that rotation of the second gear causes movement of the first portion of the second and third phase shifters relative to the second portions of the second and third phase shifters.
8. Drive means as claimed in claim 7 wherein the ratio between the first and second gear wheels is about 3:1.
9. Drive means as claimed in any one of claims 1 to 4 wherein the drive means includes a shaft and said first means includes a first threaded portion provided on said shaft and a first cooperating threaded member connected to the first portion of the first phase shifter, the second means includes a second threaded portion provided on said shaft and a second cooperating threaded member connected to the first portion of the second phase shifter, the arrangement being such that rotation of the shaft causes the first portion of the first phase shifter to move relative to the second portion of the first phase shifter at a rate that is a multiple of the movement of the first portion of the second phase shifter relative to the second portion of the second phase shifter.
10. Drive means as claimed in claim 9 wherein the multiple is about 2.
11. Drive means as claimed in claim 9 or claim 10 wherein the second threaded member is connected to the second portion of the first phase shifter and moves the first portion of the second phase shifter via a push rod.
12. Drive means as claimed in claim 11 wherein the push rod is a coaxial line connecting an output from the first phase shifter to the input to the second phase shifter.
13. Drive means as claimed in any one of claims 9 to 12 including a third phase shifter fed from a second output of the first phase shifter via a push rod which moves a first portion of the third phase shifter in unison with the first portion of the second phase shifter.
14. An antenna system comprising one or more antenna, each including electromechanical means for varying the downtilt of the antenna beam; and
a controller, external to the one or more antenna, for supplying drive signals to the electromechanical means for adjusting downtilt.
15. An antenna system as claimed in claim 14 wherein the antenna system comprises a plurality of antenna.
16. An antenna system as claimed in claim 14 or claim 15 wherein the electromechanical means varies the downtilt of each antenna beam by mechanically adjusting one or more phase shifter.
17. An antenna as claimed in claim 16 wherein the one or more phase shifter may be continuously adjusted to continuously vary the phase shift over a permitted range.
18. An antenna system as claimed in any one of claims 14 to 17 including means to monitor the degree of phase shift of a phase shifter of each antenna to determine the degree of downtilt of each antenna beam and for supplying such information to the controller.
19. An antenna system as claimed in claim 18 wherein the controller stores the degree of downtilt of each antenna of the system in memory.
20. An antenna system as claimed in any one of claims 14 to 19 wherein the controller includes a modem to enable communication of data and commands between the antenna system and a central control means.
21. A communications system comprising a plurality of antenna systems as claimed in any one of claims 14 to 20 located at a plurality of sites, each controller being responsive to commands sent from a central control means to vary the downtilt of the beam of each antenna of the antenna system.
US10/764,723 1994-11-04 2004-01-26 Antenna control system Abandoned US20040155828A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/764,723 US20040155828A1 (en) 1994-11-04 2004-01-26 Antenna control system

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
NZ264864 1994-11-04
NZ26486494 1994-11-04
NZ272778 1995-08-15
NZ27277895 1995-08-15
WOPCT/NZ95/00106 1995-10-16
PCT/NZ1995/000106 WO1996014670A1 (en) 1994-11-04 1995-10-16 An antenna control system
US08/817,445 US6198458B1 (en) 1994-11-04 1995-10-16 Antenna control system
US09/713,614 US6346924B1 (en) 1994-11-04 2000-11-15 Antenna control system
US10/025,155 US8558739B2 (en) 1994-11-04 2001-12-18 Antenna control system
US10/764,723 US20040155828A1 (en) 1994-11-04 2004-01-26 Antenna control system

Related Parent Applications (1)

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US10/025,155 Continuation US8558739B2 (en) 1994-11-04 2001-12-18 Antenna control system

Publications (1)

Publication Number Publication Date
US20040155828A1 true US20040155828A1 (en) 2004-08-12

Family

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Family Applications (10)

Application Number Title Priority Date Filing Date
US08/817,445 Expired - Lifetime US6198458B1 (en) 1994-11-04 1995-10-16 Antenna control system
US09/713,614 Expired - Lifetime US6346924B1 (en) 1994-11-04 2000-11-15 Antenna control system
US10/025,155 Expired - Fee Related US8558739B2 (en) 1994-11-04 2001-12-18 Antenna control system
US10/073,806 Expired - Lifetime US6567051B2 (en) 1994-11-04 2002-02-11 Antenna control system
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US10/025,155 Expired - Fee Related US8558739B2 (en) 1994-11-04 2001-12-18 Antenna control system
US10/073,806 Expired - Lifetime US6567051B2 (en) 1994-11-04 2002-02-11 Antenna control system
US10/073,785 Expired - Lifetime US6600457B2 (en) 1994-11-04 2002-02-11 Antenna control system
US10/073,468 Expired - Lifetime US6538619B2 (en) 1994-11-04 2002-02-11 Antenna control system
US10/099,158 Expired - Lifetime US6590546B2 (en) 1994-11-04 2002-03-15 Antenna control system
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060066494A1 (en) * 2003-02-24 2006-03-30 Zdenek Trejtnar Radiocommunications antenna with misalignment of radiation lobe by variable phase shifter
US20060068849A1 (en) * 2004-09-29 2006-03-30 Bernhard Urs P Interference control in CDMA networks
FR2897474A1 (en) * 2006-02-10 2007-08-17 Athos Dev Sarl DEVICE FOR SUPPORTING AND ORIENTING AT LEAST ONE ANTENNA PROVIDED WITH AN ADJUSTMENT ROD, RELAY AND NETWORK EQUIPPED WITH SUCH A DEVICE.
US20110134005A1 (en) * 2007-11-30 2011-06-09 Ace Antenna Corporation Apparatus for adjusting an inclination angle in an antenna
WO2011116862A1 (en) * 2010-03-26 2011-09-29 Kathrein-Werke Kg Multi-beamforming deviceg
US20110237315A1 (en) * 2010-03-26 2011-09-29 Kathrein-Werke Kg Multi-beam-shaping structure
US9496607B2 (en) 2010-11-23 2016-11-15 Huawei Technologies Co., Ltd. Antenna apparatus, antenna system, and antenna electrical tilting method

Families Citing this family (114)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6198458B1 (en) 1994-11-04 2001-03-06 Deltec Telesystems International Limited Antenna control system
US5832365A (en) * 1996-09-30 1998-11-03 Lucent Technologies Inc. Communication system comprising an active-antenna repeater
US5917455A (en) 1996-11-13 1999-06-29 Allen Telecom Inc. Electrically variable beam tilt antenna
SE509175C2 (en) * 1997-04-18 1998-12-14 Ericsson Telefon Ab L M Method and apparatus for improving the performance parameters of an antenna
EP0980111A1 (en) * 1998-05-20 2000-02-16 Libertel N.V. Antenna device of a base station of a mobile telecommunication network.
JP3316561B2 (en) * 1998-07-06 2002-08-19 株式会社村田製作所 Array antenna device and wireless device
US6549529B1 (en) * 1999-02-01 2003-04-15 Lucent Technologies Inc. System and method for controlling antenna downtilt/uptilt in a wireless communication network
FR2790142A1 (en) 1999-02-24 2000-08-25 France Telecom ADJUSTABLE TILT ANTENNA
US6563399B2 (en) 2000-06-05 2003-05-13 Leo Love Adjustable azimuth and phase shift antenna
US6239744B1 (en) 1999-06-30 2001-05-29 Radio Frequency Systems, Inc. Remote tilt antenna system
DE19938862C1 (en) 1999-08-17 2001-03-15 Kathrein Werke Kg High frequency phase shifter assembly
US6667714B1 (en) * 2000-05-03 2003-12-23 Lucent Technologies Inc. Downtilt control for multiple antenna arrays
GB0016846D0 (en) * 2000-07-10 2000-08-30 United States Filter Corp Electrodeionisation Apparatus
CN100409486C (en) 2000-07-10 2008-08-06 安德鲁公司 Cellular antenna
KR100452166B1 (en) * 2000-12-29 2004-10-12 주식회사 에이스테크놀로지 Beam tilt antenna by using the variable phase shifter
US6773683B2 (en) * 2001-01-08 2004-08-10 Uvtech Systems, Inc. Photocatalytic reactor system for treating flue effluents
DE10104564C1 (en) * 2001-02-01 2002-09-19 Kathrein Werke Kg Control device for setting a different drop angle, in particular of mobile radio antennas belonging to a base station, and an associated antenna and method for changing a drop angle
US6573875B2 (en) 2001-02-19 2003-06-03 Andrew Corporation Antenna system
US6708147B2 (en) 2001-02-28 2004-03-16 Telefonaktiebolaget Lm Ericsson(Publ) Method and apparatus for providing comfort noise in communication system with discontinuous transmission
US6717555B2 (en) * 2001-03-20 2004-04-06 Andrew Corporation Antenna array
US6590531B2 (en) 2001-04-20 2003-07-08 E Tenna Corporation Planar, fractal, time-delay beamformer
US6831602B2 (en) 2001-05-23 2004-12-14 Etenna Corporation Low cost trombone line beamformer
US6738024B2 (en) * 2001-06-22 2004-05-18 Ems Technologies Canada, Ltd. Mechanism for differential dual-directional antenna array
US7639196B2 (en) 2001-07-10 2009-12-29 Andrew Llc Cellular antenna and systems and methods therefor
FR2828031B1 (en) * 2001-07-30 2003-10-17 Nortel Networks Ltd RADIOCOMMUNICATION BASE STATION WITH VARIABLE RADIATION DIAGRAM
US7233217B2 (en) 2001-08-23 2007-06-19 Andrew Corporation Microstrip phase shifter
GB0125345D0 (en) * 2001-10-22 2001-12-12 Qinetiq Ltd Antenna System
GB0125349D0 (en) * 2001-10-22 2001-12-12 Qinetiq Ltd Antenna system
US7274331B2 (en) * 2001-12-03 2007-09-25 Huber + Suhner Ag Phase-shifting system using a displaceable dielectric and phase array antenna comprising such a phase-shifting system
GB0200585D0 (en) * 2002-01-11 2002-02-27 Csa Ltd Antenna with adjustable beam direction
WO2003083992A1 (en) * 2002-03-26 2003-10-09 Andrew Corp. Multiband dual polarized adjustable beamtilt base station antenna
KR20040005104A (en) * 2002-07-08 2004-01-16 (주)하이게인안테나 Antenna capable of varying beam tilt
KR100505978B1 (en) * 2002-08-17 2005-08-04 주식회사 엘지텔레콤 Antenna system with variable horizontal beam and method of driving the same
US6963314B2 (en) * 2002-09-26 2005-11-08 Andrew Corporation Dynamically variable beamwidth and variable azimuth scanning antenna
US6809694B2 (en) * 2002-09-26 2004-10-26 Andrew Corporation Adjustable beamwidth and azimuth scanning antenna with dipole elements
KR100480159B1 (en) * 2002-10-22 2005-04-07 주식회사 엘지텔레콤 Antenna system of variable beam width and method of varying beam width
US7221239B2 (en) * 2002-11-08 2007-05-22 Andrew Corporation Variable power divider
WO2004045017A1 (en) 2002-11-08 2004-05-27 Ems Technologies, Inc. Variable power divider
US6928281B2 (en) * 2002-12-12 2005-08-09 Visteon Global Technologies, Inc. Active antenna system with fault detection
US6924776B2 (en) * 2003-07-03 2005-08-02 Andrew Corporation Wideband dual polarized base station antenna offering optimized horizontal beam radiation patterns and variable vertical beam tilt
US7358922B2 (en) * 2002-12-13 2008-04-15 Commscope, Inc. Of North Carolina Directed dipole antenna
US7088288B1 (en) * 2003-01-10 2006-08-08 Xilinx, Inc. Method and circuit for controlling an antenna system
US6922169B2 (en) * 2003-02-14 2005-07-26 Andrew Corporation Antenna, base station and power coupler
US6999042B2 (en) * 2003-03-03 2006-02-14 Andrew Corporation Low visual impact monopole tower for wireless communications
US20070136064A1 (en) * 2003-04-16 2007-06-14 Carroll David W Mobile personal computer with movement sensor
CA2523747C (en) * 2003-05-17 2007-04-24 Quintel Technology Limited Phased array antenna system with adjustable electrical tilt
US7427962B2 (en) * 2003-06-16 2008-09-23 Andrew Corporation Base station antenna rotation mechanism
US8018390B2 (en) 2003-06-16 2011-09-13 Andrew Llc Cellular antenna and systems and methods therefor
US20050073970A1 (en) * 2003-10-01 2005-04-07 Davidson Darren J. Wireless communications network management system
US20050219133A1 (en) * 2004-04-06 2005-10-06 Elliot Robert D Phase shifting network
US7113135B2 (en) * 2004-06-08 2006-09-26 Skycross, Inc. Tri-band antenna for digital multimedia broadcast (DMB) applications
GB0425813D0 (en) * 2004-11-24 2004-12-29 Finglas Technologies Ltd Remote control of antenna line device
SE528018C2 (en) 2004-11-26 2006-08-08 Powerwave Technologies Sweden antenna control system
SE528015C2 (en) 2004-11-26 2006-08-08 Powerwave Technologies Sweden antenna control system
GB0426319D0 (en) * 2004-12-01 2005-01-05 Finglas Technologies Ltd Remote control of antenna line device
US7557675B2 (en) * 2005-03-22 2009-07-07 Radiacion Y Microondas, S.A. Broad band mechanical phase shifter
US7999737B2 (en) * 2005-05-31 2011-08-16 Powerwave Technologies, Inc. Beam adjusting device
CN2812316Y (en) * 2005-06-02 2006-08-30 京信通信技术(广州)有限公司 Adjuster for mobile communication antenna phase shifter
US7274975B2 (en) * 2005-06-06 2007-09-25 Gridpoint, Inc. Optimized energy management system
CN1332175C (en) * 2005-08-23 2007-08-15 广州杰赛科技股份有限公司 Apparatus and method for detecting electronic declination angle of communication antenna
EP1788722A1 (en) * 2005-11-21 2007-05-23 Nortel Networks Limited Transmission method and related base station
KR100807321B1 (en) * 2005-12-13 2008-02-28 주식회사 케이엠더블유 Adjustable beam antenna for mobile communication base station
US20090061941A1 (en) * 2006-03-17 2009-03-05 Steve Clark Telecommunications antenna monitoring system
SE529953C2 (en) * 2006-05-31 2008-01-15 Powerwave Technologies Sweden Control system for controlling the electrically set slope of an antenna
WO2007135204A1 (en) * 2006-12-19 2007-11-29 Radiacion Y Microondas, S.A. Remote control device for controlling the angle of inclination of the radiation diagram of an antenna
US7830307B2 (en) * 2007-04-13 2010-11-09 Andrew Llc Array antenna and a method of determining an antenna beam attribute
CN101482606B (en) * 2008-01-08 2011-07-20 锐迪科微电子(上海)有限公司 Integer ambiguity initialization apparatus and method
CN101651480B (en) 2008-08-14 2013-04-24 华为技术有限公司 Active antenna, base station, method for refreshing amplitude and phases and signal processing method
US20100053008A1 (en) * 2008-08-27 2010-03-04 Pc-Tel, Inc. Antenna having distributed phase shift mechanism
KR101605860B1 (en) * 2009-05-12 2016-03-24 주식회사 에이스테크놀로지 Dove tail device in an antenna
KR101618115B1 (en) * 2009-05-12 2016-05-04 주식회사 에이스테크놀로지 Antenna and transformer included in the same
US8674788B2 (en) 2010-03-31 2014-03-18 Andrew Llc Phase shifter having an accelerometer disposed on a movable circuit board
JP2012044507A (en) * 2010-08-20 2012-03-01 Denki Kogyo Co Ltd Controller for antenna system
WO2012048343A1 (en) 2010-10-08 2012-04-12 Commscope, Inc. Of North Carolina Antenna having active and passive feed networks
CN102055069B (en) * 2010-11-01 2014-10-29 京信通信系统(中国)有限公司 Electric tuning antenna control system and method
CN102097681B (en) * 2010-12-09 2014-02-26 广东通宇通讯股份有限公司 Multi-array electric tuning base station antenna adjusting device
EP2482581B1 (en) * 2011-01-28 2014-04-30 Swisscom AG User-controlled method and system for modifying the radiation of a wireless device in one or more user-selected volumes
DE102011015572B3 (en) * 2011-03-30 2012-06-28 Kathrein-Werke Kg Beam shaping device for an antenna and associated antenna
TW201328028A (en) 2011-12-30 2013-07-01 Gemintek Corp Multipoint drive device for all-purpose base station antenna
US8808028B2 (en) * 2012-03-23 2014-08-19 Andrew Llc Integrated AISG connector assembly
CN103094689B (en) * 2013-02-04 2016-03-16 京信通信系统(中国)有限公司 Medium phase shift block and phase-shifting unit, feeding network and antenna
CN103855471B (en) * 2014-02-27 2017-03-29 京信通信技术(广州)有限公司 Phase-shift system
CN106465146B (en) * 2014-05-05 2020-11-03 华为技术有限公司 RCU (remote control Unit) and RF (radio frequency) port matched electric tilt antenna, base station and method
US10193004B2 (en) 2014-10-19 2019-01-29 Orbotech Ltd. LIFT printing of conductive traces onto a semiconductor substrate
US10033086B2 (en) * 2014-11-10 2018-07-24 Commscope Technologies Llc Tilt adapter for diplexed antenna with semi-independent tilt
CN104409854B (en) * 2014-12-04 2017-02-22 武汉虹信通信技术有限责任公司 Regulating device for rotating scale of tunable antenna
US10411505B2 (en) * 2014-12-29 2019-09-10 Ricoh Co., Ltd. Reconfigurable reconstructive antenna array
CN107208256B (en) 2015-01-19 2020-08-11 奥博泰克有限公司 Printing of three-dimensional metal structures using sacrificial supports
US10374291B2 (en) 2015-02-24 2019-08-06 Commscope Technologies Llc Multi ret actuator having a relay configuration with positioning and driving motors
KR101942676B1 (en) * 2015-03-31 2019-01-25 니혼덴교고사꾸가부시끼가이샤 Antenna and phase shift control device
US9596617B2 (en) * 2015-04-14 2017-03-14 ETAK Systems, LLC Unmanned aerial vehicle-based systems and methods associated with cell sites and cell towers
ES2542314B1 (en) * 2015-06-02 2016-05-13 Telnet Redes Inteligentes, S.A. SYSTEM FOR REMOTE CONTROL OF MULTI-BEAM ANTENNA RADIATION BEAMS
ES2781705T3 (en) * 2015-07-29 2020-09-04 Commscope Technologies Llc Tilt adapter for duplex antenna with semi-independent tilt
KR102546450B1 (en) 2015-11-22 2023-06-21 오르보테크 엘티디. Control of surface properties of printed 3-dimensional structures
KR101709076B1 (en) * 2015-11-24 2017-02-22 현대자동차주식회사 Antenna apparatus and vehicle having the same
CN105406191B (en) * 2015-12-09 2019-06-07 北京佰才邦技术有限公司 The adjustment method and device of array antenna feeding network
CN105720370B (en) * 2016-01-25 2019-01-25 华为技术有限公司 A kind of antenna azimuth adjusting device
SE540514C2 (en) * 2016-02-05 2018-09-25 Cellmax Tech Ab Multi radiator antenna comprising means for indicating antenna main lobe direction
CN107366715B (en) 2016-05-13 2022-01-28 康普技术有限责任公司 Actuator gearbox with selectable linkage
EP3472896A4 (en) 2016-06-15 2020-01-15 Commscope Technologies LLC Actuators for controlling multiple phase shifters of remote electronic downtilt base station antennas
WO2018099565A1 (en) * 2016-12-01 2018-06-07 Huawei Technologies Co., Ltd. Antenna tilt drive
TW201901887A (en) 2017-05-24 2019-01-01 以色列商奧寶科技股份有限公司 Electrical interconnection circuit components on the substrate without prior patterning
WO2019074704A1 (en) * 2017-10-12 2019-04-18 Commscope Technologies Llc Systems for thermo-electric a ctuation of base station antennas to support remote electrical tilt (ret) and methods of operating same
US10879978B2 (en) * 2018-02-23 2020-12-29 Amphenol Antenna Solutions, Inc. Differential phase shifter for hybrid beamforming
CN110504511B (en) 2018-05-16 2022-04-05 康普技术有限责任公司 Linkage mechanism for phase shifter assembly
CA3101263A1 (en) * 2018-05-24 2019-11-28 Nanowave Technologies Inc. Radar antenna system and method
CN110829029A (en) 2018-08-10 2020-02-21 康普技术有限责任公司 Phase shifter assembly
US20220231413A1 (en) * 2019-09-06 2022-07-21 Commscope Technologies Llc Remote electronic tilt base station antennas and mechanical calibration for such antennas
CN111883929B (en) * 2020-05-28 2022-07-05 上海民航华东空管工程技术有限公司 Debugging method for reducing downward sliding angle of M-type downward sliding antenna
US11581648B2 (en) 2020-06-08 2023-02-14 The Hong Kong University Of Science And Technology Multi-port endfire beam-steerable planar antenna
CN114335930A (en) * 2020-10-10 2022-04-12 罗森伯格技术有限公司 Phase shifter assembly
CN112650082A (en) * 2020-12-07 2021-04-13 浙江捷昌线性驱动科技股份有限公司 Synchronous control system and method
CN213602013U (en) * 2020-12-29 2021-07-02 罗森伯格技术有限公司 Transmission device for antenna
CN115207603A (en) * 2021-04-14 2022-10-18 康普技术有限责任公司 Transmission mechanism for base station antenna and base station antenna

Family Cites Families (128)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2041600A (en) 1934-04-05 1936-05-19 Bell Telephone Labor Inc Radio system
US2245660A (en) 1938-10-12 1941-06-17 Bell Telephone Labor Inc Radio system
US2239775A (en) 1939-03-02 1941-04-29 Bell Telephone Labor Inc Radio communication
US2247666A (en) * 1939-08-02 1941-07-01 Bell Telephone Labor Inc Directional antenna system
US2648000A (en) 1943-10-02 1953-08-04 Us Navy Control of wave length in wave guides
BE469215A (en) 1944-01-28
US2432134A (en) 1944-06-28 1947-12-09 American Telephone & Telegraph Directional radio system
US2596966A (en) 1948-11-16 1952-05-13 Gilfillan Bros Inc Radar antenna structure
US2540696A (en) * 1949-07-16 1951-02-06 Jr Walter J Smith Drive mechanism for adjustable antennas
US2836814A (en) 1952-06-25 1958-05-27 Itt R-f phase shifter
US2773254A (en) 1953-04-16 1956-12-04 Itt Phase shifter
US2968808A (en) 1954-08-24 1961-01-17 Alford Andrew Steerable antenna array
US2961620A (en) 1955-10-06 1960-11-22 Sanders Associates Inc Phase shifter for high frequency transmission line
US3032759A (en) 1956-08-31 1962-05-01 North American Aviation Inc Conical scanning system
US3032763A (en) 1958-12-19 1962-05-01 Carlyle J Sletten Stretch array for scanning
US3255450A (en) 1960-06-15 1966-06-07 Sanders Associates Inc Multiple beam antenna system employing multiple directional couplers in the leadin
US3277481A (en) * 1964-02-26 1966-10-04 Hazeltine Research Inc Antenna beam stabilizer
US3522558A (en) 1969-01-13 1970-08-04 Western Electric Co Microwave phase shift device
DE1955328C3 (en) * 1969-11-04 1980-12-18 Brown, Boveri & Cie Ag, 6800 Mannheim Detour line continuously adjustable in length
US3940770A (en) 1974-04-24 1976-02-24 Raytheon Company Cylindrical array antenna with radial line power divider
US3969729A (en) 1975-03-17 1976-07-13 International Telephone And Telegraph Corporation Network-fed phased array antenna system with intrinsic RF phase shift capability
US4241352A (en) 1976-09-15 1980-12-23 Ball Brothers Research Corporation Feed network scanning antenna employing rotating directional coupler
US4129872A (en) 1976-11-04 1978-12-12 Tull Aviation Corporation Microwave radiating element and antenna array including linear phase shift progression angular tilt
US4176354A (en) 1978-08-25 1979-11-27 The United States Of America As Represented By The Secretary Of The Navy Phased-array maintenance-monitoring system
US4178581A (en) 1978-11-03 1979-12-11 The Bendix Corporation Integrated antenna aperture
US4249181A (en) 1979-03-08 1981-02-03 Bell Telephone Laboratories, Incorporated Cellular mobile radiotelephone system using tilted antenna radiation patterns
US4451699A (en) 1979-12-31 1984-05-29 Broadcom, Inc. Communications system and network
US4427984A (en) 1981-07-29 1984-01-24 General Electric Company Phase-variable spiral antenna and steerable arrays thereof
GB2115984B (en) 1982-03-01 1986-09-24 Raytheon Co Transceiver element
US4532518A (en) 1982-09-07 1985-07-30 Sperry Corporation Method and apparatus for accurately setting phase shifters to commanded values
DE3322986C2 (en) 1983-06-25 1985-09-19 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Video recorder with recording of one or more audio signals
DE3323234A1 (en) 1983-06-28 1985-01-10 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Phase-controlled group antenna
NL8303444A (en) 1983-10-07 1985-05-01 Hollandse Signaalapparaten Bv PHASE ROTATOR CONTROL FOR A PHASED-ARRAY ANTENNA.
US4652887A (en) * 1983-12-16 1987-03-24 The General Electric Company P.L.C. Antenna drive
US4564824A (en) 1984-03-30 1986-01-14 Microwave Applications Group Adjustable-phase-power divider apparatus
US4575697A (en) 1984-06-18 1986-03-11 Sperry Corporation Electrically controlled phase shifter
JPS61172411A (en) 1985-01-28 1986-08-04 Nippon Telegr & Teleph Corp <Ntt> Multi-stage linear array antenna
GB2205946B (en) 1985-03-21 1991-06-19 Donald Christian Knudsen Digital delay generator for sonar and radar beam formers
FR2581255B1 (en) 1985-04-30 1989-01-06 Onera (Off Nat Aerospatiale) MICROWAVE DEPHASER, ESPECIALLY MILLIMETER WAVE, WITH PIEZOELECTRIC CONTROL
FR2581254B1 (en) * 1985-04-30 1988-09-16 Onera (Off Nat Aerospatiale) MICROWAVE DEPHASER, ESPECIALLY MILLIMETER WAVE, WITH PIEZOELECTRIC CONTROL AND ANTENNAS USING THE SAME
US4717918A (en) 1985-08-23 1988-01-05 Harris Corporation Phased array antenna
US4779097A (en) 1985-09-30 1988-10-18 The Boeing Company Segmented phased array antenna system with mechanically movable segments
GB2181304B (en) * 1985-10-03 1989-09-27 Gen Electric Plc Antenna feed polariser
US4670756A (en) 1986-04-07 1987-06-02 Hazeltine Corporation Phase shifter control
FR2706680B1 (en) 1986-07-04 1995-09-01 Onera (Off Nat Aerospatiale) Microwave microstrip and suspended dielectric phase shifter, and application to lobe scanning antenna arrays.
US4814774A (en) 1986-09-05 1989-03-21 Herczfeld Peter R Optically controlled phased array system and method
GB2196484B (en) 1986-10-24 1990-07-11 Marconi Co Ltd Phased array antenna system
SE458569B (en) * 1987-02-25 1989-04-10 Erik Eklund ROTATOR DEVICE FOR ANTENNA MASTER
US4849763A (en) 1987-04-23 1989-07-18 Hughes Aircraft Company Low sidelobe phased array antenna using identical solid state modules
US4791428A (en) 1987-05-15 1988-12-13 Ray J. Hillenbrand Microwave receiving antenna array having adjustable null direction
US4804899A (en) * 1987-05-18 1989-02-14 Gerard A. Wurdack & Associates, Inc. Antenna rotator controllers and conversion systems therefor
US4941200A (en) 1987-08-03 1990-07-10 Orion Industries, Inc. Booster
JPH01120906A (en) 1987-11-05 1989-05-12 Nec Corp Two-dimension phased array antenna
US5281974A (en) 1988-01-11 1994-01-25 Nec Corporation Antenna device capable of reducing a phase noise
US4788515A (en) 1988-02-19 1988-11-29 Hughes Aircraft Company Dielectric loaded adjustable phase shifting apparatus
US4881082A (en) 1988-03-03 1989-11-14 Motorola, Inc. Antenna beam boundary detector for preliminary handoff determination
AU622444B2 (en) 1988-04-12 1992-04-09 Nemoto Project Industry Co., Ltd. Antenna apparatus and attitude control method
US5181042A (en) 1988-05-13 1993-01-19 Yagi Antenna Co., Ltd. Microstrip array antenna
US4843355A (en) 1988-06-14 1989-06-27 Colby Instruments, Inc. Programmable mechanical delay line
US5170140A (en) 1988-08-11 1992-12-08 Hughes Aircraft Company Diode patch phase shifter insertable into a waveguide
JPH0265401A (en) 1988-08-31 1990-03-06 Mitsubishi Electric Corp Data transfer equipment for antenna control
DE3934155C2 (en) 1988-10-13 1999-10-07 Mitsubishi Electric Corp Method for measuring an amplitude and a phase of each antenna element of a phase-controlled antenna arrangement and antenna arrangement for performing the method
JPH02121504A (en) 1988-10-31 1990-05-09 Nec Corp Plane antenna
JP2567688B2 (en) 1988-12-26 1996-12-25 日本電信電話株式会社 Tilt antenna
JPH02174403A (en) 1988-12-27 1990-07-05 Daicel Chem Ind Ltd Variable beam tilt type array antenna for wall face mount
JPH0793532B2 (en) 1988-12-27 1995-10-09 原田工業株式会社 Flat patch antenna
US5081463A (en) 1989-04-13 1992-01-14 Mitsubishi Denki Kabushiki Kaisha Method and system for forming desired radiation pattern with array antenna
JPH06105959B2 (en) 1989-04-24 1994-12-21 三菱電機株式会社 Electronic scanning array antenna device
JPH02290306A (en) 1989-04-27 1990-11-30 Nec Ic Microcomput Syst Ltd Plane antenna for receiving satellite broadcast
US5027126A (en) 1989-05-17 1991-06-25 Raytheon Company Beam steering module
US5117503A (en) 1989-10-02 1992-05-26 Motorola, Inc. Directional antenna arrangement method for simulcast broadcasting
DE3934716A1 (en) 1989-10-18 1991-04-25 Standard Elektrik Lorenz Ag PHASE-CONTROLLED GROUP ANTENNA FOR A MICROWAVE LANDING SYSTEM (MLS)
JP2569868B2 (en) 1990-02-26 1997-01-08 三菱電機株式会社 Antenna device
JP2580832B2 (en) 1990-04-19 1997-02-12 日本電気株式会社 Mobile mounted antenna controller
NZ235010A (en) * 1990-08-22 1993-12-23 Deltec New Zealand Dipole panel antenna with electrically tiltable beam.
US5115217A (en) 1990-12-06 1992-05-19 California Institute Of Technology RF tuning element
US5809395A (en) 1991-01-15 1998-09-15 Rogers Cable Systems Limited Remote antenna driver for a radio telephony system
FI91344C (en) 1991-03-05 1994-06-10 Nokia Telecommunications Oy Cellular radio network, base station and method for regionally adjusting traffic capacity in a cellular radio network
JPH04286407A (en) 1991-03-15 1992-10-12 Matsushita Electric Works Ltd Plane antenna
US5227806A (en) 1991-03-20 1993-07-13 Japan Radio Co., Ltd. Stabilized ship antenna system for satellite communication
US5162803A (en) 1991-05-20 1992-11-10 Trw Inc. Beamforming structure for modular phased array antennas
US5214364A (en) * 1991-05-21 1993-05-25 Zenith Data Systems Corporation Microprocessor-based antenna rotor controller
US5175556A (en) * 1991-06-07 1992-12-29 General Electric Company Spacecraft antenna pattern control system
JP2949533B2 (en) 1991-09-03 1999-09-13 日本電信電話株式会社 Mobile communication wireless zone configuration method
DE4134357A1 (en) * 1991-10-17 1993-04-22 Standard Elektrik Lorenz Ag MESSAGE TRANSFER SYSTEM
JP3120497B2 (en) 1991-10-25 2000-12-25 住友電気工業株式会社 Distribution phase shifter
JP2765323B2 (en) 1991-12-12 1998-06-11 日本電気株式会社 Tracking antenna initial acquisition device
US5805996A (en) 1991-12-13 1998-09-08 Nokia Telecommunications Oy Base station with antenna coverage directed into neighboring cells based on traffic load
FI90384C (en) 1991-12-13 1994-01-25 Nokia Telecommunications Oy The cellular radio system
JP2866775B2 (en) 1991-12-26 1999-03-08 三星電子株式会社 Antenna moving device and method
JPH05191129A (en) 1992-01-13 1993-07-30 Nippon Telegr & Teleph Corp <Ntt> Tilt beam antenna
US5241087A (en) 1992-03-09 1993-08-31 Bend Research, Inc. Enantiomeric enrichment of cyanohydrins
CA2097122A1 (en) 1992-06-08 1993-12-09 James Hadzoglou Adjustable beam tilt antenna
US5274382A (en) 1992-07-06 1993-12-28 Datron Systems, Incorporated Antenna system for tracking of satellites
AU664625B2 (en) 1992-07-17 1995-11-23 Radio Frequency Systems Pty Limited Phase shifter
DE4230252A1 (en) 1992-09-10 1994-03-17 Deutsche Aerospace Circuit arrangement for operating a broadband phase-controlled group antenna
EP0593822B1 (en) * 1992-10-19 1996-11-20 Nortel Networks Corporation Base station antenna arrangement
FR2697679B1 (en) * 1992-10-30 1994-11-25 Thomson Csf Electromagnetic wave phase shifter and application to an electronic scanning antenna.
US5488737A (en) 1992-11-17 1996-01-30 Southwestern Bell Technology Resources, Inc. Land-based wireless communications system having a scanned directional antenna
JPH06196927A (en) 1992-12-24 1994-07-15 N T T Idou Tsuushinmou Kk Beam tilt antenna
JP3324243B2 (en) 1993-03-30 2002-09-17 三菱電機株式会社 Antenna device and antenna system
JPH06326501A (en) 1993-05-12 1994-11-25 Sumitomo Electric Ind Ltd Distribution variable phase shifter
GB2281176B (en) 1993-08-12 1998-04-08 Northern Telecom Ltd Base station antenna arrangement
DE69431582T2 (en) * 1993-08-12 2003-03-06 Nortel Networks Ltd Antenna device for base station
JPH0795112A (en) 1993-09-20 1995-04-07 Fujitsu Ltd Digital mobile radio equipment
US5801600A (en) 1993-10-14 1998-09-01 Deltec New Zealand Limited Variable differential phase shifter providing phase variation of two output signals relative to one input signal
JP2944408B2 (en) 1994-01-24 1999-09-06 日本電気株式会社 Control device and control method for moving object mounted antenna
US5583514A (en) 1994-03-07 1996-12-10 Loral Aerospace Corp. Rapid satellite acquisition device
US5818385A (en) 1994-06-10 1998-10-06 Bartholomew; Darin E. Antenna system and method
US5621752A (en) 1994-06-23 1997-04-15 Qualcomm Incorporated Adaptive sectorization in a spread spectrum communication system
US5623270A (en) 1994-10-12 1997-04-22 Riverside Research Institute Phased array antenna
US6198458B1 (en) 1994-11-04 2001-03-06 Deltec Telesystems International Limited Antenna control system
US5860056A (en) 1995-01-19 1999-01-12 Uniden America Corporation Satellite information update system
US5661488A (en) 1995-06-21 1997-08-26 Kabushiki Kaisha Toshiba Antenna drive apparatus equipped with a stepping motor
US5610617A (en) 1995-07-18 1997-03-11 Lucent Technologies Inc. Directive beam selectivity for high speed wireless communication networks
US5617103A (en) 1995-07-19 1997-04-01 The United States Of America As Represented By The Secretary Of The Army Ferroelectric phase shifting antenna array
US6188373B1 (en) * 1996-07-16 2001-02-13 Metawave Communications Corporation System and method for per beam elevation scanning
US5798675A (en) * 1997-02-25 1998-08-25 Radio Frequency Systems, Inc. Continuously variable phase-shifter for electrically down-tilting an antenna
US5977740A (en) * 1997-05-14 1999-11-02 Itt Manufacturing Enterprises, Inc. Brake-by-wire system with switched reluctance motor controller
DE69836301T2 (en) * 1997-07-29 2007-06-06 Toyota Jidosha Kabushiki Kaisha, Toyota Electrically operated brake system with an electric brake motor actuator for obtaining a relationship between engine power and braking torque
US6044252A (en) 1997-11-26 2000-03-28 Motorola, Inc. Method and apparatus for switching between operating channels with different time references
US5995062A (en) 1998-02-19 1999-11-30 Harris Corporation Phased array antenna
US5905462A (en) * 1998-03-18 1999-05-18 Lucent Technologies, Inc. Steerable phased-array antenna with series feed network
US5973568A (en) 1998-06-01 1999-10-26 Motorola Inc. Power amplifier output module for dual-mode digital systems
JP4286407B2 (en) 1999-10-29 2009-07-01 北陸電気工業株式会社 Piezoelectric three-axis acceleration sensor
EP1845574B1 (en) 2005-01-24 2015-07-08 Yamaha Hatsudoki Kabushiki Kaisha Fuel cell system and start method thereof
JP5121902B2 (en) 2010-09-10 2013-01-16 株式会社東芝 Magnetic recording medium
JP5121915B2 (en) 2010-12-07 2013-01-16 中国電力株式会社 Method and apparatus for treating jellyfish at water intake of power plant

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060066494A1 (en) * 2003-02-24 2006-03-30 Zdenek Trejtnar Radiocommunications antenna with misalignment of radiation lobe by variable phase shifter
US7286092B2 (en) * 2003-02-24 2007-10-23 Jaybeam Limited Radiocommunications antenna with misalignment of radiation lobe by variable phase shifter
US20060068849A1 (en) * 2004-09-29 2006-03-30 Bernhard Urs P Interference control in CDMA networks
FR2897474A1 (en) * 2006-02-10 2007-08-17 Athos Dev Sarl DEVICE FOR SUPPORTING AND ORIENTING AT LEAST ONE ANTENNA PROVIDED WITH AN ADJUSTMENT ROD, RELAY AND NETWORK EQUIPPED WITH SUCH A DEVICE.
WO2007093689A1 (en) * 2006-02-10 2007-08-23 Conception Etude Entretien En Electronique Et Mecanique Device for supporting and steering at least one antenna provided with an adjusting rod, relay and network equipped with same
US8624789B2 (en) * 2007-11-30 2014-01-07 Ace Antenna Corp. Apparatus for adjusting an inclination angle in an antenna
US20110134005A1 (en) * 2007-11-30 2011-06-09 Ace Antenna Corporation Apparatus for adjusting an inclination angle in an antenna
WO2011116862A1 (en) * 2010-03-26 2011-09-29 Kathrein-Werke Kg Multi-beamforming deviceg
US20110237315A1 (en) * 2010-03-26 2011-09-29 Kathrein-Werke Kg Multi-beam-shaping structure
US8391926B2 (en) 2010-03-26 2013-03-05 Kathrein-Werke Kg Multi-beam-shaping structure
US9496607B2 (en) 2010-11-23 2016-11-15 Huawei Technologies Co., Ltd. Antenna apparatus, antenna system, and antenna electrical tilting method
US10122082B2 (en) 2010-11-23 2018-11-06 Huawei Technologies Co., Ltd. Antenna apparatus, antenna system, and antenna electrical tilting method
US10756427B2 (en) 2010-11-23 2020-08-25 Huawei Technologies Co., Ltd. Antenna apparatus, antenna system, and antenna electrical tilting method
US11552394B2 (en) 2010-11-23 2023-01-10 Huawei Technologies Co. Ltd. Antenna apparatus, antenna system, and antenna electrical tilting method

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