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
Links
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
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.
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)
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)
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)
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 |
-
2007
- 2007-12-18 FR FR0708834A patent/FR2925233B1/en active Active
-
2008
- 2008-12-16 WO PCT/EP2008/067630 patent/WO2009077529A2/en active Application Filing
Cited By (1)
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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