JPS56138303A - Primary radiator for duplex reflecting mirror attenna - Google Patents

Primary radiator for duplex reflecting mirror attenna

Info

Publication number
JPS56138303A
JPS56138303A JP4179080A JP4179080A JPS56138303A JP S56138303 A JPS56138303 A JP S56138303A JP 4179080 A JP4179080 A JP 4179080A JP 4179080 A JP4179080 A JP 4179080A JP S56138303 A JPS56138303 A JP S56138303A
Authority
JP
Japan
Prior art keywords
reflecting mirror
mirror
horn
flat
rotating shaft
Prior art date
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.)
Pending
Application number
JP4179080A
Other languages
Japanese (ja)
Inventor
Ikuo Sato
Isao Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4179080A priority Critical patent/JPS56138303A/en
Publication of JPS56138303A publication Critical patent/JPS56138303A/en
Pending 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
    • H01Q19/191—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 the primary active element uses one or more deflecting surfaces, e.g. beam waveguide feeds

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

PURPOSE:To enable to supply the plane waves having symmetrical liminous intensity distribution from the location independently of the rotation of the antenna, by specifying the location and shape of the reflecting mirror provided with the flat mirror, between the subreflecting mirror and the cone horn for the earth station of satellite communication. CONSTITUTION:In the primary radiator 1'', the ellipse reflecting mirror E1 and reflecting mirror F4 are inserted between the parabola reflecting mirror P1' and core horn L, and the flat mirror F3 is provided between the reflecting mirror P1' and the subreflecting mirror 2 of a Cassegrain antenna. The relation of the angle alpha between the rotating shaft S of said reflecting mirror P1' and the rotating shaft T, the angle beta between the rotating shaft T and the mirror image U to the flat mirror F4 located at the center axis of the horn L, and the eccentric rate of the reflecting mirror E1 is restricted so that the geometrical and optical assymmetry between the reflecting mirror P1' and E1 can be cancelled. Thus, the flat wave plane 5 having axially symmetrical luminous intensity distribution in which the cross polarized wave component is suppressed, can be obtained. Said horn L is fixed independently of the rotation of the antenna with the rotation mechanisms R3, R4.
JP4179080A 1980-03-31 1980-03-31 Primary radiator for duplex reflecting mirror attenna Pending JPS56138303A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4179080A JPS56138303A (en) 1980-03-31 1980-03-31 Primary radiator for duplex reflecting mirror attenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4179080A JPS56138303A (en) 1980-03-31 1980-03-31 Primary radiator for duplex reflecting mirror attenna

Publications (1)

Publication Number Publication Date
JPS56138303A true JPS56138303A (en) 1981-10-28

Family

ID=12618128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4179080A Pending JPS56138303A (en) 1980-03-31 1980-03-31 Primary radiator for duplex reflecting mirror attenna

Country Status (1)

Country Link
JP (1) JPS56138303A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6856435B2 (en) 2001-07-27 2005-02-15 Gigabit Optics Corporation System and method for optical multiplexing and/or demultiplexing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6856435B2 (en) 2001-07-27 2005-02-15 Gigabit Optics Corporation System and method for optical multiplexing and/or demultiplexing

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