ES302516A1 - Sidelobe suppressing antenna system comprising directional coupler and phase controlmeans for beam shaping - Google Patents
Sidelobe suppressing antenna system comprising directional coupler and phase controlmeans for beam shapingInfo
- Publication number
- ES302516A1 ES302516A1 ES0302516A ES302516A ES302516A1 ES 302516 A1 ES302516 A1 ES 302516A1 ES 0302516 A ES0302516 A ES 0302516A ES 302516 A ES302516 A ES 302516A ES 302516 A1 ES302516 A1 ES 302516A1
- Authority
- ES
- Spain
- Prior art keywords
- phase
- directional coupler
- controlmeans
- antenna system
- beam shaping
- 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
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/002—Antennas or antenna systems providing at least two radiating patterns providing at least two patterns of different beamwidth; Variable beamwidth antennas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
- G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
- G01S13/762—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with special measures concerning the radiation pattern, e.g. S.L.S.
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
In an aerial system similar to that disclosed in the parent Specification a 180 degree phase shifter PS, Fig. 3, may be brought into circuit between the directional coupler K and the elements H by opening a bridging switch SW, whereby when the system is supplied at T2 the elements H radiate in phase with the element He, producing a resultant pattern as shown at P, Fig. 2. When the system is supplied at T1, with the switch SW open, the element He radiates in phase opposition with the elements H, causing a minor degradation of the highly directional pattern L (with side lobes S). When the switch SW is closed, the system is equivalent to the parent system and the same radiation patterns are produced (Fig. 1, not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB29903/63A GB1056352A (en) | 1963-07-29 | 1963-07-29 | Improvements in or relating to aerial systems |
Publications (1)
Publication Number | Publication Date |
---|---|
ES302516A1 true ES302516A1 (en) | 1965-01-16 |
Family
ID=10299076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0302516A Expired ES302516A1 (en) | 1963-07-29 | 1964-07-29 | Sidelobe suppressing antenna system comprising directional coupler and phase controlmeans for beam shaping |
Country Status (5)
Country | Link |
---|---|
US (1) | US3325816A (en) |
ES (1) | ES302516A1 (en) |
GB (1) | GB1056352A (en) |
NL (1) | NL6408602A (en) |
SE (1) | SE334927B (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3525995A (en) * | 1967-03-14 | 1970-08-25 | Collins Radio Co | Amplitude tapering,nonsymmetrical binary feed networks for highpower hf phased arrays |
FR1564646A (en) * | 1968-02-09 | 1969-04-25 | ||
US3503069A (en) * | 1968-02-27 | 1970-03-24 | Bell Telephone Labor Inc | System for nulling array sensitivity patterns |
DE1957303C3 (en) * | 1969-11-14 | 1974-03-07 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Secondary radar interrogation-response system with additional antenna to suppress sidelobe interrogation |
US4063250A (en) * | 1975-12-16 | 1977-12-13 | Electrospace Systems, Inc. | Beam and null switch step steerable antenna system |
US4145658A (en) * | 1977-06-03 | 1979-03-20 | Bell Telephone Laboratories, Incorporated | Method and apparatus for cancelling interference between area coverage and spot coverage antenna beams |
FR2568018B1 (en) * | 1977-09-16 | 1986-10-17 | Thomson Csf | RADAR QUERY DEVICE, PARTICULARLY FOR AIRPORT SECONDARY RADAR, AND RADAR COMPRISING SUCH A DEVICE |
FR2456329A1 (en) * | 1979-05-08 | 1980-12-05 | Thomson Csf | DEVICE FOR TRANSMITTING RADIOPHONIC SIGNALS IN SECONDARY RADAR EQUIPMENT |
US4348679A (en) * | 1980-10-06 | 1982-09-07 | United Technologies Corporation | Multi-mode dual-feed array radar antenna |
US4364052A (en) * | 1980-10-29 | 1982-12-14 | Bell Telephone Laboratories, Incorporated | Antenna arrangements for suppressing selected sidelobes |
US4376940A (en) * | 1980-10-29 | 1983-03-15 | Bell Telephone Laboratories, Incorporated | Antenna arrangements for suppressing selected sidelobes |
US4516130A (en) * | 1982-03-09 | 1985-05-07 | At&T Bell Laboratories | Antenna arrangements using focal plane filtering for reducing sidelobes |
GB9513936D0 (en) | 1995-07-07 | 1996-04-24 | Gec Marconi Avionics Holdings | Radar apparatus |
US5754140A (en) * | 1996-07-05 | 1998-05-19 | Sperry Marine Inc. | Beam sharpened, low sidelobe antenna system |
US5905473A (en) * | 1997-03-31 | 1999-05-18 | Resound Corporation | Adjustable array antenna |
US20080068266A1 (en) * | 2005-11-23 | 2008-03-20 | Northrop Grumman Corporation | Beamforming for spatial sidelobe cancellation and AMR direction finding |
JP5147637B2 (en) * | 2008-10-20 | 2013-02-20 | 古野電気株式会社 | Antenna device |
JP5731745B2 (en) * | 2009-10-30 | 2015-06-10 | 古野電気株式会社 | Antenna device and radar device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2419562A (en) * | 1942-03-10 | 1947-04-29 | Standard Telephones Cables Ltd | Antenna array |
FR1231221A (en) * | 1959-04-10 | 1960-09-27 | Csf | Superdirective antennas |
US3222677A (en) * | 1960-01-04 | 1965-12-07 | Litton Systems Inc | Lobe switching directional antenna with directional couplers for feeding and phasing signal energy |
US3093826A (en) * | 1960-04-08 | 1963-06-11 | Litton Systems Inc | Antenna system |
US3255450A (en) * | 1960-06-15 | 1966-06-07 | Sanders Associates Inc | Multiple beam antenna system employing multiple directional couplers in the leadin |
-
1963
- 1963-07-29 GB GB29903/63A patent/GB1056352A/en not_active Expired
-
1964
- 1964-07-07 SE SE08278/64A patent/SE334927B/xx unknown
- 1964-07-24 US US384969A patent/US3325816A/en not_active Expired - Lifetime
- 1964-07-28 NL NL6408602A patent/NL6408602A/xx unknown
- 1964-07-29 ES ES0302516A patent/ES302516A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1056352A (en) | 1967-01-25 |
SE334927B (en) | 1971-05-10 |
NL6408602A (en) | 1965-02-01 |
US3325816A (en) | 1967-06-13 |
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