GR77613B - - Google Patents

Info

Publication number
GR77613B
GR77613B GR56370A GR780156370A GR77613B GR 77613 B GR77613 B GR 77613B GR 56370 A GR56370 A GR 56370A GR 780156370 A GR780156370 A GR 780156370A GR 77613 B GR77613 B GR 77613B
Authority
GR
Greece
Application number
GR56370A
Original Assignee
Raytheon Co
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 Raytheon Co filed Critical Raytheon Co
Publication of GR77613B publication Critical patent/GR77613B/el

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing 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
    • H01Q15/24—Polarising devices; Polarisation filters 
    • H01Q15/242—Polarisation converters
    • H01Q15/244—Polarisation converters converting a linear polarised wave into a circular polarised wave
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/007—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device
    • H01Q25/008—Antennas or antenna systems providing at least two radiating patterns using two or more primary active elements in the focal region of a focusing device lens fed multibeam arrays
GR56370A 1977-05-31 1978-05-29 GR77613B (el)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/801,974 US4127857A (en) 1977-05-31 1977-05-31 Radio frequency antenna with combined lens and polarizer

Publications (1)

Publication Number Publication Date
GR77613B true GR77613B (el) 1984-09-25

Family

ID=25182497

Family Applications (1)

Application Number Title Priority Date Filing Date
GR56370A GR77613B (el) 1977-05-31 1978-05-29

Country Status (10)

Country Link
US (1) US4127857A (el)
JP (1) JPS53148945A (el)
AU (1) AU511500B2 (el)
DE (1) DE2821781A1 (el)
DK (1) DK237778A (el)
FR (1) FR2393440A1 (el)
GB (1) GB1573481A (el)
GR (1) GR77613B (el)
IL (1) IL54537A (el)
IT (1) IT1102849B (el)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4209791A (en) * 1978-10-05 1980-06-24 Anaren Microwave, Incorporated Antenna apparatus for bearing angle determination
US4222054A (en) * 1978-10-30 1980-09-09 Raytheon Company Radio frequency lens
SE420965B (sv) * 1979-02-06 1981-11-09 Philips Svenska Ab Linsantenn
DE3027094C2 (de) * 1980-07-17 1987-03-19 Siemens AG, 1000 Berlin und 8000 München Umpolarisiereinrichtung zur Erzeugung zirkular polarisierter elektromagnetischer Wellen
US4342034A (en) * 1980-11-24 1982-07-27 Raytheon Company Radio frequency antenna with polarization changer and filter
DE3122016A1 (de) * 1981-06-03 1982-12-23 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Antennensystem
US4786914A (en) * 1985-01-25 1988-11-22 E-Systems, Inc. Meanderline polarization twister
US5406298A (en) * 1985-04-01 1995-04-11 The United States Of America As Represented By The Secretary Of The Navy Small wideband passive/active antenna
US4973213A (en) * 1989-09-21 1990-11-27 Kelley Company Inc. Truck actuated vehicle restraint having a pivotable inclined surface
US4938647A (en) * 1989-09-21 1990-07-03 Kelley Company Inc. Truck actuated vehicle restraint having a pivotable slide
US5134420A (en) * 1990-05-07 1992-07-28 Hughes Aircraft Company Bicone antenna with hemispherical beam
US5455589A (en) * 1994-01-07 1995-10-03 Millitech Corporation Compact microwave and millimeter wave radar
DE102008001467A1 (de) * 2008-04-30 2009-11-05 Robert Bosch Gmbh Mehrstrahlradarsensor
US8648768B2 (en) 2011-01-31 2014-02-11 Ball Aerospace & Technologies Corp. Conical switched beam antenna method and apparatus
US9379437B1 (en) 2011-01-31 2016-06-28 Ball Aerospace & Technologies Corp. Continuous horn circular array antenna system
GB2509112B (en) * 2012-12-20 2016-07-06 Canon Kk Antenna system
US9397407B2 (en) 2012-12-20 2016-07-19 Canon Kabushiki Kaisha Antenna system
US10177464B2 (en) 2016-05-18 2019-01-08 Ball Aerospace & Technologies Corp. Communications antenna with dual polarization
EP3816117A1 (en) 2019-10-31 2021-05-05 Canon Kabushiki Kaisha Ultrafine bubble-containing liquid producing apparatus and ultrafine bubble-containing liquid producing method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978702A (en) * 1957-07-31 1961-04-04 Arf Products Antenna polarizer having two phase shifting medium
FR1586812A (el) * 1967-03-23 1970-03-06
US3560984A (en) * 1968-12-11 1971-02-02 Loral Corp Broadband circularly polarized antenna having a continuous rectangular aperture
US3697998A (en) * 1970-10-05 1972-10-10 Sperry Rand Corp Multiple beam array antenna
US3761936A (en) * 1971-05-11 1973-09-25 Raytheon Co Multi-beam array antenna
US3754270A (en) * 1972-03-24 1973-08-21 Raytheon Co Omnidirectional multibeam array antenna
US3754271A (en) * 1972-07-03 1973-08-21 Gte Sylvania Inc Broadband antenna polarizer
US3964069A (en) * 1975-05-01 1976-06-15 Raytheon Company Constant beamwidth antenna

Also Published As

Publication number Publication date
IT7849288A0 (it) 1978-05-10
FR2393440B1 (el) 1983-04-01
JPS614201B2 (el) 1986-02-07
DK237778A (da) 1978-12-01
DE2821781A1 (de) 1978-12-14
JPS53148945A (en) 1978-12-26
AU511500B2 (en) 1980-08-21
US4127857A (en) 1978-11-28
AU3536078A (en) 1979-10-25
IL54537A (en) 1981-03-31
FR2393440A1 (fr) 1978-12-29
GB1573481A (en) 1980-08-28
IT1102849B (it) 1985-10-07

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