GB1496032A - Antennae - Google Patents

Antennae

Info

Publication number
GB1496032A
GB1496032A GB3561/75A GB356175A GB1496032A GB 1496032 A GB1496032 A GB 1496032A GB 3561/75 A GB3561/75 A GB 3561/75A GB 356175 A GB356175 A GB 356175A GB 1496032 A GB1496032 A GB 1496032A
Authority
GB
United Kingdom
Prior art keywords
focus
antenna
subreflector
feeds
displaced
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
GB3561/75A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1496032A publication Critical patent/GB1496032A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • 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
    • H01Q19/192—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 with dual offset reflectors

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

1496032 Aerials WESTERN ELECTRIC CO Inc 28 Jan 1975 [31 Jan 1974] 3561/75 Heading H4A An antenna comprising a main reflector and smaller subreflector in an offset Cassegrain-type arrangement having a focus on the antenna axis has both reflectors displaced from the antenna axis 50 and disposed on opposite sides of a notional plane 59 and has a plurality of feeds 54, 55, 57, 58 (Fig. 6C) located about and displaced from the focus; the reflectors being arranged so that a point source at the focus would provide a beam whose axis impinges on the centre 60 of the main reflector 52. In the embodiment shown the feeds 54-58 are in an approximately straight line (Fig. 5, not shown) through the feed 56 at the focus, the subreflector 53 being enlarged (Fig. 6C) to compensate for spillover loss that would otherwise result. All the beam axes are directed on to the reflector centre 60. The feeds may be displaced in other directions located approximately in the focal plane. The enlarged subreflector 53 may deviate from a true hyperboloid portion and the main reflector may require reshaping from the true paraboloid portion. The antenna may be mounted on azimuth and elevation controls (Fig. 5, not shown.
GB3561/75A 1974-01-31 1975-01-28 Antennae Expired GB1496032A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US438201*A US3914768A (en) 1974-01-31 1974-01-31 Multiple-beam Cassegrainian antenna

Publications (1)

Publication Number Publication Date
GB1496032A true GB1496032A (en) 1977-12-21

Family

ID=23739668

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3561/75A Expired GB1496032A (en) 1974-01-31 1975-01-28 Antennae

Country Status (9)

Country Link
US (1) US3914768A (en)
JP (1) JPS5821850B2 (en)
BE (1) BE824830A (en)
CA (1) CA994470A (en)
DE (1) DE2503594A1 (en)
FR (1) FR2260196B1 (en)
GB (1) GB1496032A (en)
NL (1) NL183556C (en)
SE (1) SE405528B (en)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236161A (en) * 1978-09-18 1980-11-25 Bell Telephone Laboratories, Incorporated Array feed for offset satellite antenna
US4298877A (en) * 1979-01-26 1981-11-03 Solar Energy Technology, Inc. Offset-fed multi-beam tracking antenna system utilizing especially shaped reflector surfaces
US4282527A (en) * 1979-06-11 1981-08-04 General Dynamics, Pomona Division Multi-spectral detection system with common collecting means
FR2472853A1 (en) * 1979-12-27 1981-07-03 Thomson Csf ANTENNA WITH AN ADJUSTABLE BEAM AND SATELLITE COMPRISING SUCH ANTENNA
JPS5698905A (en) * 1980-01-11 1981-08-08 Kokusai Denshin Denwa Co Ltd <Kdd> Dual reflecting mirror antenna
US4355314A (en) * 1980-11-28 1982-10-19 Bell Telephone Laboratories, Incorporated Wide-field-of-view antenna arrangement
US4343000A (en) * 1981-04-06 1982-08-03 The United States Of America As Represented By The Secretary Of The Navy Aircraft self-protection radar
US4479129A (en) * 1981-09-10 1984-10-23 George Skahill Directive antenna system employing a paraboloidal main dish and ellipsoidal subdish
US4415901A (en) * 1981-09-21 1983-11-15 Bell Telephone Laboratories, Incorporated Low power beam switchable antenna arrangement
US4407001A (en) * 1981-10-02 1983-09-27 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Focal axis resolver for offset reflector antennas
DE3204029A1 (en) * 1982-02-05 1983-08-11 Messerschmitt-Bölkow-Blohm GmbH, 8000 München MULTI-REFLECTOR ANTENNA
US4482897A (en) * 1982-06-28 1984-11-13 At&T Bell Laboratories Multibeam segmented reflector antennas
JPS5991708A (en) * 1982-11-17 1984-05-26 Mitsubishi Electric Corp Antenna device
US4535476A (en) * 1982-12-01 1985-08-13 At&T Bell Laboratories Offset geometry, interference canceling receiver
DE3516811C2 (en) * 1985-05-10 1987-03-12 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Geostationary communications satellite
FR2608846B1 (en) * 1986-12-18 1989-03-24 Alcatel Thomson Faisceaux TELECOMMUNICATIONS ANTENNA WITH REFLECTOR
US4866454A (en) * 1987-03-04 1989-09-12 Droessler Justin G Multi-spectral imaging system
JPS63147013U (en) * 1987-03-19 1988-09-28
DE3820920A1 (en) * 1988-03-31 1989-11-16 Franz Eisenhofer Antenna arrangement
US5202700A (en) * 1988-11-03 1993-04-13 Westinghouse Electric Corp. Array fed reflector antenna for transmitting & receiving multiple beams
GB2227609A (en) * 1989-01-30 1990-08-01 David James George Martin Double aerial [daerial]
ES1008936Y (en) * 1989-01-31 1989-12-16 Televes S.A. SUPPORT FOR MULTISATELLITE PARABOLIC ANTENNA FEEDERS.
US5175562A (en) * 1989-06-23 1992-12-29 Northeastern University High aperture-efficient, wide-angle scanning offset reflector antenna
DE4112837A1 (en) * 1991-04-19 1992-10-22 Teldix Gmbh Aerial reflector swivel mechanism - has reflector fitted at free end of jib arm, rotatably mounted by its opposite end between two spaced, lever arms
JP2882183B2 (en) * 1992-04-24 1999-04-12 ケイディディ株式会社 Antenna device
DE4311111A1 (en) * 1993-04-05 1994-12-01 Media Tech Vertriebs Gmbh Antenna system having a main reflector and a subreflector
FR2713404B1 (en) * 1993-12-02 1996-01-05 Alcatel Espace Oriental antenna with conservation of polarization axes.
US5563609A (en) * 1994-05-16 1996-10-08 Hughes Electronics Antenna system with plural beam sequential offset
FR2765404B1 (en) * 1997-06-26 1999-09-24 Alsthom Cge Alcatel ANTENNA WITH HIGH SCANNING CAPACITY
EA200001206A1 (en) * 1998-05-20 2001-10-22 Л-3 Коммьюникейшнз Эсско, Инк. MULTI BANNER ANTENNA FOR SATELLITE COMMUNICATION, ANTENNA SYSTEM (OPTIONS)
US7286096B2 (en) * 2005-03-28 2007-10-23 Radiolink Networks, Inc. Aligned duplex antennae with high isolation
EP2491615B1 (en) * 2009-10-22 2015-12-23 Lockheed Martin Corporation Metamaterial lens feed for multiple beam antennas
US9774095B1 (en) 2011-09-22 2017-09-26 Space Systems/Loral, Llc Antenna system with multiple independently steerable shaped beams
RU2012111441A (en) 2012-03-26 2013-10-10 Джи-хо Ан COMPACT NON-AXISYMMETRIC TWO-MIRROR ANTENNA
CN102749007B (en) * 2012-07-16 2014-12-24 中国核动力研究设计院 Gauge and method for measuring size of transformation position of minor-diameter deep hole
US9806428B2 (en) 2013-06-16 2017-10-31 Siklu Communication ltd. Systems and methods for forming, directing, and narrowing communication beams
US9413078B2 (en) 2013-06-16 2016-08-09 Siklu Communication ltd. Millimeter-wave system with beam direction by switching sources
US9929474B2 (en) * 2015-07-02 2018-03-27 Sea Tel, Inc. Multiple-feed antenna system having multi-position subreflector assembly
KR101757681B1 (en) * 2016-04-12 2017-07-26 (주)인텔리안테크놀로지스 Satellite communication antenna capable of receiving multi band signal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1368820A (en) * 1963-06-14 1964-08-07 Csf High performance aerial
NL6818798A (en) * 1968-01-02 1973-08-27
FR2153164B1 (en) * 1971-09-22 1976-10-29 Thomson Csf

Also Published As

Publication number Publication date
AU7768575A (en) 1976-07-29
DE2503594C2 (en) 1988-04-14
JPS5821850B2 (en) 1983-05-04
FR2260196A1 (en) 1975-08-29
FR2260196B1 (en) 1980-01-04
US3914768A (en) 1975-10-21
SE405528B (en) 1978-12-11
NL183556C (en) 1988-11-16
NL183556B (en) 1988-06-16
JPS50110253A (en) 1975-08-30
NL7501099A (en) 1975-08-04
SE7500631L (en) 1975-08-01
BE824830A (en) 1975-05-15
DE2503594A1 (en) 1975-08-07
CA994470A (en) 1976-08-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19950127