FR1584348A - - Google Patents

Info

Publication number
FR1584348A
FR1584348A FR1584348DA FR1584348A FR 1584348 A FR1584348 A FR 1584348A FR 1584348D A FR1584348D A FR 1584348DA FR 1584348 A FR1584348 A FR 1584348A
Authority
FR
France
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.)
Expired
Application number
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR1584348A publication Critical patent/FR1584348A/fr
Expired 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
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial
FR1584348D 1968-07-16 1968-07-16 Expired FR1584348A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR159316 1968-07-16

Publications (1)

Publication Number Publication Date
FR1584348A true FR1584348A (enExample) 1969-12-19

Family

ID=8652613

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1584348D Expired FR1584348A (enExample) 1968-07-16 1968-07-16

Country Status (1)

Country Link
FR (1) FR1584348A (enExample)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017589A1 (fr) * 1979-04-09 1980-10-15 Thomson-Csf Antenne cassegrain montée dans un radome
DE2920781A1 (de) * 1979-05-22 1980-11-27 Siemens Ag Antennenanordnung, insbesondere cassegrain-antennenanordnung
DE2954351C2 (de) * 1979-05-22 1986-07-17 Siemens AG, 1000 Berlin und 8000 München Reflektorantenne
WO2000072403A3 (en) * 1999-05-24 2001-04-26 Telaxis Comm Corp Twistreflector antenna for wireless communication system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0017589A1 (fr) * 1979-04-09 1980-10-15 Thomson-Csf Antenne cassegrain montée dans un radome
FR2454190A1 (fr) * 1979-04-09 1980-11-07 Thomson Csf Antenne cassegrain montee dans un radome
DE2920781A1 (de) * 1979-05-22 1980-11-27 Siemens Ag Antennenanordnung, insbesondere cassegrain-antennenanordnung
DE2954351C2 (de) * 1979-05-22 1986-07-17 Siemens AG, 1000 Berlin und 8000 München Reflektorantenne
WO2000072403A3 (en) * 1999-05-24 2001-04-26 Telaxis Comm Corp Twistreflector antenna for wireless communication system

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Legal Events

Date Code Title Description
ST Notification of lapse