IT965409B - Perfezionamenti alle antenne iperfrequenze - Google Patents

Perfezionamenti alle antenne iperfrequenze

Info

Publication number
IT965409B
IT965409B IT52828/72A IT5282872A IT965409B IT 965409 B IT965409 B IT 965409B IT 52828/72 A IT52828/72 A IT 52828/72A IT 5282872 A IT5282872 A IT 5282872A IT 965409 B IT965409 B IT 965409B
Authority
IT
Italy
Prior art keywords
hyperfrequency
antennas
hyperfrequency antennas
Prior art date
Application number
IT52828/72A
Other languages
English (en)
Original Assignee
Thomson Csf
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 filed Critical Thomson Csf
Application granted granted Critical
Publication of IT965409B publication Critical patent/IT965409B/it

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
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)
IT52828/72A 1971-09-22 1972-09-19 Perfezionamenti alle antenne iperfrequenze IT965409B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7134067A FR2153164B1 (it) 1971-09-22 1971-09-22

Publications (1)

Publication Number Publication Date
IT965409B true IT965409B (it) 1974-01-31

Family

ID=9083297

Family Applications (1)

Application Number Title Priority Date Filing Date
IT52828/72A IT965409B (it) 1971-09-22 1972-09-19 Perfezionamenti alle antenne iperfrequenze

Country Status (5)

Country Link
US (1) US3797020A (it)
DE (1) DE2246650C2 (it)
FR (1) FR2153164B1 (it)
GB (1) GB1385737A (it)
IT (1) IT965409B (it)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3914768A (en) * 1974-01-31 1975-10-21 Bell Telephone Labor Inc Multiple-beam Cassegrainian antenna
US3953858A (en) * 1975-05-30 1976-04-27 Bell Telephone Laboratories, Incorporated Multiple beam microwave apparatus
FR2458821A1 (fr) * 1979-06-13 1981-01-02 Thomson Csf Dispositif reducteur de brouillage en polarisation rectiligne tournante et radar comportant un tel dispositif
US4259674A (en) * 1979-10-24 1981-03-31 Bell Laboratories Phased array antenna arrangement with filtering to reduce grating lobes
US4435714A (en) 1980-12-29 1984-03-06 Ford Aerospace & Communications Corp. Grating lobe eliminator
US4504835A (en) * 1982-06-15 1985-03-12 The United States Of America As Represented By The Secretary Of The Navy Low sidelobe, high efficiency mirror antenna with twist reflector
EP0170726A1 (de) * 1984-07-13 1986-02-12 Siemens Aktiengesellschaft Zweireflektor-Richtantenne
FR2649543B1 (fr) * 1989-07-07 1991-11-29 Thomson Csf Distributeur d'energie hyperfrequence pouvant rayonner directement
FR2655202B1 (fr) * 1989-11-24 1992-02-07 Thomson Csf Antenne a polarisation circulaire, notamment pour reseau d'antennes.
FR2697949B1 (fr) * 1992-11-06 1995-01-06 Thomson Csf Antenne pour radar notamment de désignation et de trajectographie.
US5455589A (en) * 1994-01-07 1995-10-03 Millitech Corporation Compact microwave and millimeter wave radar
FR2715511B1 (fr) * 1994-01-21 1996-02-23 Thomson Csf Dispositif de compensation des erreurs de pointage causées par des pannes de déphaseurs d'antennes à balayage électronique ou de coefficients d'antennes à formation de faisceaux par le calcul.
DE59508775D1 (de) * 1994-04-08 2000-11-16 Siemens Ag Radarantenne mit zumindest einem Primärstrahler und einem parabolförmigen Reflektor für ein Verkehrs-Radargerät zur Verkehrserfassung
FR2725075B1 (fr) * 1994-09-23 1996-11-15 Thomson Csf Procede et dispositif d'elargissement du diagramme de rayonnement d'une antenne active
FR2738397B1 (fr) * 1995-08-29 1997-12-05 Thomson Csf Procede d'elargissement du faisceau d'une antenne sterique
FR2775347B1 (fr) * 1998-02-24 2000-05-12 Thomson Csf Procede de determination de l'erreur de calage de la face rayonnante d'une antenne reseau a balayage electronique
US6014108A (en) * 1998-04-09 2000-01-11 Hughes Electronics Corporation Transverse-folded scanning antennas
US6225964B1 (en) * 1999-06-09 2001-05-01 Hughes Electronics Corporation Dual gridded reflector antenna system
RU2012111441A (ru) * 2012-03-26 2013-10-10 Джи-хо Ан Компактная неосесимметричная двухзеркальная антенна
US9929474B2 (en) * 2015-07-02 2018-03-27 Sea Tel, Inc. Multiple-feed antenna system having multi-position subreflector assembly
US11688950B2 (en) * 2020-08-10 2023-06-27 Lockheed Martin Corporation Multisegment array-fed ring-focus reflector antenna for wide-angle scanning

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1396404A (fr) * 1964-03-09 1965-04-23 Csf Nouveau système de changement de fréquence pour récepteur à voies multiples
FR1508062A (fr) * 1965-04-12 1968-01-05 Csf Antennes aplanétiques

Also Published As

Publication number Publication date
FR2153164A1 (it) 1973-05-04
DE2246650A1 (de) 1973-03-29
FR2153164B1 (it) 1976-10-29
GB1385737A (en) 1975-02-26
US3797020A (en) 1974-03-12
DE2246650C2 (de) 1982-08-12

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