GB1182724A - Combined Radar Antenna System - Google Patents
Combined Radar Antenna SystemInfo
- Publication number
- GB1182724A GB1182724A GB02725/68A GB1272568A GB1182724A GB 1182724 A GB1182724 A GB 1182724A GB 02725/68 A GB02725/68 A GB 02725/68A GB 1272568 A GB1272568 A GB 1272568A GB 1182724 A GB1182724 A GB 1182724A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reflector
- aerial
- radiation
- supported
- axis
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/02—Antennas or antenna systems providing at least two radiating patterns providing sum and difference patterns
Landscapes
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Sealing Material Composition (AREA)
Abstract
1,182,724. Aerials. HOLLANDSE SIGNAALAPPARATEN N.V. 15 March, 1968 [22 March, 1967], No. 12725/68. Heading H4A. An aerial system comprises a reflector 1, Fig. 1, of paraboloidal shape and having different dimensions of width and height. A first aerial is provided by means of a feed horn 2, arranged at the focus of the paraboloid, which is supported by rods 3, 4 extending from the reflector 1. A second aerial is provided by means of a plurality of radiating elements 7, which are supported by the reflector 1 and whose projections upon a plane perpendicular to the axis of the said reflector are equi-spaced. The elements 7 are connected by transmission lines on the rear side of the reflector 1 so that a plane wave front of uniform phase is obtained. An element 7 may be a sheet aluminium half-wave vertical unipole 8, Fig. 3, having a matching stub extending below a metal pin 9, by means of which it is supported by the reflector 1 and is connected to the central conductor of a tri-plate strip line 14. A tubular insulating piece 10 receives the pin 9, and fits in a distance piece 11 which is clamped to the reflector 1. The tri-plate strip line is formed on the surfaces of two insulating plates (17), (18), Figs. 4A, 4B (not shown) and is bolted to the back of the distance piece 11. An arrangement is described in which the radiating elements of the second aerial are connected together to form two groups, one to the right of the feed horn of the first aerial, and the other to the left thereof. The two groups are respectively connected to first and second input ports of a hybrid ring which provides from its sum output pert a single radiation lobe with a maximum along the axis of the reflector, and which provides from its difference output port two radiation lobes having a mutual minimum along the said axis (Figs. 5A, 5B, 6, not shown). With the arrangement of Fig. 1, radiation from the first aerial is horizontally polarized, and that from the second aerial is vertically polarised. Another kind of radiating element may be used in the second aerial, for example, slots or dielectric rods, and radiation therefrom may be circularly polarized. The two aerials may be operated at different frequencies.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6704219A NL6704219A (en) | 1967-03-22 | 1967-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1182724A true GB1182724A (en) | 1970-03-04 |
Family
ID=19799640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB02725/68A Expired GB1182724A (en) | 1967-03-22 | 1968-03-15 | Combined Radar Antenna System |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3550135A (en) |
| BE (1) | BE712495A (en) |
| CH (1) | CH473488A (en) |
| DE (1) | DE1766002B1 (en) |
| FR (1) | FR1556858A (en) |
| GB (1) | GB1182724A (en) |
| NL (1) | NL6704219A (en) |
| NO (1) | NO127476B (en) |
| SE (1) | SE323725B (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3680143A (en) * | 1970-07-01 | 1972-07-25 | Hughes Aircraft Co | Shaped beam antenna |
| FR2177564B1 (en) * | 1972-03-29 | 1974-08-02 | Nathan Guy | |
| US4097868A (en) * | 1976-12-06 | 1978-06-27 | The United States Of America As Represented By The Secretary Of The Army | Antenna for combined surveillance and foliage penetration radar |
| US4095230A (en) * | 1977-06-06 | 1978-06-13 | General Dynamics Corporation | High accuracy broadband antenna system |
| FR2474770A2 (en) * | 1978-12-27 | 1981-07-31 | Thomson Csf | Common antenna for primary and secondary radar - uses totally integrated radiating waveguides generating linearly, circularly or elliptically polarised waves |
| FR2445629A1 (en) * | 1978-12-27 | 1980-07-25 | Thomson Csf | COMMON ANTENNA FOR PRIMARY RADAR AND SECONDARY RADAR |
| IT1166889B (en) * | 1979-06-14 | 1987-05-06 | Contraves Italiana Spa | ARRANGEMENT OF INTEGRATED ANTENNAS FOR RADAR EQUIPMENT THAT ALLOWS THE CONTEMPORARY GENERATION OF TWO OR MORE IRRADIATION DIAGRAMS, ONE DIFFERENT FROM THE OTHER |
| DE3170227D1 (en) * | 1980-01-28 | 1985-06-05 | Thomson Csf | Common antenna for primary radar and secondary radar |
| DE9014875U1 (en) * | 1990-10-27 | 1991-01-10 | Kabelmetal Electro Gmbh, 30179 Hannover | Antenna with a parabolic reflector |
| US5187491A (en) * | 1991-01-29 | 1993-02-16 | Raytheon Company | Low sidelobes antenna |
| FR2691581B1 (en) * | 1992-05-19 | 1994-08-26 | Thomson Csf | Low cost and space-saving microwave antenna for vehicle transmitter and / or receiver system. |
| US5835057A (en) * | 1996-01-26 | 1998-11-10 | Kvh Industries, Inc. | Mobile satellite communication system including a dual-frequency, low-profile, self-steering antenna assembly |
| DE19859120C1 (en) * | 1998-12-21 | 2000-03-23 | Howaldtswerke Deutsche Werft | Aerial assembly for satellite communication installations on ships and submarines uses small, level planar aerials as satellite aerials fitted on the rear side with a radar aerial. |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2653238A (en) * | 1945-10-26 | 1953-09-22 | Kenneth T Bainbridge | Dual frequency antenna |
| US2895127A (en) * | 1954-07-20 | 1959-07-14 | Rca Corp | Directive diplex antenna |
| US2846678A (en) * | 1955-06-09 | 1958-08-05 | Sanders Associates Inc | Dual frequency antenna |
| US3164835A (en) * | 1962-06-07 | 1965-01-05 | Bell Telephone Labor Inc | Alignment of microwave antenna |
| US3245081A (en) * | 1963-02-08 | 1966-04-05 | Hughes Aircraft Co | Multiple feed wide angle antenna utilizing biconcave spherical delay lens |
| US3276022A (en) * | 1964-05-13 | 1966-09-27 | Aeronca Mfg Corp | Dual frequency gregorian-newtonian antenna system with newtonian feed located at common focus of parabolic main dish and ellipsoidal sub-dish |
| US3445850A (en) * | 1965-11-08 | 1969-05-20 | Canoga Electronics Corp | Dual frequency antenna employing parabolic reflector |
-
1967
- 1967-03-22 NL NL6704219A patent/NL6704219A/xx unknown
-
1968
- 1968-03-15 GB GB02725/68A patent/GB1182724A/en not_active Expired
- 1968-03-18 CH CH395668A patent/CH473488A/en not_active IP Right Cessation
- 1968-03-20 DE DE19681766002 patent/DE1766002B1/en active Pending
- 1968-03-20 NO NO01083/68A patent/NO127476B/no unknown
- 1968-03-20 SE SE3692/68A patent/SE323725B/xx unknown
- 1968-03-20 BE BE712495D patent/BE712495A/xx not_active IP Right Cessation
- 1968-03-21 US US714973A patent/US3550135A/en not_active Expired - Lifetime
- 1968-03-21 FR FR1556858D patent/FR1556858A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NO127476B (en) | 1973-06-25 |
| NL6704219A (en) | 1968-09-23 |
| SE323725B (en) | 1970-05-11 |
| DE1766002B1 (en) | 1971-03-04 |
| BE712495A (en) | 1968-07-31 |
| CH473488A (en) | 1969-05-31 |
| FR1556858A (en) | 1969-02-07 |
| US3550135A (en) | 1970-12-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PE20 | Patent expired after termination of 20 years |