CN100495911C - 使用压电材料的滤波器 - Google Patents
使用压电材料的滤波器 Download PDFInfo
- Publication number
- CN100495911C CN100495911C CNB2004100806832A CN200410080683A CN100495911C CN 100495911 C CN100495911 C CN 100495911C CN B2004100806832 A CNB2004100806832 A CN B2004100806832A CN 200410080683 A CN200410080683 A CN 200410080683A CN 100495911 C CN100495911 C CN 100495911C
- Authority
- CN
- China
- Prior art keywords
- pattern
- refers
- electrode
- refer
- main electrode
- 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.)
- Expired - Fee Related
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Images
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
-
- 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
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02637—Details concerning reflective or coupling arrays
- H03H9/02779—Continuous surface reflective arrays
-
- 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
- H03H9/02992—Details of bus bars, contact pads or other electrical connections for finger electrodes
-
- 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
- H03H9/14517—Means for weighting
- H03H9/1452—Means for weighting by finger overlap length, apodisation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/25—Constructional features of resonators 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
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/6479—Capacitively coupled SAW resonator filters
-
- 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
- H03H9/6489—Compensation of undesirable effects
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
Description
Claims (17)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003338854 | 2003-09-29 | ||
JP2003338854A JP4283076B2 (ja) | 2003-09-29 | 2003-09-29 | 圧電体を用いたフィルタ |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1604468A CN1604468A (zh) | 2005-04-06 |
CN100495911C true CN100495911C (zh) | 2009-06-03 |
Family
ID=34534202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2004100806832A Expired - Fee Related CN100495911C (zh) | 2003-09-29 | 2004-09-29 | 使用压电材料的滤波器 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7154360B2 (zh) |
JP (1) | JP4283076B2 (zh) |
KR (1) | KR100693988B1 (zh) |
CN (1) | CN100495911C (zh) |
SG (1) | SG110188A1 (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10325798B4 (de) * | 2003-06-06 | 2015-06-18 | Epcos Ag | SAW-Filter mit verbesserter Selektion oder Isolation |
JP4654271B2 (ja) * | 2008-06-25 | 2011-03-16 | 日本電波工業株式会社 | トランスバーサル型フィルタ |
CN101859868B (zh) * | 2010-05-31 | 2011-11-23 | 中南大学 | 叉指状电极 |
CN101888221B (zh) * | 2010-07-02 | 2012-11-21 | 无锡市好达电子有限公司 | 多汇流条声表面波滤波器 |
JP6335492B2 (ja) * | 2013-11-29 | 2018-05-30 | 太陽誘電株式会社 | 弾性波素子 |
WO2016208074A1 (ja) * | 2015-06-26 | 2016-12-29 | 株式会社日立製作所 | 電力変換装置 |
CN108496308B (zh) * | 2016-01-29 | 2021-11-16 | 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 |
JP2020085664A (ja) * | 2018-11-26 | 2020-06-04 | 株式会社田中電気研究所 | 白濁排気ガス用の光散乱式ダスト濃度計 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4375624A (en) * | 1981-06-22 | 1983-03-01 | Zenith Radio Corporation | Surface wave acoustic device with compensation for spurious frequency response modes |
JPS61120511A (ja) | 1984-11-15 | 1986-06-07 | Matsushita Electric Ind Co Ltd | 表面弾性波デバイス |
US5130597A (en) * | 1991-04-19 | 1992-07-14 | The United States Of America As Represented By The Secretary Of The Army | Amplitude error compensated saw reflective array correlator |
JPH06232681A (ja) * | 1993-02-02 | 1994-08-19 | Hitachi Ltd | 弾性表面波装置およびその作成方法ならびにそれを用いた通信装置 |
JP3089611B2 (ja) * | 1993-03-18 | 2000-09-18 | 松下電器産業株式会社 | 弾性表面波多重モードフィルタ |
KR0168963B1 (ko) * | 1995-07-18 | 1999-03-20 | 이형도 | 탄성표면파 필터 |
JP3266804B2 (ja) | 1996-07-23 | 2002-03-18 | 株式会社日立製作所 | 弾性表面波素子 |
US6791236B1 (en) * | 2000-10-11 | 2004-09-14 | Yuri Abramov | Method utilizing the saw velocity dispersion effect for weighting by shaping the electrode fingers of a saw interdigital transducer and apparatus produced thereby |
AU2002221018A1 (en) * | 2000-11-29 | 2002-06-11 | Soliton Holdings Corp. | Saw wave-guides |
JP4246604B2 (ja) * | 2003-11-18 | 2009-04-02 | 富士通メディアデバイス株式会社 | 弾性表面波デバイス |
-
2003
- 2003-09-29 JP JP2003338854A patent/JP4283076B2/ja not_active Expired - Fee Related
-
2004
- 2004-09-23 KR KR1020040076182A patent/KR100693988B1/ko not_active IP Right Cessation
- 2004-09-27 SG SG200405604A patent/SG110188A1/en unknown
- 2004-09-28 US US10/950,975 patent/US7154360B2/en not_active Expired - Fee Related
- 2004-09-29 CN CNB2004100806832A patent/CN100495911C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US20050093660A1 (en) | 2005-05-05 |
KR20050031388A (ko) | 2005-04-06 |
US7154360B2 (en) | 2006-12-26 |
KR100693988B1 (ko) | 2007-03-13 |
JP4283076B2 (ja) | 2009-06-24 |
JP2005109762A (ja) | 2005-04-21 |
SG110188A1 (en) | 2005-04-28 |
CN1604468A (zh) | 2005-04-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
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: TAIYO YUDEN CO., LTD. Free format text: FORMER OWNER: FUJITSU MEDIA DEVICES LTD Effective date: 20101201 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: KANAGAWA PREFECTURE, JAPAN TO: TOKYO, JAPAN |
|
TR01 | Transfer of patent right |
Effective date of registration: 20101201 Address after: Tokyo, Japan, Japan Patentee after: Taiyo Yuden Co., Ltd. Address before: Kanagawa Patentee before: Fujitsu Media Devices Ltd |
|
C17 | Cessation of patent right | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20130929 |