GB1359266A - Capped antenna of the offset cassegrainian type - Google Patents

Capped antenna of the offset cassegrainian type

Info

Publication number
GB1359266A
GB1359266A GB4790272A GB1886573A GB1359266A GB 1359266 A GB1359266 A GB 1359266A GB 4790272 A GB4790272 A GB 4790272A GB 1886573 A GB1886573 A GB 1886573A GB 1359266 A GB1359266 A GB 1359266A
Authority
GB
United Kingdom
Prior art keywords
reflector
chassis
cap
sub
source
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
Application number
GB4790272A
Other languages
English (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
Publication of GB1359266A publication Critical patent/GB1359266A/en
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

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Details Of Aerials (AREA)
GB4790272A 1972-04-21 1973-04-18 Capped antenna of the offset cassegrainian type Expired GB1359266A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB1359266A true GB1359266A (en) 1974-07-10

Family

ID=9097330

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4790272A Expired GB1359266A (en) 1972-04-21 1973-04-18 Capped antenna of the offset cassegrainian type

Country Status (7)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2408229A1 (fr) * 1977-11-04 1979-06-01 Siemens Ag Antenne directionnelle a micro-ondes, a large bande
GB2174846A (en) * 1985-04-26 1986-11-12 British Telecomm Attenuation of microwave signals
GB2244600A (en) * 1990-03-27 1991-12-04 Ferguson Ltd Microwave antenna unit

Families Citing this family (9)

* Cited by examiner, † Cited by third party
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
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
AU4407685A (en) * 1984-05-31 1985-12-31 H.R. Smith (Technical Developments) Ltd. Anechoic chambers
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
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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2408229A1 (fr) * 1977-11-04 1979-06-01 Siemens Ag Antenne directionnelle a micro-ondes, a large bande
GB2174846A (en) * 1985-04-26 1986-11-12 British Telecomm Attenuation of microwave signals
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
GB2244600A (en) * 1990-03-27 1991-12-04 Ferguson Ltd Microwave antenna unit

Also Published As

Publication number Publication date
JPS4922061A (fi) 1974-02-27
FR2180585B1 (fi) 1974-12-20
IT980311B (it) 1974-09-30
JPS5320342B2 (fi) 1978-06-26
DE2319731C3 (de) 1981-01-08
FR2180585A1 (fi) 1973-11-30
DE2319731A1 (de) 1973-10-25
DE2319731B2 (de) 1980-04-24
CA962342A (en) 1975-02-04
US3810187A (en) 1974-05-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee