CN100508382C - 声表面波滤波器 - Google Patents
声表面波滤波器 Download PDFInfo
- Publication number
- CN100508382C CN100508382C CNB2004800342592A CN200480034259A CN100508382C CN 100508382 C CN100508382 C CN 100508382C CN B2004800342592 A CNB2004800342592 A CN B2004800342592A CN 200480034259 A CN200480034259 A CN 200480034259A CN 100508382 C CN100508382 C CN 100508382C
- Authority
- CN
- China
- Prior art keywords
- mentioned
- interdigital transducer
- saw filter
- electrode
- refers
- 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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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/6436—Coupled resonator filters having one acoustic track only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02637—Details concerning reflective or coupling arrays
- H03H9/02685—Grating lines having particular arrangements
- H03H9/0274—Intra-transducers grating lines
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14544—Transducers of particular shape or position
- H03H9/14588—Horizontally-split transducers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6426—Combinations of the characteristics of different transducers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/644—Coupled resonator filters having two acoustic tracks
- H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
- H03H9/6469—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes
- H03H9/6473—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes the electrodes being electrically interconnected
Abstract
Description
电极指根数(根) | 间距(μm) | |
反射器电极207 | 35 | 2.404 |
第1IDT202 | 225 | 2.341 |
带状线电极301 | 35 | 2.411 |
第2IDT203 | 145 | 2.429 |
反射器电极207 | 35 | 2.418 |
Claims (22)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP392224/2003 | 2003-11-21 | ||
JP2003392224 | 2003-11-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1883113A CN1883113A (zh) | 2006-12-20 |
CN100508382C true CN100508382C (zh) | 2009-07-01 |
Family
ID=34616441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2004800342592A Active CN100508382C (zh) | 2003-11-21 | 2004-11-18 | 声表面波滤波器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7501917B2 (zh) |
JP (1) | JP4687462B2 (zh) |
KR (1) | KR101067395B1 (zh) |
CN (1) | CN100508382C (zh) |
WO (1) | WO2005050837A1 (zh) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005067141A1 (ja) * | 2004-01-09 | 2005-07-21 | Matsushita Electric Industrial Co., Ltd. | 弾性表面波共振子及びこれを用いた弾性表面波フィルタ |
JP2009088999A (ja) | 2007-09-28 | 2009-04-23 | Nippon Dempa Kogyo Co Ltd | 弾性波フィルタ |
JP4734436B2 (ja) * | 2008-04-11 | 2011-07-27 | 日本電波工業株式会社 | デュプレクサ |
JP5093402B2 (ja) * | 2009-04-07 | 2012-12-12 | 株式会社村田製作所 | 弾性境界波共振子及びラダー型フィルタ |
JP2011205625A (ja) * | 2010-03-02 | 2011-10-13 | Panasonic Corp | ラダー型フィルタ |
CN104467734B (zh) * | 2014-11-07 | 2017-10-20 | 深圳华远微电科技有限公司 | Gps和bds用声表面波滤波器及其小型化封装工艺 |
DE102015107231B4 (de) * | 2015-05-08 | 2021-09-16 | Snaptrack, Inc. | Kaskadierter Resonator |
CN105406834B (zh) * | 2015-11-19 | 2017-12-01 | 北京中讯四方科技股份有限公司 | 一种基于电容加权的扇形单相单向换能器声表滤波器 |
CN114039575A (zh) * | 2016-01-29 | 2022-02-11 | 京瓷株式会社 | 弹性波谐振器、弹性波滤波器、分波器及通信装置 |
JP6627816B2 (ja) * | 2016-06-08 | 2020-01-08 | 株式会社村田製作所 | マルチプレクサおよび高周波フロントエンドモジュール |
US11070194B2 (en) * | 2018-08-17 | 2021-07-20 | Qorvo Us, Inc. | Ladder-type surface acoustic wave device |
CN109802651A (zh) * | 2019-02-26 | 2019-05-24 | 上海龙旗科技股份有限公司 | 声表面波滤波装置及电子产品 |
WO2021060513A1 (ja) * | 2019-09-27 | 2021-04-01 | 株式会社村田製作所 | 弾性波装置 |
JP2021132361A (ja) * | 2020-02-21 | 2021-09-09 | 株式会社村田製作所 | 弾性波装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3436812B2 (ja) * | 1994-12-22 | 2003-08-18 | マルヤス工業株式会社 | 弾性表面波変換器 |
GB2296614B (en) * | 1994-12-23 | 1999-09-15 | Advanced Saw Prod Sa | Saw filter |
JPH08265099A (ja) * | 1995-03-20 | 1996-10-11 | Oki Electric Ind Co Ltd | 共振器型弾性表面波フィルタ |
JPH09270663A (ja) | 1996-01-29 | 1997-10-14 | Kyocera Corp | 弾性表面波装置 |
JP3377902B2 (ja) | 1996-02-22 | 2003-02-17 | 沖電気工業株式会社 | 弾性表面波フィルタ |
JPH09246911A (ja) | 1996-03-07 | 1997-09-19 | Oki Electric Ind Co Ltd | 共振器型弾性表面波フィルタ |
JPH10242799A (ja) * | 1997-02-26 | 1998-09-11 | Kyocera Corp | 弾性表面波フィルタ |
JPH1188112A (ja) | 1997-09-12 | 1999-03-30 | Fujitsu Ltd | 弾性表面波素子 |
JPH11163664A (ja) | 1997-11-28 | 1999-06-18 | Kyocera Corp | 弾性表面波フィルタ |
JP4138093B2 (ja) | 1998-09-08 | 2008-08-20 | エプソントヨコム株式会社 | 縦結合二重モードsawフィルタ |
DE19849782B4 (de) * | 1998-10-28 | 2004-09-30 | Epcos Ag | Oberflächenwellenanordnung mit zumindest zwei Oberflächenwellen-Strukturen |
JP3260347B2 (ja) | 1999-01-01 | 2002-02-25 | 富士通株式会社 | 弾性表面波素子 |
JP2001358555A (ja) * | 2000-06-09 | 2001-12-26 | Seiko Epson Corp | 弾性表面波共振子 |
WO2003003574A1 (fr) * | 2001-06-29 | 2003-01-09 | Matsushita Electric Industrial Co., Ltd. | Filtre a onde acoustique de surface |
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 |
DE10213277A1 (de) * | 2002-03-25 | 2003-10-16 | Epcos Ag | Multiport-Resonatorfilter |
-
2004
- 2004-11-18 US US10/577,141 patent/US7501917B2/en active Active
- 2004-11-18 CN CNB2004800342592A patent/CN100508382C/zh active Active
- 2004-11-18 JP JP2005515692A patent/JP4687462B2/ja active Active
- 2004-11-18 WO PCT/JP2004/017527 patent/WO2005050837A1/ja active Application Filing
- 2004-11-18 KR KR1020067009593A patent/KR101067395B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
JP4687462B2 (ja) | 2011-05-25 |
US7501917B2 (en) | 2009-03-10 |
WO2005050837A1 (ja) | 2005-06-02 |
CN1883113A (zh) | 2006-12-20 |
JPWO2005050837A1 (ja) | 2007-06-14 |
KR20060101487A (ko) | 2006-09-25 |
KR101067395B1 (ko) | 2011-09-27 |
US20070069837A1 (en) | 2007-03-29 |
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Legal Events
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: SKYWORKS PANASONIC FILTRATE SOLUTIONS JAPAN CO., L Free format text: FORMER OWNER: MATSUSHITA ELECTRIC INDUSTRIAL CO, LTD. Effective date: 20150123 |
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C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20150123 Address after: Osaka Japan Patentee after: PANASONIC CORPORATION Address before: Osaka Japan Patentee before: Matsushita Electric Industrial Co., Ltd. |
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C56 | Change in the name or address of the patentee | ||
CP01 | Change in the name or title of a patent holder |
Address after: Osaka Japan Patentee after: Japan Industrial Co., Ltd. Address before: Osaka Japan Patentee before: PANASONIC CORPORATION |