JPS57150204A - Microwave band antenna - Google Patents

Microwave band antenna

Info

Publication number
JPS57150204A
JPS57150204A JP3611581A JP3611581A JPS57150204A JP S57150204 A JPS57150204 A JP S57150204A JP 3611581 A JP3611581 A JP 3611581A JP 3611581 A JP3611581 A JP 3611581A JP S57150204 A JPS57150204 A JP S57150204A
Authority
JP
Japan
Prior art keywords
antenna
waveguide
parabolic
primary radiator
horn
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
JP3611581A
Other languages
Japanese (ja)
Other versions
JPH047123B2 (en
Inventor
Toshio Fujita
Toru Kamimura
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.)
DX Antenna Co Ltd
Original Assignee
DX Antenna 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 DX Antenna Co Ltd filed Critical DX Antenna Co Ltd
Priority to JP3611581A priority Critical patent/JPS57150204A/en
Publication of JPS57150204A publication Critical patent/JPS57150204A/en
Publication of JPH047123B2 publication Critical patent/JPH047123B2/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
    • 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

Landscapes

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

Abstract

PURPOSE:To raise the aperture efficiency, by providing a subhorn on the axial line of a primary radiator in the direction of the whole circumference or a part of the circumference backward from the aperture edge part of a horn antenna, in the primary radiator which is combined with a reflector and constitutes a parabolic antenna. CONSTITUTION:A flange part 2 is provided on the end part of a waveguide 1, a horn antenna 3 is fixed with a screw 4, the external shape of the antenna 3 is formed cylindrically or square-tubularly, and a horn 5 is formed in its in inside. At a position of lambda/4 in the direction of a waveguide 1, a subhorn 6 whose aperture angle is about 45 deg. is installed. A primary radiator 10 of a parabolic antenna is placed on the focus of a parabolic reflector 11 by the waveguide 1. An electromagnetic wave radiated from the antenna 3 mostly advances to the parabolic reflector 11 as main radiations A, B and C, and is partially radiated as leakage radiations A', B' and C', their influence is small and addition, etc. are operated, therefore, the aperture efficiency is raised.
JP3611581A 1981-03-12 1981-03-12 Microwave band antenna Granted JPS57150204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3611581A JPS57150204A (en) 1981-03-12 1981-03-12 Microwave band antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3611581A JPS57150204A (en) 1981-03-12 1981-03-12 Microwave band antenna

Publications (2)

Publication Number Publication Date
JPS57150204A true JPS57150204A (en) 1982-09-17
JPH047123B2 JPH047123B2 (en) 1992-02-10

Family

ID=12460774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3611581A Granted JPS57150204A (en) 1981-03-12 1981-03-12 Microwave band antenna

Country Status (1)

Country Link
JP (1) JPS57150204A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014169907A (en) * 2013-03-04 2014-09-18 Japan Radio Co Ltd Radar antenna

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5425654A (en) * 1977-07-29 1979-02-26 Hitachi Denshi Ltd Antenna mocrowave band

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5425654A (en) * 1977-07-29 1979-02-26 Hitachi Denshi Ltd Antenna mocrowave band

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014169907A (en) * 2013-03-04 2014-09-18 Japan Radio Co Ltd Radar antenna

Also Published As

Publication number Publication date
JPH047123B2 (en) 1992-02-10

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