GB1513452A - Subreflectors for toroidal reflector antennas - Google Patents

Subreflectors for toroidal reflector antennas

Info

Publication number
GB1513452A
GB1513452A GB18871/75A GB1887175A GB1513452A GB 1513452 A GB1513452 A GB 1513452A GB 18871/75 A GB18871/75 A GB 18871/75A GB 1887175 A GB1887175 A GB 1887175A GB 1513452 A GB1513452 A GB 1513452A
Authority
GB
United Kingdom
Prior art keywords
subreflector
rays
main reflector
focus
single point
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
GB18871/75A
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.)
Comsat Corp
Original Assignee
Comsat Corp
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 Comsat Corp filed Critical Comsat Corp
Publication of GB1513452A publication Critical patent/GB1513452A/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
    • H01Q19/10—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

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

1513452 Aerials COMMUNICATIONS SATELLITE CORP 6 May 1975 [31 May 1974] 18871/75 Heading H4A In a toroidal reflector aerial system, a main reflector M has the shape of a surface portion of a torus and has a feed assembly comprising an aberration-correcting subreflector S and a feed horn H, the system being such that if an incoming beam to the main reflector is considered as a bundle of parallel rays, no two rays are incident at the same point on the surface of the subreflector S, substantially all rays focus at a single point at said feed horn and substantially all the ray path lengths from a reference aperture plane to said single point of focus are constant and equal to a predetermined reference path length. The main reflector M may be a section of a surface of revolution such as a circle, ellipse or hyperbola. In order to minimise aberrations, equations are derived from which points may be obtained using a digital computer for feeding into a numerically controlled milling machine used to machine the subreflector S.
GB18871/75A 1974-05-31 1975-05-06 Subreflectors for toroidal reflector antennas Expired GB1513452A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US475226A US3922682A (en) 1974-05-31 1974-05-31 Aberration correcting subreflectors for toroidal reflector antennas

Publications (1)

Publication Number Publication Date
GB1513452A true GB1513452A (en) 1978-06-07

Family

ID=23886720

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18871/75A Expired GB1513452A (en) 1974-05-31 1975-05-06 Subreflectors for toroidal reflector antennas

Country Status (9)

Country Link
US (1) US3922682A (en)
JP (1) JPS51863A (en)
CA (1) CA1039843A (en)
DE (1) DE2523800A1 (en)
FR (1) FR2275901A1 (en)
GB (1) GB1513452A (en)
IT (1) IT1036133B (en)
NL (1) NL7506474A (en)
SE (1) SE403855B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154067A (en) * 1984-02-09 1985-08-29 Gen Electric Plc An earth terminal for satellite communication systems
US4833484A (en) * 1984-02-09 1989-05-23 The General Electric Company, P.L.C. Earth terminal for satellite communication

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD244096S (en) * 1976-01-07 1977-04-19 Mecaniplast Plate-type antenna
US4145695A (en) * 1977-03-01 1979-03-20 Bell Telephone Laboratories, Incorporated Launcher reflectors for correcting for astigmatism in off-axis fed reflector antennas
US4201992A (en) * 1978-04-20 1980-05-06 Communications Satellite Corporation Multibeam communications satellite
US4272769A (en) * 1979-08-27 1981-06-09 Young Frederick A Microwave antenna with parabolic main reflector
JPS5698905A (en) * 1980-01-11 1981-08-08 Kokusai Denshin Denwa Co Ltd <Kdd> Dual reflecting mirror antenna
US4339757A (en) * 1980-11-24 1982-07-13 Bell Telephone Laboratories, Incorporated Broadband astigmatic feed arrangement for an antenna
US4343004A (en) * 1980-11-24 1982-08-03 Bell Telephone Laboratories, Incorporated Broadband astigmatic feed arrangement for an antenna
US4355314A (en) * 1980-11-28 1982-10-19 Bell Telephone Laboratories, Incorporated Wide-field-of-view antenna arrangement
JPS57178402A (en) * 1981-04-27 1982-11-02 Kokusai Denshin Denwa Co Ltd <Kdd> Multireflex mirror antenna
JPS58139503A (en) * 1982-02-15 1983-08-18 Kokusai Denshin Denwa Co Ltd <Kdd> Beam feeding device
US4535338A (en) * 1982-05-10 1985-08-13 At&T Bell Laboratories Multibeam antenna arrangement
US4491848A (en) * 1982-08-30 1985-01-01 At&T Bell Laboratories Substantially frequency-independent aberration correcting antenna arrangement
US4482898A (en) * 1982-10-12 1984-11-13 At&T Bell Laboratories Antenna feed arrangement for correcting for astigmatism
US4638322A (en) * 1984-02-14 1987-01-20 The Boeing Company Multiple feed antenna
JPS60178709A (en) * 1984-02-24 1985-09-12 Nippon Telegr & Teleph Corp <Ntt> Offset multi-reflector antenna
US4631545A (en) * 1984-11-16 1986-12-23 At&T Bell Laboratories Antenna arrangement capable of astigmatism correction
US4806985A (en) * 1986-07-11 1989-02-21 Xerox Corporation Stripper fingers
US4786910A (en) * 1987-11-05 1988-11-22 American Telephone And Telegraph Company, At&T Bell Laboratories Single reflector multibeam antenna arrangement with a wide field of view
US5175562A (en) * 1989-06-23 1992-12-29 Northeastern University High aperture-efficient, wide-angle scanning offset reflector antenna
USD387773S (en) * 1996-10-28 1997-12-16 Weller Roger G Satellite dish protective visor
AU2001280322A1 (en) * 2000-07-10 2002-01-21 Wavefrontier Co., Ltd Reflector antenna
US6563473B2 (en) * 2001-02-22 2003-05-13 Ems Technologies Canada, Ltd. Low sidelobe contiguous-parabolic reflector array
CN101427486B (en) * 2006-05-23 2013-06-19 英特尔公司 Millimeter-wave communication system with directional antenna and one or more millimeter-wave reflectors
EP2025045B1 (en) * 2006-05-23 2011-05-11 Intel Corporation Chip-lens array antenna system
US8320942B2 (en) * 2006-06-13 2012-11-27 Intel Corporation Wireless device with directional antennas for use in millimeter-wave peer-to-peer networks and methods for adaptive beam steering
US20080094298A1 (en) * 2006-10-23 2008-04-24 Harris Corporation Antenna with Shaped Asymmetric Main Reflector and Subreflector with Asymmetric Waveguide Feed
CN102820544B (en) 2012-07-03 2015-08-19 深圳光启创新技术有限公司 A kind of antenna reflective face phasing pad pasting and reflector antenna
US20140055314A1 (en) * 2012-08-21 2014-02-27 Northeastern University Doubly shaped reflector transmitting antenna for millimeter-wave security scanning system
WO2015026398A1 (en) * 2013-08-19 2015-02-26 Garcia Antonio Ph D Spectrophotometer based on optical caustics
USD738866S1 (en) * 2013-09-25 2015-09-15 World Products Llc Antenna with dome form factor
USD814449S1 (en) * 2016-02-19 2018-04-03 Samsung Electronics Co., Ltd. Network terminal
USD815075S1 (en) * 2016-02-19 2018-04-10 Samsung Electronics Co., Ltd. Network terminal
RU2629906C1 (en) * 2016-11-09 2017-09-04 Самсунг Электроникс Ко., Лтд. Mirror antenna with double polarization and wide scanning angle
US11101569B2 (en) * 2020-01-08 2021-08-24 Dau-Chyrh Chang Toroidal compact antenna test range

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852763A (en) * 1970-06-08 1974-12-03 Communications Satellite Corp Torus-type antenna having a conical scan capability
US3737909A (en) * 1970-06-18 1973-06-05 Radiation Inc Parabolic antenna system having high-illumination and spillover efficiencies
FR2148341B1 (en) * 1971-08-09 1977-01-28 Thomson Csf

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154067A (en) * 1984-02-09 1985-08-29 Gen Electric Plc An earth terminal for satellite communication systems
US4833484A (en) * 1984-02-09 1989-05-23 The General Electric Company, P.L.C. Earth terminal for satellite communication

Also Published As

Publication number Publication date
JPS51863A (en) 1976-01-07
SE7505209L (en) 1975-12-01
DE2523800A1 (en) 1975-12-11
CA1039843A (en) 1978-10-03
US3922682A (en) 1975-11-25
FR2275901A1 (en) 1976-01-16
NL7506474A (en) 1975-12-02
SE403855B (en) 1978-09-04
IT1036133B (en) 1979-10-30

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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