JPS56169902A - Antenna device - Google Patents

Antenna device

Info

Publication number
JPS56169902A
JPS56169902A JP7454480A JP7454480A JPS56169902A JP S56169902 A JPS56169902 A JP S56169902A JP 7454480 A JP7454480 A JP 7454480A JP 7454480 A JP7454480 A JP 7454480A JP S56169902 A JPS56169902 A JP S56169902A
Authority
JP
Japan
Prior art keywords
support
waves
length
quadrangular pyramids
height
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.)
Granted
Application number
JP7454480A
Other languages
Japanese (ja)
Other versions
JPH0221165B2 (en
Inventor
Hideo Sato
Akiyoshi Ogawa
Naoto Matsunaka
Takashi Kataki
Takashi Hirukoi
Katsuhiko Aoki
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
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
Mitsubishi Electric 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 Kokusai Denshin Denwa KK, Mitsubishi Electric Corp filed Critical Kokusai Denshin Denwa KK
Priority to JP7454480A priority Critical patent/JPS56169902A/en
Priority to CA000378683A priority patent/CA1172354A/en
Priority to US06/269,216 priority patent/US4369448A/en
Priority to GB8116783A priority patent/GB2081023B/en
Publication of JPS56169902A publication Critical patent/JPS56169902A/en
Publication of JPH0221165B2 publication Critical patent/JPH0221165B2/ja
Granted 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
    • H01Q19/12—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 wherein the surfaces are concave

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

PURPOSE:To scatter the scattered wave by a support to a broad area and to improve the broad angle radiating characteristics, by arranging a plurality of types of quadrangular pyramids in which the length or height of the bottom is different irregularly on a part or all the surfaces of support. CONSTITUTION:In quadrangular pyramids 10, the length and height of the bottom side along the longitudinal direction of a support 4 are equal to or larger than the wavelength and the length of other sides of the bottom is made equal to the width of the support 4. Further, a plurality of quadrangular pyramids 10 in which the length or height of the side along the longitudinal direction of the support 4 is different are irregularly arranged. With this constitution, the scattered waves by the quadrangular pramids 10 of the plane waves 5 are represented as the synthesized waves of the reflecting waves from surfaces 8a, 8b constituting the quadrangular pyramids 10, diffracted waves by the edges between the surfaces 8a, 8b, and the diffracted waves by the edges 7 between the quadrangular pyramids 10 and the support 4. Further, the plane waves 5 incident to the support 4 is scattered to a broad region, allowing to reduce the radiation level of scattering.
JP7454480A 1980-06-03 1980-06-03 Antenna device Granted JPS56169902A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP7454480A JPS56169902A (en) 1980-06-03 1980-06-03 Antenna device
CA000378683A CA1172354A (en) 1980-06-03 1981-05-29 Microwave antenna having improved wide angle radiation characteristics
US06/269,216 US4369448A (en) 1980-06-03 1981-06-02 Microwave antenna with radiation scattering support member elements
GB8116783A GB2081023B (en) 1980-06-03 1981-06-02 Reflector antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7454480A JPS56169902A (en) 1980-06-03 1980-06-03 Antenna device

Publications (2)

Publication Number Publication Date
JPS56169902A true JPS56169902A (en) 1981-12-26
JPH0221165B2 JPH0221165B2 (en) 1990-05-14

Family

ID=13550300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7454480A Granted JPS56169902A (en) 1980-06-03 1980-06-03 Antenna device

Country Status (1)

Country Link
JP (1) JPS56169902A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53105343A (en) * 1977-02-26 1978-09-13 Nippon Telegr & Teleph Corp <Ntt> Antenna unit
JPS53105434A (en) * 1977-02-25 1978-09-13 Nippon Kayaku Co Ltd Separation of dichlorobenzene isomers
JPS54134959A (en) * 1978-04-12 1979-10-19 Mitsubishi Electric Corp Radio-wave shielding board

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53105434A (en) * 1977-02-25 1978-09-13 Nippon Kayaku Co Ltd Separation of dichlorobenzene isomers
JPS53105343A (en) * 1977-02-26 1978-09-13 Nippon Telegr & Teleph Corp <Ntt> Antenna unit
JPS54134959A (en) * 1978-04-12 1979-10-19 Mitsubishi Electric Corp Radio-wave shielding board

Also Published As

Publication number Publication date
JPH0221165B2 (en) 1990-05-14

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