JPS5922521U - piezoelectric filter - Google Patents

piezoelectric filter

Info

Publication number
JPS5922521U
JPS5922521U JP11696182U JP11696182U JPS5922521U JP S5922521 U JPS5922521 U JP S5922521U JP 11696182 U JP11696182 U JP 11696182U JP 11696182 U JP11696182 U JP 11696182U JP S5922521 U JPS5922521 U JP S5922521U
Authority
JP
Japan
Prior art keywords
piezoelectric
filter
piezoelectric filter
substrate
electrode film
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.)
Pending
Application number
JP11696182U
Other languages
Japanese (ja)
Inventor
隆 山本
垣内 真
Original Assignee
株式会社村田製作所
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 株式会社村田製作所 filed Critical 株式会社村田製作所
Priority to JP11696182U priority Critical patent/JPS5922521U/en
Publication of JPS5922521U publication Critical patent/JPS5922521U/en
Pending legal-status Critical Current

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  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

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

【図面の簡単な説明】[Brief explanation of drawings]

第1図は、従来の圧電セラミックフィルタを用いた中間
周波回路図、第2図は、第1図の回路に用いられた従来
のフィルタの特性を示すグラフ、第3図は、この考案の
一実施例の圧電セラミックフィルタの電気回路図、第4
図は、第3図のフィルタに適用できるエネルギー閉じ込
め形の多重モード圧電セラミックフィルタ形成用の基板
の斜視図、第5図は、第3図のフィルタにおけるエネル
ギー閉じ込め形の多重モード圧電セラミックフィルタの
特性曲線の一例を示すグラフ、第6図は、第3図のフィ
ルタにおける梯子形圧電セラミックフィルタの特性曲線
の一例を示すグラフ1.第7図は、第3図のフィルタの
特性曲線を示すグラフである。 1−0・・・エネルギー閉じ込め形の多重モード圧電セ
ラミックフィルタ、11・・・圧電セラミック基板、1
2−1.12−2.12−3.13−1.14・・・電
極膜、15・・・梯子形圧電セラミックフィルタ、16
−1.16−2.・・・、16−4・・・2端子型圧電
セラミツクフイルタ。 M4    層7〜−1    −4 G−一一一一□省□□−j−一一一□4□−−−−−−
−−0
Figure 1 is a diagram of an intermediate frequency circuit using a conventional piezoelectric ceramic filter, Figure 2 is a graph showing the characteristics of the conventional filter used in the circuit of Figure 1, and Figure 3 is an example of this invention. Electrical circuit diagram of the piezoelectric ceramic filter of the example, No. 4
The figure is a perspective view of a substrate for forming an energy trapping type multi-mode piezoelectric ceramic filter that can be applied to the filter of Figure 3, and Figure 5 shows the characteristics of the energy trapping type multimode piezoelectric ceramic filter in the filter of Figure 3. A graph showing an example of the curve, FIG. 6, is a graph 1. showing an example of the characteristic curve of the ladder-type piezoelectric ceramic filter in the filter of FIG. FIG. 7 is a graph showing the characteristic curve of the filter of FIG. 1-0...Energy trapping multimode piezoelectric ceramic filter, 11...Piezoelectric ceramic substrate, 1
2-1.12-2.12-3.13-1.14... Electrode film, 15... Ladder-shaped piezoelectric ceramic filter, 16
-1.16-2. ..., 16-4...2-terminal piezoelectric ceramic filter. M4 layer 7~-1 -4 G-1111□Ministry□□-j-111□4□------
--0

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 圧電基板の一方の面に基板面積より小さい面積を有する
第1電極膜を設けるとともに、該圧電基板の他方の面に
、第1電極膜と対向するように分割された第2電極膜を
設けて形成したエネルギー閉じ込め形の多重モード圧電
フィルタと、圧電基板の両面に互いに対向する電極膜を
設けて形成した複数の圧電共振子から成る梯子形圧電フ
ィルタとを縦続関係に接続したことを特徴とする圧電フ
ィルタ。
A first electrode film having an area smaller than the substrate area is provided on one surface of the piezoelectric substrate, and a second electrode film divided so as to face the first electrode film is provided on the other surface of the piezoelectric substrate. The energy trapping multi-mode piezoelectric filter thus formed is connected in a cascade relationship to a ladder-type piezoelectric filter comprising a plurality of piezoelectric resonators formed by providing mutually opposing electrode films on both sides of a piezoelectric substrate. Piezoelectric filter.
JP11696182U 1982-07-30 1982-07-30 piezoelectric filter Pending JPS5922521U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11696182U JPS5922521U (en) 1982-07-30 1982-07-30 piezoelectric filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11696182U JPS5922521U (en) 1982-07-30 1982-07-30 piezoelectric filter

Publications (1)

Publication Number Publication Date
JPS5922521U true JPS5922521U (en) 1984-02-10

Family

ID=30269421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11696182U Pending JPS5922521U (en) 1982-07-30 1982-07-30 piezoelectric filter

Country Status (1)

Country Link
JP (1) JPS5922521U (en)

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