JP5028926B2 - 弾性表面波共振子 - Google Patents
弾性表面波共振子 Download PDFInfo
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- JP5028926B2 JP5028926B2 JP2006254323A JP2006254323A JP5028926B2 JP 5028926 B2 JP5028926 B2 JP 5028926B2 JP 2006254323 A JP2006254323 A JP 2006254323A JP 2006254323 A JP2006254323 A JP 2006254323A JP 5028926 B2 JP5028926 B2 JP 5028926B2
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Description
12 電極指
13 櫛型電極
14 交差領域
15 ダミー電極
16 ダミー領域
Claims (5)
- 対向する一対のバスバーと、それぞれのバスバーから他方のバスバー側へ交互に延出された複数の電極指を有する櫛型電極とを備え、前記それぞれのバスバーから延びる電極指が交差する前記櫛型電極の交差領域における外側部分の交差幅を内側部分の交差幅より小さく設定し、前記電極指の延伸方向に他方のバスバーから延出したダミー電極を配置するとともに、このダミー電極が設けられた部分をダミー領域とし、前記ダミー領域のメタライゼイションレシオを前記交差領域のメタライゼイションレシオより大きくしたことを特徴とする一端子対の弾性表面波共振子。
- 前記交差領域の放射コンダクタンスのピーク周波数を前記ダミー領域の反射特性の反射領域内に位置させた請求項1に記載の弾性表面波共振子。
- ダミー電極の先端辺を弾性波の進行方向と平行にした請求項1または2に記載の弾性表面波共振子。
- 前記ダミー領域における前記電極指の幅を前記交差領域における前記電極指の幅と同等にし、前記ダミー電極の幅を前記電極指の幅よりも大きくした請求項1から3のいずれかに記載の弾性表面波共振子。
- 前記ダミー領域における前記電極指の幅を前記ダミー電極の幅と同じにした請求項1から3のいずれかに記載の弾性表面波共振子。
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JP2006254323A JP5028926B2 (ja) | 2006-09-20 | 2006-09-20 | 弾性表面波共振子 |
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JP2006254323A JP5028926B2 (ja) | 2006-09-20 | 2006-09-20 | 弾性表面波共振子 |
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JP2008078883A JP2008078883A (ja) | 2008-04-03 |
JP5028926B2 true JP5028926B2 (ja) | 2012-09-19 |
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JP2006254323A Active JP5028926B2 (ja) | 2006-09-20 | 2006-09-20 | 弾性表面波共振子 |
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Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2017051874A1 (ja) * | 2015-09-25 | 2017-03-30 | 京セラ株式会社 | 弾性波素子および弾性波装置 |
US10361678B2 (en) | 2015-12-14 | 2019-07-23 | Taiyo Yuden Co., Ltd. | Acoustic wave resonator, filter, and duplexer |
JP6632481B2 (ja) | 2016-06-22 | 2020-01-22 | 太陽誘電株式会社 | 弾性波共振器、フィルタおよびマルチプレクサ |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS63110809A (ja) * | 1986-10-29 | 1988-05-16 | Matsushita Electric Ind Co Ltd | 弾性表面波伝播素子 |
JPH06164297A (ja) * | 1992-02-12 | 1994-06-10 | Kokusai Electric Co Ltd | 弾性表面波共振子 |
JP3289410B2 (ja) * | 1993-06-30 | 2002-06-04 | 株式会社村田製作所 | 表面波素子 |
JP2003198317A (ja) * | 2001-12-21 | 2003-07-11 | Fujitsu Media Device Kk | 弾性表面波共振子及び弾性表面波フィルタ |
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