JPS6323808U

JPS6323808U -

Info

Publication number: JPS6323808U
Application number: JP11611286U
Authority: JP
Priority date: 1986-07-29
Filing date: 1986-07-29
Publication date: 1988-02-17
Also published as: JPH0438561Y2

Description

[Brief explanation of drawings]

第１図及び第２図は本考案実施例のヘリカル共
振器を示す斜視図及び等価回路、第３図及び第４
図は本考案の他の実施例を示す斜視図及び等価回
路、第５図ａ〜ｃは本考案を説明するための断面
図、第６図は第１図及び第３図の断面図、第７図
ａ，ｂは第１図の実施例に対応した特性図、第８
図ａ，ｂは第３図の実施例に対応した特性図、第
９図ａ，ｂ〜第１１図ａ，ｂは共に従来例を示す
断面図及び等価回路、第１２図ａ，ｂ及び第１３
図ａ，ｂは各々第９図及び第１１図の従来例に対
応した特性図である。２１……外導体ケース、２２，２２ａ，２２ｂ
……λ／２型ヘリカルコイル、２３，２３ａ，２
３ｂ……可変容量素子、２４，２４ａ，２４ｂ…
…固定容量素子、２５……絶縁体、２６……外部
導体、２８……プリント基板、２９，２９ａ，２
９ｂ……導体層、３２，３２ａ，３２ｂ……結合
用容量素子、３３……段間結合用容量素子、３４
ａ，３４ｂ……特性補正用コイル。 1 and 2 are perspective views and equivalent circuits showing a helical resonator according to an embodiment of the present invention, and FIGS. 3 and 4 are
The figures are perspective views and equivalent circuits showing other embodiments of the present invention, Figures 5 a to c are sectional views for explaining the present invention, Figure 6 is a sectional view of Figures 1 and 3, and Figure 6 is a sectional view of Figures 1 and 3; Figures 7a and 7b are characteristic diagrams corresponding to the embodiment in Figure 1;
Figures a and b are characteristic diagrams corresponding to the embodiment shown in Figure 3, Figures 9a and b to Figure 11 a and b are cross-sectional views and equivalent circuits showing conventional examples, and Figures 12 a and b and 13
Figures a and b are characteristic diagrams corresponding to the conventional examples shown in Figures 9 and 11, respectively. 21...Outer conductor case, 22, 22a, 22b
...λ/2 type helical coil, 23, 23a, 2
3b...variable capacitance element, 24, 24a, 24b...
... Fixed capacitance element, 25 ... Insulator, 26 ... External conductor, 28 ... Printed circuit board, 29, 29a, 2
9b... Conductor layer, 32, 32a, 32b... Coupling capacitive element, 33... Interstage coupling capacitive element, 34
a, 34b... Coil for characteristic correction.

Claims

[Claims for Utility Model Registration] (1) A λ/2 type helical coil is arranged inside an outer conductor case, and a variable capacitance element connected to one end of the λ/2 type helical coil is fixed to a part of the outer conductor case. A helical resonator characterized in that a fixed capacitance element connected to the other end of the λ/2 type helical coil is fixed to another part of the outer conductor case. (2) The fixed capacitance element is comprised of a conductor at the other end of a λ/2 type helical coil and an external conductor opposed to the conductor with an insulator in between. helical resonator. (3) The helical resonator according to claim 2, wherein the conductor at the other end of the λ/2 type helical resonator is inserted and fixed within an insulator. (4) The helical resonator according to claim 2 of the utility model registration, characterized in that a fixed capacitance element or a variable capacitance element is connected in series to the external conductor.