FR2180585A1 - - Google Patents
Info
- Publication number
- FR2180585A1 FR2180585A1 FR7214251A FR7214251A FR2180585A1 FR 2180585 A1 FR2180585 A1 FR 2180585A1 FR 7214251 A FR7214251 A FR 7214251A FR 7214251 A FR7214251 A FR 7214251A FR 2180585 A1 FR2180585 A1 FR 2180585A1
- Authority
- FR
- France
- 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
- 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
- H01Q19/02—Details
- H01Q19/021—Means for reducing undesirable effects
- H01Q19/026—Means for reducing undesirable effects for reducing the primary feed spill-over
-
- 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
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7214251A FR2180585B1 (US06878557-20050412-C00065.png) | 1972-04-21 | 1972-04-21 | |
| DE2319731A DE2319731C3 (de) | 1972-04-21 | 1973-04-18 | Exzentrische Cassegrain-Antenne |
| CA169,919A CA962342A (en) | 1972-04-21 | 1973-04-18 | Capped antenna of the offset cassegrainian type |
| US00352332A US3810187A (en) | 1972-04-21 | 1973-04-18 | Capped antenna of the offset cassegrainian type |
| GB4790272A GB1359266A (en) | 1972-04-21 | 1973-04-18 | Capped antenna of the offset cassegrainian type |
| IT49599/73A IT980311B (it) | 1972-04-21 | 1973-04-20 | Antenna del tipo cassegrain a decentramento mnita di copertura |
| JP4469973A JPS5320342B2 (US06878557-20050412-C00065.png) | 1972-04-21 | 1973-04-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7214251A FR2180585B1 (US06878557-20050412-C00065.png) | 1972-04-21 | 1972-04-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2180585A1 true FR2180585A1 (US06878557-20050412-C00065.png) | 1973-11-30 |
| FR2180585B1 FR2180585B1 (US06878557-20050412-C00065.png) | 1974-12-20 |
Family
ID=9097330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7214251A Expired FR2180585B1 (US06878557-20050412-C00065.png) | 1972-04-21 | 1972-04-21 |
Country Status (7)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985005692A1 (en) * | 1984-05-31 | 1985-12-19 | Hr Smith (Technical Developments) Limited | Anechoid chambers |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2527545C3 (de) * | 1975-06-20 | 1981-04-16 | Naamloze Vennootschap Philips' Gloeilampenfabrieken, Eindhoven | Im Spritzgußverfahren hergestellte Hornantenne |
| DE2749443C3 (de) * | 1977-11-04 | 1980-06-04 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Mikrowellen-Breitbandrichtfunkantenne in Muschelbauweise |
| US4126864A (en) * | 1978-01-23 | 1978-11-21 | Hopkins B | Ice shield for micro-wave antenna |
| US4626863A (en) * | 1983-09-12 | 1986-12-02 | Andrew Corporation | Low side lobe Gregorian antenna |
| GB8510724D0 (en) * | 1985-04-26 | 1985-06-05 | British Telecomm | Controlled attenuation of microwave signals |
| 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 |
| DE3915280C2 (de) * | 1989-05-10 | 1993-11-04 | Berthold Lab Prof R | Vorrichtung zur mikrowellen-transmissions- oder absorptionsmessung |
| GB9006752D0 (en) * | 1990-03-27 | 1990-05-23 | Ferguson Ltd | Microwave antenna unit |
| DE19953271A1 (de) * | 1999-11-06 | 2001-05-10 | Airsys Navigation Systems Gmbh | Sendeantenne |
| JP2004077399A (ja) * | 2002-08-22 | 2004-03-11 | Hitachi Ltd | ミリ波レーダ |
| WO2019195700A1 (en) * | 2018-04-05 | 2019-10-10 | L3 Essco Incorporated | A metal space frame radome |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1128952A (fr) * | 1955-03-17 | 1957-01-14 | Materiel Telephonique | Antenne pour ondes ultra-courtes |
| US3733609A (en) * | 1971-07-02 | 1973-05-15 | Radiation Inc | Shrouded offset parabolic reflector antenna |
-
1972
- 1972-04-21 FR FR7214251A patent/FR2180585B1/fr not_active Expired
-
1973
- 1973-04-18 DE DE2319731A patent/DE2319731C3/de not_active Expired
- 1973-04-18 US US00352332A patent/US3810187A/en not_active Expired - Lifetime
- 1973-04-18 GB GB4790272A patent/GB1359266A/en not_active Expired
- 1973-04-18 CA CA169,919A patent/CA962342A/en not_active Expired
- 1973-04-20 IT IT49599/73A patent/IT980311B/it active
- 1973-04-21 JP JP4469973A patent/JPS5320342B2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985005692A1 (en) * | 1984-05-31 | 1985-12-19 | Hr Smith (Technical Developments) Limited | Anechoid chambers |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4922061A (US06878557-20050412-C00065.png) | 1974-02-27 |
| FR2180585B1 (US06878557-20050412-C00065.png) | 1974-12-20 |
| IT980311B (it) | 1974-09-30 |
| JPS5320342B2 (US06878557-20050412-C00065.png) | 1978-06-26 |
| DE2319731C3 (de) | 1981-01-08 |
| DE2319731A1 (de) | 1973-10-25 |
| GB1359266A (en) | 1974-07-10 |
| DE2319731B2 (de) | 1980-04-24 |
| CA962342A (en) | 1975-02-04 |
| US3810187A (en) | 1974-05-07 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |