JPS58176411U

JPS58176411U - antenna

Info

Publication number: JPS58176411U
Application number: JP7328682U
Authority: JP
Inventors: 弘渡辺; 和彦田村; 森山　敦雄
Original assignee: 八木アンテナ株式会社
Priority date: 1982-05-19
Filing date: 1982-05-19
Publication date: 1983-11-25
Also published as: JPH0328572Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来のアンテナを示す構成図、第２図はこの考
案の一実施例に係るアンテナを示す構成図、第３図は周
波数−利得を示す特性線図、第４図はこの考案の他の実
施例に係る共用導波器を一部破断して示す斜視図である
。２１・・・共用導波器、２２．２２’・・・ＵＨＦ帯域
の導波素子、２３・・・コイルＡ、　２５．　２５’・
・・補助素子Ａ、２８．２８’・・・補助素子Ｂ１２９
・・・コイルＢ、２４．２４’　、２６．２６’　、２
７゜２７’　、３０．３０’　、３１．３１’・・・端
子、３２・・・ＵＨＦ帯域の導波器、３３．３４・・・
放射器、３５・・・給電箱、３６．　３７．　３８・・
・反射器、３９−　・・・アーム、４０・・・プリント
基板、４１・・・導体、４２・・・コイル、４３・・・
リード線、４４・・・支承体、４５・・・キャップ。Fig. 1 is a block diagram showing a conventional antenna, Fig. 2 is a block diagram showing an antenna according to an embodiment of this invention, Fig. 3 is a characteristic diagram showing frequency-gain, and Fig. 4 is a block diagram showing an antenna according to an embodiment of this invention. FIG. 7 is a partially cutaway perspective view of a shared waveguide according to another embodiment. 21... Shared waveguide, 22. 22'... UHF band waveguide element, 23... Coil A, 25. 25'・
...Auxiliary element A, 28.28'...Auxiliary element B129
...Coil B, 24.24', 26.26', 2
7゜27', 30.30', 31.31'...terminal, 32...UHF band waveguide, 33.34...
Radiator, 35... Power supply box, 36. 37. 38...
・Reflector, 39-... Arm, 40... Printed circuit board, 41... Conductor, 42... Coil, 43...
Lead wire, 44...Support, 45...Cap.

Claims

[Scope of utility model registration request]

(1) First and second waveguide elements arranged symmetrically on the left and right sides of the arm on a horizontal line with respect to the radio wave arrival direction, and a second waveguide element on the outside of the first and second waveguide elements. first and second auxiliary elements arranged in the same manner as the first and second waveguide elements, opposing terminals of the first waveguide element and the second waveguide element, and the first waveguide element. The element is connected to opposing terminals of the element and the first auxiliary element, and the second waveguide element and the second auxiliary element are connected to opposing terminals, respectively, and exhibits a large inductive reactance at a receiving frequency in the UHF band and substantially An antenna characterized by having a shared waveguide made up of a plurality of coils whose terminals are separated.

(2) In the shared waveguide, a third auxiliary element is arranged outside the first auxiliary element, a fourth auxiliary element is arranged outside the second auxiliary element, and a fourth auxiliary element is arranged outside the first auxiliary element. The opposing terminals of the element and the third auxiliary element and the opposing terminals of the second auxiliary element and the fourth auxiliary element exhibit a large inductive reactance at a receiving frequency in the VHF high range, and the terminals are substantially disconnected. 2. The antenna according to claim 1, wherein the coils are connected to each other so as to be in a state where the coils are connected to each other.

(3) In the shared waveguide, the first and second waveguide elements, the first to fourth auxiliary elements, and the coil are each configured on a printed circuit board, and the printed circuit board is insulated. An antenna according to claim 1 or 2 of the utility model registration claim, which is housed inside a cylindrical support made of a material.