FR2304192A1 - Antenne a reduction selective de gain - Google Patents
Antenne a reduction selective de gainInfo
- Publication number
- FR2304192A1 FR2304192A1 FR7508072A FR7508072A FR2304192A1 FR 2304192 A1 FR2304192 A1 FR 2304192A1 FR 7508072 A FR7508072 A FR 7508072A FR 7508072 A FR7508072 A FR 7508072A FR 2304192 A1 FR2304192 A1 FR 2304192A1
- Authority
- FR
- France
- Prior art keywords
- gain reduction
- selective gain
- reduction antenna
- antenna
- selective
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
- H01Q19/19—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7508072A FR2304192A1 (fr) | 1975-03-14 | 1975-03-14 | Antenne a reduction selective de gain |
CH279776A CH600605A5 (fr) | 1975-03-14 | 1976-03-05 | |
US05/665,445 US4096483A (en) | 1975-03-14 | 1976-03-09 | Reflector with frequency selective ring of absorptive material for aperture control |
GB9864/76A GB1513521A (en) | 1975-03-14 | 1976-03-11 | Selective gain reduction antenna |
NLAANVRAGE7602556,A NL177367C (nl) | 1975-03-14 | 1976-03-11 | Antenne voorzien van een frequentie-selectief absorptiemiddel. |
DE2610506A DE2610506C2 (de) | 1975-03-14 | 1976-03-12 | Reflektor- bzw. Linsenantenne |
LU74538A LU74538A1 (fr) | 1975-03-14 | 1976-03-12 | |
IT48545/76A IT1057979B (it) | 1975-03-14 | 1976-03-12 | Antenni a riduzione selettiva di guardagno |
BE165087A BE839482A (fr) | 1975-03-14 | 1976-03-12 | Antenne a reduction selective de gain |
JP51028025A JPS6035844B2 (ja) | 1975-03-14 | 1976-03-15 | アンテナ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7508072A FR2304192A1 (fr) | 1975-03-14 | 1975-03-14 | Antenne a reduction selective de gain |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2304192A1 true FR2304192A1 (fr) | 1976-10-08 |
FR2304192B1 FR2304192B1 (fr) | 1982-04-30 |
Family
ID=9152607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7508072A Granted FR2304192A1 (fr) | 1975-03-14 | 1975-03-14 | Antenne a reduction selective de gain |
Country Status (10)
Country | Link |
---|---|
US (1) | US4096483A (fr) |
JP (1) | JPS6035844B2 (fr) |
BE (1) | BE839482A (fr) |
CH (1) | CH600605A5 (fr) |
DE (1) | DE2610506C2 (fr) |
FR (1) | FR2304192A1 (fr) |
GB (1) | GB1513521A (fr) |
IT (1) | IT1057979B (fr) |
LU (1) | LU74538A1 (fr) |
NL (1) | NL177367C (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2568062A1 (fr) * | 1984-07-17 | 1986-01-24 | Thomson Alcatel Espace | Antenne bifrequence a meme couverture de zone a polarisation croisee pour satellites de telecommunications |
EP0203709A1 (fr) * | 1985-04-26 | 1986-12-03 | BRITISH TELECOMMUNICATIONS public limited company | Atténuation de signaux micro-ondes |
EP0284897A1 (fr) * | 1987-03-19 | 1988-10-05 | Siemens Aktiengesellschaft | Antenne directive micro-ondes à deux réflecteurs |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2385233A1 (fr) * | 1977-03-25 | 1978-10-20 | Thomson Csf | Structure d'antenne a reflecteurs et notamment a reflecteurs excentres, et equipements de detection electromagnetique et de telecommunications spatiales comportant une telle structure |
US4626863A (en) * | 1983-09-12 | 1986-12-02 | Andrew Corporation | Low side lobe Gregorian antenna |
DE3402659A1 (de) * | 1984-01-26 | 1985-08-01 | Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn | Reflektorantenne fuer den betrieb in mehreren frequenzbereichen |
US5003321A (en) * | 1985-09-09 | 1991-03-26 | Sts Enterprises, Inc. | Dual frequency feed |
US4901086A (en) * | 1987-10-02 | 1990-02-13 | Raytheon Company | Lens/polarizer radome |
US4866457A (en) * | 1988-11-08 | 1989-09-12 | The United States Of America As Represented By The Secretary Of Commerce | Covered inverted offset cassegrainian system |
DE19630784C1 (de) * | 1996-07-31 | 1998-01-02 | Daimler Benz Aerospace Ag | Reflektorantenne |
US6211834B1 (en) | 1998-09-30 | 2001-04-03 | Harris Corporation | Multiband ring focus antenna employing shaped-geometry main reflector and diverse-geometry shaped subreflector-feeds |
US6169524B1 (en) * | 1999-01-15 | 2001-01-02 | Trw Inc. | Multi-pattern antenna having frequency selective or polarization sensitive zones |
US6285332B1 (en) * | 1999-09-10 | 2001-09-04 | Trw Inc. | Frequency selective reflector |
EP1137102A3 (fr) * | 2000-03-20 | 2004-01-07 | The Boeing Company | Ouverture de réflecteur à fréquence variable |
US6608607B2 (en) | 2001-11-27 | 2003-08-19 | Northrop Grumman Corporation | High performance multi-band frequency selective reflector with equal beam coverage |
US6803883B2 (en) * | 2003-02-13 | 2004-10-12 | Spectrasite Communications, Inc. | Radio frequency electromagnetic emissions shield |
ES2847799T3 (es) * | 2007-05-14 | 2021-08-03 | Saab Ab | Dispositivo de antena |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2460869A (en) * | 1946-03-14 | 1949-02-08 | Rca Corp | Antenna |
US3156917A (en) * | 1960-02-22 | 1964-11-10 | Marelli Lenkurt S P A | Antenna reflector and feed with absorbers to reduce back radiation to feed |
US3101473A (en) * | 1960-04-14 | 1963-08-20 | Mcdonnell Aircraft Corp | Parabolic reflector with rim of absorbing material to attenuate side lobes |
US3938152A (en) * | 1963-06-03 | 1976-02-10 | Mcdonnell Douglas Corporation | Magnetic absorbers |
US3430245A (en) * | 1965-05-19 | 1969-02-25 | Whittaker Corp | Spherical reflector with lens to convert to parabolic surface |
US3314071A (en) * | 1965-07-12 | 1967-04-11 | Gen Dynamics Corp | Device for control of antenna illumination tapers comprising a tapered surface of rf absorption material |
GB1234778A (en) * | 1967-08-22 | 1971-06-09 | E M I Ltd Formerly Known As El | Improvements in or relating to surfaces for reflecting microwave energy |
US3514781A (en) * | 1967-12-05 | 1970-05-26 | Us Army | Broadband,high gain antenna with relatively constant beamwidth |
JPS5513162B2 (fr) * | 1973-09-14 | 1980-04-07 |
-
1975
- 1975-03-14 FR FR7508072A patent/FR2304192A1/fr active Granted
-
1976
- 1976-03-05 CH CH279776A patent/CH600605A5/xx not_active IP Right Cessation
- 1976-03-09 US US05/665,445 patent/US4096483A/en not_active Expired - Lifetime
- 1976-03-11 GB GB9864/76A patent/GB1513521A/en not_active Expired
- 1976-03-11 NL NLAANVRAGE7602556,A patent/NL177367C/xx not_active IP Right Cessation
- 1976-03-12 LU LU74538A patent/LU74538A1/xx unknown
- 1976-03-12 IT IT48545/76A patent/IT1057979B/it active
- 1976-03-12 DE DE2610506A patent/DE2610506C2/de not_active Expired
- 1976-03-12 BE BE165087A patent/BE839482A/fr not_active IP Right Cessation
- 1976-03-15 JP JP51028025A patent/JPS6035844B2/ja not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2568062A1 (fr) * | 1984-07-17 | 1986-01-24 | Thomson Alcatel Espace | Antenne bifrequence a meme couverture de zone a polarisation croisee pour satellites de telecommunications |
EP0170154A1 (fr) * | 1984-07-17 | 1986-02-05 | Alcatel Espace | Antenne bi-fréquence à même couverture de zone à polarisation croisée pour satellites de télécommunications |
EP0203709A1 (fr) * | 1985-04-26 | 1986-12-03 | BRITISH TELECOMMUNICATIONS public limited company | Atténuation de signaux micro-ondes |
US4786915A (en) * | 1985-04-26 | 1988-11-22 | British Telecommunications Public Limited Company | Attenuation of microwave signals |
GB2174846B (en) * | 1985-04-26 | 1990-01-17 | British Telecomm | Attenuation of microwave signals |
EP0284897A1 (fr) * | 1987-03-19 | 1988-10-05 | Siemens Aktiengesellschaft | Antenne directive micro-ondes à deux réflecteurs |
Also Published As
Publication number | Publication date |
---|---|
JPS51139235A (en) | 1976-12-01 |
NL177367C (nl) | 1985-09-02 |
IT1057979B (it) | 1982-03-30 |
LU74538A1 (fr) | 1976-09-01 |
GB1513521A (en) | 1978-06-07 |
JPS6035844B2 (ja) | 1985-08-16 |
NL7602556A (nl) | 1976-09-16 |
FR2304192B1 (fr) | 1982-04-30 |
DE2610506C2 (de) | 1982-03-04 |
CH600605A5 (fr) | 1978-06-30 |
US4096483A (en) | 1978-06-20 |
NL177367B (nl) | 1985-04-01 |
BE839482A (fr) | 1976-07-01 |
DE2610506A1 (de) | 1976-09-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |