JPS5537076A - Antenna device - Google Patents

Antenna device

Info

Publication number
JPS5537076A
JPS5537076A JP11052278A JP11052278A JPS5537076A JP S5537076 A JPS5537076 A JP S5537076A JP 11052278 A JP11052278 A JP 11052278A JP 11052278 A JP11052278 A JP 11052278A JP S5537076 A JPS5537076 A JP S5537076A
Authority
JP
Japan
Prior art keywords
radiation pattern
plate
edges
wide
antenna device
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
JP11052278A
Other languages
Japanese (ja)
Other versions
JPS5820161B2 (en
Inventor
Tadashi Takano
Hidekazu Ogawa
Takashi Kataki
Shuji Urasaki
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 JP11052278A priority Critical patent/JPS5820161B2/en
Publication of JPS5537076A publication Critical patent/JPS5537076A/en
Publication of JPS5820161B2 publication Critical patent/JPS5820161B2/en
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
    • H01Q19/12—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
    • H01Q19/13—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 the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • H01Q19/132—Horn reflector antennas; Off-set feeding

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Waveguide Aerials (AREA)

Abstract

PURPOSE:To prevent the impairment of the wide-angle radiation pattern caused by the blocking or the like with the effect of the shield plate featuring a drill shape which is provided at the edge of the opening part of the antenna used for the frequency band higher than the microwave, thus obtaining a wide-angle radiation pattern. CONSTITUTION:The spherical wave radiated from feed horn 1 is reflected by reflector 2 to be changed into the plane wave to be radiated to outside through structure 4 of a cylindrical form through the antenna device, which can be used for the higher frequency bands. Then drill-shaped shield plare 4 is provided at the opening edge of such antenna device. Thus the refraction phenomenon caused at edges P1 and P2 of the opening by plate 4 is shifted to edges Q1 and Q2, thus improving the refraction wave and thus obtaining a wide-angle radiation pattern. Furthermore, the electric wave absorber is installed inside plate 4 to secure reflection for the reflected waves from edges P1 and P2 within plate 4, thus avoiding giving the evil effect to the radiation pattern.
JP11052278A 1978-09-08 1978-09-08 antenna device Expired JPS5820161B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11052278A JPS5820161B2 (en) 1978-09-08 1978-09-08 antenna device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11052278A JPS5820161B2 (en) 1978-09-08 1978-09-08 antenna device

Publications (2)

Publication Number Publication Date
JPS5537076A true JPS5537076A (en) 1980-03-14
JPS5820161B2 JPS5820161B2 (en) 1983-04-21

Family

ID=14537924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11052278A Expired JPS5820161B2 (en) 1978-09-08 1978-09-08 antenna device

Country Status (1)

Country Link
JP (1) JPS5820161B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6930647B2 (en) 2001-05-17 2005-08-16 Hitachi Kokusai Electric Inc. Semicircular radial antenna

Also Published As

Publication number Publication date
JPS5820161B2 (en) 1983-04-21

Similar Documents

Publication Publication Date Title
DE3166182D1 (en) Antenna feed for a transmitting-receiving antenna
AU580997B2 (en) Horn reflector antenna with absorber lined conical feed
DE3267174D1 (en) Passive microwave duplexer using semi-conductors
US4423422A (en) Diagonal-conical horn-reflector antenna
US3631502A (en) Corrugated horn antenna
JPS5631205A (en) Slot array antenna unit
JPS5537076A (en) Antenna device
GB1465659A (en) Wide-band spiral antenna
GB708614A (en) Microwave antenna
GB1326210A (en) Antenna using at least one reflector
US3086205A (en) Ring scanning antenna adapted for flush mounting
US2530079A (en) Directive antenna system
JPS5720002A (en) Short backfire antenna
US2556969A (en) Antenna reflector
SU1092623A1 (en) Horn radiator
JPS5746506A (en) Short back fire antenna
JPS57193104A (en) Antenna device
JPS57154909A (en) Frequency band shared antenna
JPS57154910A (en) Frequency band shared antenna
JPS5637707A (en) Antenna device
JPS52135245A (en) Bent horn reflector antenna equopment
EP0353731A3 (en) Anechoic chamber
GB606926A (en) Improvements in directive antenna systems
GB1099378A (en) Improvements in or relating to radio horns
JPS555521A (en) Low side lobe antenna unit