IT1244907B - Configurazione e tecnica di reti multimodali formatrici di fasci per antenne multifascio a riflettore. - Google Patents

Configurazione e tecnica di reti multimodali formatrici di fasci per antenne multifascio a riflettore.

Info

Publication number
IT1244907B
IT1244907B ITRM910050A ITRM910050A IT1244907B IT 1244907 B IT1244907 B IT 1244907B IT RM910050 A ITRM910050 A IT RM910050A IT RM910050 A ITRM910050 A IT RM910050A IT 1244907 B IT1244907 B IT 1244907B
Authority
IT
Italy
Prior art keywords
band
configuration
multimodal
technique
antennas
Prior art date
Application number
ITRM910050A
Other languages
English (en)
Inventor
Pasquale Capece
Stefano Badessi
Original Assignee
Selenia Spazio Spa Ora Alenia
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 Selenia Spazio Spa Ora Alenia filed Critical Selenia Spazio Spa Ora Alenia
Priority to ITRM910050A priority Critical patent/IT1244907B/it
Publication of ITRM910050A0 publication Critical patent/ITRM910050A0/it
Priority to AT92101034T priority patent/ATE207657T1/de
Priority to DE69232146T priority patent/DE69232146T2/de
Priority to EP92101034A priority patent/EP0504552B1/en
Publication of ITRM910050A1 publication Critical patent/ITRM910050A1/it
Application granted granted Critical
Publication of IT1244907B publication Critical patent/IT1244907B/it

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

Sistema d'antenna a fasci parzialmente sovrapposti, costituito essenzialmente da un riflettore, una schiera di sorgenti radianti ed una rete formatrice di fascio, nella cui configurazione risiede l'aspetto più originale dell'invenzione, essa infatti si presenta in doppia cascata, elemento che permette di utilizzare tutti i gradi di libertà disponibili nell'ottimizzazione dei coefficienti di eccitazione degli elementi radianti, cioè nell'effettuare l'ottimizzazione di detti coefficienti nel sistema riflettore più "feeds" nel caso in cui siano presenti due o più coperture che si sovrappongono si deve imporre il solo vincolo di ortogonalità tra gli insiemi di eccitazione ottimizzati ciascuno per ogni diversa copertura.L'invenzione si colloca nel campo dell'elettronica per le antenne, con particolare riguardo al campo delle applicazioni spaziali.
ITRM910050A 1991-01-23 1991-01-23 Configurazione e tecnica di reti multimodali formatrici di fasci per antenne multifascio a riflettore. IT1244907B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITRM910050A IT1244907B (it) 1991-01-23 1991-01-23 Configurazione e tecnica di reti multimodali formatrici di fasci per antenne multifascio a riflettore.
AT92101034T ATE207657T1 (de) 1991-01-23 1992-01-23 Netzwerk zur strahlformung für eine mehrmoden- mehrstrahl-reflektorantenne
DE69232146T DE69232146T2 (de) 1991-01-23 1992-01-23 Netzwerk zur Strahlformung für eine Mehrmoden-Mehrstrahl-Reflektorantenne
EP92101034A EP0504552B1 (en) 1991-01-23 1992-01-23 Multi-mode beam forming networks for multi beam reflector antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM910050A IT1244907B (it) 1991-01-23 1991-01-23 Configurazione e tecnica di reti multimodali formatrici di fasci per antenne multifascio a riflettore.

Publications (3)

Publication Number Publication Date
ITRM910050A0 ITRM910050A0 (it) 1991-01-23
ITRM910050A1 ITRM910050A1 (it) 1992-07-24
IT1244907B true IT1244907B (it) 1994-09-13

Family

ID=11399778

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM910050A IT1244907B (it) 1991-01-23 1991-01-23 Configurazione e tecnica di reti multimodali formatrici di fasci per antenne multifascio a riflettore.

Country Status (4)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2732163B1 (fr) * 1995-03-20 1997-05-30 Europ Agence Spatiale Dispositif d'alimentation d'une antenne multisources et multifaisceaux
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 (fr) * 1984-01-05 1986-05-30 Europ Agence Spatiale Repartiteur de puissance pour antenne a faisceaux multiples a elements sources partages
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
ATE207657T1 (de) 2001-11-15
EP0504552B1 (en) 2001-10-24
ITRM910050A1 (it) 1992-07-24
DE69232146T2 (de) 2002-07-11
DE69232146D1 (de) 2001-11-29
ITRM910050A0 (it) 1991-01-23
EP0504552A1 (en) 1992-09-23

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970117