ATE403270T1 - Symmetrie-saw-filter - Google Patents
Symmetrie-saw-filterInfo
- Publication number
- ATE403270T1 ATE403270T1 AT05793718T AT05793718T ATE403270T1 AT E403270 T1 ATE403270 T1 AT E403270T1 AT 05793718 T AT05793718 T AT 05793718T AT 05793718 T AT05793718 T AT 05793718T AT E403270 T1 ATE403270 T1 AT E403270T1
- Authority
- AT
- Austria
- Prior art keywords
- idt
- saw filter
- segment
- wiring lines
- filter element
- Prior art date
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)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
- Gyroscopes (AREA)
- Harvester Elements (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004320551 | 2004-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE403270T1 true ATE403270T1 (de) | 2008-08-15 |
Family
ID=36319014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT05793718T ATE403270T1 (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 |
|---|---|---|---|---|
| ATE432555T1 (de) * | 2004-10-22 | 2009-06-15 | Murata Manufacturing Co | Elastik-oberflächenwellenfilter des ausgleichstyps |
| 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 |
| CN101874348B (zh) * | 2008-03-27 | 2013-11-06 | 株式会社村田制作所 | 弹性波滤波装置 |
| JP5862761B2 (ja) * | 2012-03-22 | 2016-02-16 | 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 |
| WO2014199682A1 (ja) | 2013-06-13 | 2014-12-18 | 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 |
| US5790000A (en) * | 1995-06-16 | 1998-08-04 | Northern Telecom Limited | Cascaded surface wave device filters providing balanced and unbalanced signal connections |
| 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 |
| 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 |
| 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 |
| 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 |
| US6815868B2 (en) * | 2001-04-09 | 2004-11-09 | Murata Manufacturing Co., Ltd. | Surface acoustic wave apparatus and communication unit |
| 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 |
| ATE432555T1 (de) * | 2004-10-22 | 2009-06-15 | Murata Manufacturing Co | Elastik-oberflächenwellenfilter des ausgleichstyps |
-
2005
- 2005-10-12 AT AT05793718T patent/ATE403270T1/de not_active IP Right Cessation
- 2005-10-12 KR KR1020077010163A patent/KR100861219B1/ko not_active Expired - Fee Related
- 2005-10-12 CN CN2005800357624A patent/CN101044678B/zh not_active Expired - Lifetime
- 2005-10-12 EP EP05793718A patent/EP1808961B1/de not_active Expired - Lifetime
- 2005-10-12 WO PCT/JP2005/018756 patent/WO2006049000A1/ja not_active Ceased
- 2005-10-12 JP JP2006542921A patent/JP4412326B2/ja not_active Expired - Lifetime
- 2005-10-12 DE DE602005008632T patent/DE602005008632D1/de not_active Expired - Lifetime
-
2007
- 2007-04-09 US US11/733,068 patent/US7358832B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP4412326B2 (ja) | 2010-02-10 |
| KR100861219B1 (ko) | 2008-09-30 |
| US7358832B2 (en) | 2008-04-15 |
| WO2006049000A1 (ja) | 2006-05-11 |
| DE602005008632D1 (de) | 2008-09-11 |
| CN101044678A (zh) | 2007-09-26 |
| KR20070057270A (ko) | 2007-06-04 |
| EP1808961A4 (de) | 2007-12-05 |
| US20070182511A1 (en) | 2007-08-09 |
| EP1808961A1 (de) | 2007-07-18 |
| EP1808961B1 (de) | 2008-07-30 |
| JPWO2006049000A1 (ja) | 2008-05-22 |
| CN101044678B (zh) | 2010-05-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |