JPS5497352A - Non-directional antenna - Google Patents

Non-directional antenna

Info

Publication number
JPS5497352A
JPS5497352A JP454578A JP454578A JPS5497352A JP S5497352 A JPS5497352 A JP S5497352A JP 454578 A JP454578 A JP 454578A JP 454578 A JP454578 A JP 454578A JP S5497352 A JPS5497352 A JP S5497352A
Authority
JP
Japan
Prior art keywords
cavity
antenna
directional antenna
constitution
circular
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
JP454578A
Other languages
Japanese (ja)
Other versions
JPS603243B2 (en
Inventor
Akira Akaishi
Noriaki Watanabe
Shunichiro Kawabata
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
Original Assignee
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP454578A priority Critical patent/JPS603243B2/en
Publication of JPS5497352A publication Critical patent/JPS5497352A/en
Publication of JPS603243B2 publication Critical patent/JPS603243B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • H01Q21/20—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a curvilinear path

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To reduce the variation in amplitude of a radiation pattern, and also to miniaturize a non-directional antenna with circular-polarization antenna elements with a cavity arranged, by shaping the cavity into a truncated pyramid. CONSTITUTION:At the circumference of the non-directional antenna which has several cavity circular-polarization antenna elements arranged at its circumference, spiral antenna elements 4 with cavity in a truncated pyramid are arranged, thereby constituting the circular-polarization non-directional antenna. The antenna of this constitution is provided with rectangular spiral radiation conductors 3a to 3d, feeders 4a to 4c supplying radio waves to radiation conductors 3a to 3d are connected, and dielectrics 2a to 2d are fitted to the opening terminal of cavity 5. In this constitution, the amplitude variation of the radiation pattern can be reduced and the antenna can also be miniaturized.
JP454578A 1978-01-19 1978-01-19 omnidirectional antenna Expired JPS603243B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP454578A JPS603243B2 (en) 1978-01-19 1978-01-19 omnidirectional antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP454578A JPS603243B2 (en) 1978-01-19 1978-01-19 omnidirectional antenna

Publications (2)

Publication Number Publication Date
JPS5497352A true JPS5497352A (en) 1979-08-01
JPS603243B2 JPS603243B2 (en) 1985-01-26

Family

ID=11587009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP454578A Expired JPS603243B2 (en) 1978-01-19 1978-01-19 omnidirectional antenna

Country Status (1)

Country Link
JP (1) JPS603243B2 (en)

Also Published As

Publication number Publication date
JPS603243B2 (en) 1985-01-26

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