JPH01137624U - - Google Patents
Info
- Publication number
- JPH01137624U JPH01137624U JP3492888U JP3492888U JPH01137624U JP H01137624 U JPH01137624 U JP H01137624U JP 3492888 U JP3492888 U JP 3492888U JP 3492888 U JP3492888 U JP 3492888U JP H01137624 U JPH01137624 U JP H01137624U
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- side electrode
- acoustic wave
- wave device
- lattice
- 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
- 239000000758 substrate Substances 0.000 claims description 5
- 238000010897 surface acoustic wave method Methods 0.000 claims description 3
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 1
Landscapes
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
第１図ないし第４図は本考案に係る弾性表面波
デバイスの一実施例を示し、第１図は平面図、第
２図は基板底面に形成された溝の条件式を説明す
るための断面図、第３図は底面図、第４図は周波
数特性を示すグラフである。第５図は比較例の周
波数特性を示すグラフである。
１…基板、２，３…電極、４…溝、Ａ…表面波
伝搬方向。
1 to 4 show an embodiment of the surface acoustic wave device according to the present invention, FIG. 1 is a plan view, and FIG. 2 is a cross-sectional view for explaining the conditional expression of the groove formed on the bottom surface of the substrate. 3 is a bottom view, and FIG. 4 is a graph showing frequency characteristics. FIG. 5 is a graph showing the frequency characteristics of a comparative example. 1... Substrate, 2, 3... Electrode, 4... Groove, A... Surface wave propagation direction.
Claims (1)
る弾性表面波デバイスにおいて、 前記基板底面に略菱形をなす格子状の溝を、該
格子の一方の対角線が表面波の伝搬方向と略一致
する様に設け、 前記対角線寸法Ｗと溝の深さＤと基板の厚さＴ
と入出力電極の実質中心間距離Ｌとが、（Ｔ／Ｄ
）≦（Ｌ／Ｗ）の関係を満足すること、 を特徴とする弾性表面波デバイス。[Claims for Utility Model Registration] In a surface acoustic wave device comprising an input side electrode and an output side electrode provided on the surface of a substrate, a substantially rhombic lattice-shaped groove is formed on the bottom surface of the substrate, one diagonal of the lattice is on the surface. The diagonal dimension W, the depth D of the groove, and the thickness T of the substrate are provided so as to substantially coincide with the wave propagation direction.
and the actual distance L between the centers of the input and output electrodes is (T/D
)≦(L/W). A surface acoustic wave device characterized by satisfying the following relationship.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3492888U JPH01137624U (en) | 1988-03-15 | 1988-03-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3492888U JPH01137624U (en) | 1988-03-15 | 1988-03-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01137624U true JPH01137624U (en) | 1989-09-20 |
Family
ID=31261597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3492888U Pending JPH01137624U (en) | 1988-03-15 | 1988-03-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01137624U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004095699A1 (en) * | 2003-04-18 | 2004-11-04 | Murata Manufacturing Co., Ltd. | Elastic boundary wave device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5435657A (en) * | 1977-08-26 | 1979-03-15 | Hitachi Ltd | Surface slip wave resonator filter |
| JPS6240811A (en) * | 1985-08-17 | 1987-02-21 | Tdk Corp | Surface acoustic wave device |
| JPS62294313A (en) * | 1986-06-13 | 1987-12-21 | Murata Mfg Co Ltd | Manufacture of surface wave filter |
-
1988
- 1988-03-15 JP JP3492888U patent/JPH01137624U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5435657A (en) * | 1977-08-26 | 1979-03-15 | Hitachi Ltd | Surface slip wave resonator filter |
| JPS6240811A (en) * | 1985-08-17 | 1987-02-21 | Tdk Corp | Surface acoustic wave device |
| JPS62294313A (en) * | 1986-06-13 | 1987-12-21 | Murata Mfg Co Ltd | Manufacture of surface wave filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004095699A1 (en) * | 2003-04-18 | 2004-11-04 | Murata Manufacturing Co., Ltd. | Elastic boundary wave device |
| US7453184B2 (en) | 2003-04-18 | 2008-11-18 | Murata Manufacturing Co., Ltd. | Boundary acoustic wave device |
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