DE69403281D1 - Akustisches Oberflächenwellenfilter - Google Patents
Akustisches OberflächenwellenfilterInfo
- Publication number
- DE69403281D1 DE69403281D1 DE69403281T DE69403281T DE69403281D1 DE 69403281 D1 DE69403281 D1 DE 69403281D1 DE 69403281 T DE69403281 T DE 69403281T DE 69403281 T DE69403281 T DE 69403281T DE 69403281 D1 DE69403281 D1 DE 69403281D1
- Authority
- DE
- Germany
- Prior art keywords
- wave filter
- surface wave
- acoustic surface
- acoustic
- filter
- 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 - Lifetime
Links
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
- H03H9/6433—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
- H03H9/02—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
- H03H9/1455—Transducers of particular shape or position constituted of N parallel or series 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
- H03H2250/00—Indexing scheme relating to dual- or multi-band filters
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP05169002A JP3139225B2 (ja) | 1993-07-08 | 1993-07-08 | 弾性表面波フィルタ |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69403281D1 true DE69403281D1 (de) | 1997-06-26 |
DE69403281T2 DE69403281T2 (de) | 1997-09-25 |
Family
ID=15878532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69403281T Expired - Lifetime DE69403281T2 (de) | 1993-07-08 | 1994-07-06 | Akustisches Oberflächenwellenfilter |
Country Status (6)
Country | Link |
---|---|
US (1) | US5694096A (de) |
EP (1) | EP0633659B1 (de) |
JP (1) | JP3139225B2 (de) |
KR (1) | KR100196292B1 (de) |
CN (1) | CN1106709C (de) |
DE (1) | DE69403281T2 (de) |
Families Citing this family (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2280807B (en) * | 1993-08-04 | 1997-10-22 | Advanced Saw Prod Sa | Saw filter |
DE69614463T2 (de) * | 1995-07-25 | 2002-05-29 | Murata Mfg. Co., Ltd. | Akustische Oberflächenwellenanordnung |
US5635883A (en) * | 1995-08-28 | 1997-06-03 | Motorola, Inc. | Acoustic wave filter with filter-shaping element and method |
JP3849289B2 (ja) * | 1997-04-10 | 2006-11-22 | 株式会社村田製作所 | 弾性表面波装置 |
US6501208B1 (en) * | 1997-07-18 | 2002-12-31 | Kabushiki Kaisha Toshiba | Compensated surface acoustic wave filter having a longitudinal mode resonator connected with a second resonator |
JP3244032B2 (ja) * | 1997-08-22 | 2002-01-07 | 株式会社村田製作所 | 弾性表面波装置 |
DE69936479T2 (de) * | 1998-03-06 | 2008-03-20 | Kabushiki Kaisha Toshiba, Kawasaki | Akustische Oberflächenwellenanordnung und Kommunikationsgerät |
JP2000059176A (ja) * | 1998-08-06 | 2000-02-25 | Toshiba Corp | 弾性表面波素子 |
US6061551A (en) | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for down-converting electromagnetic signals |
US6694128B1 (en) | 1998-08-18 | 2004-02-17 | Parkervision, Inc. | Frequency synthesizer using universal frequency translation technology |
US7515896B1 (en) | 1998-10-21 | 2009-04-07 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships |
FR2782568B1 (fr) * | 1998-08-21 | 2001-08-10 | Thomson Csf | Filtre acoustique a deux canaux differents a compensation de rejection |
US6049706A (en) | 1998-10-21 | 2000-04-11 | Parkervision, Inc. | Integrated frequency translation and selectivity |
US6542722B1 (en) | 1998-10-21 | 2003-04-01 | Parkervision, Inc. | Method and system for frequency up-conversion with variety of transmitter configurations |
US7236754B2 (en) | 1999-08-23 | 2007-06-26 | Parkervision, Inc. | Method and system for frequency up-conversion |
US6061555A (en) | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for ensuring reception of a communications signal |
US6560301B1 (en) | 1998-10-21 | 2003-05-06 | Parkervision, Inc. | Integrated frequency translation and selectivity with a variety of filter embodiments |
US7039372B1 (en) | 1998-10-21 | 2006-05-02 | Parkervision, Inc. | Method and system for frequency up-conversion with modulation embodiments |
US6370371B1 (en) | 1998-10-21 | 2002-04-09 | Parkervision, Inc. | Applications of universal frequency translation |
US6813485B2 (en) | 1998-10-21 | 2004-11-02 | Parkervision, Inc. | Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same |
US6704558B1 (en) | 1999-01-22 | 2004-03-09 | Parkervision, Inc. | Image-reject down-converter and embodiments thereof, such as the family radio service |
US6704549B1 (en) | 1999-03-03 | 2004-03-09 | Parkvision, Inc. | Multi-mode, multi-band communication system |
US6853690B1 (en) | 1999-04-16 | 2005-02-08 | Parkervision, Inc. | Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments |
US6879817B1 (en) | 1999-04-16 | 2005-04-12 | Parkervision, Inc. | DC offset, re-radiation, and I/Q solutions using universal frequency translation technology |
US7065162B1 (en) | 1999-04-16 | 2006-06-20 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same |
US7110444B1 (en) | 1999-08-04 | 2006-09-19 | Parkervision, Inc. | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations |
US7693230B2 (en) | 1999-04-16 | 2010-04-06 | Parkervision, Inc. | Apparatus and method of differential IQ frequency up-conversion |
JP3371849B2 (ja) * | 1999-04-28 | 2003-01-27 | 株式会社村田製作所 | Saw共振子、複合sawフィルタ及びsawフィルタ |
US8295406B1 (en) | 1999-08-04 | 2012-10-23 | Parkervision, Inc. | Universal platform module for a plurality of communication protocols |
US6720842B2 (en) * | 2000-02-14 | 2004-04-13 | Murata Manufacturing Co., Ltd. | Surface acoustic wave filter device having first through third surface acoustic wave filter elements |
US7010286B2 (en) | 2000-04-14 | 2006-03-07 | Parkervision, Inc. | Apparatus, system, and method for down-converting and up-converting electromagnetic signals |
JP3653611B2 (ja) | 2000-05-18 | 2005-06-02 | 光洋精工株式会社 | 電動式舵取装置 |
JP3454239B2 (ja) * | 2000-08-31 | 2003-10-06 | 株式会社村田製作所 | 弾性表面波フィルタ |
US7454453B2 (en) | 2000-11-14 | 2008-11-18 | Parkervision, Inc. | Methods, systems, and computer program products for parallel correlation and applications thereof |
JP2002185284A (ja) | 2000-12-15 | 2002-06-28 | Sanyo Electric Co Ltd | 弾性表面波フィルタ |
US6828879B2 (en) | 2001-02-16 | 2004-12-07 | Sanyo Electric Co., Ltd. | Longitudinal coupled multiple mode surface acoustic wave filter |
JP3509773B2 (ja) * | 2001-04-26 | 2004-03-22 | 株式会社村田製作所 | 弾性表面波装置、通信装置 |
JP3873802B2 (ja) * | 2001-06-12 | 2007-01-31 | 株式会社村田製作所 | 弾性表面波フィルタ |
JP3685102B2 (ja) | 2001-07-27 | 2005-08-17 | 株式会社村田製作所 | 弾性表面波フィルタ、通信装置 |
US7072427B2 (en) | 2001-11-09 | 2006-07-04 | Parkervision, Inc. | Method and apparatus for reducing DC offsets in a communication system |
US6924715B2 (en) * | 2002-02-12 | 2005-08-02 | Nortel Networks Limited | Band reject filters |
JP3846409B2 (ja) | 2002-02-15 | 2006-11-15 | 株式会社村田製作所 | 弾性表面波装置、通信装置 |
JP3928534B2 (ja) * | 2002-02-28 | 2007-06-13 | 株式会社村田製作所 | 弾性表面波フィルタ |
US7379883B2 (en) | 2002-07-18 | 2008-05-27 | Parkervision, Inc. | Networking methods and systems |
US7460584B2 (en) | 2002-07-18 | 2008-12-02 | Parkervision, Inc. | Networking methods and systems |
US6975180B2 (en) * | 2002-08-08 | 2005-12-13 | Matsushita Electric Industrial Co., Ltd. | Surface acoustic wave filter, and antenna duplexer and communication equipment using the same |
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 |
DE102004020183B4 (de) * | 2004-04-22 | 2015-12-03 | Epcos Ag | Oberflächenwellen-Resonatorfilter mit longitudinal gekoppelten Wandlern |
DE102006010752B4 (de) * | 2006-03-08 | 2013-10-31 | Epcos Ag | DMS-Filter mit verschalteten Resonatoren |
CN101796727B (zh) * | 2007-08-14 | 2016-04-27 | 太阳诱电株式会社 | 弹性边界波装置 |
JP5458738B2 (ja) * | 2009-08-19 | 2014-04-02 | パナソニック株式会社 | 弾性表面波装置 |
JP2011086997A (ja) * | 2009-10-13 | 2011-04-28 | Panasonic Corp | 弾性波装置 |
WO2012032832A1 (ja) * | 2010-09-10 | 2012-03-15 | 株式会社村田製作所 | 弾性波分波器 |
CN102403981B (zh) * | 2011-11-09 | 2014-07-23 | 武汉烽火富华电气有限责任公司 | 谐振型声表面波无源无线阵列传感系统及其方法 |
JP2015119310A (ja) * | 2013-12-18 | 2015-06-25 | 株式会社村田製作所 | 弾性表面波フィルタ |
JP6633544B2 (ja) * | 2014-12-24 | 2020-01-22 | シチズン時計株式会社 | 弾性表面波デバイス |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4166258A (en) * | 1974-08-29 | 1979-08-28 | International Business Machines Corporation | Thin-film integrated circuit with tank circuit characteristics and applications to thin-film filters and oscillators |
JPS5210944A (en) * | 1975-07-15 | 1977-01-27 | Nissan Motor Co Ltd | Sealing device for rotary regenerative heat exchanger |
DE3206512C2 (de) * | 1982-02-24 | 1985-05-15 | L. & C. Steinmüller GmbH, 5270 Gummersbach | Gas-/Flüssigkeits-Gleichstromwärmeaustauscher |
JPS58154917A (ja) * | 1982-03-10 | 1983-09-14 | Hitachi Ltd | 弾性表面波バンドパスフイルタ |
JPS59131213A (ja) * | 1982-07-26 | 1984-07-28 | Toyo Commun Equip Co Ltd | 高周波狭帯域多重モ−ド・フイルタ |
JPH0697727B2 (ja) * | 1985-03-27 | 1994-11-30 | 株式会社日立製作所 | 弾性表面波フィルタ |
JPS6454805A (en) * | 1987-08-25 | 1989-03-02 | Oki Electric Ind Co Ltd | Surface acoustic wave resonator |
JPH01157109A (ja) * | 1987-12-14 | 1989-06-20 | Hitachi Ltd | 弾性表面波共振器 |
JPH01260911A (ja) * | 1988-04-11 | 1989-10-18 | Hitachi Ltd | 弾性表面波共振器複合形フィルタ |
US5202652A (en) * | 1989-10-13 | 1993-04-13 | Hitachi, Ltd. | Surface acoustic wave filter device formed on a plurality of piezoelectric substrates |
JPH03222511A (ja) * | 1990-01-29 | 1991-10-01 | Oki Electric Ind Co Ltd | Saw共振器フィルタ |
JPH03222512A (ja) * | 1990-01-29 | 1991-10-01 | Oki Electric Ind Co Ltd | 有極形saw共振器フィルタ |
JP2645674B2 (ja) * | 1990-10-15 | 1997-08-25 | 国際電気株式会社 | 弾性表面波共振子 |
US5223762A (en) * | 1990-12-27 | 1993-06-29 | Murata Manufacturing Co., Ltd. | Surface acoustic wave filter |
EP0600705B1 (de) * | 1992-12-01 | 1999-01-20 | Japan Radio Co., Ltd | Akustischer Oberflächenwellenfilter und mobiles Kommunikationssystem mit solchem Filter |
-
1993
- 1993-07-08 JP JP05169002A patent/JP3139225B2/ja not_active Expired - Lifetime
-
1994
- 1994-07-06 DE DE69403281T patent/DE69403281T2/de not_active Expired - Lifetime
- 1994-07-06 EP EP94110474A patent/EP0633659B1/de not_active Expired - Lifetime
- 1994-07-08 KR KR1019940016490A patent/KR100196292B1/ko not_active IP Right Cessation
- 1994-07-08 CN CN94115979A patent/CN1106709C/zh not_active Expired - Lifetime
-
1996
- 1996-06-03 US US08/656,699 patent/US5694096A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP3139225B2 (ja) | 2001-02-26 |
EP0633659A1 (de) | 1995-01-11 |
DE69403281T2 (de) | 1997-09-25 |
CN1105166A (zh) | 1995-07-12 |
JPH0730367A (ja) | 1995-01-31 |
US5694096A (en) | 1997-12-02 |
KR960016121A (ko) | 1996-05-22 |
EP0633659B1 (de) | 1997-05-21 |
CN1106709C (zh) | 2003-04-23 |
KR100196292B1 (ko) | 1999-06-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |