EP0115983A3 - Spatial filter for circularly polarized microwaves and cassegrain antenna using such a filter - Google Patents

Spatial filter for circularly polarized microwaves and cassegrain antenna using such a filter Download PDF

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Publication number
EP0115983A3
EP0115983A3 EP84400149A EP84400149A EP0115983A3 EP 0115983 A3 EP0115983 A3 EP 0115983A3 EP 84400149 A EP84400149 A EP 84400149A EP 84400149 A EP84400149 A EP 84400149A EP 0115983 A3 EP0115983 A3 EP 0115983A3
Authority
EP
European Patent Office
Prior art keywords
filter
circularly polarized
spatial filter
cassegrain antenna
polarized microwaves
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.)
Withdrawn
Application number
EP84400149A
Other languages
German (de)
French (fr)
Other versions
EP0115983A2 (en
Inventor
François Gautier
Patrice Bossuet
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
Publication of EP0115983A2 publication Critical patent/EP0115983A2/en
Publication of EP0115983A3 publication Critical patent/EP0115983A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
    • H01Q19/19—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
    • H01Q19/195—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface wherein a reflecting surface acts also as a polarisation filter or a polarising device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
    • H01Q15/12—Refracting or diffracting devices, e.g. lens, prism functioning also as polarisation filter

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

Filtre spatial d'ondes électromagnétiques de polarisation circulaire comprenant trois réseaux conducteurs parallèles (15, 16 et 17), le réseau central (16) étant totalement réfléchis­ sant pour une polarisation rectiligne de direction donnée et pré­ sentant un coefficient de réflexion non nul pour une polarisa­ tion rectiligne de direction perpendiculaire à la précédente. Spatial filter of electromagnetic polarization waves circular comprising three parallel conductive networks (15, 16 and 17), the central network (16) being completely reflected health for a rectilinear polarization of given direction and pre feeling a nonzero reflection coefficient for a polarized tion rectilinear direction perpendicular to the previous one.

Utilisation dans une antenne du type Cassegrain. Use in a Cassegrain type antenna.

EP84400149A 1983-01-31 1984-01-24 Spatial filter for circularly polarized microwaves and cassegrain antenna using such a filter Withdrawn EP0115983A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8301451 1983-01-31
FR8301451A FR2540296A1 (en) 1983-01-31 1983-01-31 SPATIAL CIRCULAR POLARIZING ELECTROMAGNETIC WAVE FILTER AND CASSEGRAIN ANTENNA COMPRISING SUCH A FILTER

Publications (2)

Publication Number Publication Date
EP0115983A2 EP0115983A2 (en) 1984-08-15
EP0115983A3 true EP0115983A3 (en) 1984-12-27

Family

ID=9285437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84400149A Withdrawn EP0115983A3 (en) 1983-01-31 1984-01-24 Spatial filter for circularly polarized microwaves and cassegrain antenna using such a filter

Country Status (3)

Country Link
US (2) US4652891A (en)
EP (1) EP0115983A3 (en)
FR (1) FR2540296A1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4698639A (en) * 1986-01-14 1987-10-06 The Singer Company Circularly polarized leaky waveguide doppler antenna
US4743919A (en) * 1986-10-07 1988-05-10 Hughes Aircraft Company Microwave frequency selective surface having fibrous ceramic body
US4831384A (en) * 1988-05-31 1989-05-16 Tecom Industries Incorporated Polarization-sensitive receiver for microwave signals
US4995008A (en) * 1989-12-27 1991-02-19 Exxon Production Research Company Method of using a circularly-polarized source to characterize seismic anisotropy
IT1240572B (en) * 1990-11-15 1993-12-17 Aeritalia Spa POLARIZATION DISCRIMINATOR DEVICE FOR CIRCULAR POLARIZATION ELECTROMAGNETIC WAVES AND DICHROIC SIPERPHICS INCLUDING A PLURALITY OF SUCH DEVICES
US5170169A (en) * 1991-05-31 1992-12-08 Millitech Corporation Quasi-optical transmission/reflection switch and millimeter-wave imaging system using the same
JPH0744380B2 (en) * 1991-12-13 1995-05-15 松下電工株式会社 Planar antenna
US6473051B2 (en) * 2001-03-13 2002-10-29 Raytheon Company Elliptic to circular polarization converter and test apparatus incorporating the same for accommodating large axial ratio
ATE331314T1 (en) * 2001-03-22 2006-07-15 Cit Alcatel DOUBLE REFLECTOR ANTENNA WITH DEFLECTOR
WO2003063288A1 (en) * 2002-01-17 2003-07-31 Mission Research Corporation Electromagnetic-field polarization twister
TW200735458A (en) * 2006-03-14 2007-09-16 Mitac Technology Corp Built-in antenna structure
US7564419B1 (en) * 2006-04-14 2009-07-21 Lockheed Martin Corporation Wideband composite polarizer and antenna system
US7773292B2 (en) * 2006-09-06 2010-08-10 Raytheon Company Variable cross-coupling partial reflector and method
US8487824B1 (en) * 2010-09-13 2013-07-16 The United States Of America As Represented By The Secretary Of The Navy Zero degree grid antenna
US9722319B2 (en) * 2011-10-27 2017-08-01 Kuang-Chi Innovative Technology Ltd. Metamaterial antenna
US10224637B2 (en) 2012-07-09 2019-03-05 Jasmin ROY Reciprocal circular polarization selective surfaces and elements thereof
CA2820158C (en) 2012-07-09 2017-11-28 Jasmin Roy Reciprocal circular polarization selective surfaces and elements thereof
FR3044431B1 (en) * 2015-11-27 2018-01-05 Stmicroelectronics Sa PLASMON FILTER

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1307590A (en) * 1960-12-27 1962-10-26 Western Electric Co Antenna device
US3271771A (en) * 1962-02-15 1966-09-06 Hazeltine Research Inc Double-reflector, double-feed antenna for crossed polarizations and polarization changing devices useful therein
US3340535A (en) * 1964-06-16 1967-09-05 Textron Inc Circular polarization cassegrain antenna
FR2061510A1 (en) * 1969-02-28 1971-06-25 Thomson Csf
FR2098372A1 (en) * 1970-07-13 1972-03-10 British Aircraft Corp Ltd
FR2281660A1 (en) * 1974-08-09 1976-03-05 Thomson Csf DEVICE EQUIPPED WITH A FILTER GRID

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2382109A1 (en) * 1977-02-25 1978-09-22 Thomson Csf HYPERFREQUENCY POLARIZATION TRANSFORMER
FR2450509A1 (en) * 1979-03-02 1980-09-26 Thomson Csf POLARIZER DEVICE FOR MICROWAVE ANTENNA
DE3023562C2 (en) * 1980-06-24 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Device for polarization conversion of electromagnetic waves
DE3027094C2 (en) * 1980-07-17 1987-03-19 Siemens AG, 1000 Berlin und 8000 München Repolarization device for generating circularly polarized electromagnetic waves

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1307590A (en) * 1960-12-27 1962-10-26 Western Electric Co Antenna device
US3271771A (en) * 1962-02-15 1966-09-06 Hazeltine Research Inc Double-reflector, double-feed antenna for crossed polarizations and polarization changing devices useful therein
US3340535A (en) * 1964-06-16 1967-09-05 Textron Inc Circular polarization cassegrain antenna
FR2061510A1 (en) * 1969-02-28 1971-06-25 Thomson Csf
FR2098372A1 (en) * 1970-07-13 1972-03-10 British Aircraft Corp Ltd
FR2281660A1 (en) * 1974-08-09 1976-03-05 Thomson Csf DEVICE EQUIPPED WITH A FILTER GRID

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ELECTRONICS AND COMMUNICATIONS IN JAPAN, volume 62, no. 9, septembre 1979 (SILVER SPRING, US) R. WATANABE et al.: "Quasi-optical diplexer using two-Fabry-Perot resonators", pages 78-87 *
PROCEEDINGS OF THE IEE, volume 120, no. 4, avril 1973, (STEVENAGE, GB) N. HILL et al.: "Microwave transmission through a series of inclined gratings", pages 407-412 *

Also Published As

Publication number Publication date
US4728961A (en) 1988-03-01
US4652891A (en) 1987-03-24
FR2540296A1 (en) 1984-08-03
EP0115983A2 (en) 1984-08-15
FR2540296B1 (en) 1985-04-05

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Legal Events

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

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AK Designated contracting states

Designated state(s): DE GB

PUAL Search report despatched

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Designated state(s): DE GB

17P Request for examination filed

Effective date: 19850107

17Q First examination report despatched

Effective date: 19860808

D17Q First examination report despatched (deleted)
STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19880803

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GAUTIER, FRANCOIS

Inventor name: BOSSUET, PATRICE