EP0488101A1 - Mehrstrahlantenne mit wählbarer Konfiguration - Google Patents

Mehrstrahlantenne mit wählbarer Konfiguration Download PDF

Info

Publication number
EP0488101A1
EP0488101A1 EP91120044A EP91120044A EP0488101A1 EP 0488101 A1 EP0488101 A1 EP 0488101A1 EP 91120044 A EP91120044 A EP 91120044A EP 91120044 A EP91120044 A EP 91120044A EP 0488101 A1 EP0488101 A1 EP 0488101A1
Authority
EP
European Patent Office
Prior art keywords
sources
spot
generalized
antenna according
couplers
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.)
Granted
Application number
EP91120044A
Other languages
English (en)
French (fr)
Other versions
EP0488101B1 (de
Inventor
Régis Lenormand
Didier René
Christian Rigal
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.)
Alcatel Espace Industries SA
Original Assignee
Alcatel Espace Industries SA
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 Alcatel Espace Industries SA filed Critical Alcatel Espace Industries SA
Publication of EP0488101A1 publication Critical patent/EP0488101A1/de
Application granted granted Critical
Publication of EP0488101B1 publication Critical patent/EP0488101B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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

Definitions

  • the invention relates to a reconfigurable transmit multi-access and multispot antenna.
  • the object of the present invention is to offer the flexibility of traffic exchange and reconfiguration, necessary for the missions mentioned, without having the disadvantages of the previous solutions.
  • Each spot being made up of the juxtaposition of the beams of n sources (for example 3), each of these sources and all the associated connectors support the power transmitted by the spot divided by n.
  • the antenna of the known art represented in FIG. 1 comprises an eccentric parabolic reflector 10 illuminated by a planar network 11 of sources located in the vicinity of the focal point F of the reflector, the network 12 representing a network of virtual sources, corresponding to this planar network 11.
  • this antenna we play only on the phase of each elementary source; which makes it possible to achieve the optimal synthesis of each elementary source as if it were at the focus F of the reflector.
  • Such an operation makes it possible to produce an antenna whose gain does not depend on the pointing direction, while keeping the reflector 10 and the array 11 of elementary sources fixed.
  • FIG. 2 is shown a spot at two successive instants, ie SP1 and SP1 ', by conserving for example a source S13 common to these two spots.
  • E signal be the signal at the first input of the subsystem.
  • This signal E1 is amplified with an amplification gain controllable by the variable gain amplifier 18.
  • This amplified signal is divided into three components E11, E12, E13, of equal amplitude, in the divider 26.
  • Each of these three components E11, E12, E13 is routed respectively to one of the three inputs e11, e12, e13 of three blocks 20 of high power amplification.
  • the components E12 and E13 are amplified and routed to the outputs S12 and S13.
  • the signals E11, E12 and E13 are routed to the radiating elements S11, S21, S32 respectively through switching matrices 24.
  • the radiation by these sources S11, S21, and S32 of the signals E1, E2 and E3 constitutes the coverage SP1 by the three elementary spots sp11, sp21, sp32.
  • the radiation area of the antenna ie the coverage SP1
  • the radiation area of the antenna can be modified into an area corresponding to the coverage SP1 '(sp12, sp21, sp31 ) by switching the sources respectively (S11, S32 to S12, S31)
  • This switching corresponds to a reconfiguration of two switching matrices 24; The last matrix is not reconfigured.
  • This antenna reconfiguration does not affect the operation of the amplifiers 23.
  • the restriction for this second signal is that it does not use the radiation sources used for the first signal.
  • this amplifier stage system 20 with two inputs is compatible with two signals radiated simultaneously if and only if the sources used by these two signals at a given instant are distinct.
  • the amplification stage 20 comprises a first and a second generalized couplers 21 and 22, respectively formed of a combination of hybrid couplers, on either side of amplifiers 23 so that each input of the first coupler 21 is distributed over all the amplifiers 23.
  • a signal applied to the first input for example, amplified spring on the first output. So if a signal is applied to one of the inputs of a stage (of rank i for example), at the corresponding output (of rank i) the signal will be amplified by all the amplifiers and no other output will receive a signal at a significant level.
  • the power amplifiers 23 receive on their respective inputs a signal coming from each beam, at an almost identical level.
  • a nearly uniform charge distribution is obtained over all the inputs of the amplifiers 23.
  • the signals are then reconstituted. using the second generalized coupler 22 which has an inverse structure to that of the first.
  • the amplifiers 23 thus have a constant input power and can therefore operate at their nominal capacity.
  • the number p of sources S ij corresponding to a channel Vi can be equal to or greater than the number m of outputs of the amplifier stage 20.
  • each amplifier output is divided to supply the second couplers 22.
  • the power handling of the high power stages is respected .
  • a spot Ei access SPi of the input coupler corresponds to n antenna access.
  • the radiation of the beam corresponding to this spot SPi is obtained by the connection through the circuit 24 corresponding to a switching matrix of each of these n accesses to the n sources of the primary network corresponding to the coverage to be produced.
  • a reconfiguration of coverage for this spot is therefore obtained by switching one, two .... or n sources: In FIG. 2 for example, with n equal to three the passage in two successive instants from spot SP1 to spot SP1 ' requiring the switching of two sources.
  • An advantage of such a system is to ensure an optimum exchange of capacity: Namely that the sum of the powers distributed in the spots, whatever the relative distribution ratios, is equal to the maximum available power.
  • the solution adopted is to superimpose the main radiation of the sources on the radiation of at least one additional source S 'of insulation as shown in FIG. 4.
  • Such sources S' have a position in the network, such that their radiation can act predominantly in the area to be isolated. Isolation is thus ensured by using a cancellation source S 'external to the sources of the switched network.
  • the amplitude (27) and the phase (28) of the latter are adjusted to obtain energy in phase opposition and of the same amplitude as that to be canceled.
  • the relative main source / insulation source level is generally less than 12 dB, which makes it possible to derive a small part of the energy of the beam concerned before the amplifier stage; fine adjustment of amplitude and phase being provided by the phase shifter 2B and the variable attenuator 27.
EP19910120044 1990-11-29 1991-11-25 Mehrstrahlantenne mit wählbarer Konfiguration Expired - Lifetime EP0488101B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9014941A FR2670052B1 (fr) 1990-11-29 1990-11-29 Antenne emission reconfigurable.
FR9014941 1990-11-29

Publications (2)

Publication Number Publication Date
EP0488101A1 true EP0488101A1 (de) 1992-06-03
EP0488101B1 EP0488101B1 (de) 1996-03-13

Family

ID=9402723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910120044 Expired - Lifetime EP0488101B1 (de) 1990-11-29 1991-11-25 Mehrstrahlantenne mit wählbarer Konfiguration

Country Status (5)

Country Link
EP (1) EP0488101B1 (de)
JP (1) JPH04291503A (de)
CA (1) CA2056774A1 (de)
DE (1) DE69117888T2 (de)
FR (1) FR2670052B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0546812A1 (de) * 1991-12-10 1993-06-16 Texas Instruments Incorporated Einem Flugkörper angepasste Anordnung mehrerer Antennen zur Peilung mit grossem Gesichtsfeld
FR2729505A1 (fr) * 1995-01-18 1996-07-19 Alcatel Espace Antenne multifaisceaux forte capacite a balayage electronique en emission
EP1184940A2 (de) * 2000-08-17 2002-03-06 TRW Inc. Gruppenantennen mit indirekten Strahlungstechniken

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2368836A1 (fr) * 1976-10-22 1978-05-19 Matra Dispositif de transmission radio-electrique hyperfrequence a faisceaux multiples commutables
DE2813916B2 (de) * 1978-03-31 1980-10-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen Richtantennenanordnung mit elektronisch steuerbarer Strahlschwenkung
EP0333166A1 (de) * 1988-03-18 1989-09-20 Alcatel Espace Elektronisch wiederkonfigurierbare Sendeantenne
EP0420739A1 (de) * 1989-09-26 1991-04-03 Agence Spatiale Europeenne Speiseeinrichtung für eine Mehrkeulenantenne

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2368836A1 (fr) * 1976-10-22 1978-05-19 Matra Dispositif de transmission radio-electrique hyperfrequence a faisceaux multiples commutables
DE2813916B2 (de) * 1978-03-31 1980-10-02 Siemens Ag, 1000 Berlin Und 8000 Muenchen Richtantennenanordnung mit elektronisch steuerbarer Strahlschwenkung
EP0333166A1 (de) * 1988-03-18 1989-09-20 Alcatel Espace Elektronisch wiederkonfigurierbare Sendeantenne
EP0420739A1 (de) * 1989-09-26 1991-04-03 Agence Spatiale Europeenne Speiseeinrichtung für eine Mehrkeulenantenne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ELECTRONIC ENGINEERING vol. 61, no. 748, avril 1989, pages S22-S27, London, GB; F. RISPOLI: "Reconfigurable satellite antennas: a review" *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0546812A1 (de) * 1991-12-10 1993-06-16 Texas Instruments Incorporated Einem Flugkörper angepasste Anordnung mehrerer Antennen zur Peilung mit grossem Gesichtsfeld
FR2729505A1 (fr) * 1995-01-18 1996-07-19 Alcatel Espace Antenne multifaisceaux forte capacite a balayage electronique en emission
EP0723308A1 (de) * 1995-01-18 1996-07-24 Alcatel Espace Mehrkeulenantenne von hoher Kapazität mit elektronisch gesteuertem Abtasten beim Senden
US5734349A (en) * 1995-01-18 1998-03-31 Alcatel Espace High capacity multibeam antenna with electronic scanning in transmission
EP1184940A2 (de) * 2000-08-17 2002-03-06 TRW Inc. Gruppenantennen mit indirekten Strahlungstechniken
EP1184940A3 (de) * 2000-08-17 2004-01-28 Northrop Grumman Corporation Gruppenantennen mit indirekten Strahlungstechniken

Also Published As

Publication number Publication date
FR2670052A1 (fr) 1992-06-05
CA2056774A1 (fr) 1992-05-30
EP0488101B1 (de) 1996-03-13
FR2670052B1 (fr) 1993-07-30
DE69117888D1 (de) 1996-04-18
JPH04291503A (ja) 1992-10-15
DE69117888T2 (de) 1996-07-25

Similar Documents

Publication Publication Date Title
EP0420739B1 (de) Speiseeinrichtung für eine Mehrkeulenantenne
CA1298650C (fr) Antenne a reconfiguration electronique en emission
EP0723308B1 (de) Mehrkeulenantenne von hoher Kapazität mit elektronisch gesteuertem Abtasten beim Senden
US7649495B2 (en) Wavelength division multiplexing methods and apparatus for constructing photonic beamforming networks
EP0368121B1 (de) Antenne mit elektronisch gesteuerter Ablenkung
CA1298651C (fr) Antenne a balayage electronique
EP0734093B1 (de) Vorrichtung zur Speisung einer Mehrstrahl-Gruppenantenne
US5289193A (en) Reconfigurable transmission antenna
EP1170823B1 (de) Telekommunikationsantenne mit grossem Erdabdekkungsbereich
EP0488101B1 (de) Mehrstrahlantenne mit wählbarer Konfiguration
FR3098024A1 (fr) Formateur analogique multifaisceaux bidimensionnel de complexité réduite pour antennes réseaux actives reconfigurables
CA2027183C (fr) Antenne a balayage electronique en emission
EP1104124B1 (de) Leitweglenkung in einem Satelliten Kommunikationssystem
EP2822192A1 (de) System zur Erzeugung von simultanen, in mehrere Richtungen gehenden Richtungsstrahlen
EP0417679B1 (de) Durch niedrige Schaltrate steuerbare Mehrkeulenantenne
FR2533763A1 (fr) Systeme d'antenne a faisceaux modeles, avec possibilite de modification de la configuration des faisceaux
EP3754866A1 (de) Nutzlast von telekommunikationsmitteln mit flexibler netzabdeckung und -kapazität
FR2952759A1 (fr) Antenne a reflecteurs et reseau focal

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT SE

17P Request for examination filed

Effective date: 19921124

17Q First examination report despatched

Effective date: 19940912

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

REF Corresponds to:

Ref document number: 69117888

Country of ref document: DE

Date of ref document: 19960418

ITF It: translation for a ep patent filed

Owner name: JACOBACCI & PERANI S.P.A.

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960613

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960529

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19981012

Year of fee payment: 8

Ref country code: FR

Payment date: 19981012

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19981022

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991125

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19991125

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051125