JPS5574220A - Multi-beam offset antenna - Google Patents

Multi-beam offset antenna

Info

Publication number
JPS5574220A
JPS5574220A JP14852778A JP14852778A JPS5574220A JP S5574220 A JPS5574220 A JP S5574220A JP 14852778 A JP14852778 A JP 14852778A JP 14852778 A JP14852778 A JP 14852778A JP S5574220 A JPS5574220 A JP S5574220A
Authority
JP
Japan
Prior art keywords
antenna
reflector
sub
main reflector
uniform
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
JP14852778A
Other languages
Japanese (ja)
Inventor
Kenji Ueno
Hiroyuki Kumazawa
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP14852778A priority Critical patent/JPS5574220A/en
Publication of JPS5574220A publication Critical patent/JPS5574220A/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

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

PURPOSE:To avoid the increase in the amount of interference between beams due to the deterioration of side lobe characteristics, by increasing the antenna effieicncy with the correction so that the phase of electromagnetic waves on the antenna opening can be uniform for the sub-reflection mirror surface. CONSTITUTION:The antenna is two-dimensionally provided with the same method as the offset type multi-beam antenna at the surface including the foci 3, 3'. As a result, the curve crossing between each mirror surface of the main reflector and sub- reflector 1 and 2 and the vertical surface perpendicular to the progressing direction 5 of electromagnetic waves is determined. Next, the curve which is made with the turning the curve to the main reflector 1 around the center axis 6 is taken as the mirror surface of the main reflector 1. Further, the communication path length of electromagnetic waves emitted from the primary radiator 4 on the focus 3 to the vertical surface to the progressing direction 5 via the sub-reflector and main reflector can be uniform at the antenna aperture to the utmost, and that emitted from the primary radiator 4' on the focus 3' to the vertical plane to the progressing direction 5' via the sub-reflector and main reflector can be uniform to the utmost at the entire antenna aperture.
JP14852778A 1978-11-30 1978-11-30 Multi-beam offset antenna Pending JPS5574220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14852778A JPS5574220A (en) 1978-11-30 1978-11-30 Multi-beam offset antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14852778A JPS5574220A (en) 1978-11-30 1978-11-30 Multi-beam offset antenna

Publications (1)

Publication Number Publication Date
JPS5574220A true JPS5574220A (en) 1980-06-04

Family

ID=15454766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14852778A Pending JPS5574220A (en) 1978-11-30 1978-11-30 Multi-beam offset antenna

Country Status (1)

Country Link
JP (1) JPS5574220A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11491927B2 (en) 2017-11-17 2022-11-08 Sumitomo Wiring Systems, Ltd. Wire harness support member, support member-attached wire harness, and support structure for support member-attached wire harness

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11491927B2 (en) 2017-11-17 2022-11-08 Sumitomo Wiring Systems, Ltd. Wire harness support member, support member-attached wire harness, and support structure for support member-attached wire harness

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