ATE71773T1 - DUAL MICROWAVE DIRECTIONAL ANTENNA ARRANGEMENT. - Google Patents

DUAL MICROWAVE DIRECTIONAL ANTENNA ARRANGEMENT.

Info

Publication number
ATE71773T1
ATE71773T1 AT88104119T AT88104119T ATE71773T1 AT E71773 T1 ATE71773 T1 AT E71773T1 AT 88104119 T AT88104119 T AT 88104119T AT 88104119 T AT88104119 T AT 88104119T AT E71773 T1 ATE71773 T1 AT E71773T1
Authority
AT
Austria
Prior art keywords
directional antenna
antenna arrangement
microwave directional
dual microwave
hyperboloid
Prior art date
Application number
AT88104119T
Other languages
German (de)
Inventor
Uwe Dipl-Ing Leupelt
Wolfgang Dipl-Ing Loew
Christian Dipl-Math Nielsen
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
Application granted granted Critical
Publication of ATE71773T1 publication Critical patent/ATE71773T1/en

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 catchment reflector (2), provided for an offset supplied Gregory or Cassegrain antenna is not a section of a rotation ellipsoid or rotation hyperboloid, but of a general ellipsoid (4) or hyperboloid having three half axes (a, b, c) of different sizes. The invention is intended to be used for directional radio and satellite radio antennas. <IMAGE>
AT88104119T 1987-03-18 1988-03-15 DUAL MICROWAVE DIRECTIONAL ANTENNA ARRANGEMENT. ATE71773T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3708829 1987-03-18
EP88104119A EP0284883B1 (en) 1987-03-18 1988-03-15 Dual reflector microwave directional antenna

Publications (1)

Publication Number Publication Date
ATE71773T1 true ATE71773T1 (en) 1992-02-15

Family

ID=6323396

Family Applications (1)

Application Number Title Priority Date Filing Date
AT88104119T ATE71773T1 (en) 1987-03-18 1988-03-15 DUAL 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
IT1308219B1 (en) * 1998-09-14 2001-12-10 Loral Space Systems Inc IMPROVED SYSTEM FOR SATELLITE COMMUNICATIONS INCLUDING RF INPUT MULTIPLATORS FROM A PLURALITY OF LOCAL BANDS TO A
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
US6496682B2 (en) * 1998-09-14 2002-12-17 Space Systems/Loral, Inc. Satellite communication system employing unique spot beam antenna design
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
ES2028922T3 (en) 1992-07-16
EP0284883A1 (en) 1988-10-05
EP0284883B1 (en) 1992-01-15
DE3867668D1 (en) 1992-02-27

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee