CH545542A - - Google Patents

Info

Publication number
CH545542A
CH545542A CH581873A CH545542DA CH545542A CH 545542 A CH545542 A CH 545542A CH 581873 A CH581873 A CH 581873A CH 545542D A CH545542D A CH 545542DA CH 545542 A CH545542 A CH 545542A
Authority
CH
Switzerland
Application number
CH581873A
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 filed Critical
Publication of CH545542A publication Critical patent/CH545542A/xx

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
    • 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
    • H01Q15/24—Polarising devices; Polarisation filters 
    • 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
CH581873A 1972-04-24 1973-04-24 CH545542A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE05357/72A SE356641B (xx) 1972-04-24 1972-04-24

Publications (1)

Publication Number Publication Date
CH545542A true CH545542A (xx) 1974-01-31

Family

ID=20266295

Family Applications (1)

Application Number Title Priority Date Filing Date
CH581873A CH545542A (xx) 1972-04-24 1973-04-24

Country Status (6)

Country Link
US (1) US3820116A (xx)
CH (1) CH545542A (xx)
FR (1) FR2181959B1 (xx)
GB (1) GB1374567A (xx)
NL (1) NL178378C (xx)
SE (1) SE356641B (xx)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2450509A1 (fr) * 1979-03-02 1980-09-26 Thomson Csf Dispositif polariseur pour antenne microonde
FR2451114A1 (fr) * 1979-03-09 1980-10-03 Thomson Csf Antenne a plans paralleles a rotation de polarisation
US4343000A (en) * 1981-04-06 1982-08-03 The United States Of America As Represented By The Secretary Of The Navy Aircraft self-protection radar
US4977407A (en) * 1981-07-23 1990-12-11 Crane Patrick E Optical collimator
GB2110003B (en) * 1981-11-19 1985-03-13 Marconi Co Ltd Antenna assemblies
US4574287A (en) * 1983-03-04 1986-03-04 The United States Of America As Represented By The Secretary Of The Navy Fixed aperture, rotating feed, beam scanning antenna system
FR2557737B1 (fr) * 1983-12-30 1987-12-18 Thomson Csf Antenne a deux reflecteurs cylindro-paraboliques croises et son procede de fabrication
US5455589A (en) * 1994-01-07 1995-10-03 Millitech Corporation Compact microwave and millimeter wave radar
US5883602A (en) * 1996-06-05 1999-03-16 Apti, Inc. Wideband flat short foci lens antenna

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2907033A (en) * 1956-10-19 1959-09-29 Gabriel Co Wave-guide antenna
FR1264818A (fr) * 1959-08-10 1961-06-23 Gen Electric Co Ltd Perfectionnements apportés aux antennes passives
FR1307590A (fr) * 1960-12-27 1962-10-26 Western Electric Co Dispositif d'antenne
FR1508062A (fr) * 1965-04-12 1968-01-05 Csf Antennes aplanétiques
GB1181060A (en) * 1966-01-31 1970-02-11 Mini Of Technology Improvements in or relating to Horn Aerials
GB1179392A (en) * 1966-01-31 1970-01-28 Mini Of Technology Improvements in or relating to Horn Aerials

Also Published As

Publication number Publication date
FR2181959B1 (xx) 1977-02-11
FR2181959A1 (xx) 1973-12-07
US3820116A (en) 1974-06-25
NL178378B (nl) 1985-10-01
NL7305576A (xx) 1973-10-26
NL178378C (nl) 1986-03-03
SE356641B (xx) 1973-05-28
GB1374567A (en) 1974-11-20

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Legal Events

Date Code Title Description
PL Patent ceased