EP0072316A1 - Antenne mit elektronischer Schwenkung und mehreren Eingängen und Radar mit einer solchen Antenne - Google Patents

Antenne mit elektronischer Schwenkung und mehreren Eingängen und Radar mit einer solchen Antenne Download PDF

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Publication number
EP0072316A1
EP0072316A1 EP82401461A EP82401461A EP0072316A1 EP 0072316 A1 EP0072316 A1 EP 0072316A1 EP 82401461 A EP82401461 A EP 82401461A EP 82401461 A EP82401461 A EP 82401461A EP 0072316 A1 EP0072316 A1 EP 0072316A1
Authority
EP
European Patent Office
Prior art keywords
antenna
auxiliary
main
elementary
antennas
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
EP82401461A
Other languages
English (en)
French (fr)
Other versions
EP0072316B1 (de
Inventor
Serge Drabowitch
Guy Leterrier
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.)
Thales SA
Original Assignee
Thomson CSF 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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to AT82401461T priority Critical patent/ATE29934T1/de
Publication of EP0072316A1 publication Critical patent/EP0072316A1/de
Application granted granted Critical
Publication of EP0072316B1 publication Critical patent/EP0072316B1/de
Expired legal-status Critical Current

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    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • 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
    • H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • H01Q3/2611—Means for null steering; Adaptive interference nulling
    • H01Q3/2629—Combination of a main antenna unit with an auxiliary antenna unit
    • H01Q3/2635—Combination of a main antenna unit with an auxiliary antenna unit the auxiliary unit being composed of a plurality of antennas
    • 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
    • H01Q3/2658—Phased-array fed focussing structure
    • 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
    • H01Q3/44—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 electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
    • H01Q3/46—Active lenses or reflecting arrays

Definitions

  • the present invention relates to a set of main and auxiliary antennas with electronic scanning and to a radar comprising such a set.
  • An antenna with electronic scanning consists, in a known manner, of radiating elementary sources and for each of them of a phase shift circuit whose phase angle can be adjusted using a control circuit. Changing the phase angles changes the pointing direction of the antenna.
  • auxiliary antennas When a radar is equipped with an anti-jamming device, a sufficient number of auxiliary antennas is generally used so that each of them is pointed in the direction of a jammer. In this case, the signals from these auxiliary antennas are mixed, after their amplitude and their phase have been suitably adapted, with those from the main antenna in order to cancel the signals from the different jammers.
  • This solution requires the use of a large and prohibitive number of auxiliary antennas equal to the number of jammers.
  • the present invention relates to a set of main and auxiliary antennas with electronic scanning having a reduced bulk.
  • Another object of the present invention is the production of a set of main and auxiliary directional antennas which can be used in combination with an anti-jamming device.
  • the set of main and auxiliary antennas for electronic scanning radar in which the main antenna comprises a set of radiating elementary sources, each associated with an adjustable phase shift circuit, the outputs of these phase shift circuits being focused or grouped according to a single polarization so as to constitute a main channel corresponding to the main beam and collected in a waveguide, is characterized in that the beam of each auxiliary antenna is formed by taking a part of the energy received by some or all of the elementary sources Sl ... Si ... Sn from the main antenna, via a coupler C "l ... C" i ...
  • the elementary radiating sources will be designated in particular by SI ... Si ..., Sn, these sources possibly being constituted for example by radiating beams as in FIG. 2, or dipoles as in FIG. 3.
  • auxiliary antenna To simplify the figures, only an auxiliary antenna has been shown, since the auxiliary beam is always formed according to the same principles by using part of the elementary energy received using a coupler.
  • Figure 1 shows an assembly consisting of an antenna main and an auxiliary antenna according to the invention.
  • the main antenna shown in this figure is an electronic scanning antenna on site formed by n elementary sources Sl ... Si ... Sn arranged on the focal line ⁇ of a cylindrical reflector 21 with parabolic director.
  • Each of the elementary sources Si is associated with an adjustable phase shift circuit (28) ⁇ i and a charged directional coupler Ci.
  • the auxiliary antenna also consists of n elementary antennas.
  • the elementary antenna of order 1 of the auxiliary antenna comprises a phase shifter circuit 29 whose phase angle ⁇ i is adjustable and a coupler. directive It's loaded.
  • the phase shifter circuit 29 of order i is supplied by a part of the energy received by the elementary source of the same order If from the main antenna, this energy being taken, before phase shift in the circuit 28, by a directional coupler C " i loaded, disposed between the source Si and the phase shift circuit 28 ⁇ i, of corresponding order i.
  • the energy of the beam from the main antenna is collected in a loaded waveguide 22 to which the elementary assemblies each formed by the association of a phase shifting circuit 28 and a directional coupler Ci, are connected through the couplers Ci.
  • the energy of the beam of the auxiliary antenna is collected in a loaded waveguide 23, to which the elementary assemblies each formed by the association of a directional coupler C "i, of a phase shifting circuit 29 and d a coupler C'i are connected via couplers C'i.
  • the load of the directional couplers Ci, C'i, C "i and the waveguides 22, 23 is designated respectively by 30 and 40.
  • FIG. 2 represents a variant of the embodiment of FIG. 1.
  • the electronic scanning antenna of Figure 2 differs from the embodiment of the figure in that the elementary sources SI ... Si ... Sn are constituted by a radiating assembly ensuring directly the focusing in bearing.
  • the radiating elements are constituted by p helices h il ... h ij ... h ip supplied by a espalier type system, by guided division, carried by a radiating beam Pi. It y an Pl ... Pi ... Pn beams arranged in parallel.
  • each of the radiating beams Pi is associated with a phase shifter 28 whose phase shift ⁇ i is adjustable and a directional coupler Ci loaded at 30.
  • a directional coupler C "i charged at 30 takes part of the elementary energy received by the main antenna, this elementary energy taken off then being applied to the input of an adjustable phase shift circuit 29 where it undergoes a phase shift fi before supplying, as in FIG. 1, a guide d wave 23, loaded at 40, via a directional coupler C'i loaded at 30.
  • the energy of the beam of the main antenna is, on reception, collected in a waveguide 22, loaded at the end 40, by means of the couplers Ci.
  • FIG. 3a represents a set of antennas of the lens type, with its two front 25 and rear 26 faces and comprising a main antenna and a single auxiliary antenna.
  • the front face 25 carries the elementary radiating sources Si, which are, in the embodiment represented by FIG. 3a, dipoles of the same polarization but which could be of another type, for example propellers, without departing from the scope of the present invention.
  • the main antenna comprises for each elementary radiating source Si, an adjustable phase shift circuit 28 disposed between the front face 25 and the rear face 26, and supplying a dipole of i disposed on the rear face 26 of the antenna.
  • the n dipoles of i have identical polarization.
  • a directional coupler C "i, charged at 30, takes part of the energy received by the source Si and feeds, via an adjustable phase shift circuit 29 tpi, a dipole d" i, also arranged on the rear face 26 .
  • the n dipoles of i have an identical polarization, crossed with that of the dipoles of i.
  • the dipoles of i and the dipoles of i lining the rear face 26 radiate the energy received on a primary collector, an embodiment of which is shown in FIG. 3b.
  • the respective outputs of these two primary sources radiate in cross polarization. This latter embodiment has not been shown.
  • phase angle ⁇ i of the circuits 29 is then modified so as to point the auxiliary antenna towards the next jammer.
  • the previous operation is then repeated and so on for all the jammers, this for each pointing direction of the main antenna.
  • a set of main and auxiliary antennas with electronic scanning has been produced in which the auxiliary antenna uses some or all of the elementary radiating sources of the main antenna.
  • the present invention is applicable to an electronic scanning radar equipped with an anti-jamming device.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)
  • Radar Systems Or Details Thereof (AREA)
EP82401461A 1981-08-07 1982-08-03 Antenne mit elektronischer Schwenkung und mehreren Eingängen und Radar mit einer solchen Antenne Expired EP0072316B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82401461T ATE29934T1 (de) 1981-08-07 1982-08-03 Antenne mit elektronischer schwenkung und mehreren eingaengen und radar mit einer solchen antenne.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8115362 1981-08-07
FR8115362A FR2511196A1 (fr) 1981-08-07 1981-08-07 Ensemble d'antennes principale et auxiliaires a balayage electronique et radar comportant un tel ensemble

Publications (2)

Publication Number Publication Date
EP0072316A1 true EP0072316A1 (de) 1983-02-16
EP0072316B1 EP0072316B1 (de) 1987-09-23

Family

ID=9261289

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82401461A Expired EP0072316B1 (de) 1981-08-07 1982-08-03 Antenne mit elektronischer Schwenkung und mehreren Eingängen und Radar mit einer solchen Antenne

Country Status (7)

Country Link
US (1) US4544925A (de)
EP (1) EP0072316B1 (de)
JP (1) JPS5838005A (de)
KR (1) KR840001394A (de)
AT (1) ATE29934T1 (de)
DE (1) DE3277394D1 (de)
FR (1) FR2511196A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560445A1 (fr) * 1984-02-24 1985-08-30 Thomson Csf Procede d'antibrouillage pour antenne reseau et antenne utilisant ledit procede

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135520B (en) * 1982-12-16 1986-06-25 Marconi Co Ltd Receivers and transmitters comprising a plurality of antenna elements
FR2632419B1 (fr) * 1983-11-08 1990-10-19 Thomson Csf Procede et dispositif d'antibrouillage pour radar et radar equipe d'un tel dispositif
JPS6155278U (de) * 1984-09-17 1986-04-14
JP2924376B2 (ja) * 1991-11-29 1999-07-26 日本電気株式会社 アンテナ装置
GB2517661B (en) * 1995-10-24 2016-03-30 Thomson Csf An anti-jamming antenna
US6266011B1 (en) 1999-09-30 2001-07-24 Rockwell Science Center, Llc Electronically scanned phased array antenna system and method with scan control independent of radiating frequency
FR2812457B1 (fr) 2000-07-28 2004-05-28 Thomson Csf Reflecteur hyperfrequence actif a bi-polarisation, notamment pour antenne a balalyage electronique
US8558734B1 (en) * 2009-07-22 2013-10-15 Gregory Hubert Piesinger Three dimensional radar antenna method and apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3763490A (en) * 1971-12-10 1973-10-02 Gen Electric Adaptive beamformer with time constant control
FR2177432A1 (de) * 1971-12-01 1973-11-09 Thomson Csf
US3987444A (en) * 1974-08-12 1976-10-19 Hazeltine Corporation Interference rejection system for multi-beam antenna having single control loop
US4017867A (en) * 1976-02-25 1977-04-12 Bell Telephone Laboratories, Incorporated Antenna assembly producing steerable beam and null
FR2331164A1 (fr) * 1975-11-04 1977-06-03 Thomson Csf Antenne a balayage electronique a plusieurs faisceaux
FR2396434A1 (fr) * 1977-07-01 1979-01-26 Thomson Csf Dispositif d'effacement des lobes secondaires d'une antenne du type " cassegrain a rotation de polarisation ", et systeme radar comportant un tel dispositif

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1051038A (de) * 1962-05-28
US3209355A (en) * 1962-12-20 1965-09-28 Radiation Inc Dual operating mode circuit
US3631503A (en) * 1969-05-02 1971-12-28 Hughes Aircraft Co High-performance distributionally integrated subarray antenna
US4041501A (en) * 1975-07-10 1977-08-09 Hazeltine Corporation Limited scan array antenna systems with sharp cutoff of element pattern
JPS5566114A (en) * 1978-11-13 1980-05-19 Nippon Telegr & Teleph Corp <Ntt> Signal compounding device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2177432A1 (de) * 1971-12-01 1973-11-09 Thomson Csf
US3763490A (en) * 1971-12-10 1973-10-02 Gen Electric Adaptive beamformer with time constant control
US3987444A (en) * 1974-08-12 1976-10-19 Hazeltine Corporation Interference rejection system for multi-beam antenna having single control loop
FR2331164A1 (fr) * 1975-11-04 1977-06-03 Thomson Csf Antenne a balayage electronique a plusieurs faisceaux
US4017867A (en) * 1976-02-25 1977-04-12 Bell Telephone Laboratories, Incorporated Antenna assembly producing steerable beam and null
FR2396434A1 (fr) * 1977-07-01 1979-01-26 Thomson Csf Dispositif d'effacement des lobes secondaires d'une antenne du type " cassegrain a rotation de polarisation ", et systeme radar comportant un tel dispositif

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
FREQUENZ, vol.26, no.4, 1972, Berlin (DE) *
WISSENSCHAFTLICHE BERICHTE AEG-TELEFUNKEN, vol.54, no.1/2, 1981, Frankfurt am Main (DE) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2560445A1 (fr) * 1984-02-24 1985-08-30 Thomson Csf Procede d'antibrouillage pour antenne reseau et antenne utilisant ledit procede
EP0156685A1 (de) * 1984-02-24 1985-10-02 Thomson-Csf Verfahren gegen Störungen für eine Antennengruppe und mit einem solchen Verfahren arbeitende Antenne

Also Published As

Publication number Publication date
FR2511196A1 (fr) 1983-02-11
KR840001394A (ko) 1984-04-30
FR2511196B1 (de) 1983-12-02
DE3277394D1 (en) 1987-10-29
JPS5838005A (ja) 1983-03-05
US4544925A (en) 1985-10-01
EP0072316B1 (de) 1987-09-23
ATE29934T1 (de) 1987-10-15

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