JPH0379531U - - Google Patents
Info
- Publication number
- JPH0379531U JPH0379531U JP14114289U JP14114289U JPH0379531U JP H0379531 U JPH0379531 U JP H0379531U JP 14114289 U JP14114289 U JP 14114289U JP 14114289 U JP14114289 U JP 14114289U JP H0379531 U JPH0379531 U JP H0379531U
- Authority
- JP
- Japan
- Prior art keywords
- tuning fork
- electrodes
- piezoelectric
- piezoelectric filter
- view
- 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
- 238000013016 damping Methods 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
第１図ａは本考案の一実施例に係る圧電フイル
タの斜視図、同図ｂ，ｃは同圧電フイルタの片面
側及び他面側を示す平面図、第２図は上記圧電フ
イルタの等価回路図、第３図は上記圧電フイルタ
の製品の一例である樹脂デイツプ構造とした場合
の斜視図、第４図は同圧電フイルタの製品の他例
であるチツプ構造とする場合の分解した状態での
斜視図、第５図ａは本考案の他の実施例に係る圧
電フイルタの斜視図、同図ｂ，ｃは同圧電フイル
タの片面側及び他面側を示す平面図、第６図は上
記他の実施例に係る圧電フイルタの等価回路図、
第７図ａ，ｂは各々本考案の更に他の実施例に係
る圧電フイルタに適用可能な圧電基板の構造を示
す斜視図、第８図ａは従来の圧電フイルタの斜視
図、同図ｂ，ｃは同圧電フイルタの片面側及び他
面側を示す平面図、第９図は上記従来の圧電フイ
ルタをカスケード接続した状態での斜視図である
。
符号の説明、１，２１……圧電フイルタ、２，
２２……圧電基板、２ａ乃至２ｆ，２２ａ乃至２
２ｆ……スリツト、２２ｇ，３５……スリツト（
弾性結合減衰手段）、３，４，２３，２４，３３
，３４……音叉部、５，８，２５，２８……第２
電極、６，７，２６，２７……第１電極、９，１
０，２９，３０……第３電極、１１……第４電極
、Ｃ２，Ｃ３……コンデンサ。
Figure 1a is a perspective view of a piezoelectric filter according to an embodiment of the present invention, Figures b and c are plan views showing one side and the other side of the piezoelectric filter, and Figure 2 is an equivalent circuit of the piezoelectric filter. Figure 3 is a perspective view of a resin dip structure, which is an example of the piezoelectric filter mentioned above, and Figure 4 is an exploded view of another example of the same piezoelectric filter, which has a chip structure. FIG. 5a is a perspective view of a piezoelectric filter according to another embodiment of the present invention, FIGS. 5b and 5c are plan views showing one side and the other side of the same piezoelectric filter, and FIG. An equivalent circuit diagram of a piezoelectric filter according to an example of
7a and 7b are perspective views showing the structure of a piezoelectric substrate applicable to a piezoelectric filter according to another embodiment of the present invention, FIG. 8a is a perspective view of a conventional piezoelectric filter, FIG. 9c is a plan view showing one side and the other side of the piezoelectric filter, and FIG. 9 is a perspective view of the conventional piezoelectric filters connected in cascade. Explanation of symbols, 1, 21...Piezoelectric filter, 2,
22...Piezoelectric substrate, 2a to 2f, 22a to 2
2f...Slit, 22g, 35...Slit (
elastic coupling damping means), 3, 4, 23, 24, 33
, 34... Tuning fork section, 5, 8, 25, 28... 2nd
Electrode, 6, 7, 26, 27...First electrode, 9, 1
0, 29, 30...Third electrode, 11...Fourth electrode, C2 , C3 ...Capacitor.
Claims (1)
とにより少なくとも２以上の音叉部を形成すると
共に各音叉部に対応させてそれぞれ複数の電極を
設け、各音叉部の間にこの音叉部への相互の圧電
振動の伝播を減衰させる弾性結合減衰手段を介在
させ、且つ上記各音叉部に対応する複数の電極を
カスケード接続してなることを特徴とする圧電フ
イルタ。 At least two or more tuning fork parts are formed by carving a plurality of slits in a single piezoelectric substrate, and a plurality of electrodes are provided corresponding to each tuning fork part, and a plurality of electrodes are provided between each tuning fork part. 1. A piezoelectric filter characterized in that a plurality of electrodes corresponding to each tuning fork portion are connected in cascade, with an elastic coupling damping means interposed therebetween for damping mutual propagation of piezoelectric vibrations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14114289U JPH0379531U (en) | 1989-12-06 | 1989-12-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14114289U JPH0379531U (en) | 1989-12-06 | 1989-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0379531U true JPH0379531U (en) | 1991-08-14 |
Family
ID=31688065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14114289U Pending JPH0379531U (en) | 1989-12-06 | 1989-12-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0379531U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5296841A (en) * | 1976-02-09 | 1977-08-15 | Ngk Spark Plug Co | Composite piezooelectric resonator |
| JPS5610723A (en) * | 1979-07-05 | 1981-02-03 | Suisse Horlogerie | Electronic element and method of manufacturing same |
| JPS5923910A (en) * | 1982-07-30 | 1984-02-07 | Toyo Commun Equip Co Ltd | Multistage connection monolithic filter |
| JPH01146416A (en) * | 1987-12-02 | 1989-06-08 | Murata Mfg Co Ltd | Piezoelectric resonator |
-
1989
- 1989-12-06 JP JP14114289U patent/JPH0379531U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5296841A (en) * | 1976-02-09 | 1977-08-15 | Ngk Spark Plug Co | Composite piezooelectric resonator |
| JPS5610723A (en) * | 1979-07-05 | 1981-02-03 | Suisse Horlogerie | Electronic element and method of manufacturing same |
| JPS5923910A (en) * | 1982-07-30 | 1984-02-07 | Toyo Commun Equip Co Ltd | Multistage connection monolithic filter |
| JPH01146416A (en) * | 1987-12-02 | 1989-06-08 | Murata Mfg Co Ltd | Piezoelectric resonator |
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