JP4232762B2 - 弾性表面波素子 - Google Patents
弾性表面波素子 Download PDFInfo
- Publication number
- JP4232762B2 JP4232762B2 JP2005178283A JP2005178283A JP4232762B2 JP 4232762 B2 JP4232762 B2 JP 4232762B2 JP 2005178283 A JP2005178283 A JP 2005178283A JP 2005178283 A JP2005178283 A JP 2005178283A JP 4232762 B2 JP4232762 B2 JP 4232762B2
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- Prior art keywords
- electrode
- surface acoustic
- acoustic wave
- filter
- saw
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Description
本発明は、挿入損失の小さく広帯域の通過帯域を備えた弾性表面波素子を提供することを目的とする。
Claims (2)
- 弾性表面波の伝搬方向と平行に並設した一対のすだれ状電極と、これらすだれ状電極の両側に設けた反射器とを有する弾性表面波素子であって、
前記各すだれ状電極の一方の電極部を構成する複数の電極指の基端を相互に接続した接続部を共通にするとともに、
前記各電極指は、前記接続部と交わる複数の直線部と、これら直線部間に設けた折り曲げ部とからなり、
前記すだれ状電極に形成された前記折り曲げ部は、この折り曲げ部の一端側と他端側とでλ/2(λ:前記弾性表面波の波長)ずれ、前記一端側に接続する前記直線部と前記他端側に接続する前記直線部との間にλ/2の間隔を形成した、
ことを特徴とする弾性表面波素子。 - 前記すだれ状電極の前記接続部を共通にした部分は、前記反射器と電気的に接続していることを特徴とする請求項1に記載の弾性表面波素子。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005178283A JP4232762B2 (ja) | 2004-07-22 | 2005-06-17 | 弾性表面波素子 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004214392 | 2004-07-22 | ||
JP2005178283A JP4232762B2 (ja) | 2004-07-22 | 2005-06-17 | 弾性表面波素子 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006060777A JP2006060777A (ja) | 2006-03-02 |
JP4232762B2 true JP4232762B2 (ja) | 2009-03-04 |
Family
ID=36107847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005178283A Expired - Fee Related JP4232762B2 (ja) | 2004-07-22 | 2005-06-17 | 弾性表面波素子 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4232762B2 (ja) |
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2005
- 2005-06-17 JP JP2005178283A patent/JP4232762B2/ja not_active Expired - Fee Related
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JP2006060777A (ja) | 2006-03-02 |
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