JPH0382922U - - Google Patents
Info
- Publication number
- JPH0382922U JPH0382922U JP14352989U JP14352989U JPH0382922U JP H0382922 U JPH0382922 U JP H0382922U JP 14352989 U JP14352989 U JP 14352989U JP 14352989 U JP14352989 U JP 14352989U JP H0382922 U JPH0382922 U JP H0382922U
- Authority
- JP
- Japan
- Prior art keywords
- surface acoustic
- propagation path
- acoustic wave
- input
- 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 16
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims 3
- 239000006096 absorbing agent Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
第１図は本考案の第１の実施例を示す弾性表面
波装置の平面図、第２図は従来の弾性表面波装置
の平面図、第３図は第２図の減衰量−周波数特性
図、第４図は第２図の部分断面図、第５図は本考
案の第２の実施例を示す弾性表面波装置の平面図
、第６図は本考案の第３の実施例を示す弾性表面
波装置の平面図である。
２１，２１ａ，２１ｂ……弾性表面波装置、２
２……圧電基板、２３……入力端子、２４……出
力端子、２５−１，２５−２……入力電極、２６
−１〜２６−３……出力電極、２７……コンデン
サ、２８……配線パターン、２８ａ……交差箇所
、２９……アースパターン、３０，３２……ボン
デイングワイヤ、Ｗ１１……弾性表面波。
Fig. 1 is a plan view of a surface acoustic wave device showing a first embodiment of the present invention, Fig. 2 is a plan view of a conventional surface acoustic wave device, and Fig. 3 is an attenuation-frequency characteristic diagram of Fig. 2. , FIG. 4 is a partial sectional view of FIG. 2, FIG. 5 is a plan view of a surface acoustic wave device showing a second embodiment of the present invention, and FIG. 6 is a plan view of a surface acoustic wave device showing a third embodiment of the present invention. FIG. 2 is a plan view of the surface wave device. 21, 21a, 21b...Surface acoustic wave device, 2
2... Piezoelectric substrate, 23... Input terminal, 24... Output terminal, 25-1, 25-2... Input electrode, 26
-1 to 26-3...Output electrode, 27...Capacitor, 28...Wiring pattern, 28a...Intersection point, 29...Earth pattern, 30, 32...Bonding wire, W11...Surface acoustic wave.
Claims (1)
及び配線パターンを介して入力される電気信号を
弾性表面波に変換し、該弾性表面波を該伝搬路に
沿つて伝搬させる１つまたは複数の入力電極と、 前記伝搬路上に前記入力電極と所定間隔隔てて
対向配置され前記弾性表面波を電気信号に変換し
その電気信号を前記配線パターンを介して出力端
子へ出力する出力電極と、 前記配線パターンを介して前記入力端子及び出
力端子間に並列接続されたコンデンサとが、 弾性表面波伝搬用の圧電基板の表面に形成され
た弾性表面波装置において、 前記コンデンサを、前記伝搬路からずらした位
置に配置し、かつ耐振用の金属膜で形成すると共
に、 前記配線パターンにおける前記伝搬路とを交差
箇所を、前記耐振用の金属膜で形成したことを特
徴とする弾性表面波装置。 ２ 請求項１記載の弾性表面波装置において、 前記入力電極及び出力電極と前記交差箇所との
間における前記伝搬路上に、弾性表面波吸収用の
吸音体を形成したことを特徴とする弾性表面波装
置。 ３ 請求項１記載の弾性表面波装置において、 前記交差箇所は、前記金属膜に代えて、 前記圧電基板の表面から離間して配線されるボ
ンデイングワイヤで、 構成したことを特徴とする弾性表面波装置。[Claims for Utility Model Registration] 1. Electrical signals formed on the propagation path of surface acoustic waves and input through input terminals and wiring patterns are converted into surface acoustic waves, and the surface acoustic waves are transmitted along the propagation path. one or more input electrodes, which are arranged on the propagation path to face the input electrodes at a predetermined interval, convert the surface acoustic waves into electrical signals, and send the electrical signals to the output terminals via the wiring pattern; In a surface acoustic wave device formed on a surface of a piezoelectric substrate for surface acoustic wave propagation, an output electrode to output, and a capacitor connected in parallel between the input terminal and the output terminal via the wiring pattern, the capacitor is arranged at a position shifted from the propagation path and is formed of a metal film for vibration resistance, and a portion of the wiring pattern that intersects with the propagation path is formed of the metal film for vibration resistance. surface acoustic wave device. 2. The surface acoustic wave device according to claim 1, wherein a sound absorber for absorbing surface acoustic waves is formed on the propagation path between the input electrode, the output electrode, and the intersection point. Device. 3. The surface acoustic wave device according to claim 1, wherein the intersection point is configured with a bonding wire wired apart from the surface of the piezoelectric substrate instead of the metal film. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14352989U JPH0382922U (en) | 1989-12-12 | 1989-12-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14352989U JPH0382922U (en) | 1989-12-12 | 1989-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0382922U true JPH0382922U (en) | 1991-08-23 |
Family
ID=31690298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14352989U Pending JPH0382922U (en) | 1989-12-12 | 1989-12-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0382922U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007208516A (en) * | 2006-01-31 | 2007-08-16 | Epson Toyocom Corp | Method for manufacturing surface acoustic wave device, and surface acoustic wave device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5636816A (en) * | 1979-08-30 | 1981-04-10 | Sprecher & Schuh Ag | Gas blast switch |
| JPS56160123A (en) * | 1980-05-15 | 1981-12-09 | Toshiba Corp | Elastic surface wave device |
| JPS5829626U (en) * | 1981-08-24 | 1983-02-25 | 石川島播磨重工業株式会社 | Roller gate for selective water intake |
| JPH01303910A (en) * | 1988-06-01 | 1989-12-07 | Hitachi Ltd | Solid-state electronic element, its manufacture and device utilizing the element |
-
1989
- 1989-12-12 JP JP14352989U patent/JPH0382922U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5636816A (en) * | 1979-08-30 | 1981-04-10 | Sprecher & Schuh Ag | Gas blast switch |
| JPS56160123A (en) * | 1980-05-15 | 1981-12-09 | Toshiba Corp | Elastic surface wave device |
| JPS5829626U (en) * | 1981-08-24 | 1983-02-25 | 石川島播磨重工業株式会社 | Roller gate for selective water intake |
| JPH01303910A (en) * | 1988-06-01 | 1989-12-07 | Hitachi Ltd | Solid-state electronic element, its manufacture and device utilizing the element |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007208516A (en) * | 2006-01-31 | 2007-08-16 | Epson Toyocom Corp | Method for manufacturing surface acoustic wave device, and surface acoustic wave device |
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