IT7949493A0 - Perfezionamento nei sistemi d'antenna a scansione circolare - Google Patents

Perfezionamento nei sistemi d'antenna a scansione circolare

Info

Publication number
IT7949493A0
IT7949493A0 IT7949493A IT4949379A IT7949493A0 IT 7949493 A0 IT7949493 A0 IT 7949493A0 IT 7949493 A IT7949493 A IT 7949493A IT 4949379 A IT4949379 A IT 4949379A IT 7949493 A0 IT7949493 A0 IT 7949493A0
Authority
IT
Italy
Prior art keywords
improvement
antenna systems
scanning antenna
circular scanning
circular
Prior art date
Application number
IT7949493A
Other languages
English (en)
Other versions
IT1162476B (it
Original Assignee
Sperry Rand Corp
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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of IT7949493A0 publication Critical patent/IT7949493A0/it
Application granted granted Critical
Publication of IT1162476B publication Critical patent/IT1162476B/it

Links

Classifications

    • 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
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/14—Reflecting surfaces; Equivalent structures
    • H01Q15/22—Reflecting surfaces; Equivalent structures functioning also as polarisation filter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H01Q3/16—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
    • H01Q3/18—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is movable and the reflecting device is fixed

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Aerials With Secondary Devices (AREA)
IT49493/79A 1978-06-22 1979-06-21 Perfezionamento nei sistemi d'antenna a scansione circolare IT1162476B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/918,182 US4214248A (en) 1978-06-22 1978-06-22 Transreflector scanning antenna

Publications (2)

Publication Number Publication Date
IT7949493A0 true IT7949493A0 (it) 1979-06-21
IT1162476B IT1162476B (it) 1987-04-01

Family

ID=25439937

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49493/79A IT1162476B (it) 1978-06-22 1979-06-21 Perfezionamento nei sistemi d'antenna a scansione circolare

Country Status (9)

Country Link
US (1) US4214248A (it)
JP (1) JPS554193A (it)
CA (1) CA1120583A (it)
DE (1) DE2925111A1 (it)
FR (1) FR2429506A1 (it)
GB (1) GB2023939B (it)
IT (1) IT1162476B (it)
NL (1) NL7903794A (it)
SE (1) SE7905463L (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61176799A (ja) * 1985-01-29 1986-08-08 日本鉄道建設公団 トンネル掘削表層面防護工法
JP2693497B2 (ja) * 1988-07-22 1997-12-24 株式会社東芝 機械的ビーム走査アンテナ装置
GB2250135B (en) * 1990-10-30 1994-11-02 Glasnost International Plc Automatic feed horn
US5455589A (en) * 1994-01-07 1995-10-03 Millitech Corporation Compact microwave and millimeter wave radar
US6370398B1 (en) * 1999-05-24 2002-04-09 Telaxis Communications Corporation Transreflector antenna for wireless communication system
US7133001B2 (en) * 2003-11-03 2006-11-07 Toyon Research Corporation Inflatable-collapsible transreflector antenna
SE529885C2 (sv) 2006-05-22 2007-12-18 Powerwave Technologies Sweden Dubbelbandsantennarrangemang
RU2439757C1 (ru) * 2010-07-01 2012-01-10 Открытое акционерное общество "Научно-производственное предприятие "Радар ммс" Трансрефлектор

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835890A (en) * 1951-10-10 1958-05-20 Burt J Bittner Directional antenna
GB776258A (en) * 1954-03-02 1957-06-05 Marconi Wireless Telegraph Co Improvements in or relating to reflector aerials
US2871477A (en) * 1954-05-04 1959-01-27 Hatkin Leonard High gain omniazimuth antenna
US2820965A (en) * 1956-02-16 1958-01-21 Itt Dual polarization antenna
DE1036942B (de) * 1956-08-21 1958-08-21 Marconi Wireless Telegraph Co Antennenanordnung
US2989746A (en) * 1956-08-21 1961-06-20 Marconi Wireless Telegraph Co Scanning antenna system utilizing polarization filters
US3234559A (en) * 1960-05-07 1966-02-08 Telefunken Patent Multiple horn feed for parabolic reflector with phase and power adjustments
FR1585002A (it) * 1968-04-04 1970-01-09
US3938159A (en) * 1974-09-17 1976-02-10 Hughes Aircraft Company Dual frequency feed horn using notched fins for phase and amplitude control
US3916416A (en) * 1974-09-24 1975-10-28 Us Navy 360{20 {0 Azimuth scanning antenna without rotating RF joints
US4144535A (en) * 1977-02-22 1979-03-13 Bell Telephone Laboratories, Incorporated Method and apparatus for substantially reducing cross polarized radiation in offset reflector antennas

Also Published As

Publication number Publication date
CA1120583A (en) 1982-03-23
DE2925111A1 (de) 1980-01-10
NL7903794A (nl) 1979-12-28
IT1162476B (it) 1987-04-01
GB2023939A (en) 1980-01-03
FR2429506A1 (fr) 1980-01-18
SE7905463L (sv) 1979-12-23
US4214248A (en) 1980-07-22
GB2023939B (en) 1983-03-09
JPS554193A (en) 1980-01-12

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