JP2013106171A - 弾性波装置 - Google Patents
弾性波装置 Download PDFInfo
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- JP2013106171A JP2013106171A JP2011248334A JP2011248334A JP2013106171A JP 2013106171 A JP2013106171 A JP 2013106171A JP 2011248334 A JP2011248334 A JP 2011248334A JP 2011248334 A JP2011248334 A JP 2011248334A JP 2013106171 A JP2013106171 A JP 2013106171A
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- 239000000758 substrate Substances 0.000 claims abstract description 28
- 238000003780 insertion Methods 0.000 abstract description 7
- 230000037431 insertion Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 5
- WSMQKESQZFQMFW-UHFFFAOYSA-N 5-methyl-pyrazole-3-carboxylic acid Chemical compound CC1=CC(C(O)=O)=NN1 WSMQKESQZFQMFW-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000010897 surface acoustic wave method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
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Abstract
【解決手段】弾性波の逆速度面が凹となる圧電基板12と、この圧電基板の表面に設けられた一対の櫛形電極15を有する弾性波共振器13とを備え、前記一対の櫛形電極は、対向する一対の共通電極16と、前記それぞれの共通電極から他方の共通電極側に交互に延出された複数の電極指17とを有し、前記電極指が交差する領域を交差領域とし、前記電極指の先端と対向する櫛形電極との間のギャップ19を結ぶ領域をギャップ領域としたとき、前記交差領域における圧電基板の表面の高さよりも圧電基板の表面の高さが低くなるように前記ギャップ領域に段差25を設けたものである。
【選択図】図1
Description
12 圧電基板
13 弾性波共振器
15 櫛形電極
16 共通電極
17 電極指
18 ダミー電極指
19 ギャップ
21 交差領域
22 ダミー領域
23 ギャップ領域
24 凹部
25 段差
Claims (2)
- 弾性波の逆速度面が凹となる圧電基板と、この圧電基板の表面に設けられた一対の櫛形電極を有する弾性波共振器とを備え、前記一対の櫛形電極は、対向する一対の共通電極と、前記それぞれの共通電極から他方の共通電極側に交互に延出された複数の電極指とを有し、前記電極指が交差する領域を交差領域とし、前記電極指の先端と対向する櫛形電極との間のギャップを結ぶ領域をギャップ領域としたとき、前記交差領域における圧電基板の表面の高さよりも圧電基板の表面の高さが低くなるように前記ギャップ領域に段差を設けた弾性波装置。
- 前記一対の櫛形電極は、前記電極指の延伸方向に他方の共通電極から延出したダミー電極指を有し、前記ダミー電極指を設けたダミー領域における圧電基板の表面の高さを、前記交差領域における圧電基板の表面の高さよりも低くした請求項1記載の弾性波装置。
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JP2011248334A JP5860675B2 (ja) | 2011-11-14 | 2011-11-14 | 弾性波装置 |
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JP2011248334A JP5860675B2 (ja) | 2011-11-14 | 2011-11-14 | 弾性波装置 |
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JP2013106171A true JP2013106171A (ja) | 2013-05-30 |
JP2013106171A5 JP2013106171A5 (ja) | 2015-01-15 |
JP5860675B2 JP5860675B2 (ja) | 2016-02-16 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10361678B2 (en) | 2015-12-14 | 2019-07-23 | Taiyo Yuden Co., Ltd. | Acoustic wave resonator, filter, and duplexer |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53125792A (en) * | 1977-04-11 | 1978-11-02 | Nippon Telegr & Teleph Corp <Ntt> | Resonator for elastic surface wave |
JPH11298286A (ja) * | 1998-04-10 | 1999-10-29 | Toyo Commun Equip Co Ltd | 弾性表面波導波路構造及びそれを用いたデバイス |
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2011
- 2011-11-14 JP JP2011248334A patent/JP5860675B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53125792A (en) * | 1977-04-11 | 1978-11-02 | Nippon Telegr & Teleph Corp <Ntt> | Resonator for elastic surface wave |
JPH11298286A (ja) * | 1998-04-10 | 1999-10-29 | Toyo Commun Equip Co Ltd | 弾性表面波導波路構造及びそれを用いたデバイス |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10361678B2 (en) | 2015-12-14 | 2019-07-23 | Taiyo Yuden Co., Ltd. | Acoustic wave resonator, filter, and duplexer |
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JP5860675B2 (ja) | 2016-02-16 |
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