JPS62117801U

JPS62117801U -

Info

Publication number: JPS62117801U
Application number: JP361386U
Authority: JP
Priority date: 1986-01-14
Filing date: 1986-01-14
Publication date: 1987-07-27

Description

[Brief explanation of the drawing]

第１図は、本考案の誘電体フイルターの一実施
例の縦断面図である。第２図は、従来の誘電体フ
イルターの縦断面図である。第３図は、第２図に
示されている誘電体フイルターの電気的等価回路
図である。第４図は、従来の誘電体フイルターの
縦断面図である。第５図は、第４図に示されてい
る誘電体フイルターの電気的等価回路図である。
第６図は、従来の誘電体フイルターにおける周波
数と減衰量との関係を示す周波数減衰特性の線図
である。符号の説明、１，１１，１２…誘電体フイルタ
ー、２，２１，２２…誘電体磁器、３１，３２，
３３，５１，５２，７１，７２，７５…貫通孔、
４１，４２，４３，４４，６１，６２，６３，８
１，８２，８３，８５，８６…導電膜、９，９１
，９２，９５…開放端面、１２，１３，１４…ホ
ルダー、１２０，１３０，１４０…中心導体、１
２１，１３１，１４１…ホルダーフランジ部、１
２２，１３２，１４２…ホルダー基部、１２３，
１３３，１４３…孔部、１５，１６，１７，１８
，１９…コンデンサ、１３５，１８０…リード線
、１７０，１９０…出入力リード端子。 FIG. 1 is a longitudinal cross-sectional view of one embodiment of the dielectric filter of the present invention. FIG. 2 is a longitudinal sectional view of a conventional dielectric filter. FIG. 3 is an electrical equivalent circuit diagram of the dielectric filter shown in FIG. 2. FIG. 4 is a longitudinal sectional view of a conventional dielectric filter. FIG. 5 is an electrical equivalent circuit diagram of the dielectric filter shown in FIG. 4.
FIG. 6 is a diagram of frequency attenuation characteristics showing the relationship between frequency and attenuation amount in a conventional dielectric filter. Explanation of symbols: 1, 11, 12...Dielectric filter, 2, 21, 22...Dielectric ceramic, 31, 32,
33, 51, 52, 71, 72, 75...through hole,
41, 42, 43, 44, 61, 62, 63, 8
1, 82, 83, 85, 86... conductive film, 9, 91
, 92, 95... Open end surface, 12, 13, 14... Holder, 120, 130, 140... Center conductor, 1
21, 131, 141...Holder flange part, 1
22, 132, 142...Holder base, 123,
133, 143...hole, 15, 16, 17, 18
, 19... Capacitor, 135, 180... Lead wire, 170, 190... Input/output lead terminal.

Claims

[Scope of utility model registration request]

Three or more through-holes are formed in the block-shaped dielectric porcelain, and an open end surface is formed around the through-hole on one side of the two surfaces in which the through-hole is opened, and the bottom and side surfaces and the inner periphery of the through-hole are formed. A conductive film is formed on the surface, a band-pass filter is formed by the plurality of through-hole rows, a band-stop filter is formed by the remaining through-holes, and the through-holes of the band-stop filter have holes. A dielectric filter characterized in that a dielectric holder is fitted, a center conductor is fitted into a hole of the holder, and the terminal part of a bandpass filter is electrically connected to the center conductor.