EP0043689A3 - Beam waveguide feed for antenna - Google Patents

Beam waveguide feed for antenna Download PDF

Info

Publication number
EP0043689A3
EP0043689A3 EP81302955A EP81302955A EP0043689A3 EP 0043689 A3 EP0043689 A3 EP 0043689A3 EP 81302955 A EP81302955 A EP 81302955A EP 81302955 A EP81302955 A EP 81302955A EP 0043689 A3 EP0043689 A3 EP 0043689A3
Authority
EP
European Patent Office
Prior art keywords
waveguide
horn
reflector
ground level
beam waveguide
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.)
Withdrawn
Application number
EP81302955A
Other languages
German (de)
French (fr)
Other versions
EP0043689A2 (en
Inventor
John Richard Brain
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Publication of EP0043689A2 publication Critical patent/EP0043689A2/en
Publication of EP0043689A3 publication Critical patent/EP0043689A3/en
Withdrawn legal-status Critical Current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
    • H01Q19/10—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
    • H01Q19/191—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 wherein the primary active element uses one or more deflecting surfaces, e.g. beam waveguide feeds

Abstract

In microwave communication systems it is common prac­ tice to use a beam waveguide to transmit energy between a waveguide (2) connected to transmitting and receiving equip­ ment located at ground level and a main antenna reflector mounted above ground level. Hitherto the waveguide (2) has terminated in a very large, accurately ma­ chined, horn which is necessary to produce a beam having a small angle of divergence suitable for entry into the beam waveguide (6).
The present invention proposes that this large (and very expensive) horn be replaced by a relatively small horn (18) which produces a beam having a relatively wide angle of diver­ gence. By using a concave reflector (22) and a sub-reflector (21) in Cassegrain configuration this widely diverging beam is converted into a more nearly parallel (or a totally parallel) beam which enters the beam waveguide (6) as illustrated.
EP81302955A 1980-07-04 1981-06-29 Beam waveguide feed for antenna Withdrawn EP0043689A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8022088A GB2079538A (en) 1980-07-04 1980-07-04 Beam waveguide feed for antenna
GB8022088 1980-07-04

Publications (2)

Publication Number Publication Date
EP0043689A2 EP0043689A2 (en) 1982-01-13
EP0043689A3 true EP0043689A3 (en) 1982-01-20

Family

ID=10514563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81302955A Withdrawn EP0043689A3 (en) 1980-07-04 1981-06-29 Beam waveguide feed for antenna

Country Status (3)

Country Link
EP (1) EP0043689A3 (en)
JP (1) JPS5748805A (en)
GB (1) GB2079538A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3133642B2 (en) * 1995-05-19 2001-02-13 花王株式会社 Hair cosmetics
BR9813264A (en) 1997-10-23 2000-12-26 Procter & Gamble fatty acids, surfactant systems and consumer products based on them
US6890894B2 (en) 2000-02-22 2005-05-10 The Procter & Gamble Company Fatty acids, soaps surfactant systems, and consumer products based thereon
US7633425B2 (en) 2007-11-16 2009-12-15 Ratheon Company Waveguide system comprising reflective surfaces for directing a wave beam to a target
CN102324596B (en) * 2011-06-09 2013-10-09 中国工程物理研究院电子工程研究所 TE01 mode Bend structure of millimeter wave boardband plane mirror type
JP7352150B2 (en) * 2019-08-27 2023-09-28 三菱電機株式会社 Beam reflection mechanism, reflector drive mechanism and reflector antenna device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1245072A (en) * 1958-11-21 1960-11-04 Improvements in the transmission of electromagnetic wave beams
US3521288A (en) * 1968-07-10 1970-07-21 Us Air Force Antenna array employing beam waveguide feed
JPS5261458A (en) * 1975-11-17 1977-05-20 Mitsubishi Electric Corp Beam power supply antenna system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1245072A (en) * 1958-11-21 1960-11-04 Improvements in the transmission of electromagnetic wave beams
US3521288A (en) * 1968-07-10 1970-07-21 Us Air Force Antenna array employing beam waveguide feed
JPS5261458A (en) * 1975-11-17 1977-05-20 Mitsubishi Electric Corp Beam power supply antenna system

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
IEEE International Antennas and Propagation Symposium, Dec. 1969, Austin, Mac Graw-Hill, New York, (US) Y TAKEICHI et al.: "The Dual-Reflector Launcher for the Beam Waveguide", pages 70-77 *
IEEE International Antennas and Propagation Symposium, Sept. 1970, Columbus, Mac Graw-Hill, New York, (US) T. KITSUREGAWA et al.: "The Four Reflector Launcher for the Beam Waveguide", pages 94-99 *
L'ONDE ELECTRIQUE, Vol. 51, Nr. 6, June 1971, Masson Paris, (FR) S. DRABOWITCH et al.: "Conception Radioelectrique d'une Antenne Experimentale de Telecommunication Spatiale dans la Gamme 10-35 GHz", pages 502-508 *
PATENT ABSTRACTS OF JAPAN, Vol. 1, No. 127, page 5601E77, & JP-A-52 061 458 (20-05-1977) *

Also Published As

Publication number Publication date
GB2079538A (en) 1982-01-20
EP0043689A2 (en) 1982-01-13
JPS5748805A (en) 1982-03-20

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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PUAL Search report despatched

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AK Designated contracting states

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18D Application deemed to be withdrawn

Effective date: 19821225

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BRAIN, JOHN RICHARD