DE3867668D1 - DOUBLE MIRROR MICROWAVE DIRECTIONAL ANTENNA ARRANGEMENT. - Google Patents

DOUBLE MIRROR MICROWAVE DIRECTIONAL ANTENNA ARRANGEMENT.

Info

Publication number
DE3867668D1
DE3867668D1 DE8888104119T DE3867668T DE3867668D1 DE 3867668 D1 DE3867668 D1 DE 3867668D1 DE 8888104119 T DE8888104119 T DE 8888104119T DE 3867668 T DE3867668 T DE 3867668T DE 3867668 D1 DE3867668 D1 DE 3867668D1
Authority
DE
Germany
Prior art keywords
directional antenna
antenna arrangement
double mirror
microwave directional
reflector
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 - Fee Related
Application number
DE8888104119T
Other languages
German (de)
Inventor
Uwe Dipl Ing Leupelt
Wolfgang Dipl Ing Loew
Dipl-Math Nielsen
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE8888104119T priority Critical patent/DE3867668D1/en
Application granted granted Critical
Publication of DE3867668D1 publication Critical patent/DE3867668D1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H01Q19/192—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

Abstract

The directional antenna of the co-called Gregory type has a main reflector (1) in the form of a non-rotationally symmetric paraboloid and an elliptic reflector (2) positioned in front of a primary emitter (3). The elliptic reflector to cover the main reflector and has a frequency range from 3,4 to 4.2 GHz. An improvement in performance is obtained using an ellipsoid shape having three different half axes (a,b,c).
DE8888104119T 1987-03-18 1988-03-15 DOUBLE MIRROR MICROWAVE DIRECTIONAL ANTENNA ARRANGEMENT. Expired - Fee Related DE3867668D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8888104119T DE3867668D1 (en) 1987-03-18 1988-03-15 DOUBLE MIRROR MICROWAVE DIRECTIONAL ANTENNA ARRANGEMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3708829 1987-03-18
DE8888104119T DE3867668D1 (en) 1987-03-18 1988-03-15 DOUBLE MIRROR MICROWAVE DIRECTIONAL ANTENNA ARRANGEMENT.

Publications (1)

Publication Number Publication Date
DE3867668D1 true DE3867668D1 (en) 1992-02-27

Family

ID=6323396

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8888104119T Expired - Fee Related DE3867668D1 (en) 1987-03-18 1988-03-15 DOUBLE MIRROR MICROWAVE DIRECTIONAL ANTENNA ARRANGEMENT.

Country Status (4)

Country Link
EP (1) EP0284883B1 (en)
AT (1) ATE71773T1 (en)
DE (1) DE3867668D1 (en)
ES (1) ES2028922T3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4140841A1 (en) * 1990-12-20 1992-07-02 Siemens Ag Microwave directional antenna with offset reflector and sub-reflector - is installed with excitation horn in trough-shaped, floor cover of cylindrical collar inclined forwards and downwards
IT1275349B (en) * 1994-11-25 1997-08-05 Alenia Spazio Spa ANTENNA WITH ROTARY ELLIPTICAL BEAM WITH POSSIBILITY OF RECONFIGURATION AND BEAM ZOOM
US6496682B2 (en) * 1998-09-14 2002-12-17 Space Systems/Loral, Inc. Satellite communication system employing unique spot beam antenna design
US6397039B1 (en) * 1998-09-14 2002-05-28 Space Systems/Loral, Inc. Satellite communication system using multiple ground station RF power control in a single downlink beam
FR2783377A1 (en) * 1998-09-14 2000-03-17 Loral Space Systems Inc Multiple beam satellite communications system, e.g. for digital TV, using receiver with signal combining and separating architecture to feed channel amplifiers providing ground stations with individual downlink power control facility
US6243048B1 (en) * 2000-02-04 2001-06-05 Space Systems/Loral, Inc. Gregorian reflector antenna system having a subreflector optimized for an elliptical antenna aperture
US6411262B1 (en) * 2000-08-22 2002-06-25 Space Systems/Loral, Inc. Shaped reflector antenna system configuration for use on a communication satellite

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3562753A (en) * 1968-02-23 1971-02-09 Hitachi Ltd Casseyrain antenna system with rotatable main reflector for scanning
DE3209513A1 (en) * 1982-03-16 1984-02-09 ANT Nachrichtentechnik GmbH, 7150 Backnang Eccentric Parabolic Antenna with Low Cross Polarization

Also Published As

Publication number Publication date
ATE71773T1 (en) 1992-02-15
EP0284883A1 (en) 1988-10-05
EP0284883B1 (en) 1992-01-15
ES2028922T3 (en) 1992-07-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee