ATE207657T1 - BEAM FORMING NETWORK FOR A MULTI-MODE MULTI-BEAM REFLECTOR ANTENNA - Google Patents

BEAM FORMING NETWORK FOR A MULTI-MODE MULTI-BEAM REFLECTOR ANTENNA

Info

Publication number
ATE207657T1
ATE207657T1 AT92101034T AT92101034T ATE207657T1 AT E207657 T1 ATE207657 T1 AT E207657T1 AT 92101034 T AT92101034 T AT 92101034T AT 92101034 T AT92101034 T AT 92101034T AT E207657 T1 ATE207657 T1 AT E207657T1
Authority
AT
Austria
Prior art keywords
forming network
optimisation
reflector antenna
coefficients
reflector
Prior art date
Application number
AT92101034T
Other languages
German (de)
Inventor
Pasquale Capece
Stefano Badessi
Original Assignee
Alenia Spazio Spa
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 Alenia Spazio Spa filed Critical Alenia Spazio Spa
Application granted granted Critical
Publication of ATE207657T1 publication Critical patent/ATE207657T1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
    • H01Q3/40—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means with phasing matrix
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device

Landscapes

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

Abstract

This invention concerns a partially overlapped beam antenna system, formed by a reflector, an array of radiating elements and a beam-forming network, all in a peculiar configuration which is the most innovative feature of this invention. The configuration consists of a double cascade which exploits all possible degrees of freedom applicable to the optimisation of the radiating element excitation coefficients. The optimisation of such coefficients in a multi-feed reflector system, with two or more overlapping beams, only the orthogonality of the exciters has to be ensured, each for its own coverage. This invention belongs to the electronic antenna field, with a particularly favourable application in space-borne platforms. <IMAGE>
AT92101034T 1991-01-23 1992-01-23 BEAM FORMING NETWORK FOR A MULTI-MODE MULTI-BEAM REFLECTOR ANTENNA ATE207657T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM910050A IT1244907B (en) 1991-01-23 1991-01-23 CONFIGURATION AND TECHNIQUE OF MULTIMODAL BAND FORMING NETS FOR MULTI-BAND REFLECTIVE ANTENNAS.

Publications (1)

Publication Number Publication Date
ATE207657T1 true ATE207657T1 (en) 2001-11-15

Family

ID=11399778

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92101034T ATE207657T1 (en) 1991-01-23 1992-01-23 BEAM FORMING NETWORK FOR A MULTI-MODE MULTI-BEAM REFLECTOR ANTENNA

Country Status (4)

Country Link
EP (1) EP0504552B1 (en)
AT (1) ATE207657T1 (en)
DE (1) DE69232146T2 (en)
IT (1) IT1244907B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2732163B1 (en) * 1995-03-20 1997-05-30 Europ Agence Spatiale DEVICE FOR SUPPLYING A MULTI-SOURCE AND MULTI-BEAM ANTENNA
US5856810A (en) * 1996-10-02 1999-01-05 Gec-Marconi Hazeltine Corp. Electronic Systems Division Low sidelobe multi-beam lossless feed networks for array antennas
US6922116B1 (en) 2001-09-12 2005-07-26 Kathrein-Werke Kg Generating arbitrary passive beam forming networks
EP1398849B1 (en) * 2002-09-11 2008-04-02 Kathrein-Werke KG Method for generating arbitrary passive beam forming networks

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231040A (en) * 1978-12-11 1980-10-28 Motorola, Inc. Simultaneous multiple beam antenna array matrix and method thereof
FR2560446B1 (en) * 1984-01-05 1986-05-30 Europ Agence Spatiale POWER DISTRIBUTOR FOR MULTI-BEAM ANTENNA WITH SHARED SOURCE ELEMENTS
US4638317A (en) * 1984-06-19 1987-01-20 Westinghouse Electric Corp. Orthogonal beam forming network
US4633259A (en) * 1984-07-10 1986-12-30 Westinghouse Electric Corp. Lossless orthogonal beam forming network
CA1226934A (en) * 1986-09-26 1987-09-15 Henry Downs Reconfigurable beam-forming network that provides in- phase power to each region
US4989011A (en) * 1987-10-23 1991-01-29 Hughes Aircraft Company Dual mode phased array antenna system

Also Published As

Publication number Publication date
EP0504552B1 (en) 2001-10-24
DE69232146T2 (en) 2002-07-11
ITRM910050A0 (en) 1991-01-23
IT1244907B (en) 1994-09-13
ITRM910050A1 (en) 1992-07-24
DE69232146D1 (en) 2001-11-29
EP0504552A1 (en) 1992-09-23

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
EEIH Change in the person of patent owner
REN Ceased due to non-payment of the annual fee