JP5023749B2 - 弾性表面波フィルタ - Google Patents
弾性表面波フィルタ Download PDFInfo
- Publication number
- JP5023749B2 JP5023749B2 JP2007068402A JP2007068402A JP5023749B2 JP 5023749 B2 JP5023749 B2 JP 5023749B2 JP 2007068402 A JP2007068402 A JP 2007068402A JP 2007068402 A JP2007068402 A JP 2007068402A JP 5023749 B2 JP5023749 B2 JP 5023749B2
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- JP
- Japan
- Prior art keywords
- electrode
- acoustic wave
- surface acoustic
- wave filter
- titanium layer
- 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.)
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- 238000010897 surface acoustic wave method Methods 0.000 title claims description 21
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 36
- 229910052719 titanium Inorganic materials 0.000 claims description 36
- 239000010936 titanium Substances 0.000 claims description 36
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 15
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WSMQKESQZFQMFW-UHFFFAOYSA-N 5-methyl-pyrazole-3-carboxylic acid Chemical compound CC1=CC(C(O)=O)=NN1 WSMQKESQZFQMFW-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 1
Images
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- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
2 櫛型電極
3 配線電極
5 (第1の)アルミニウム層
6 (第1の)チタン層
7 積層電極
8 (第2の)チタン層
9 (第2の)アルミニウム層
Claims (1)
- 複数の櫛型電極を組み合わせた弾性表面波フィルタであって、前記弾性表面波フィルタは、圧電基板と、この圧電基板上に設けられた櫛型電極と、前記櫛型電極に接続された配線電極を備え、
前記櫛型電極は前記圧電基板上に設けられた第1のチタン層と、この第1のチタン層上に設けられた第1のアルミニウム層を順に積み重ねた積層電極で形成し、
前記配線電極は、前記積層電極上にさらに第2のチタン層と、この第2のチタン層上に設けられた第2のアルミニウム層を配置して形成し、
前記第2のチタン層の厚みを前記第1のチタン層より厚くしたことを特徴とする弾性表面波フィルタ。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007068402A JP5023749B2 (ja) | 2007-03-16 | 2007-03-16 | 弾性表面波フィルタ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007068402A JP5023749B2 (ja) | 2007-03-16 | 2007-03-16 | 弾性表面波フィルタ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008235979A JP2008235979A (ja) | 2008-10-02 |
JP5023749B2 true JP5023749B2 (ja) | 2012-09-12 |
Family
ID=39908304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007068402A Active JP5023749B2 (ja) | 2007-03-16 | 2007-03-16 | 弾性表面波フィルタ |
Country Status (1)
Country | Link |
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JP (1) | JP5023749B2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5131117B2 (ja) * | 2008-09-24 | 2013-01-30 | 株式会社村田製作所 | 弾性波装置及びその製造方法 |
JP6166190B2 (ja) * | 2014-02-03 | 2017-07-19 | 京セラ株式会社 | 弾性波素子および弾性波装置 |
CN106031031B (zh) | 2014-02-18 | 2019-03-08 | 天工滤波方案日本有限公司 | 声波元件和使用声波元件的梯型滤波器 |
US10056878B2 (en) * | 2014-12-12 | 2018-08-21 | Taiyo Yuden Co., Ltd. | Acoustic wave device and method of fabricating the same |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3430745B2 (ja) * | 1995-11-08 | 2003-07-28 | 松下電器産業株式会社 | Sawデバイス |
JPH1141054A (ja) * | 1997-07-16 | 1999-02-12 | Toshiba Corp | 弾性表面波素子、弾性表面波素子の製造方法および接続装置 |
EP1030448B1 (en) * | 1998-05-19 | 2013-11-06 | Panasonic Corporation | Saw filter, antenna sharing device using the same, and mobile communication terminal using the same |
JP3865712B2 (ja) * | 2003-05-26 | 2007-01-10 | 富士通メディアデバイス株式会社 | 弾性表面波デバイス |
JP4066952B2 (ja) * | 2004-01-09 | 2008-03-26 | 株式会社村田製作所 | 電子部品素子、電子部品、及び通信機 |
JP4682657B2 (ja) * | 2005-03-22 | 2011-05-11 | パナソニック株式会社 | 弾性表面波デバイス |
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2007
- 2007-03-16 JP JP2007068402A patent/JP5023749B2/ja active Active
Also Published As
Publication number | Publication date |
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JP2008235979A (ja) | 2008-10-02 |
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