US2667578A - Swivel joint for coaxial transmission lines - Google Patents
Swivel joint for coaxial transmission lines Download PDFInfo
- Publication number
- US2667578A US2667578A US141564A US14156450A US2667578A US 2667578 A US2667578 A US 2667578A US 141564 A US141564 A US 141564A US 14156450 A US14156450 A US 14156450A US 2667578 A US2667578 A US 2667578A
- Authority
- US
- United States
- Prior art keywords
- swivel joint
- coaxial
- line section
- reflector
- antenna
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R35/00—Flexible or turnable line connectors, i.e. the rotation angle being limited
- H01R35/04—Turnable line connectors with limited rotation angle with frictional contact members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R39/00—Rotary current collectors, distributors or interrupters
- H01R39/64—Devices for uninterrupted current collection
Definitions
- SWIVEL JOINT FOR COAXIAL TRANSMISSION LINES Filed Jan. 51, 1950 v 2 Sheets-Sheet 2 L CONCENTRIG MOVEMENT afi TT BY EQRL ON Patented Jan. 26, 1954 SWIVEL JOINT FOR COAXIAL TRANSMISSION LINES Wilford J. Barnett, Venice, and Clarence G. Carlson, Inglewood, Calif.,
- This invention relates to a directive antenna assembly and more particularly to a directive antenna assembly in which a transmission line swivel joint accommodates movements of a directive antenna.
- the principal object of the invention is to provide an improved directive antenna assembly in which a single coaxial joint of special structure accommodates conical scanning action of a directive antenna and simultaneous angular displacements of the directive antenna, about its transverse axes.
- Another important object is to provide a novel coaxial line swivel joint Which permits both continuous rotation of, and universal angular movement between, transmission components connected thereto.
- Fig. 1 represents a directive antenna structure embodying principles of the present invention
- Fig. 2 represents a modified antenna structure in which the swivel joint accommodates continuous rotation.
- Each embodiment is in part shown in essentially a schematic manner without inclusion of such details as do not directly relate to the inventive concepts here disclosed, for many mechanical details or variations will occur to those skilled in the art Without involving any departure from the spirit and scope of the invention.
- a frame member 2 which may be here regarded as a fixed support or platform. Extending through frame member 2 and immovable with respect thereto is a coaxial line 4 which, together with another section of coaxial line 6, and a swivel joint 8 having a stationary member I ll and a movable member l2, provides a transmission path for transfer of energy to or from a directive antenna M.
- the directiv antenna may utilize the usual dipole type of electromagnetic energy radiator (not shown), connected to coaxial line 6 in conventional manner.
- the directive antenna here shown includes a paraboloidal reflector l6 and is arranged for nutating and conical scanning action for purposes which are conventional and familiar to those versed in the art. To this end, reflector I6 is supported for continuous spinning action upon movable member l2 of the swivel joint, in
- a ring hearing 24 having its outer race 26 secured to reflector l6 and its inner race 28 supported upon movable member IZ, enables reflector 16 to be rotated about the spin axis 2!).
- Spin axis 20 coincides with the axis of coaxial line 6 and extends through the phantom center 3!! of swivel joint 8,- as shown.
- Rotation of reflector l6 about spinaxis 2.) to produce conical scanning action may be efi'ected in any desired manner, for example simply by means of a gear (not shown) secured to the reflector l6 and driven from a suitable motive source.
- directive antenna I4 is rendered capable of searching or tracking move ents within a re atively large solid angle by means of a suit-.
- Linkage 32 couples movable member l2 to frame member 2 and functions to permit universal orientation of member l2, and of the structure carried thereby, about the swivel joints phantom center 33.
- the linking structure 32 may be a gimbal ring system, or may be a parallelogram type of linkage as taught in the previously cited Slobod patent.
- the particular types or details or linkage or bearing system which may be employed, however, are of no immediate importance here except insofar as they provide for angular orientation about center 30.
- Swivel joint 8 comprises mating ball and socket members formed or mounted upon both the inner and outer conductors of coaxial lines 4 and 6, and, in the embodiment here shown, suitably small air gaps are providedbetween theimating members to effect electrical continuity in microwave operation.
- Inner conductors 34 and 35 of coaxial lines 4 and 6, respectively, are held fixed relative to their respective outer conductors 50 and 4 3, as by means of polystyrene dielectric material indicated as 33.
- Inner conductor34 is provided with a pear-shaped protuberant element havinga spherical portion concentric to phantom center 30.
- a mating shell segment 42 having spherical inner and outer surfaces is secured .to inner conductor 36 of coaxial line 6, and is likewise so positioned as to be concentric to phantom center 30.
- the spherical socket member 44 from which extends outer conductor 46 of coaxial line 6, mates with a spherical shel1:or hollow ball segment 48 formed upon outer conductor 50 of coaxial line 4, and these elements are likewise positioned to be concentric to phantom center 33.
- the mating members of swivel joint 8, having spherical surfaces, and constrained bylinkage 32 to universal movements about center 30 .to which said surfaces are concentric remain spaced at substantially fixed gap distances from each other for all angles through which transmission line 6 may be displaced, as is necessary for satisfactory operation from a transmission line standpoint.
- outer socket member 44 is here in part provided by a removable ring member 52.
- first order reflections resulting from mismatch maybe prevented by maintaining a reasonably constant diametric ratio between inner conductors 34 and 4B and outer conductors and 46, respectively, Within the spherical region of the joint.
- This ratio and resulting dimensions may be modified to compensate for the effects of the necessary capacitive coupling existent at the gaps between the "mating coaxial terminations to maintain a substantially constant characteristic impedance.
- Still further modifications of dimensions might be dictated to allow sufficient angular movements between the mating coaxial members, as necessary for the 'antennas nutation.
- Fig. 1 One possible form of tapering is illustrated in Fig. 1 but many other forms exist, all of which may serve to pro-- vide the desired r'efiectionlesstransmission properties for the joint; and arewit'hin the scope and spirit of this invention.
- one manner of designing the swivel joint for attaining a '4 reasonably constant diametric ratio is to make the ratio of inner diameter of stationary member Hi to diameter of spherical portion of protuberant element 40, in the plane transverse to inner conductor 34 and through phantom center 3
- the swivel joint may be suitably dimensioned to accommodate coaxial lines of different sizes or types, bearing in mind that the particular size of line employed is determined by the frequency of the-electromagnetic energy coupled to the antenna.
- Fig. 1 illustrates a presently preferred assembly
- the described swivel joint may be employed in a directional antenna assembly in such manner that a conical scanning action of the directive beam may be accommodated by spinning action within the swivel joint.
- Fig. 2 in which parts corresponding to those in Fig. I bear like designations, reflector l6 may be mounted upon movablemem'ber l2, again in such manner that .its beam direction 18 makes asuitable angle with spin axis:2l).
- a ringbearing .54 having its outer race 55 supported for universal movement, relative to phantom center 30, by means of the linkage 32 as shown, and having its inner race 58 secured to the reflector assembly including movable member [2, enables directive antenna l4, as a unit, to be continuously rotated about spin axis 20.
- reflector I6 is carried by movable member l2 and may be rotated therewith about spin axis 20, as distinguished from the structure shown in Fig. 1 in which member 12 and the dipole radiator (not shown) fed therefrom are constrained against rotation about spin axis 20.
- An antenna reflector assembly comprising: a frame member; a first coaxial line section having an inner and an outer conductor, said first coaxial line section being connectable to a source of high frequency electromagnetic energy; means securing the outer conductor of said first line section to said frame member; a second coaxial line section having an inner and an outer conductor; a swivel joint capacitively coupling said first and second line sections for passing high frequency elecetrical energy therebetween, said joint comprising two pairs of spaced spherical mating elements having a common phantom center, one pair of said mating elements being connected to the inner conductors of said first and second line sections, respectively, and the other pair of said mating elements being connected to the outer conductors of said first and second line sections, respectively; an antenna reflector for radiating said energy mechanically coupled to the outer conductor of said second line section; and linkage means coupled between said frame member and the outer conductor of said second line section to mechanically support said reflector and said second line section for nutational movement relative to
- An antenna reflector assembly comprising: a frame member; a first coaxial line section having an inner and an outer conductor, said first coaxial line section being connectable to a source of high frequency electromagnetic energy; means securing the outer conductor of said first line section to said frame member; a second coaxial line section having an inner and an outer conductor; a swivel joint capacitively coupling said first and second line sections for passing high frequency electrical energy therebetween, said joint comprising two pairs of spaced spherical mating elements having a common phantom center, one pair of said mating elements being connected to the inner conductors of said first and second line sections, respectively, and the other pair of said mating elements being connected to the outer conductors of said first and second line sections, respectively the inner conductor of said first line section having a.
- An antenna reflector assembly comprising: a frame member; a first coaxial line section having an inner and an outer conductor, said first coaxial line section being connectable to a source of high frequency electromagnetic energy; means securing the outer conductor of said first line section to said frame member; a second coaxial line section having an inner and an outer conductor; a swivel joint capacitively coupling said first and second line sections for passing high frequency electrical energy therebetween, said joint comprising two pairs of spaced spherical mating elements having a common phantom center, one pair of said mating elements being connected to the inner conductors of said first and second line sections, respectively, and the other pair of said mating elements being connected to the outer conductors of said first and second line sections, respectively the inner conductor of said first line section having a portion thereof extending into said swivel joint and being proportioned to introduce an impedance to compensate for the impedance effect of the capacitive coupling between said two pairs of spaced spherical mating elements and
Description
2 SheetsSheet 1 FIG. I I
AL-m;
LINKAGE FOR CONCENTRIG MOVEMENT INVENTOR. WILFORD J BARNETT By CLARENCE G CARLSON Jan. 26, 1954 w. J. BARNETT' ET AL 2,667,573
SWIVEL JOINT FOR COAXIAL TRANSMISSION LINES Filed Jan. 51, 1950 v 2 Sheets-Sheet 2 L CONCENTRIG MOVEMENT afi TT BY EQRL ON Patented Jan. 26, 1954 SWIVEL JOINT FOR COAXIAL TRANSMISSION LINES Wilford J. Barnett, Venice, and Clarence G. Carlson, Inglewood, Calif.,
assignors to Hughes Tool Company, Houston, Tex., a corporation of Delaware Application January 31, 1950, Serial No. 141,564
3 Claims. (01. 250-33155) This invention relates to a directive antenna assembly and more particularly to a directive antenna assembly in which a transmission line swivel joint accommodates movements of a directive antenna.
Heretofore, it has been the general practice to provide a directive antenna assembly with a transmission line having a number of rigid sections coupled by several rotary joints, the rigid sections and rotary joints being suitably arranged 1 to accommodate the necessary angular displacements of the directive antenna. An incidental disclosure of a simplifying departure from this conventional rotary joint system is made in U. 8. Patent No. 2,411,472, issued November 19, 1946, to A. A. Slobod. The directive antenna there shown, intended for limited angular movements in airborne use, is connected to its waveguide feed line through the medium of a flexible section of waveguide and thus in effect is provided with a flexible transmission line joint, but without provision for rotary movements or conical scanning action of the antenna.
While a flexible waveguide joint such as shown in the abovementioned Slobod patent eliminates many of the mechanical and electrical complexities and attendant difficulties of the conventional rotary joint system, it nevertheless suffers the disadvantage of imposing suificient mechanical restraint to be undesirable in certain directive antenna applications, and this would be particularly true of a flexible coaxial cable counterpart of such a joint. This and certain other disadvantages in the use of a flexible section of transmission line as a motional joint are overcome by application of principles of the present invention, as will appear.
The principal object of the invention is to provide an improved directive antenna assembly in which a single coaxial joint of special structure accommodates conical scanning action of a directive antenna and simultaneous angular displacements of the directive antenna, about its transverse axes.
Another important object is to provide a novel coaxial line swivel joint Which permits both continuous rotation of, and universal angular movement between, transmission components connected thereto.
The features and combinations which are believed novel and characteristic of the invention are set forth with particularity irithe appended claims. The invention itself, however, and its further ob ects and advantages, may be best understood by reference to the following descrip- 2 tion, taken in connection with the accompanying drawing.
In the drawings, Fig. 1 represents a directive antenna structure embodying principles of the present invention; Fig. 2 represents a modified antenna structure in which the swivel joint accommodates continuous rotation. Each embodiment is in part shown in essentially a schematic manner without inclusion of such details as do not directly relate to the inventive concepts here disclosed, for many mechanical details or variations will occur to those skilled in the art Without involving any departure from the spirit and scope of the invention.
Referring now to Fig. 1 of the drawing, there is shown a frame member 2 which may be here regarded as a fixed support or platform. Extending through frame member 2 and immovable with respect thereto is a coaxial line 4 which, together with another section of coaxial line 6, and a swivel joint 8 having a stationary member I ll and a movable member l2, provides a transmission path for transfer of energy to or from a directive antenna M. The directiv antenna may utilize the usual dipole type of electromagnetic energy radiator (not shown), connected to coaxial line 6 in conventional manner. The directive antenna here shown includes a paraboloidal reflector l6 and is arranged for nutating and conical scanning action for purposes which are conventional and familiar to those versed in the art. To this end, reflector I6 is supported for continuous spinning action upon movable member l2 of the swivel joint, in
such manner that the reflectors beam directionor axis of symmetry l8 makes a constant small angle with respect to a spin axis 20. A ring hearing 24, having its outer race 26 secured to reflector l6 and its inner race 28 supported upon movable member IZ, enables reflector 16 to be rotated about the spin axis 2!). Spin axis 20 coincides with the axis of coaxial line 6 and extends through the phantom center 3!! of swivel joint 8,- as shown. Rotation of reflector l6 about spinaxis 2.) to produce conical scanning action may be efi'ected in any desired manner, for example simply by means of a gear (not shown) secured to the reflector l6 and driven from a suitable motive source.
Com lementing the motional freedom of swivel joint 8 which electrically connects coa ial l nes 4 and 6, directive antenna I4 is rendered capable of searching or tracking move ents within a re atively large solid angle by means of a suit-.
able bearing system or mechanical linkage 32,
here indicated schematically. Linkage 32 couples movable member l2 to frame member 2 and functions to permit universal orientation of member l2, and of the structure carried thereby, about the swivel joints phantom center 33. By way of example, the linking structure 32 may be a gimbal ring system, or may be a parallelogram type of linkage as taught in the previously cited Slobod patent. The particular types or details or linkage or bearing system which may be employed, however, are of no immediate importance here except insofar as they provide for angular orientation about center 30.
Swivel joint 8 comprises mating ball and socket members formed or mounted upon both the inner and outer conductors of coaxial lines 4 and 6, and, in the embodiment here shown, suitably small air gaps are providedbetween theimating members to effect electrical continuity in microwave operation. Inner conductors 34 and 35 of coaxial lines 4 and 6, respectively, are held fixed relative to their respective outer conductors 50 and 4 3, as by means of polystyrene dielectric material indicated as 33. Inner conductor34 is provided with a pear-shaped protuberant element havinga spherical portion concentric to phantom center 30. A mating shell segment 42 having spherical inner and outer surfaces is secured .to inner conductor 36 of coaxial line 6, and is likewise so positioned as to be concentric to phantom center 30. Similarly, the spherical socket member 44, from which extends outer conductor 46 of coaxial line 6, mates with a spherical shel1:or hollow ball segment 48 formed upon outer conductor 50 of coaxial line 4, and these elements are likewise positioned to be concentric to phantom center 33. Thus, the mating members of swivel joint 8, having spherical surfaces, and constrained bylinkage 32 to universal movements about center 30 .to which said surfaces are concentric, remain spaced at substantially fixed gap distances from each other for all angles through which transmission line 6 may be displaced, as is necessary for satisfactory operation from a transmission line standpoint.
,It may benoted that in order to facilitate mating assembly of the ball and socket members, the inner spherical surface of outer socket member 44 is here in part provided by a removable ring member 52.
Various details of the ball and socket swivel joint, and the specificdimensioning of these details, are readily determined by "application of design theory and principles familiar to those versed in the art. For example, first order reflections resulting from mismatch maybe prevented by maintaining a reasonably constant diametric ratio between inner conductors 34 and 4B and outer conductors and 46, respectively, Within the spherical region of the joint. This ratio and resulting dimensions may be modified to compensate for the effects of the necessary capacitive coupling existent at the gaps between the "mating coaxial terminations to maintain a substantially constant characteristic impedance. Still further modifications of dimensions might be dictated to allow sufficient angular movements between the mating coaxial members, as necessary for the 'antennas nutation. One possible form of tapering is illustrated in Fig. 1 but many other forms exist, all of which may serve to pro-- vide the desired r'efiectionlesstransmission properties for the joint; and arewit'hin the scope and spirit of this invention. For example, one manner of designing the swivel joint for attaining a '4 reasonably constant diametric ratio is to make the ratio of inner diameter of stationary member Hi to diameter of spherical portion of protuberant element 40, in the plane transverse to inner conductor 34 and through phantom center 3|! (as shown in Fig. 1), so that said joints electrical impedance in said plane equals the characteristic impedance of the coaxial transmission line. Then essentially the same ratio is maintained between inner conductors 34 and 40 and outer conductors 50 and 44, respectively, within the spherical region of the swivel joint. Said ratio is also slightly modified to compensate for capacitive effectsof the spacings between mating coaxial terminals in order to maintain a substantially constantcharacteristic impedance and result in a low voltage standing wave ratio. It may also behere noted that the swivel joint may be suitably dimensioned to accommodate coaxial lines of different sizes or types, bearing in mind that the particular size of line employed is determined by the frequency of the-electromagnetic energy coupled to the antenna.
The specific embodiment of the present invention as thus far described may be regarded as in part a compromise between desired electrical characteristics and a specific mechanical requirement of minimized friction in the transmission line swivel joint. It should be apparent, then, that many modifications of the described structure are available and will occur to those skilled in the art, still falling within the sphere of the present invention. For example, the air gaps between the mating ball and socket members may be eliminated, without loss of stable electrical characteristics, by provision of a film or thin layer of insulating dielectric material between mating members with the result that a wiping contact is effected between the mating members which are then electrically separated by the layer of dielectric rather than the gaseous dielectric illustrated in the figures.
Actual metal-to-metal contact within swivel joint 8 would be unsatisfactory since minute surface irregularities on the adjacent mating surfaces behave as transformers at the frequencies contemplated for the transmitted energy, and would serve to introduce considerable noise therein. The noise thus introduced would be a function of the nutated angular displacement of the antenna about phantom center 30 since the surface irregularities would not be consistent in magnitude or location. Also, since high frequency energy travels on the surface or skin of the metal conductors, the surface irregularities at the points of contact would vary the characteristic impedance of the joint in accordance with the antenna nutation.
Along the same lines, various other modifications falling within the scope of the present invention may come to mind. For example, while Fig. 1 illustrates a presently preferred assembly, the described swivel joint may be employed in a directional antenna assembly in such manner that a conical scanning action of the directive beam may be accommodated by spinning action within the swivel joint. Thus, referring to Fig. 2 in which parts corresponding to those in Fig. I bear like designations, reflector l6 may be mounted upon movablemem'ber l2, again in such manner that .its beam direction 18 makes asuitable angle with spin axis:2l). A ringbearing .54 having its outer race 55 supported for universal movement, relative to phantom center 30, by means of the linkage 32 as shown, and having its inner race 58 secured to the reflector assembly including movable member [2, enables directive antenna l4, as a unit, to be continuously rotated about spin axis 20. In this embodiment, then. reflector I6 is carried by movable member l2 and may be rotated therewith about spin axis 20, as distinguished from the structure shown in Fig. 1 in which member 12 and the dipole radiator (not shown) fed therefrom are constrained against rotation about spin axis 20.
It is therefore apparent that while particular embodiments have been here shown and described in order to provide a better understanding of the invention, many modifications may be made without departing from the spirit thereof, and it is intended by the appended claims to cover all such modifications as fall within the true spirit and scope of the invention.
What is claimed is:
1. An antenna reflector assembly comprising: a frame member; a first coaxial line section having an inner and an outer conductor, said first coaxial line section being connectable to a source of high frequency electromagnetic energy; means securing the outer conductor of said first line section to said frame member; a second coaxial line section having an inner and an outer conductor; a swivel joint capacitively coupling said first and second line sections for passing high frequency elecetrical energy therebetween, said joint comprising two pairs of spaced spherical mating elements having a common phantom center, one pair of said mating elements being connected to the inner conductors of said first and second line sections, respectively, and the other pair of said mating elements being connected to the outer conductors of said first and second line sections, respectively; an antenna reflector for radiating said energy mechanically coupled to the outer conductor of said second line section; and linkage means coupled between said frame member and the outer conductor of said second line section to mechanically support said reflector and said second line section for nutational movement relative to said first line section about said phantom center.
2. An antenna reflector assembly comprising: a frame member; a first coaxial line section having an inner and an outer conductor, said first coaxial line section being connectable to a source of high frequency electromagnetic energy; means securing the outer conductor of said first line section to said frame member; a second coaxial line section having an inner and an outer conductor; a swivel joint capacitively coupling said first and second line sections for passing high frequency electrical energy therebetween, said joint comprising two pairs of spaced spherical mating elements having a common phantom center, one pair of said mating elements being connected to the inner conductors of said first and second line sections, respectively, and the other pair of said mating elements being connected to the outer conductors of said first and second line sections, respectively the inner conductor of said first line section having a. portion thereof extending into said swivel joint and being proportioned for a substantially characteristic impedance; an antenna reflector for radiating said energy; bearing means coupled between said reflector and the outer conductor of said second line section for rotatably mounting said reflector on said second line section; and linkage means coupled between said frame member and the outer conductor of said second line section for mechanically supporting said antenna reflector and said second line section for nutational movement relative to said first line section about said phantom center.
3. An antenna reflector assembly comprising: a frame member; a first coaxial line section having an inner and an outer conductor, said first coaxial line section being connectable to a source of high frequency electromagnetic energy; means securing the outer conductor of said first line section to said frame member; a second coaxial line section having an inner and an outer conductor; a swivel joint capacitively coupling said first and second line sections for passing high frequency electrical energy therebetween, said joint comprising two pairs of spaced spherical mating elements having a common phantom center, one pair of said mating elements being connected to the inner conductors of said first and second line sections, respectively, and the other pair of said mating elements being connected to the outer conductors of said first and second line sections, respectively the inner conductor of said first line section having a portion thereof extending into said swivel joint and being proportioned to introduce an impedance to compensate for the impedance effect of the capacitive coupling between said two pairs of spaced spherical mating elements and for a substantially characteristic impedance throughout said swivel joint; an antenna reflector mechanically coupled to the outer conductor of said second line section for radiating said energy; and means coupled between said frame member and the outer conductor of said second line section for mechanically supporting said reflector and said second line section for nutational movement relative to said first line section about said phantom center, said means including a linkage means mechanically coupled to said frame member, and bearing means coupled between said linkage means and the outer conductor of said second line section for rotatably mounting said reflector and said outer conductor.
WILFORD J. BARNETT. CLARENCE G. CARLSON.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,870,959 Morrison Aug. 9, 1932 2,411,472 Slobod Nov. 19, 1946 2,412,867 Briggs et al Dec. 17, 1946 2,451,876 Salisbury Oct. 19, 1948 2,478,913 Goldberg Aug. 16, 1949 2,479,897 Baxter et a1. Aug. 23, 1949 2,498,056 Werner Feb. 21, 1950
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US141564A US2667578A (en) | 1950-01-31 | 1950-01-31 | Swivel joint for coaxial transmission lines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US141564A US2667578A (en) | 1950-01-31 | 1950-01-31 | Swivel joint for coaxial transmission lines |
Publications (1)
Publication Number | Publication Date |
---|---|
US2667578A true US2667578A (en) | 1954-01-26 |
Family
ID=22496236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US141564A Expired - Lifetime US2667578A (en) | 1950-01-31 | 1950-01-31 | Swivel joint for coaxial transmission lines |
Country Status (1)
Country | Link |
---|---|
US (1) | US2667578A (en) |
Cited By (117)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1067906B (en) * | 1954-02-02 | 1959-10-29 | Nordwestdeutscher Rundfunk | Connecting joint |
US2956280A (en) * | 1959-02-27 | 1960-10-11 | John M O'keefe | Ball and socket antenna mounting |
DE1117182B (en) * | 1960-03-14 | 1961-11-16 | Siemens Ag Albis | Rotary coupling for coaxial high-frequency lines |
US3914715A (en) * | 1974-06-26 | 1975-10-21 | Texas Instruments Inc | Coaxial ring rotary joint |
US4020431A (en) * | 1976-01-15 | 1977-04-26 | Rockwell International Corporation | Multiaxis rotary joint for guided em waves |
EP0096449A1 (en) * | 1982-06-09 | 1983-12-21 | Philips Patentverwaltung GmbH | Device for high-voltage transmission between two parts rotatable relative to one another |
EP0103721A1 (en) * | 1982-08-26 | 1984-03-28 | Simplex Electrical Limited | Coupling device |
US4450451A (en) * | 1982-03-03 | 1984-05-22 | Raytheon Company | Gimbal assembly for monopulse radar antenna |
US5508712A (en) * | 1994-03-28 | 1996-04-16 | P-Com, Inc. | Self-aligning wave guide interface |
FR2871304A1 (en) * | 2004-06-03 | 2005-12-09 | Alstom Sa | PIVOTABLE ELECTRICAL CONNECTION DEVICE WITH SPHERICAL ROD |
US20060005621A1 (en) * | 2004-07-07 | 2006-01-12 | Fritz Lenk | Antenna system for level measurement with radar level measurement devices |
US20170018833A1 (en) * | 2015-07-14 | 2017-01-19 | At&T Intellectual Property I, Lp | Dielectric transmission medium connector and methods for use therewith |
US9674711B2 (en) | 2013-11-06 | 2017-06-06 | At&T Intellectual Property I, L.P. | Surface-wave communications and methods thereof |
US9685992B2 (en) | 2014-10-03 | 2017-06-20 | At&T Intellectual Property I, L.P. | Circuit panel network and methods thereof |
US9705610B2 (en) | 2014-10-21 | 2017-07-11 | At&T Intellectual Property I, L.P. | Transmission device with impairment compensation and methods for use therewith |
US9705561B2 (en) | 2015-04-24 | 2017-07-11 | At&T Intellectual Property I, L.P. | Directional coupling device and methods for use therewith |
US9729197B2 (en) | 2015-10-01 | 2017-08-08 | At&T Intellectual Property I, L.P. | Method and apparatus for communicating network management traffic over a network |
US9735833B2 (en) | 2015-07-31 | 2017-08-15 | At&T Intellectual Property I, L.P. | Method and apparatus for communications management in a neighborhood network |
US9742521B2 (en) | 2014-11-20 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US9749013B2 (en) | 2015-03-17 | 2017-08-29 | At&T Intellectual Property I, L.P. | Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium |
US9749053B2 (en) | 2015-07-23 | 2017-08-29 | At&T Intellectual Property I, L.P. | Node device, repeater and methods for use therewith |
US9748626B2 (en) | 2015-05-14 | 2017-08-29 | At&T Intellectual Property I, L.P. | Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium |
US9769128B2 (en) | 2015-09-28 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for encryption of communications over a network |
US9769020B2 (en) | 2014-10-21 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for responding to events affecting communications in a communication network |
US9787412B2 (en) | 2015-06-25 | 2017-10-10 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a fundamental wave mode on a transmission medium |
US9793954B2 (en) | 2015-04-28 | 2017-10-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device and methods for use therewith |
US9793955B2 (en) | 2015-04-24 | 2017-10-17 | At&T Intellectual Property I, Lp | Passive electrical coupling device and methods for use therewith |
US9800327B2 (en) | 2014-11-20 | 2017-10-24 | At&T Intellectual Property I, L.P. | Apparatus for controlling operations of a communication device and methods thereof |
US9820146B2 (en) | 2015-06-12 | 2017-11-14 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9838078B2 (en) | 2015-07-31 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9838896B1 (en) | 2016-12-09 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for assessing network coverage |
US9847850B2 (en) | 2014-10-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a mode of communication in a communication network |
US9847566B2 (en) | 2015-07-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a field of a signal to mitigate interference |
US9860075B1 (en) | 2016-08-26 | 2018-01-02 | At&T Intellectual Property I, L.P. | Method and communication node for broadband distribution |
US9865911B2 (en) | 2015-06-25 | 2018-01-09 | At&T Intellectual Property I, L.P. | Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium |
US9866309B2 (en) | 2015-06-03 | 2018-01-09 | At&T Intellectual Property I, Lp | Host node device and methods for use therewith |
US9866276B2 (en) | 2014-10-10 | 2018-01-09 | At&T Intellectual Property I, L.P. | Method and apparatus for arranging communication sessions in a communication system |
US9871283B2 (en) | 2015-07-23 | 2018-01-16 | At&T Intellectual Property I, Lp | Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration |
US9871282B2 (en) | 2015-05-14 | 2018-01-16 | At&T Intellectual Property I, L.P. | At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric |
US9871558B2 (en) | 2014-10-21 | 2018-01-16 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9876571B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9876264B2 (en) | 2015-10-02 | 2018-01-23 | At&T Intellectual Property I, Lp | Communication system, guided wave switch and methods for use therewith |
US9882257B2 (en) | 2015-07-14 | 2018-01-30 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US9887447B2 (en) | 2015-05-14 | 2018-02-06 | At&T Intellectual Property I, L.P. | Transmission medium having multiple cores and methods for use therewith |
US9893795B1 (en) | 2016-12-07 | 2018-02-13 | At&T Intellectual Property I, Lp | Method and repeater for broadband distribution |
US9904535B2 (en) | 2015-09-14 | 2018-02-27 | At&T Intellectual Property I, L.P. | Method and apparatus for distributing software |
US9906269B2 (en) | 2014-09-17 | 2018-02-27 | At&T Intellectual Property I, L.P. | Monitoring and mitigating conditions in a communication network |
US9912033B2 (en) | 2014-10-21 | 2018-03-06 | At&T Intellectual Property I, Lp | Guided wave coupler, coupling module and methods for use therewith |
US9912381B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US9911020B1 (en) | 2016-12-08 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for tracking via a radio frequency identification device |
US9913139B2 (en) | 2015-06-09 | 2018-03-06 | At&T Intellectual Property I, L.P. | Signal fingerprinting for authentication of communicating devices |
US9912027B2 (en) | 2015-07-23 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9917341B2 (en) | 2015-05-27 | 2018-03-13 | At&T Intellectual Property I, L.P. | Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves |
US9929755B2 (en) | 2015-07-14 | 2018-03-27 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US9927517B1 (en) | 2016-12-06 | 2018-03-27 | At&T Intellectual Property I, L.P. | Apparatus and methods for sensing rainfall |
US9948333B2 (en) | 2015-07-23 | 2018-04-17 | At&T Intellectual Property I, L.P. | Method and apparatus for wireless communications to mitigate interference |
US9954287B2 (en) | 2014-11-20 | 2018-04-24 | At&T Intellectual Property I, L.P. | Apparatus for converting wireless signals and electromagnetic waves and methods thereof |
US9954286B2 (en) | 2014-10-21 | 2018-04-24 | At&T Intellectual Property I, L.P. | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9967173B2 (en) | 2015-07-31 | 2018-05-08 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9973940B1 (en) | 2017-02-27 | 2018-05-15 | At&T Intellectual Property I, L.P. | Apparatus and methods for dynamic impedance matching of a guided wave launcher |
US9973416B2 (en) | 2014-10-02 | 2018-05-15 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
US9998870B1 (en) | 2016-12-08 | 2018-06-12 | At&T Intellectual Property I, L.P. | Method and apparatus for proximity sensing |
US9997819B2 (en) | 2015-06-09 | 2018-06-12 | At&T Intellectual Property I, L.P. | Transmission medium and method for facilitating propagation of electromagnetic waves via a core |
US9999038B2 (en) | 2013-05-31 | 2018-06-12 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US10009067B2 (en) | 2014-12-04 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for configuring a communication interface |
US10020844B2 (en) | 2016-12-06 | 2018-07-10 | T&T Intellectual Property I, L.P. | Method and apparatus for broadcast communication via guided waves |
US10027397B2 (en) | 2016-12-07 | 2018-07-17 | At&T Intellectual Property I, L.P. | Distributed antenna system and methods for use therewith |
US10044409B2 (en) | 2015-07-14 | 2018-08-07 | At&T Intellectual Property I, L.P. | Transmission medium and methods for use therewith |
US10051630B2 (en) | 2013-05-31 | 2018-08-14 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US10069535B2 (en) | 2016-12-08 | 2018-09-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves having a certain electric field structure |
US10069185B2 (en) | 2015-06-25 | 2018-09-04 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium |
US10090606B2 (en) | 2015-07-15 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system with dielectric array and methods for use therewith |
US10090594B2 (en) | 2016-11-23 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system having structural configurations for assembly |
US10103422B2 (en) | 2016-12-08 | 2018-10-16 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10135145B2 (en) | 2016-12-06 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave along a transmission medium |
US10139820B2 (en) | 2016-12-07 | 2018-11-27 | At&T Intellectual Property I, L.P. | Method and apparatus for deploying equipment of a communication system |
US10148016B2 (en) | 2015-07-14 | 2018-12-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array |
US10168695B2 (en) | 2016-12-07 | 2019-01-01 | At&T Intellectual Property I, L.P. | Method and apparatus for controlling an unmanned aircraft |
US10178445B2 (en) | 2016-11-23 | 2019-01-08 | At&T Intellectual Property I, L.P. | Methods, devices, and systems for load balancing between a plurality of waveguides |
US10205655B2 (en) | 2015-07-14 | 2019-02-12 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array and multiple communication paths |
US10225025B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Method and apparatus for detecting a fault in a communication system |
US10243784B2 (en) | 2014-11-20 | 2019-03-26 | At&T Intellectual Property I, L.P. | System for generating topology information and methods thereof |
US10243270B2 (en) | 2016-12-07 | 2019-03-26 | At&T Intellectual Property I, L.P. | Beam adaptive multi-feed dielectric antenna system and methods for use therewith |
US10264586B2 (en) | 2016-12-09 | 2019-04-16 | At&T Mobility Ii Llc | Cloud-based packet controller and methods for use therewith |
US10298293B2 (en) | 2017-03-13 | 2019-05-21 | At&T Intellectual Property I, L.P. | Apparatus of communication utilizing wireless network devices |
US10305190B2 (en) | 2016-12-01 | 2019-05-28 | At&T Intellectual Property I, L.P. | Reflecting dielectric antenna system and methods for use therewith |
US10312567B2 (en) | 2016-10-26 | 2019-06-04 | At&T Intellectual Property I, L.P. | Launcher with planar strip antenna and methods for use therewith |
US10326689B2 (en) | 2016-12-08 | 2019-06-18 | At&T Intellectual Property I, L.P. | Method and system for providing alternative communication paths |
US10326494B2 (en) | 2016-12-06 | 2019-06-18 | At&T Intellectual Property I, L.P. | Apparatus for measurement de-embedding and methods for use therewith |
US10340601B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Multi-antenna system and methods for use therewith |
US10340603B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Antenna system having shielded structural configurations for assembly |
US10340983B2 (en) | 2016-12-09 | 2019-07-02 | At&T Intellectual Property I, L.P. | Method and apparatus for surveying remote sites via guided wave communications |
US10355367B2 (en) | 2015-10-16 | 2019-07-16 | At&T Intellectual Property I, L.P. | Antenna structure for exchanging wireless signals |
US10361489B2 (en) | 2016-12-01 | 2019-07-23 | At&T Intellectual Property I, L.P. | Dielectric dish antenna system and methods for use therewith |
US10359749B2 (en) | 2016-12-07 | 2019-07-23 | At&T Intellectual Property I, L.P. | Method and apparatus for utilities management via guided wave communication |
US10382976B2 (en) | 2016-12-06 | 2019-08-13 | At&T Intellectual Property I, L.P. | Method and apparatus for managing wireless communications based on communication paths and network device positions |
US10389029B2 (en) | 2016-12-07 | 2019-08-20 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system with core selection and methods for use therewith |
US10389037B2 (en) | 2016-12-08 | 2019-08-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for selecting sections of an antenna array and use therewith |
US10411356B2 (en) | 2016-12-08 | 2019-09-10 | At&T Intellectual Property I, L.P. | Apparatus and methods for selectively targeting communication devices with an antenna array |
US10439675B2 (en) | 2016-12-06 | 2019-10-08 | At&T Intellectual Property I, L.P. | Method and apparatus for repeating guided wave communication signals |
US10446936B2 (en) | 2016-12-07 | 2019-10-15 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system and methods for use therewith |
US10498044B2 (en) | 2016-11-03 | 2019-12-03 | At&T Intellectual Property I, L.P. | Apparatus for configuring a surface of an antenna |
US10530505B2 (en) | 2016-12-08 | 2020-01-07 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves along a transmission medium |
US10535928B2 (en) | 2016-11-23 | 2020-01-14 | At&T Intellectual Property I, L.P. | Antenna system and methods for use therewith |
US10547348B2 (en) | 2016-12-07 | 2020-01-28 | At&T Intellectual Property I, L.P. | Method and apparatus for switching transmission mediums in a communication system |
US10601494B2 (en) | 2016-12-08 | 2020-03-24 | At&T Intellectual Property I, L.P. | Dual-band communication device and method for use therewith |
US10637149B2 (en) | 2016-12-06 | 2020-04-28 | At&T Intellectual Property I, L.P. | Injection molded dielectric antenna and methods for use therewith |
US10650940B2 (en) | 2015-05-15 | 2020-05-12 | At&T Intellectual Property I, L.P. | Transmission medium having a conductive material and methods for use therewith |
US10694379B2 (en) | 2016-12-06 | 2020-06-23 | At&T Intellectual Property I, L.P. | Waveguide system with device-based authentication and methods for use therewith |
US10727599B2 (en) | 2016-12-06 | 2020-07-28 | At&T Intellectual Property I, L.P. | Launcher with slot antenna and methods for use therewith |
US10755542B2 (en) | 2016-12-06 | 2020-08-25 | At&T Intellectual Property I, L.P. | Method and apparatus for surveillance via guided wave communication |
US10777873B2 (en) | 2016-12-08 | 2020-09-15 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10797781B2 (en) | 2015-06-03 | 2020-10-06 | At&T Intellectual Property I, L.P. | Client node device and methods for use therewith |
US10811767B2 (en) | 2016-10-21 | 2020-10-20 | At&T Intellectual Property I, L.P. | System and dielectric antenna with convex dielectric radome |
US10819035B2 (en) | 2016-12-06 | 2020-10-27 | At&T Intellectual Property I, L.P. | Launcher with helical antenna and methods for use therewith |
US10916969B2 (en) | 2016-12-08 | 2021-02-09 | At&T Intellectual Property I, L.P. | Method and apparatus for providing power using an inductive coupling |
US10938108B2 (en) | 2016-12-08 | 2021-03-02 | At&T Intellectual Property I, L.P. | Frequency selective multi-feed dielectric antenna system and methods for use therewith |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1870959A (en) * | 1925-04-13 | 1932-08-09 | Westinghouse X Ray Co Inc | X-ray apparatus |
US2411472A (en) * | 1944-05-05 | 1946-11-19 | Gen Electric | Antenna system |
US2412867A (en) * | 1943-11-10 | 1946-12-17 | Westinghouse Electric Corp | Search system for radio locators |
US2451876A (en) * | 1943-06-05 | 1948-10-19 | Winfield W Salisbury | Radio-frequency joint |
US2478913A (en) * | 1944-02-07 | 1949-08-16 | Stromberg Carlson Co | Dipole antenna |
US2479897A (en) * | 1947-04-17 | 1949-08-23 | Bell Telephone Labor Inc | Radar antenna driving mechanism |
US2498056A (en) * | 1946-12-20 | 1950-02-21 | Frank D Werner | Nutator |
-
1950
- 1950-01-31 US US141564A patent/US2667578A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1870959A (en) * | 1925-04-13 | 1932-08-09 | Westinghouse X Ray Co Inc | X-ray apparatus |
US2451876A (en) * | 1943-06-05 | 1948-10-19 | Winfield W Salisbury | Radio-frequency joint |
US2412867A (en) * | 1943-11-10 | 1946-12-17 | Westinghouse Electric Corp | Search system for radio locators |
US2478913A (en) * | 1944-02-07 | 1949-08-16 | Stromberg Carlson Co | Dipole antenna |
US2411472A (en) * | 1944-05-05 | 1946-11-19 | Gen Electric | Antenna system |
US2498056A (en) * | 1946-12-20 | 1950-02-21 | Frank D Werner | Nutator |
US2479897A (en) * | 1947-04-17 | 1949-08-23 | Bell Telephone Labor Inc | Radar antenna driving mechanism |
Cited By (135)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1067906B (en) * | 1954-02-02 | 1959-10-29 | Nordwestdeutscher Rundfunk | Connecting joint |
US2956280A (en) * | 1959-02-27 | 1960-10-11 | John M O'keefe | Ball and socket antenna mounting |
DE1117182B (en) * | 1960-03-14 | 1961-11-16 | Siemens Ag Albis | Rotary coupling for coaxial high-frequency lines |
US3914715A (en) * | 1974-06-26 | 1975-10-21 | Texas Instruments Inc | Coaxial ring rotary joint |
US4020431A (en) * | 1976-01-15 | 1977-04-26 | Rockwell International Corporation | Multiaxis rotary joint for guided em waves |
US4450451A (en) * | 1982-03-03 | 1984-05-22 | Raytheon Company | Gimbal assembly for monopulse radar antenna |
EP0096449A1 (en) * | 1982-06-09 | 1983-12-21 | Philips Patentverwaltung GmbH | Device for high-voltage transmission between two parts rotatable relative to one another |
EP0103721A1 (en) * | 1982-08-26 | 1984-03-28 | Simplex Electrical Limited | Coupling device |
US5508712A (en) * | 1994-03-28 | 1996-04-16 | P-Com, Inc. | Self-aligning wave guide interface |
WO2005124944A1 (en) * | 2004-06-03 | 2005-12-29 | Converteam Sas | Pivoting electrical connection device comprising a ball joint |
FR2871304A1 (en) * | 2004-06-03 | 2005-12-09 | Alstom Sa | PIVOTABLE ELECTRICAL CONNECTION DEVICE WITH SPHERICAL ROD |
US20060005621A1 (en) * | 2004-07-07 | 2006-01-12 | Fritz Lenk | Antenna system for level measurement with radar level measurement devices |
US7561113B2 (en) * | 2004-07-07 | 2009-07-14 | Vega Grieshaber Kg | Antenna system for level measurement with radar level measurement devices |
US10051630B2 (en) | 2013-05-31 | 2018-08-14 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9999038B2 (en) | 2013-05-31 | 2018-06-12 | At&T Intellectual Property I, L.P. | Remote distributed antenna system |
US9674711B2 (en) | 2013-11-06 | 2017-06-06 | At&T Intellectual Property I, L.P. | Surface-wave communications and methods thereof |
US9906269B2 (en) | 2014-09-17 | 2018-02-27 | At&T Intellectual Property I, L.P. | Monitoring and mitigating conditions in a communication network |
US9973416B2 (en) | 2014-10-02 | 2018-05-15 | At&T Intellectual Property I, L.P. | Method and apparatus that provides fault tolerance in a communication network |
US9685992B2 (en) | 2014-10-03 | 2017-06-20 | At&T Intellectual Property I, L.P. | Circuit panel network and methods thereof |
US9866276B2 (en) | 2014-10-10 | 2018-01-09 | At&T Intellectual Property I, L.P. | Method and apparatus for arranging communication sessions in a communication system |
US9847850B2 (en) | 2014-10-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a mode of communication in a communication network |
US9871558B2 (en) | 2014-10-21 | 2018-01-16 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9912033B2 (en) | 2014-10-21 | 2018-03-06 | At&T Intellectual Property I, Lp | Guided wave coupler, coupling module and methods for use therewith |
US9876587B2 (en) | 2014-10-21 | 2018-01-23 | At&T Intellectual Property I, L.P. | Transmission device with impairment compensation and methods for use therewith |
US9769020B2 (en) | 2014-10-21 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for responding to events affecting communications in a communication network |
US9954286B2 (en) | 2014-10-21 | 2018-04-24 | At&T Intellectual Property I, L.P. | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9960808B2 (en) | 2014-10-21 | 2018-05-01 | At&T Intellectual Property I, L.P. | Guided-wave transmission device and methods for use therewith |
US9705610B2 (en) | 2014-10-21 | 2017-07-11 | At&T Intellectual Property I, L.P. | Transmission device with impairment compensation and methods for use therewith |
US9749083B2 (en) | 2014-11-20 | 2017-08-29 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US9954287B2 (en) | 2014-11-20 | 2018-04-24 | At&T Intellectual Property I, L.P. | Apparatus for converting wireless signals and electromagnetic waves and methods thereof |
US9800327B2 (en) | 2014-11-20 | 2017-10-24 | At&T Intellectual Property I, L.P. | Apparatus for controlling operations of a communication device and methods thereof |
US9742521B2 (en) | 2014-11-20 | 2017-08-22 | At&T Intellectual Property I, L.P. | Transmission device with mode division multiplexing and methods for use therewith |
US10243784B2 (en) | 2014-11-20 | 2019-03-26 | At&T Intellectual Property I, L.P. | System for generating topology information and methods thereof |
US10009067B2 (en) | 2014-12-04 | 2018-06-26 | At&T Intellectual Property I, L.P. | Method and apparatus for configuring a communication interface |
US9876570B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9876571B2 (en) | 2015-02-20 | 2018-01-23 | At&T Intellectual Property I, Lp | Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith |
US9749013B2 (en) | 2015-03-17 | 2017-08-29 | At&T Intellectual Property I, L.P. | Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium |
US9831912B2 (en) | 2015-04-24 | 2017-11-28 | At&T Intellectual Property I, Lp | Directional coupling device and methods for use therewith |
US9705561B2 (en) | 2015-04-24 | 2017-07-11 | At&T Intellectual Property I, L.P. | Directional coupling device and methods for use therewith |
US9793955B2 (en) | 2015-04-24 | 2017-10-17 | At&T Intellectual Property I, Lp | Passive electrical coupling device and methods for use therewith |
US9793954B2 (en) | 2015-04-28 | 2017-10-17 | At&T Intellectual Property I, L.P. | Magnetic coupling device and methods for use therewith |
US9887447B2 (en) | 2015-05-14 | 2018-02-06 | At&T Intellectual Property I, L.P. | Transmission medium having multiple cores and methods for use therewith |
US9748626B2 (en) | 2015-05-14 | 2017-08-29 | At&T Intellectual Property I, L.P. | Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium |
US9871282B2 (en) | 2015-05-14 | 2018-01-16 | At&T Intellectual Property I, L.P. | At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric |
US10650940B2 (en) | 2015-05-15 | 2020-05-12 | At&T Intellectual Property I, L.P. | Transmission medium having a conductive material and methods for use therewith |
US9917341B2 (en) | 2015-05-27 | 2018-03-13 | At&T Intellectual Property I, L.P. | Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves |
US10797781B2 (en) | 2015-06-03 | 2020-10-06 | At&T Intellectual Property I, L.P. | Client node device and methods for use therewith |
US9935703B2 (en) | 2015-06-03 | 2018-04-03 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US9912382B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US9866309B2 (en) | 2015-06-03 | 2018-01-09 | At&T Intellectual Property I, Lp | Host node device and methods for use therewith |
US10050697B2 (en) | 2015-06-03 | 2018-08-14 | At&T Intellectual Property I, L.P. | Host node device and methods for use therewith |
US9912381B2 (en) | 2015-06-03 | 2018-03-06 | At&T Intellectual Property I, Lp | Network termination and methods for use therewith |
US9967002B2 (en) | 2015-06-03 | 2018-05-08 | At&T Intellectual I, Lp | Network termination and methods for use therewith |
US10812174B2 (en) | 2015-06-03 | 2020-10-20 | At&T Intellectual Property I, L.P. | Client node device and methods for use therewith |
US9997819B2 (en) | 2015-06-09 | 2018-06-12 | At&T Intellectual Property I, L.P. | Transmission medium and method for facilitating propagation of electromagnetic waves via a core |
US9913139B2 (en) | 2015-06-09 | 2018-03-06 | At&T Intellectual Property I, L.P. | Signal fingerprinting for authentication of communicating devices |
US9820146B2 (en) | 2015-06-12 | 2017-11-14 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US10069185B2 (en) | 2015-06-25 | 2018-09-04 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium |
US9865911B2 (en) | 2015-06-25 | 2018-01-09 | At&T Intellectual Property I, L.P. | Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium |
US9787412B2 (en) | 2015-06-25 | 2017-10-10 | At&T Intellectual Property I, L.P. | Methods and apparatus for inducing a fundamental wave mode on a transmission medium |
US9947982B2 (en) * | 2015-07-14 | 2018-04-17 | At&T Intellectual Property I, Lp | Dielectric transmission medium connector and methods for use therewith |
US10673115B2 (en) * | 2015-07-14 | 2020-06-02 | At&T Intellectual Property I, L.P. | Dielectric transmission medium connector and methods for use therewith |
US10205655B2 (en) | 2015-07-14 | 2019-02-12 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array and multiple communication paths |
US9929755B2 (en) | 2015-07-14 | 2018-03-27 | At&T Intellectual Property I, L.P. | Method and apparatus for coupling an antenna to a device |
US20170018833A1 (en) * | 2015-07-14 | 2017-01-19 | At&T Intellectual Property I, Lp | Dielectric transmission medium connector and methods for use therewith |
US10148016B2 (en) | 2015-07-14 | 2018-12-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for communicating utilizing an antenna array |
US20170018831A1 (en) * | 2015-07-14 | 2017-01-19 | At&T Intellectual Property I, Lp | Dielectric transmission medium connector and methods for use therewith |
US9882257B2 (en) | 2015-07-14 | 2018-01-30 | At&T Intellectual Property I, L.P. | Method and apparatus for launching a wave mode that mitigates interference |
US10044409B2 (en) | 2015-07-14 | 2018-08-07 | At&T Intellectual Property I, L.P. | Transmission medium and methods for use therewith |
US20180205129A1 (en) * | 2015-07-14 | 2018-07-19 | At&T Intellectual Property I, L.P. | Dielectric transmission medium connector and methods for use therewith |
US9847566B2 (en) | 2015-07-14 | 2017-12-19 | At&T Intellectual Property I, L.P. | Method and apparatus for adjusting a field of a signal to mitigate interference |
US9853342B2 (en) * | 2015-07-14 | 2017-12-26 | At&T Intellectual Property I, L.P. | Dielectric transmission medium connector and methods for use therewith |
US10090606B2 (en) | 2015-07-15 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system with dielectric array and methods for use therewith |
US9912027B2 (en) | 2015-07-23 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9871283B2 (en) | 2015-07-23 | 2018-01-16 | At&T Intellectual Property I, Lp | Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration |
US9948333B2 (en) | 2015-07-23 | 2018-04-17 | At&T Intellectual Property I, L.P. | Method and apparatus for wireless communications to mitigate interference |
US9749053B2 (en) | 2015-07-23 | 2017-08-29 | At&T Intellectual Property I, L.P. | Node device, repeater and methods for use therewith |
US9806818B2 (en) | 2015-07-23 | 2017-10-31 | At&T Intellectual Property I, Lp | Node device, repeater and methods for use therewith |
US9735833B2 (en) | 2015-07-31 | 2017-08-15 | At&T Intellectual Property I, L.P. | Method and apparatus for communications management in a neighborhood network |
US9967173B2 (en) | 2015-07-31 | 2018-05-08 | At&T Intellectual Property I, L.P. | Method and apparatus for authentication and identity management of communicating devices |
US9838078B2 (en) | 2015-07-31 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for exchanging communication signals |
US9904535B2 (en) | 2015-09-14 | 2018-02-27 | At&T Intellectual Property I, L.P. | Method and apparatus for distributing software |
US9769128B2 (en) | 2015-09-28 | 2017-09-19 | At&T Intellectual Property I, L.P. | Method and apparatus for encryption of communications over a network |
US9729197B2 (en) | 2015-10-01 | 2017-08-08 | At&T Intellectual Property I, L.P. | Method and apparatus for communicating network management traffic over a network |
US9876264B2 (en) | 2015-10-02 | 2018-01-23 | At&T Intellectual Property I, Lp | Communication system, guided wave switch and methods for use therewith |
US10355367B2 (en) | 2015-10-16 | 2019-07-16 | At&T Intellectual Property I, L.P. | Antenna structure for exchanging wireless signals |
US9860075B1 (en) | 2016-08-26 | 2018-01-02 | At&T Intellectual Property I, L.P. | Method and communication node for broadband distribution |
US10811767B2 (en) | 2016-10-21 | 2020-10-20 | At&T Intellectual Property I, L.P. | System and dielectric antenna with convex dielectric radome |
US10312567B2 (en) | 2016-10-26 | 2019-06-04 | At&T Intellectual Property I, L.P. | Launcher with planar strip antenna and methods for use therewith |
US10498044B2 (en) | 2016-11-03 | 2019-12-03 | At&T Intellectual Property I, L.P. | Apparatus for configuring a surface of an antenna |
US10225025B2 (en) | 2016-11-03 | 2019-03-05 | At&T Intellectual Property I, L.P. | Method and apparatus for detecting a fault in a communication system |
US10178445B2 (en) | 2016-11-23 | 2019-01-08 | At&T Intellectual Property I, L.P. | Methods, devices, and systems for load balancing between a plurality of waveguides |
US10340601B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Multi-antenna system and methods for use therewith |
US10340603B2 (en) | 2016-11-23 | 2019-07-02 | At&T Intellectual Property I, L.P. | Antenna system having shielded structural configurations for assembly |
US10090594B2 (en) | 2016-11-23 | 2018-10-02 | At&T Intellectual Property I, L.P. | Antenna system having structural configurations for assembly |
US10535928B2 (en) | 2016-11-23 | 2020-01-14 | At&T Intellectual Property I, L.P. | Antenna system and methods for use therewith |
US10305190B2 (en) | 2016-12-01 | 2019-05-28 | At&T Intellectual Property I, L.P. | Reflecting dielectric antenna system and methods for use therewith |
US10361489B2 (en) | 2016-12-01 | 2019-07-23 | At&T Intellectual Property I, L.P. | Dielectric dish antenna system and methods for use therewith |
US10020844B2 (en) | 2016-12-06 | 2018-07-10 | T&T Intellectual Property I, L.P. | Method and apparatus for broadcast communication via guided waves |
US10382976B2 (en) | 2016-12-06 | 2019-08-13 | At&T Intellectual Property I, L.P. | Method and apparatus for managing wireless communications based on communication paths and network device positions |
US10819035B2 (en) | 2016-12-06 | 2020-10-27 | At&T Intellectual Property I, L.P. | Launcher with helical antenna and methods for use therewith |
US9927517B1 (en) | 2016-12-06 | 2018-03-27 | At&T Intellectual Property I, L.P. | Apparatus and methods for sensing rainfall |
US10755542B2 (en) | 2016-12-06 | 2020-08-25 | At&T Intellectual Property I, L.P. | Method and apparatus for surveillance via guided wave communication |
US10727599B2 (en) | 2016-12-06 | 2020-07-28 | At&T Intellectual Property I, L.P. | Launcher with slot antenna and methods for use therewith |
US10326494B2 (en) | 2016-12-06 | 2019-06-18 | At&T Intellectual Property I, L.P. | Apparatus for measurement de-embedding and methods for use therewith |
US10694379B2 (en) | 2016-12-06 | 2020-06-23 | At&T Intellectual Property I, L.P. | Waveguide system with device-based authentication and methods for use therewith |
US10135145B2 (en) | 2016-12-06 | 2018-11-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for generating an electromagnetic wave along a transmission medium |
US10637149B2 (en) | 2016-12-06 | 2020-04-28 | At&T Intellectual Property I, L.P. | Injection molded dielectric antenna and methods for use therewith |
US10439675B2 (en) | 2016-12-06 | 2019-10-08 | At&T Intellectual Property I, L.P. | Method and apparatus for repeating guided wave communication signals |
US10027397B2 (en) | 2016-12-07 | 2018-07-17 | At&T Intellectual Property I, L.P. | Distributed antenna system and methods for use therewith |
US10547348B2 (en) | 2016-12-07 | 2020-01-28 | At&T Intellectual Property I, L.P. | Method and apparatus for switching transmission mediums in a communication system |
US10243270B2 (en) | 2016-12-07 | 2019-03-26 | At&T Intellectual Property I, L.P. | Beam adaptive multi-feed dielectric antenna system and methods for use therewith |
US10389029B2 (en) | 2016-12-07 | 2019-08-20 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system with core selection and methods for use therewith |
US9893795B1 (en) | 2016-12-07 | 2018-02-13 | At&T Intellectual Property I, Lp | Method and repeater for broadband distribution |
US10359749B2 (en) | 2016-12-07 | 2019-07-23 | At&T Intellectual Property I, L.P. | Method and apparatus for utilities management via guided wave communication |
US10168695B2 (en) | 2016-12-07 | 2019-01-01 | At&T Intellectual Property I, L.P. | Method and apparatus for controlling an unmanned aircraft |
US10446936B2 (en) | 2016-12-07 | 2019-10-15 | At&T Intellectual Property I, L.P. | Multi-feed dielectric antenna system and methods for use therewith |
US10139820B2 (en) | 2016-12-07 | 2018-11-27 | At&T Intellectual Property I, L.P. | Method and apparatus for deploying equipment of a communication system |
US10777873B2 (en) | 2016-12-08 | 2020-09-15 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10103422B2 (en) | 2016-12-08 | 2018-10-16 | At&T Intellectual Property I, L.P. | Method and apparatus for mounting network devices |
US10530505B2 (en) | 2016-12-08 | 2020-01-07 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves along a transmission medium |
US10601494B2 (en) | 2016-12-08 | 2020-03-24 | At&T Intellectual Property I, L.P. | Dual-band communication device and method for use therewith |
US10938108B2 (en) | 2016-12-08 | 2021-03-02 | At&T Intellectual Property I, L.P. | Frequency selective multi-feed dielectric antenna system and methods for use therewith |
US9998870B1 (en) | 2016-12-08 | 2018-06-12 | At&T Intellectual Property I, L.P. | Method and apparatus for proximity sensing |
US10916969B2 (en) | 2016-12-08 | 2021-02-09 | At&T Intellectual Property I, L.P. | Method and apparatus for providing power using an inductive coupling |
US9911020B1 (en) | 2016-12-08 | 2018-03-06 | At&T Intellectual Property I, L.P. | Method and apparatus for tracking via a radio frequency identification device |
US10326689B2 (en) | 2016-12-08 | 2019-06-18 | At&T Intellectual Property I, L.P. | Method and system for providing alternative communication paths |
US10069535B2 (en) | 2016-12-08 | 2018-09-04 | At&T Intellectual Property I, L.P. | Apparatus and methods for launching electromagnetic waves having a certain electric field structure |
US10411356B2 (en) | 2016-12-08 | 2019-09-10 | At&T Intellectual Property I, L.P. | Apparatus and methods for selectively targeting communication devices with an antenna array |
US10389037B2 (en) | 2016-12-08 | 2019-08-20 | At&T Intellectual Property I, L.P. | Apparatus and methods for selecting sections of an antenna array and use therewith |
US9838896B1 (en) | 2016-12-09 | 2017-12-05 | At&T Intellectual Property I, L.P. | Method and apparatus for assessing network coverage |
US10264586B2 (en) | 2016-12-09 | 2019-04-16 | At&T Mobility Ii Llc | Cloud-based packet controller and methods for use therewith |
US10340983B2 (en) | 2016-12-09 | 2019-07-02 | At&T Intellectual Property I, L.P. | Method and apparatus for surveying remote sites via guided wave communications |
US9973940B1 (en) | 2017-02-27 | 2018-05-15 | At&T Intellectual Property I, L.P. | Apparatus and methods for dynamic impedance matching of a guided wave launcher |
US10298293B2 (en) | 2017-03-13 | 2019-05-21 | At&T Intellectual Property I, L.P. | Apparatus of communication utilizing wireless network devices |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2667578A (en) | Swivel joint for coaxial transmission lines | |
US4020431A (en) | Multiaxis rotary joint for guided em waves | |
Kilgus | Multielement, fractional turn helices | |
US4494117A (en) | Dual sense, circularly polarized helical antenna | |
US2235506A (en) | Ultra short wave radio system | |
US2380333A (en) | High frequency antenna | |
US2773254A (en) | Phase shifter | |
US3543271A (en) | Luneberg antenna system for spin stabilized vehicles | |
US5621420A (en) | Duplex monopole antenna | |
US3680147A (en) | Colinear antenna apparatus | |
US2095083A (en) | Directional antenna system | |
US4511868A (en) | Apparatus and method for transfer of r.f. energy through a mechanically rotatable joint | |
US3605099A (en) | Phased slot antenna array with frustoconical reflector | |
US2602895A (en) | Ultrahigh-frequency antenna apparatus | |
US2785396A (en) | Large circumference loop antennas | |
US5283590A (en) | Antenna beam shaping by means of physical rotation of circularly polarized radiators | |
US7042409B2 (en) | Method and apparatus for mounting a rotating reflector antenna to minimize swept arc | |
US7102590B2 (en) | Portable telescoping line-of-sight array antenna | |
US4408209A (en) | Orientable beam antenna for telecommunications satellite | |
US2520945A (en) | Wave transmission apparatus | |
US2594839A (en) | Electrical apparatus | |
US3587106A (en) | Broad band antennas having spiral windings | |
US2823381A (en) | Antenna | |
US2700137A (en) | Rotating joint | |
US2485920A (en) | Antenna |