NL6408602A - - Google Patents
Info
- Publication number
- NL6408602A NL6408602A NL6408602A NL6408602A NL6408602A NL 6408602 A NL6408602 A NL 6408602A NL 6408602 A NL6408602 A NL 6408602A NL 6408602 A NL6408602 A NL 6408602A NL 6408602 A NL6408602 A NL 6408602A
- Authority
- NL
- Netherlands
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
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- 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
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- 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)
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 |
---|---|
NL6408602A true NL6408602A (xx) | 1965-02-01 |
Family
ID=10299076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL6408602A NL6408602A (xx) | 1963-07-29 | 1964-07-28 |
Country Status (5)
Country | Link |
---|---|
US (1) | US3325816A (xx) |
ES (1) | ES302516A1 (xx) |
GB (1) | GB1056352A (xx) |
NL (1) | NL6408602A (xx) |
SE (1) | SE334927B (xx) |
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 (xx) * | 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 (de) * | 1969-11-14 | 1974-03-07 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Sekundärradar-Abfrage-Antwort-System mit Zusatzantenne zur Nebenkeulenabfrageunterdrückung |
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 (fr) * | 1977-09-16 | 1986-10-17 | Thomson Csf | Dispositif d'interrogation par radar, notamment pour radar secondaire aeroporte, et radar comportant un tel dispositif |
FR2456329A1 (fr) * | 1979-05-08 | 1980-12-05 | Thomson Csf | Dispositif de transmission des signaux radiophoniques dans un equipement de radar secondaire |
US4348679A (en) * | 1980-10-06 | 1982-09-07 | United Technologies Corporation | Multi-mode dual-feed array radar antenna |
US4376940A (en) * | 1980-10-29 | 1983-03-15 | Bell Telephone Laboratories, Incorporated | Antenna arrangements for suppressing selected sidelobes |
US4364052A (en) * | 1980-10-29 | 1982-12-14 | 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 (ja) * | 2008-10-20 | 2013-02-20 | 古野電気株式会社 | アンテナ装置 |
JP5731745B2 (ja) * | 2009-10-30 | 2015-06-10 | 古野電気株式会社 | アンテナ装置およびレーダ装置 |
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 (fr) * | 1959-04-10 | 1960-09-27 | Csf | Antennes superdirectives |
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/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1056352A (en) | 1967-01-25 |
SE334927B (xx) | 1971-05-10 |
ES302516A1 (es) | 1965-01-16 |
US3325816A (en) | 1967-06-13 |