JPH02100336U - - Google Patents
Info
- Publication number
- JPH02100336U JPH02100336U JP840489U JP840489U JPH02100336U JP H02100336 U JPH02100336 U JP H02100336U JP 840489 U JP840489 U JP 840489U JP 840489 U JP840489 U JP 840489U JP H02100336 U JPH02100336 U JP H02100336U
- Authority
- JP
- Japan
- Prior art keywords
- surface acoustic
- piezoelectric substrate
- acoustic wave
- wave device
- acoustic waves
- 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 13
- 239000000758 substrate Substances 0.000 claims description 6
- 239000006096 absorbing agent Substances 0.000 claims description 2
Description
第１図ａ，ｂは本考案の第１の実施例における
弾性表面波装置を示し、同図ａはその平面図及び
同図ｂは同図ａのＡ―Ａ線断面図、第２図は従来
の一般的な弾性表面波装置の平面図、第３図ａ，
ｂは本考案の第２の実施例における弾性表面波装
置を示し、同図ａはその平面図及び同図ｂは同図
ａのＢ―Ｂ線断面図である。
１１，２１……弾性表面波装置、１２……圧電
基板、１３……出力電極、１４……入力電極、１
５，１６，２２，２３……伝導膜、１７，１８，
２４，２５……吸音体。
1A and 1B show a surface acoustic wave device according to a first embodiment of the present invention, FIG. 1A is a plan view thereof, FIG. A plan view of a conventional general surface acoustic wave device, Fig. 3a,
FIG. 1B shows a surface acoustic wave device according to a second embodiment of the present invention, FIG. 1A is a plan view thereof, and FIG. 11, 21... surface acoustic wave device, 12... piezoelectric substrate, 13... output electrode, 14... input electrode, 1
5, 16, 22, 23... conductive film, 17, 18,
24, 25...Sound absorber.
Claims (1)
を励振する出力電極と、 前記圧電基板の表面に前記出力電極と所定間隔
をおいて対向配置され前記弾性表面波を受信して
電気信号に変換する入力電極とを備えた弾性表面
波装置において、 対向する前記出力電極と前記入力電極のそれぞ
れの外側における前記圧電基板表面に設けられた
所定形状の伝導膜で形成された、前記弾性表面波
に対する音波レンズ系と、 前記圧電基板の表面両端部付近に設けられ、前
記音波レンズ系を経た前記弾性表面波を吸収する
吸音体とを、 備えたことを特徴とする弾性表面波装置。[Claims for Utility Model Registration] A piezoelectric substrate through which surface acoustic waves propagate, an output electrode provided on the surface of the piezoelectric substrate to excite the surface acoustic waves, and a predetermined interval between the output electrode and the surface of the piezoelectric substrate. In a surface acoustic wave device, the surface acoustic wave device includes input electrodes that are arranged opposite to each other and receive the surface acoustic wave and convert it into an electric signal, and the surface acoustic wave device is provided on the surface of the piezoelectric substrate on the outside of each of the output electrode and the input electrode that face each other. a sound wave lens system for the surface acoustic waves formed of a conductive film having a predetermined shape; and a sound absorber provided near both ends of the surface of the piezoelectric substrate to absorb the surface acoustic waves that have passed through the sound wave lens system. A surface acoustic wave device comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP840489U JPH02100336U (en) | 1989-01-27 | 1989-01-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP840489U JPH02100336U (en) | 1989-01-27 | 1989-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02100336U true JPH02100336U (en) | 1990-08-09 |
Family
ID=31214253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP840489U Pending JPH02100336U (en) | 1989-01-27 | 1989-01-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02100336U (en) |
-
1989
- 1989-01-27 JP JP840489U patent/JPH02100336U/ja active Pending
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