JPS6323823U - - Google Patents
Info
- Publication number
- JPS6323823U JPS6323823U JP11590986U JP11590986U JPS6323823U JP S6323823 U JPS6323823 U JP S6323823U JP 11590986 U JP11590986 U JP 11590986U JP 11590986 U JP11590986 U JP 11590986U JP S6323823 U JPS6323823 U JP S6323823U
- Authority
- JP
- Japan
- Prior art keywords
- acoustic wave
- surface acoustic
- transducer
- electrode
- wave transducer
- 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
- 238000010897 surface acoustic wave method Methods 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
第１図は本考案の一実施例の構成を示す平面図
、第２図は従来の弾性表面波フイルタの構成を示
す平面図、第３図は本考案並びに従来の弾性表面
波フイルタの損失特性を示す図。
１……圧電基板、１０……入力端子、１１，１
３……入力側弾性表面波フイルタ、１２，１４…
…弾性表面波、２０……出力端子、２１……出力
側弾性表面波変換器。
FIG. 1 is a plan view showing the configuration of an embodiment of the present invention, FIG. 2 is a plan view showing the configuration of a conventional surface acoustic wave filter, and FIG. 3 is a loss characteristic of the present invention and the conventional surface acoustic wave filter. Diagram showing. 1...Piezoelectric substrate, 10...Input terminal, 11,1
3... Input side surface acoustic wave filter, 12, 14...
...Surface acoustic wave, 20... Output terminal, 21... Output side surface acoustic wave transducer.
Claims (1)
のであつて且つ複数の電極指より構成された入力
側弾性表面波変換器と、弾性表面波を電気信号に
変換するためのものであつて且つ複数の電極指よ
り構成された出力側弾性表面波変換器とを、交互
且つ対称的に圧電基板上に多数配設してなる弾性
表面波フイルタにおいて、最外側に位置する入力
側もしくは出力側のいずれか一方の系統の前記弾
性表面変換器の電極指数をその内側に位置する同
一系統の前記弾性表面波変換器の電極指数より少
なくしたことを特徴とする弾性表面波フイルタ。 (2) 最外側の前記弾性表面波変換器の電極指数
をその内側に位置する同一系統の弾性表面波変換
器の電極指数の約√２／２倍となる如くしたこと
を特徴とする実用新案登録請求の範囲第(1)項記
載の弾性表面波フイルタ。[Claims for Utility Model Registration] (1) An input-side surface acoustic wave transducer for converting an electrical signal into a surface acoustic wave and comprising a plurality of electrode fingers; In a surface acoustic wave filter which is for converting into It is characterized in that the electrode index of the elastic surface transducer of either the input side or the output side system located on the outside is smaller than the electrode index of the surface acoustic wave transducer of the same system located on the inside thereof. Surface acoustic wave filter. (2) A utility model characterized in that the electrode index of the outermost surface acoustic wave transducer is approximately √2/2 times the electrode index of the surface acoustic wave transducer of the same type located inside the outermost surface acoustic wave transducer. A surface acoustic wave filter according to registered claim (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11590986U JPS6323823U (en) | 1986-07-30 | 1986-07-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11590986U JPS6323823U (en) | 1986-07-30 | 1986-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6323823U true JPS6323823U (en) | 1988-02-17 |
Family
ID=31000006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11590986U Pending JPS6323823U (en) | 1986-07-30 | 1986-07-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6323823U (en) |
-
1986
- 1986-07-30 JP JP11590986U patent/JPS6323823U/ja active Pending
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