FR2180585B1 - - Google Patents

Info

Publication number
FR2180585B1
FR2180585B1 FR7214251A FR7214251A FR2180585B1 FR 2180585 B1 FR2180585 B1 FR 2180585B1 FR 7214251 A FR7214251 A FR 7214251A FR 7214251 A FR7214251 A FR 7214251A FR 2180585 B1 FR2180585 B1 FR 2180585B1
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.)
Expired
Application number
FR7214251A
Other languages
French (fr)
Other versions
FR2180585A1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thales SA
Original Assignee
Thomson CSF SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7214251A priority Critical patent/FR2180585B1/fr
Priority to US00352332A priority patent/US3810187A/en
Priority to CA169,919A priority patent/CA962342A/en
Priority to DE2319731A priority patent/DE2319731C3/en
Priority to GB4790272A priority patent/GB1359266A/en
Priority to IT49599/73A priority patent/IT980311B/en
Priority to JP4469973A priority patent/JPS5320342B2/ja
Publication of FR2180585A1 publication Critical patent/FR2180585A1/fr
Application granted granted Critical
Publication of FR2180585B1 publication Critical patent/FR2180585B1/fr
Expired legal-status Critical Current

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
FR7214251A 1972-04-21 1972-04-21 Expired FR2180585B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
FR7214251A FR2180585B1 (en) 1972-04-21 1972-04-21
US00352332A US3810187A (en) 1972-04-21 1973-04-18 Capped antenna of the offset cassegrainian type
CA169,919A CA962342A (en) 1972-04-21 1973-04-18 Capped antenna of the offset cassegrainian type
DE2319731A DE2319731C3 (en) 1972-04-21 1973-04-18 Eccentric Cassegrain antenna
GB4790272A GB1359266A (en) 1972-04-21 1973-04-18 Capped antenna of the offset cassegrainian type
IT49599/73A IT980311B (en) 1972-04-21 1973-04-20 CASSEGRAIN TYPE ANTENNA WITH DECENTRALIZATION WITHOUT COVERAGE
JP4469973A JPS5320342B2 (en) 1972-04-21 1973-04-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7214251A FR2180585B1 (en) 1972-04-21 1972-04-21

Publications (2)

Publication Number Publication Date
FR2180585A1 FR2180585A1 (en) 1973-11-30
FR2180585B1 true FR2180585B1 (en) 1974-12-20

Family

ID=9097330

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7214251A Expired FR2180585B1 (en) 1972-04-21 1972-04-21

Country Status (7)

Country Link
US (1) US3810187A (en)
JP (1) JPS5320342B2 (en)
CA (1) CA962342A (en)
DE (1) DE2319731C3 (en)
FR (1) FR2180585B1 (en)
GB (1) GB1359266A (en)
IT (1) IT980311B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2527545C3 (en) * 1975-06-20 1981-04-16 Naamloze Vennootschap Philips' Gloeilampenfabrieken, Eindhoven Injection molded horn antenna
DE2749443C3 (en) * 1977-11-04 1980-06-04 Siemens Ag, 1000 Berlin Und 8000 Muenchen Microwave broadband directional antenna in shell design
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
GB2159667B (en) * 1984-05-31 1988-04-27 Smith H R Anechoic chambers
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 (en) * 1989-05-10 1993-11-04 Berthold Lab Prof R DEVICE FOR MICROWAVE TRANSMISSION OR ABSORPTION MEASUREMENT
GB9006752D0 (en) * 1990-03-27 1990-05-23 Ferguson Ltd Microwave antenna unit
DE19953271A1 (en) * 1999-11-06 2001-05-10 Airsys Navigation Systems Gmbh Transmitting antenna
JP2004077399A (en) * 2002-08-22 2004-03-11 Hitachi Ltd Milliwave radar
WO2019195700A1 (en) * 2018-04-05 2019-10-10 L3 Essco Incorporated A metal space frame radome

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1128952A (en) * 1955-03-17 1957-01-14 Materiel Telephonique Ultra-shortwave antenna
US3733609A (en) * 1971-07-02 1973-05-15 Radiation Inc Shrouded offset parabolic reflector antenna

Also Published As

Publication number Publication date
JPS5320342B2 (en) 1978-06-26
DE2319731B2 (en) 1980-04-24
GB1359266A (en) 1974-07-10
US3810187A (en) 1974-05-07
DE2319731A1 (en) 1973-10-25
IT980311B (en) 1974-09-30
JPS4922061A (en) 1974-02-27
CA962342A (en) 1975-02-04
FR2180585A1 (en) 1973-11-30
DE2319731C3 (en) 1981-01-08

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Legal Events

Date Code Title Description
ST Notification of lapse