DE602005008632D1 - Symmetrie-saw-filter - Google Patents
Symmetrie-saw-filterInfo
- Publication number
- DE602005008632D1 DE602005008632D1 DE602005008632T DE602005008632T DE602005008632D1 DE 602005008632 D1 DE602005008632 D1 DE 602005008632D1 DE 602005008632 T DE602005008632 T DE 602005008632T DE 602005008632 T DE602005008632 T DE 602005008632T DE 602005008632 D1 DE602005008632 D1 DE 602005008632D1
- Authority
- DE
- Germany
- Prior art keywords
- idt
- saw filter
- segment
- wiring lines
- filter element
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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 elements; 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
- H03H9/14576—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger
- H03H9/14582—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger the last fingers having a different pitch
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/0023—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output
- H03H9/0028—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices
- H03H9/0047—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks
- H03H9/0052—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks being electrically cascaded
- H03H9/0057—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks being electrically cascaded the balanced terminals being on the same side of the tracks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/0023—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output
- H03H9/0028—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices
- H03H9/0047—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks
- H03H9/0052—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks being electrically cascaded
- H03H9/0061—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks being electrically cascaded the balanced terminals being on opposite sides of the tracks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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 elements; Electromechanical resonators
- H03H9/25—Constructional features of resonators using surface acoustic waves
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Thermistors And Varistors (AREA)
- Gyroscopes (AREA)
- Harvester Elements (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004320551 | 2004-11-04 | ||
| PCT/JP2005/018756 WO2006049000A1 (ja) | 2004-11-04 | 2005-10-12 | バランス型ｓａｗフィルタ |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE602005008632D1 true DE602005008632D1 (de) | 2008-09-11 |
Family
ID=36319014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE602005008632T Active DE602005008632D1 (de) | 2004-11-04 | 2005-10-12 | Symmetrie-saw-filter |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7358832B2 (de) |
| EP (1) | EP1808961B1 (de) |
| JP (1) | JP4412326B2 (de) |
| KR (1) | KR100861219B1 (de) |
| CN (1) | CN101044678B (de) |
| AT (1) | ATE403270T1 (de) |
| DE (1) | DE602005008632D1 (de) |
| WO (1) | WO2006049000A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100936896B1 (ko) * | 2004-10-22 | 2010-01-14 | 가부시키가이샤 무라타 세이사쿠쇼 | 밸런스형 탄성 표면파 필터 |
| JP4412292B2 (ja) * | 2006-02-06 | 2010-02-10 | セイコーエプソン株式会社 | 弾性表面波装置および電子機器 |
| EP2063530B1 (de) * | 2006-10-31 | 2013-08-21 | Murata Manufacturing Co. Ltd. | Oberflächenwellenfiltergerät und duplexer |
| JP5135763B2 (ja) * | 2006-11-01 | 2013-02-06 | 株式会社村田製作所 | 弾性表面波フィルタ装置及びデュプレクサ |
| US8031034B1 (en) * | 2007-08-27 | 2011-10-04 | Triquint Semiconductor, Inc. | Surface acoustic wave filter and method for improved rejection |
| JP5099330B2 (ja) * | 2007-09-07 | 2012-12-19 | Ｔｄｋ株式会社 | 弾性表面波装置 |
| EP2197108B1 (de) * | 2008-03-27 | 2013-01-30 | Murata Manufacturing Co. Ltd. | Elastikwellenfilteranordnung |
| EP2830217B1 (de) * | 2012-03-22 | 2018-02-21 | Murata Manufacturing Co., Ltd. | Elastischer oberflächenwellenfilter mit vertikal gekoppeltem resonator |
| JP6119853B2 (ja) | 2013-06-13 | 2017-04-26 | 株式会社村田製作所 | 弾性表面波フィルタ装置およびデュプレクサ |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3302477B2 (ja) | 1993-12-20 | 2002-07-15 | キンセキ株式会社 | 弾性表面波フィルタ |
| JPH08265087A (ja) * | 1995-03-22 | 1996-10-11 | Mitsubishi Electric Corp | 弾性表面波フィルタ |
| WO1997000556A1 (en) * | 1995-06-16 | 1997-01-03 | Northern Telecom Limited | Cascaded surface wave device filters |
| JPH09167936A (ja) * | 1995-10-13 | 1997-06-24 | Fujitsu Ltd | 弾性表面波装置 |
| GB2306821B (en) * | 1995-11-03 | 2000-05-31 | Advanced Saw Prod Sa | Electro-acoustic device |
| JP3186604B2 (ja) * | 1996-10-09 | 2001-07-11 | 株式会社村田製作所 | 弾性表面波フィルタ装置 |
| JPH1197966A (ja) | 1997-09-22 | 1999-04-09 | Tdk Corp | 弾性表面波フィルタ |
| JP2000091883A (ja) | 1998-09-11 | 2000-03-31 | Hitachi Media Electoronics Co Ltd | 弾性表面波フィルタ |
| DE19938748B4 (de) * | 1999-08-16 | 2007-02-01 | Epcos Ag | Dualmode-Oberflächenwellen-Filter mit verbesserter Symmetrie und erhöhter Sperrdämpfung |
| JP3358615B2 (ja) * | 2000-06-26 | 2002-12-24 | 株式会社村田製作所 | 縦結合共振子型弾性表面波フィルタ |
| JP3391347B2 (ja) * | 2000-06-26 | 2003-03-31 | 株式会社村田製作所 | 縦結合共振子型弾性表面波フィルタ |
| TW483238B (en) * | 2000-06-30 | 2002-04-11 | Fujitsu Media Devices Ltd | Surface acoustic wave device |
| JP2002300004A (ja) | 2001-03-29 | 2002-10-11 | Kyocera Corp | 弾性表面波フィルタ |
| EP1249934B1 (de) * | 2001-04-09 | 2013-07-31 | Murata Manufacturing Co., Ltd. | Akustische Oberflächenwellenanordnung und Kommunikationseinheit |
| JP3952907B2 (ja) * | 2002-08-28 | 2007-08-01 | 株式会社村田製作所 | 弾性表面波装置、通信装置 |
| JP3931767B2 (ja) * | 2002-08-29 | 2007-06-20 | 株式会社村田製作所 | 弾性表面波装置、通信装置 |
| EP1670138B1 (de) * | 2003-09-25 | 2009-05-27 | Murata Manufacturing Co., Ltd. | Akustischer wellenfilter und kommunikationseinheit |
| KR100936896B1 (ko) * | 2004-10-22 | 2010-01-14 | 가부시키가이샤 무라타 세이사쿠쇼 | 밸런스형 탄성 표면파 필터 |
-
2005
- 2005-10-12 CN CN2005800357624A patent/CN101044678B/zh active Active
- 2005-10-12 JP JP2006542921A patent/JP4412326B2/ja active Active
- 2005-10-12 WO PCT/JP2005/018756 patent/WO2006049000A1/ja active IP Right Grant
- 2005-10-12 EP EP05793718A patent/EP1808961B1/de active Active
- 2005-10-12 DE DE602005008632T patent/DE602005008632D1/de active Active
- 2005-10-12 KR KR1020077010163A patent/KR100861219B1/ko active IP Right Grant
- 2005-10-12 AT AT05793718T patent/ATE403270T1/de not_active IP Right Cessation
-
2007
- 2007-04-09 US US11/733,068 patent/US7358832B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| US20070182511A1 (en) | 2007-08-09 |
| ATE403270T1 (de) | 2008-08-15 |
| JPWO2006049000A1 (ja) | 2008-05-22 |
| CN101044678B (zh) | 2010-05-05 |
| EP1808961A4 (de) | 2007-12-05 |
| KR100861219B1 (ko) | 2008-09-30 |
| US7358832B2 (en) | 2008-04-15 |
| EP1808961A1 (de) | 2007-07-18 |
| KR20070057270A (ko) | 2007-06-04 |
| JP4412326B2 (ja) | 2010-02-10 |
| WO2006049000A1 (ja) | 2006-05-11 |
| EP1808961B1 (de) | 2008-07-30 |
| CN101044678A (zh) | 2007-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition |