FR2925233B1 - VERY BROADBAND ACTIVE ANTENNA FOR PASSIVE RADAR. - Google Patents

VERY BROADBAND ACTIVE ANTENNA FOR PASSIVE RADAR.

Info

Publication number
FR2925233B1
FR2925233B1 FR0708834A FR0708834A FR2925233B1 FR 2925233 B1 FR2925233 B1 FR 2925233B1 FR 0708834 A FR0708834 A FR 0708834A FR 0708834 A FR0708834 A FR 0708834A FR 2925233 B1 FR2925233 B1 FR 2925233B1
Authority
FR
France
Prior art keywords
sub
band
antenna
low
vhf
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.)
Active
Application number
FR0708834A
Other languages
French (fr)
Other versions
FR2925233A1 (en
Inventor
Daniel Caer
Leon Dupont
Remi Grenouillet
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
Thales 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 Thales SA filed Critical Thales SA
Priority to FR0708834A priority Critical patent/FR2925233B1/en
Priority to PCT/EP2008/067630 priority patent/WO2009077529A2/en
Publication of FR2925233A1 publication Critical patent/FR2925233A1/en
Application granted granted Critical
Publication of FR2925233B1 publication Critical patent/FR2925233B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/26—Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/44—Resonant antennas with a plurality of divergent straight elements, e.g. V-dipole, X-antenna; with a plurality of elements having mutually inclined substantially straight portions

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Waveguide Aerials (AREA)

Abstract

La présente invention concerne le domaine des radars passifs VHF-UHF. Elle concerne plus particulièrement la réalisation d'antennes VHF-UHF omnidirectionnelles, à large bande passante, pouvant fonctionner en réseau sans altération de leurs diagrammes de rayonnement.L'invention consiste en une structure d'antenne bi-bande, fonctionnant sur deux sous-bandes de fréquences larges, constituée d'éléments rayonnants formant une sous-antenne à diffraction minimale fonctionnant dans la sous-bande haute, UHF, et une sous-antenne à diffraction minimale fonctionnant dans la sous-bande basse, VHF, chaque élément étant mis en service ou hors service séparément en fonction de la sous-bande exploitée. La sortie de l'antenne est reliée à l'entrée d'un amplificateur à faible bruit large bande, placé au plus près et présentant une entrée à haute impédance et une sortie égale à l'impédance de la ligne de transmission par laquelle il est relié au récepteur, la sous-antenne dédié à la sous-bande basse comportant des filtres passe bas agencés pour empêcher le fonctionnement de cet élément lorsque l'élément dédié à la sous-bande haute est en service.The present invention relates to the field of passive VHF-UHF radars. It relates more particularly to the production of omnidirectional VHF-UHF antennas, with wide bandwidth, able to operate in a network without altering their radiation patterns. The invention consists of a dual-band antenna structure, operating on two sub-networks. wide frequency bands, made up of radiating elements forming a minimally diffractive sub-antenna operating in the high sub-band, UHF, and a minimally diffractive sub-antenna operating in the low sub-band, VHF, each element being placed in service or out of service separately according to the exploited sub-band. The output of the antenna is connected to the input of a low noise broadband amplifier, placed as close as possible and having a high impedance input and an output equal to the impedance of the transmission line through which it is connected to the receiver, the sub-antenna dedicated to the low sub-band comprising low-pass filters arranged to prevent the operation of this element when the element dedicated to the high sub-band is in service.

FR0708834A 2007-12-18 2007-12-18 VERY BROADBAND ACTIVE ANTENNA FOR PASSIVE RADAR. Active FR2925233B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0708834A FR2925233B1 (en) 2007-12-18 2007-12-18 VERY BROADBAND ACTIVE ANTENNA FOR PASSIVE RADAR.
PCT/EP2008/067630 WO2009077529A2 (en) 2007-12-18 2008-12-16 Very wide band active antenna for passive radar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0708834A FR2925233B1 (en) 2007-12-18 2007-12-18 VERY BROADBAND ACTIVE ANTENNA FOR PASSIVE RADAR.

Publications (2)

Publication Number Publication Date
FR2925233A1 FR2925233A1 (en) 2009-06-19
FR2925233B1 true FR2925233B1 (en) 2012-04-20

Family

ID=39590306

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0708834A Active FR2925233B1 (en) 2007-12-18 2007-12-18 VERY BROADBAND ACTIVE ANTENNA FOR PASSIVE RADAR.

Country Status (2)

Country Link
FR (1) FR2925233B1 (en)
WO (1) WO2009077529A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108172990A (en) * 2017-12-13 2018-06-15 西安电子科技大学 A kind of compact-type high-gain omnidirectional circular-polarized antenna

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8345639B2 (en) 2010-06-14 2013-01-01 Raytheon Company Broad propagation pattern antenna
CN103119784B (en) * 2010-09-17 2015-09-23 黑莓有限公司 For the compact irradiation structure of diversity antenna
RU2727793C1 (en) * 2019-07-15 2020-07-24 Акционерное общество "Концерн радиостроения "Вега" Ultra-wideband multifrequency radar with active phased antenna array and reduced level of side lobes in compressed signal

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2282292A (en) * 1937-07-10 1942-05-05 Ernest V Amy All wave radio receiving system
GB1307648A (en) * 1971-06-17 1973-02-21 Fte Maximal Fernsehtech Circular multi-range receiving aerial assembly
DE2824686A1 (en) * 1978-06-06 1979-12-13 Fte Maximal Fernsehtech Omnidirectional receiver antenna for VHF and UHF TV ranges - has turnstile antenna for VHF and triple dipole for UHF and amplifier for whole frequency range
FR2676311B1 (en) * 1991-05-07 1993-11-19 Agence Spatiale Europeenne CIRCULAR POLARIZATION ANTENNA.
DE10304911B4 (en) * 2003-02-06 2014-10-09 Heinz Lindenmeier Combination antenna arrangement for multiple radio services for vehicles
JP4184941B2 (en) * 2003-12-12 2008-11-19 Ｄｘアンテナ株式会社 Multi-frequency band antenna

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108172990A (en) * 2017-12-13 2018-06-15 西安电子科技大学 A kind of compact-type high-gain omnidirectional circular-polarized antenna

Also Published As

Publication number Publication date
WO2009077529A3 (en) 2010-04-08
WO2009077529A2 (en) 2009-06-25
FR2925233A1 (en) 2009-06-19

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