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JPS5637707A - Antenna device - Google Patents

Antenna device

Info

Publication number
JPS5637707A
JPS5637707A JP11308479A JP11308479A JPS5637707A JP S5637707 A JPS5637707 A JP S5637707A JP 11308479 A JP11308479 A JP 11308479A JP 11308479 A JP11308479 A JP 11308479A JP S5637707 A JPS5637707 A JP S5637707A
Authority
JP
Japan
Prior art keywords
reflectors
focus
reflector
shield
same time
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
JP11308479A
Other languages
Japanese (ja)
Inventor
Yasuhiro Kimura
Takamasa Furuno
Koji Abe
Mizuho Yamamae
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.)
Mitsubishi Electric Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Mitsubishi Electric Corp
Nippon Telegraph and Telephone 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 Mitsubishi Electric Corp, Nippon Telegraph and Telephone Corp filed Critical Mitsubishi Electric Corp
Priority to JP11308479A priority Critical patent/JPS5637707A/en
Publication of JPS5637707A publication Critical patent/JPS5637707A/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 realize a high-accuracy and easy attachment of the secondary reflector at a fixed position and in a relation to the main reflector and at the same time ensure an easy shielding of the undesired radiation waves, by securing a unified structure for both several units of secondary reflectors and the masking shield. CONSTITUTION:The focus F1 of the secondary reflector 2 coincides with the phase center of the primary radiator 1, and the F2 is the common focus of both the secondary reflector 3 and the main reflector 4. The periphery of the reflectors 2 and 3 is enclosed with the metal masking shield 5, and at the same time shield 5 is formed into one body with the reflectors 2 and 3. As a result, the radiation into the space other than the front direction of the antenna can be avoided for the electric wave diffracted at the edge of the reflectors 2 and 3 or the electric wave leaked directly from the reflectors 2 and 3 among the electric waves radiated from the focus F1.
JP11308479A 1979-09-04 1979-09-04 Antenna device Pending JPS5637707A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11308479A JPS5637707A (en) 1979-09-04 1979-09-04 Antenna device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11308479A JPS5637707A (en) 1979-09-04 1979-09-04 Antenna device

Publications (1)

Publication Number Publication Date
JPS5637707A true JPS5637707A (en) 1981-04-11

Family

ID=14603070

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11308479A Pending JPS5637707A (en) 1979-09-04 1979-09-04 Antenna device

Country Status (1)

Country Link
JP (1) JPS5637707A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606320U (en) * 1983-06-23 1985-01-17 日本電信電話株式会社 antenna device
EP0268363A1 (en) * 1986-10-23 1988-05-25 THE GENERAL ELECTRIC COMPANY, p.l.c. A protective cover for an antenna feed
JPS6430918U (en) * 1987-08-20 1989-02-27
WO2014103092A1 (en) * 2012-12-28 2014-07-03 日本電気株式会社 Antenna apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS606320U (en) * 1983-06-23 1985-01-17 日本電信電話株式会社 antenna device
EP0268363A1 (en) * 1986-10-23 1988-05-25 THE GENERAL ELECTRIC COMPANY, p.l.c. A protective cover for an antenna feed
JPS6430918U (en) * 1987-08-20 1989-02-27
WO2014103092A1 (en) * 2012-12-28 2014-07-03 日本電気株式会社 Antenna apparatus
US9685713B2 (en) 2012-12-28 2017-06-20 Nec Corporation Antenna device

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