WO1989009501A1 - Flat plate array antenna - Google Patents

Flat plate array antenna Download PDF

Info

Publication number
WO1989009501A1
WO1989009501A1 PCT/GB1989/000330 GB8900330W WO8909501A1 WO 1989009501 A1 WO1989009501 A1 WO 1989009501A1 GB 8900330 W GB8900330 W GB 8900330W WO 8909501 A1 WO8909501 A1 WO 8909501A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
antenna
plates
centre
horns
Prior art date
Application number
PCT/GB1989/000330
Other languages
French (fr)
Inventor
John Louis Frederick Charles Collins
Original Assignee
British Satellite Broadcasting Limited
Fortel Technology Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB888807629A external-priority patent/GB8807629D0/en
Priority claimed from GB888826159A external-priority patent/GB8826159D0/en
Priority claimed from GB898902134A external-priority patent/GB8902134D0/en
Application filed by British Satellite Broadcasting Limited, Fortel Technology Limited filed Critical British Satellite Broadcasting Limited
Publication of WO1989009501A1 publication Critical patent/WO1989009501A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/061—Two dimensional planar arrays
    • H01Q21/064—Two dimensional planar arrays using horn or slot aerials

Definitions

  • This invention relates to a flat plate array antenna.
  • the invention r «elates to a flat plate array antenna for reception and transmission of circularly or linearly polarised high frequency signals.
  • a flat plate antenna comprising at least two plates positioned face to face, and a conductive sheet between the plates, the plates being configured to define a plurality of horns and an open-sided channel which is closed by the conductive sheet to form a waveguide.
  • a flat plate antenna comprising a top plate, a centre plate and a base plate, a first thin conductive sheet interposed between the top plate and the centre plate and a second thin conductive sheet interposed between the centre plate and the base plate r the to r centre and base plates being provided with aligned openings defining a plurality of horns.
  • the horns may be adapted to receive circularly polarised high frequency signals.
  • At least one channel is provided adjacent the plane of joining of the top and centre plates and/or at the plane of joining of the centre and base plates, said channel being adapted to form a waveguide.
  • the channel may be formed in either of the plates adjacent said joining planes and in the form of an open channel which is closed by the respective thin metallic sheet.
  • the channel may be adapted to receive a feeder line.
  • a flat plate array antenna comprising a top plate in which there are formed a plurality of horn radiating elements, a bottom plate in which there is formed a waveguide supply network and an electrically conductive shim interposed between the top plate and the bottom plate.
  • each of the plates referred to above, or at least one of the plates is formed from moulded plastics material.
  • the horn is of stepped cross- section.
  • the horn is provided with a septum polariser.
  • Fig. 1 is a sectional view of a_ first embodiment of a thin plate array antenna made in accordance with the present invention
  • Fig. 2 is a sectional view taken along the line II-II of Fig. 1;
  • Fig. 3 is a sectional view taken along the line III-III of Fig. 1;
  • Figs. 4a-4d are views of the top plate of the antenna of Fig. 1, Figs. 4a and 4b being respectively plan and section views and Figs. 4c and 4d being respectively enlarged plan and section views of part of the plate;
  • Figs. 5a-5d are views of the centre plate of the antenna, Fig. 5a being a plan view, Fig. 5b a plan view of just a few of the horn-defining openings, Fig. 5c a section view along line A-A of Fig. 5b, and Fig. 5d showing an alternative cross-sectional configura ion; Figs. 6a-6d are views similar to Figs. 5a-5d, but showing the base plate of the antenna; Fig. 7 is an exploded view showing the three elements of a second embodiment of an antenna according to the invention;
  • Fig. 8 is a cross-section through part of the assembled antenna of Fig. 7;
  • Figs. 9 and 10 are sectional views at right angles respectively through the ⁇ centre of one horn illustrating the septum polariser.
  • Fig. 11 is a top plan view of part of the antenna.
  • an antenna comprises a top plate 4, a centre plate 5 and a base plate 6.
  • the top plate and centre plate are separated by a thin metallic conductive sheet 45 and the centre plate and base plate are separated by a similar thin metallic conductive sheet 56.
  • each of the plates is designated 40, 50 and 60 respectively.
  • a plurality of channels 51 is provided on the top surface of the centre plate, the channels being adapted to carry a top feeder line 52, the channels are open channels but are converted into suitable waveguide closed channels by the sheet 45.
  • channels 61 carrying bottom feeder lines 62, are provided in the base plate 6, the channels 61 being closed by the sheet 56.
  • the plates 4, 5 and 6 may each be made of metal, or of plastics material which is metallised over at least part of its surface to form a conductive layer thereon.
  • the material may be formed in the required shape by moulding.
  • a polariser (not shown) may be placed in front of the antenna in dependence on whether or not the antenna is for use with circularly or linearly polarised signals.
  • a flat plate array antenna comprises a top plate 10, a bottom plate 11 and an electrically conductive shim 12 interposed between the lower surface of the top plate
  • the top plate 10 is provided with a rectangular array of radiating elements in the form of horns 100 which in cross-section are stepped.
  • the shim 12 is provided with a corresponding plurality of apertures 120 which correspond with the lowermost rectangular opening in each of the horns 100 and with channels 111 formed in the bottom plate 11.
  • the channels 111 form part of a planar, tree- structured type supply network. No feeder lines are used in this embodiment.
  • the top plate and bottom plate are formed of plastics material to permit their re_ady manufacture at reasonable cost.
  • Each horn 100 is provided with a separate septum polariser 101 which in essence divides the horn into a receiving channel 102 and a reflecting channel 103.
  • the channel 111 which is formed in the bottom plate 11 is provided with a stepped portion 112 in order that the received signal propagates in a more efficient manner.

Abstract

A flat plate array antenna is formed of two or more plates (4, 5, 6) with a thin conductive sheet (45, 56) interposed between each pair of plates. The plates are configured to define horns and at least one open-sided channel which is closed by the conductive sheet to form a waveguide for supplying signals to or from the antenna. The plates may each be formed of moulded plastics material having a conductive layer over at least part of the surface and formed by metallisation of the plastics moulding.

Description

FLAT PLATE ARRAY ANTENNA
This invention relates to a flat plate array antenna.
In particular the invention r«elates to a flat plate array antenna for reception and transmission of circularly or linearly polarised high frequency signals.
It is an object of the present invention to provide a flat plate antenna which is light in weight and relatively inexpensive to manufacture, and which may be moulded from plastics material.
According to one aspect of the invention there is provided a flat plate antenna comprising at least two plates positioned face to face, and a conductive sheet between the plates, the plates being configured to define a plurality of horns and an open-sided channel which is closed by the conductive sheet to form a waveguide.
According to a further aspect of the present invention there is provided a flat plate antenna comprising a top plate, a centre plate and a base plate, a first thin conductive sheet interposed between the top plate and the centre plate and a second thin conductive sheet interposed between the centre plate and the base plate r the to r centre and base plates being provided with aligned openings defining a plurality of horns. The horns may be adapted to receive circularly polarised high frequency signals.
Preferably, at least one channel is provided adjacent the plane of joining of the top and centre plates and/or at the plane of joining of the centre and base plates, said channel being adapted to form a waveguide. The channel may be formed in either of the plates adjacent said joining planes and in the form of an open channel which is closed by the respective thin metallic sheet. The channel may be adapted to receive a feeder line.
According to a still further aspect of the present invention there is provided a flat plate array antenna comprising a top plate in which there are formed a plurality of horn radiating elements, a bottom plate in which there is formed a waveguide supply network and an electrically conductive shim interposed between the top plate and the bottom plate.
Preferably, each of the plates referred to above, or at least one of the plates, is formed from moulded plastics material.
Preferably also, the horn is of stepped cross- section.
Preferably also, the horn is provided with a septum polariser.
Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:-
Fig. 1 is a sectional view of a_ first embodiment of a thin plate array antenna made in accordance with the present invention; Fig. 2 is a sectional view taken along the line II-II of Fig. 1;
Fig. 3 is a sectional view taken along the line III-III of Fig. 1;
Figs. 4a-4d are views of the top plate of the antenna of Fig. 1, Figs. 4a and 4b being respectively plan and section views and Figs. 4c and 4d being respectively enlarged plan and section views of part of the plate;
Figs. 5a-5d are views of the centre plate of the antenna, Fig. 5a being a plan view, Fig. 5b a plan view of just a few of the horn-defining openings, Fig. 5c a section view along line A-A of Fig. 5b, and Fig. 5d showing an alternative cross-sectional configura ion; Figs. 6a-6d are views similar to Figs. 5a-5d, but showing the base plate of the antenna; Fig. 7 is an exploded view showing the three elements of a second embodiment of an antenna according to the invention;
Fig. 8 is a cross-section through part of the assembled antenna of Fig. 7;
Figs. 9 and 10 are sectional views at right angles respectively through the ^centre of one horn illustrating the septum polariser; and
Fig. 11 is a top plan view of part of the antenna.
Referring to Figures 1 to 6 of the drawings, an antenna comprises a top plate 4, a centre plate 5 and a base plate 6. The top plate and centre plate are separated by a thin metallic conductive sheet 45 and the centre plate and base plate are separated by a similar thin metallic conductive sheet 56.
To reduce weight, material is removed from each of the plates, said material being designated 40, 50 and 60 respectively. A plurality of channels 51 is provided on the top surface of the centre plate, the channels being adapted to carry a top feeder line 52, the channels are open channels but are converted into suitable waveguide closed channels by the sheet 45.
In an analogous manner channels 61, carrying bottom feeder lines 62, are provided in the base plate 6, the channels 61 being closed by the sheet 56. The above described arrangement, wherein material is removed from the plates, results in a considerably cheaper and lightweight construction.
The waveguide functional characteristics required of the channels 51 and 61 which would be absent due to the missing material 40 and 50 is restored by the metallic sheets 45 and 56.
The plates 4, 5 and 6 may each be made of metal, or of plastics material which is metallised over at least part of its surface to form a conductive layer thereon. The material may be formed in the required shape by moulding.
A polariser (not shown) may be placed in front of the antenna in dependence on whether or not the antenna is for use with circularly or linearly polarised signals.
Referring to Figs. 7 to 11, in this embodiment a flat plate array antenna comprises a top plate 10, a bottom plate 11 and an electrically conductive shim 12 interposed between the lower surface of the top plate
10 and the upper surface of the bottom plate 11.
The top plate 10 is provided with a rectangular array of radiating elements in the form of horns 100 which in cross-section are stepped. The shim 12 is provided with a corresponding plurality of apertures 120 which correspond with the lowermost rectangular opening in each of the horns 100 and with channels 111 formed in the bottom plate 11. The channels 111 form part of a planar, tree- structured type supply network. No feeder lines are used in this embodiment.
The top plate and bottom plate are formed of plastics material to permit their re_ady manufacture at reasonable cost.
Each horn 100 is provided with a separate septum polariser 101 which in essence divides the horn into a receiving channel 102 and a reflecting channel 103. The channel 111 which is formed in the bottom plate 11 is provided with a stepped portion 112 in order that the received signal propagates in a more efficient manner.
Modifications and improvements may be incorporated without departing from the scope of the invention.

Claims

CLAIMS :
1. A flat plate antenna comprising at least two plates positioned face to face, and a conductive sheet between the plates, the plates being configured to define a plurality of horns and an open-sided channel which is closed by the conductive sheet to form a waveguide.
2. A flat plate array antenna comprising a top plate in which there are formed a plurality of horn radiating elements, a bottom plate in which there is formed a waveguide supply network, and an electrically conductive shim interposed between the top plate and the bottom plate.
3. An antenna as claimed in claim 2, in which the waveguide supply network is formed by at least one open-sided channel which is closed by the electrically conductive shim.
4. A flat plate antenna comprising a top plate, a centre plate and a base plate, a first thin conductive sheet interposed between the top plate and the centre plate, and a second thin conductive sheet interposed between the centre plate and the base plate, wherein the top, centre and base plates are provided with aligned openings defining a plurality of horns.
5. An antenna as claimed in claim 4, wherein at least one of the plates is provided with at least one open-sided channel which is closed by one of the conductive sheets and which forms a waveguide.
6. An antenna as claimed in any preceding claim, wherein at least one of the plates is formed of plastics material having a conductive- layer over at least part of its surface.
7. An antenna as claimed in any preceding claim, wherein the horns are of stepped cross- section.
-__.
8. An antenna as claimed in any preceding claim, wherein the horns are provided with septum polarisers.
PCT/GB1989/000330 1988-03-30 1989-03-30 Flat plate array antenna WO1989009501A1 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB888807629A GB8807629D0 (en) 1988-03-30 1988-03-30 Flat plate array antenna
GB8807629.4 1988-03-30
GB888826159A GB8826159D0 (en) 1988-11-08 1988-11-08 Flat plate array antenna
GB8826159.9 1988-11-08
GB8902134.9 1989-02-01
GB898902134A GB8902134D0 (en) 1989-02-01 1989-02-01 Flat plate array antenna

Publications (1)

Publication Number Publication Date
WO1989009501A1 true WO1989009501A1 (en) 1989-10-05

Family

ID=27263846

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1989/000330 WO1989009501A1 (en) 1988-03-30 1989-03-30 Flat plate array antenna

Country Status (2)

Country Link
AU (1) AU3417289A (en)
WO (1) WO1989009501A1 (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0383597A2 (en) * 1989-02-15 1990-08-22 Sharp Kabushiki Kaisha Planar antenna
GB2238914A (en) * 1989-11-27 1991-06-12 Matsushita Electric Works Ltd Waveguide feeding array antenna
WO1991020109A1 (en) * 1990-06-14 1991-12-26 Collins John Louis Frederick C Microwave antennas
GB2247990A (en) * 1990-08-09 1992-03-18 British Satellite Broadcasting Antennas and method of manufacturing thereof
EP0570863A2 (en) * 1992-05-22 1993-11-24 Siemens Aktiengesellschaft Surveillance radar antenna in flat configuration
US5426442A (en) * 1993-03-01 1995-06-20 Aerojet-General Corporation Corrugated feed horn array structure
US5495262A (en) * 1992-05-07 1996-02-27 Hughes Aircraft Company Molded plastic microwave antenna
WO1996039730A1 (en) * 1995-06-05 1996-12-12 Alexandr Danilovich Khristich High-frequency flat antenna array
GB2301486B (en) * 1994-02-26 1998-07-08 Fortel Technology Ltd A method of manufacturing an antenna
WO1998057391A1 (en) * 1997-06-13 1998-12-17 Thomson-Csf Integrated transmitter or receiver device
KR100329131B1 (en) * 1998-01-13 2002-03-18 글렌 에이치. 렌젠, 주니어 Boxhorn array architecture using folded junctions
WO2006061865A1 (en) * 2004-12-10 2006-06-15 Space Engineering S.P.A. High efficiency antenna and related manufacturing process
WO2007046055A2 (en) * 2005-10-16 2007-04-26 Starling Advanced Communications Ltd. Dual polarization planar array antenna and radiating element therefor
WO2012110366A1 (en) * 2011-02-17 2012-08-23 Huber+Suhner Ag Array antenna
CN101322284B (en) * 2005-10-16 2013-03-06 松下航空电子设备公司 Dual polarization planar array antenna and radiating element therefor
US8558746B2 (en) 2011-11-16 2013-10-15 Andrew Llc Flat panel array antenna
GB2517260A (en) * 2013-08-15 2015-02-18 Univ Tsinghua Waveguide horn arrays, methods for forming the same and antenna systems
US8964891B2 (en) 2012-12-18 2015-02-24 Panasonic Avionics Corporation Antenna system calibration
EP2947717A4 (en) * 2013-01-21 2016-09-28 Nec Corp Antenna
US9583829B2 (en) 2013-02-12 2017-02-28 Panasonic Avionics Corporation Optimization of low profile antenna(s) for equatorial operation
US9899722B2 (en) 2015-01-15 2018-02-20 Mti Wireless Edge, Ltd. Antenna formed from plates and methods useful in conjunction therewith

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108463A1 (en) * 1982-11-08 1984-05-16 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Radiating element for cross-polarized microwave signals and planar antenna consisting of an array of such elements
EP0205212A1 (en) * 1985-06-04 1986-12-17 Laboratoires D'electronique Philips Modular microwave antenna units and antenna composed of such units
EP0228743A1 (en) * 1985-12-20 1987-07-15 Philips Composants Plane microwave antenna for the simultaneous reception of two polarizations
WO1988001444A1 (en) * 1986-08-13 1988-02-25 Integrated Visual, Inc. Flat phased array antenna
EP0089084B1 (en) * 1982-03-12 1988-03-02 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Flat microwave antenna structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0089084B1 (en) * 1982-03-12 1988-03-02 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Flat microwave antenna structure
EP0108463A1 (en) * 1982-11-08 1984-05-16 Laboratoires D'electronique Et De Physique Appliquee L.E.P. Radiating element for cross-polarized microwave signals and planar antenna consisting of an array of such elements
EP0205212A1 (en) * 1985-06-04 1986-12-17 Laboratoires D'electronique Philips Modular microwave antenna units and antenna composed of such units
EP0228743A1 (en) * 1985-12-20 1987-07-15 Philips Composants Plane microwave antenna for the simultaneous reception of two polarizations
WO1988001444A1 (en) * 1986-08-13 1988-02-25 Integrated Visual, Inc. Flat phased array antenna

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Electronics Letters, vol. 18, no. 6, E. Rammos: "New wideband high-gain stripline planar array for 12 GHz satellite TV", pages 252,253 *

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0383597A3 (en) * 1989-02-15 1991-01-02 Sharp Kabushiki Kaisha Planar antenna
EP0383597A2 (en) * 1989-02-15 1990-08-22 Sharp Kabushiki Kaisha Planar antenna
GB2238914A (en) * 1989-11-27 1991-06-12 Matsushita Electric Works Ltd Waveguide feeding array antenna
GB2238914B (en) * 1989-11-27 1994-05-04 Matsushita Electric Works Ltd Waveguide feeding array antenna
US5568160A (en) * 1990-06-14 1996-10-22 Collins; John L. F. C. Planar horn array microwave antenna
WO1991020109A1 (en) * 1990-06-14 1991-12-26 Collins John Louis Frederick C Microwave antennas
GB2247990A (en) * 1990-08-09 1992-03-18 British Satellite Broadcasting Antennas and method of manufacturing thereof
US5495262A (en) * 1992-05-07 1996-02-27 Hughes Aircraft Company Molded plastic microwave antenna
EP0570863A2 (en) * 1992-05-22 1993-11-24 Siemens Aktiengesellschaft Surveillance radar antenna in flat configuration
EP0570863A3 (en) * 1992-05-22 1994-04-13 Siemens Ag
US5426442A (en) * 1993-03-01 1995-06-20 Aerojet-General Corporation Corrugated feed horn array structure
GB2301486B (en) * 1994-02-26 1998-07-08 Fortel Technology Ltd A method of manufacturing an antenna
WO1996039730A1 (en) * 1995-06-05 1996-12-12 Alexandr Danilovich Khristich High-frequency flat antenna array
WO1998057391A1 (en) * 1997-06-13 1998-12-17 Thomson-Csf Integrated transmitter or receiver device
FR2764738A1 (en) * 1997-06-13 1998-12-18 Thomson Csf INTEGRATED TRANSMISSION OR RECEPTION DEVICE
KR100329131B1 (en) * 1998-01-13 2002-03-18 글렌 에이치. 렌젠, 주니어 Boxhorn array architecture using folded junctions
WO2006061865A1 (en) * 2004-12-10 2006-06-15 Space Engineering S.P.A. High efficiency antenna and related manufacturing process
CN101322284B (en) * 2005-10-16 2013-03-06 松下航空电子设备公司 Dual polarization planar array antenna and radiating element therefor
WO2007046055A3 (en) * 2005-10-16 2007-12-06 Starling Advanced Comm Ltd Dual polarization planar array antenna and radiating element therefor
WO2007046055A2 (en) * 2005-10-16 2007-04-26 Starling Advanced Communications Ltd. Dual polarization planar array antenna and radiating element therefor
US9640870B2 (en) 2011-02-17 2017-05-02 Huber+Suhner Ag Array antenna
CH704552A1 (en) * 2011-02-17 2012-08-31 Huber+Suhner Ag Array antenna.
WO2012110366A1 (en) * 2011-02-17 2012-08-23 Huber+Suhner Ag Array antenna
US8558746B2 (en) 2011-11-16 2013-10-15 Andrew Llc Flat panel array antenna
US8964891B2 (en) 2012-12-18 2015-02-24 Panasonic Avionics Corporation Antenna system calibration
EP2947717A4 (en) * 2013-01-21 2016-09-28 Nec Corp Antenna
US9692117B2 (en) 2013-01-21 2017-06-27 Nec Corporation Antenna
US9583829B2 (en) 2013-02-12 2017-02-28 Panasonic Avionics Corporation Optimization of low profile antenna(s) for equatorial operation
GB2517260A (en) * 2013-08-15 2015-02-18 Univ Tsinghua Waveguide horn arrays, methods for forming the same and antenna systems
EP2838160A1 (en) * 2013-08-15 2015-02-18 Tsinghua University Waveguide horn arrays, methods for forming the same and antenna systems
JP2015037319A (en) * 2013-08-15 2015-02-23 清華大學 Waveguide horn array and its method, and antenna system
US9899722B2 (en) 2015-01-15 2018-02-20 Mti Wireless Edge, Ltd. Antenna formed from plates and methods useful in conjunction therewith
US10205213B2 (en) 2015-01-15 2019-02-12 Mti Wireless Edge, Ltd. Antenna formed from plates and methods useful in conjunction therewith

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