JPS5922521U - piezoelectric filter - Google Patents
piezoelectric filterInfo
- 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
Links
Landscapes
- 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
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□−−−−−−
−−0Figure 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)
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.
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) |
-
1982
- 1982-07-30 JP JP11696182U patent/JPS5922521U/en active Pending
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