JPS558145A - J-type antenna - Google Patents

J-type antenna

Info

Publication number
JPS558145A
JPS558145A JP8080878A JP8080878A JPS558145A JP S558145 A JPS558145 A JP S558145A JP 8080878 A JP8080878 A JP 8080878A JP 8080878 A JP8080878 A JP 8080878A JP S558145 A JPS558145 A JP S558145A
Authority
JP
Japan
Prior art keywords
wavelength
basement
attached
matching
radiation
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
JP8080878A
Other languages
Japanese (ja)
Other versions
JPS5836842B2 (en
Inventor
Hiroshi Takemoto
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.)
MIZUTANI PURINTEKUSU KK
Original Assignee
MIZUTANI PURINTEKUSU KK
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 MIZUTANI PURINTEKUSU KK filed Critical MIZUTANI PURINTEKUSU KK
Priority to JP8080878A priority Critical patent/JPS5836842B2/en
Publication of JPS558145A publication Critical patent/JPS558145A/en
Publication of JPS5836842B2 publication Critical patent/JPS5836842B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole

Abstract

PURPOSE:To secure an easy matching even with a big change of the antenna capacity with installation of the arrester circuit as well as the vertical attachment of both the radiation element of 3/4 wavelength and the matching element of 1/4 wavelength onto the metal basement to be earthed. CONSTITUTION:Both radiation element 29 of 3/4 wavelength and matching element 34 of 1/4 wavelength formed with the metal pipe of an appropriate diameter are attached vertically onto earthed metal basement 30 with a constant parallel space kept between the two elements. At the same time, feed matching element 31 and 34 formed by the metal pipe are attached to basement 30 via insulator 32 and a parallel space secured between. Furthermore, element 34 is attached to circular arc type slit 33 centering on element 29 formed on basement 30 via nut 35 in such way that the space can be adjusted to element 31. In such constitution, the steady non- directive radiation of the vertically polarization is obtained at the area of 1/2 wavelength of element 29. In addition, the degree of lightning arrest is increased since element 29 and 34 can be attached directly onto basement 30.
JP8080878A 1978-07-03 1978-07-03 J type antenna Expired JPS5836842B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8080878A JPS5836842B2 (en) 1978-07-03 1978-07-03 J type antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8080878A JPS5836842B2 (en) 1978-07-03 1978-07-03 J type antenna

Publications (2)

Publication Number Publication Date
JPS558145A true JPS558145A (en) 1980-01-21
JPS5836842B2 JPS5836842B2 (en) 1983-08-12

Family

ID=13728758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8080878A Expired JPS5836842B2 (en) 1978-07-03 1978-07-03 J type antenna

Country Status (1)

Country Link
JP (1) JPS5836842B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6313800B1 (en) 1997-12-31 2001-11-06 Henry D. Kallina Adjustable broadband antenna
JP2008060762A (en) * 2006-08-30 2008-03-13 Yokowo Co Ltd Feeding structure of antenna
JP2015182471A (en) * 2014-03-20 2015-10-22 株式会社タダノ Lightning conductor structure in telescopic mast

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6313800B1 (en) 1997-12-31 2001-11-06 Henry D. Kallina Adjustable broadband antenna
JP2008060762A (en) * 2006-08-30 2008-03-13 Yokowo Co Ltd Feeding structure of antenna
JP2015182471A (en) * 2014-03-20 2015-10-22 株式会社タダノ Lightning conductor structure in telescopic mast

Also Published As

Publication number Publication date
JPS5836842B2 (en) 1983-08-12

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