DE69700938D1 - Akustischer Oberflächenwellenfilter und mehrstufiger akustischer Oberflächenwellenfilter - Google Patents

Akustischer Oberflächenwellenfilter und mehrstufiger akustischer Oberflächenwellenfilter

Info

Publication number
DE69700938D1
DE69700938D1 DE69700938T DE69700938T DE69700938D1 DE 69700938 D1 DE69700938 D1 DE 69700938D1 DE 69700938 T DE69700938 T DE 69700938T DE 69700938 T DE69700938 T DE 69700938T DE 69700938 D1 DE69700938 D1 DE 69700938D1
Authority
DE
Germany
Prior art keywords
wave filter
surface wave
acoustic surface
stage
stage acoustic
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
Application number
DE69700938T
Other languages
English (en)
Other versions
DE69700938T2 (de
Inventor
Hiroyuki Nakamura
Toru Yamada
Kazunori Nishimura
Toshio Ishizaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE69700938D1 publication Critical patent/DE69700938D1/de
Application granted granted Critical
Publication of DE69700938T2 publication Critical patent/DE69700938T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46Filters
    • H03H9/64Filters using surface acoustic waves
    • H03H9/6423Means for obtaining a particular transfer characteristic
    • H03H9/6433Coupled resonator filters
    • H03H9/644Coupled resonator filters having two acoustic tracks
    • H03H9/6443Coupled resonator filters having two acoustic tracks being acoustically coupled
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/0023Balance-unbalance or balance-balance networks
    • H03H9/0028Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02Details
    • H03H9/02535Details of surface acoustic wave devices
    • H03H9/02637Details concerning reflective or coupling arrays
    • H03H9/02685Grating lines having particular arrangements
    • H03H9/02763Left and right side electrically coupled reflectors
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02Details
    • H03H9/02535Details of surface acoustic wave devices
    • H03H9/02992Details of bus bars, contact pads or other electrical connections for finger electrodes
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02Details
    • H03H9/125Driving means, e.g. electrodes, coils
    • H03H9/145Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14544Transducers of particular shape or position
    • H03H9/14588Horizontally-split transducers
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46Filters
    • H03H9/64Filters using surface acoustic waves
    • H03H9/6423Means for obtaining a particular transfer characteristic
    • H03H9/6433Coupled resonator filters
    • H03H9/644Coupled resonator filters having two acoustic tracks
    • H03H9/6456Coupled resonator filters having two acoustic tracks being electrically coupled
    • H03H9/6459Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode
    • H03H9/6463Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode the tracks being electrically cascaded
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46Filters
    • H03H9/64Filters using surface acoustic waves
    • H03H9/6423Means for obtaining a particular transfer characteristic
    • H03H9/6433Coupled resonator filters
    • H03H9/6479Capacitively coupled SAW resonator filters
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02Details
    • H03H9/02535Details of surface acoustic wave devices
    • H03H9/02818Means for compensation or elimination of undesirable effects
    • H03H9/02913Measures for shielding against electromagnetic fields
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02Details
    • H03H9/125Driving means, e.g. electrodes, coils
    • H03H9/145Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14597Matching SAW transducers to external electrical circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE69700938T 1996-05-23 1997-05-22 Akustischer Oberflächenwellenfilter und mehrstufiger akustischer Oberflächenwellenfilter Expired - Lifetime DE69700938T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP12876096 1996-05-23
JP23001696 1996-08-30
JP489497 1997-01-14

Publications (2)

Publication Number Publication Date
DE69700938D1 true DE69700938D1 (de) 2000-01-20
DE69700938T2 DE69700938T2 (de) 2000-05-04

Family

ID=27276502

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69737555T Expired - Lifetime DE69737555T2 (de) 1996-05-23 1997-05-22 Akustisches Oberflächenwellenfilter und mehrstufiges akustisches Oberflächenwellenfilter
DE69700938T Expired - Lifetime DE69700938T2 (de) 1996-05-23 1997-05-22 Akustischer Oberflächenwellenfilter und mehrstufiger akustischer Oberflächenwellenfilter

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69737555T Expired - Lifetime DE69737555T2 (de) 1996-05-23 1997-05-22 Akustisches Oberflächenwellenfilter und mehrstufiges akustisches Oberflächenwellenfilter

Country Status (4)

Country Link
US (2) US5990762A (de)
EP (2) EP0809357B1 (de)
CN (1) CN1118932C (de)
DE (2) DE69737555T2 (de)

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US6801100B2 (en) * 1996-05-23 2004-10-05 Matsushita Electric Industrial Co., Ltd. Inter-digital transducer, surface acoustic wave filter and communication apparatus using the same
DE19724259C2 (de) * 1997-06-09 2002-11-14 Epcos Ag Dualmode-Oberflächenwellenfilter
DE19724255C2 (de) * 1997-06-09 1999-10-21 Siemens Matsushita Components Transversalmodenresonatorfilter
KR20010034613A (ko) * 1998-03-23 2001-04-25 에프코스 아게 표면파 음향 필터
US6259336B1 (en) * 1998-05-27 2001-07-10 Kabushiki Kaisha Toshiba Surface acoustic wave filter device
JP2000244275A (ja) * 1999-02-19 2000-09-08 Murata Mfg Co Ltd Saw共振子フィルタ
JP3918433B2 (ja) * 1999-04-28 2007-05-23 セイコーエプソン株式会社 横2重モードsawフィルタ
JP3402311B2 (ja) * 2000-05-19 2003-05-06 株式会社村田製作所 弾性表面波装置
JP3478260B2 (ja) * 2000-10-27 2003-12-15 株式会社村田製作所 弾性表面波フィルタおよび通信機装置
JP3414387B2 (ja) * 2001-03-09 2003-06-09 株式会社村田製作所 弾性表面波装置、通信装置
US6861927B1 (en) * 2001-04-27 2005-03-01 Sawtek, Inc. Longitudinally coupled leaky surface acoustic wave resonator filter
US6798318B1 (en) 2001-04-27 2004-09-28 Sawtek, Inc. Hybrid leaky surface acoustic wave resonator filter
US6534896B2 (en) * 2001-05-15 2003-03-18 Nortel Networks Limited Spatial harmonic transducers for surface wave devices
JP3564114B2 (ja) * 2001-07-11 2004-09-08 松下電器産業株式会社 弾性表面波フィルタ、及びそれを用いた通信機器
JP3864850B2 (ja) * 2001-08-09 2007-01-10 株式会社村田製作所 弾性表面波フィルタ、通信装置
JP3945363B2 (ja) * 2001-10-12 2007-07-18 株式会社村田製作所 弾性表面波装置
EP1303041B1 (de) * 2001-10-16 2009-03-18 Panasonic Corporation Interdigitalwandler, akustisches Oberflächenwellenfilter und Funkkommunikationsvorrichtung
WO2003079409A2 (en) 2002-03-15 2003-09-25 United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Electro-active device using radial electric field piezo-diaphragm for control of fluid movement
AU2003218120A1 (en) * 2002-03-15 2003-09-29 United States Of America As Represented By The Administrator Of The National Aeronautics And Space Electro-active device using radial electric field piezo-diaphragm for sonic applications
US7038358B2 (en) * 2002-03-15 2006-05-02 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Electro-active transducer using radial electric field to produce/sense out-of-plane transducer motion
CN102204091B (zh) * 2008-11-18 2014-04-02 株式会社村田制作所 可调滤波器
JP6421748B2 (ja) * 2015-12-25 2018-11-14 株式会社村田製作所 弾性波装置
US10320363B2 (en) * 2016-08-05 2019-06-11 Murata Manufacturing Co., Ltd. High-frequency module
WO2019123810A1 (ja) * 2017-12-19 2019-06-27 株式会社村田製作所 弾性波装置
CN113054943B (zh) * 2021-03-29 2023-07-07 北京航天微电科技有限公司 提高阻带抑制的方法、系统、声表面波滤波器和电子设备
CN114614791B (zh) * 2022-05-12 2022-08-23 深圳新声半导体有限公司 级联谐振器和声表面波滤波器

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US33957A (en) * 1861-12-17 Improved mode of operating giffard s injector
JPS5330848A (en) * 1976-09-03 1978-03-23 Murata Manufacturing Co Surface acoustic wave device
US4223284A (en) * 1977-11-07 1980-09-16 Murata Manufacturing Co., Ltd. Acoustic surface wave device
JPS55107319A (en) * 1979-02-09 1980-08-18 Murata Mfg Co Ltd Surface acoustic wave filter
JPS5622164A (en) 1979-07-31 1981-03-02 Fujitsu Ltd Cash register
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
USRE33957E (en) 1982-07-26 1992-06-09 Toyo Communication Equipment Co., Ltd. High frequency narrow-band multi-mode filter
GB2149253A (en) * 1983-10-31 1985-06-05 Philips Electronic Associated Surface acoustic wave device
WO1986001655A1 (en) * 1984-09-03 1986-03-13 Epprecht, Georg Converter for surface-acoustic waves (saw)
JPH0652853B2 (ja) 1985-12-17 1994-07-06 東洋通信機株式会社 反射器型高周波狭帯域多重モ−ド・フイルタの電極構造
JPH0421367A (ja) * 1989-02-14 1992-01-24 Ricoh Co Ltd アクチュエータ
US5363074A (en) * 1992-10-19 1994-11-08 Motorola, Inc. Saw structure having serially coupled transducers with overlapping fingers
US5363073A (en) * 1992-10-19 1994-11-08 Motorola, Inc. Saw resonator filter with a multistrip coupler disposed in the resonator gaps
JP3476151B2 (ja) * 1992-12-10 2003-12-10 東洋通信機株式会社 縦型3重モードsawフィルタ
EP0648015B1 (de) * 1993-10-08 2000-05-31 Matsushita Electric Industrial Co., Ltd. Akustisches Oberflächenwellenfilter
JP3532624B2 (ja) 1993-10-08 2004-05-31 松下電器産業株式会社 弾性表面波フィルタ
US5365138A (en) * 1993-12-02 1994-11-15 Northern Telecom Limited Double mode surface wave resonators
JPH07321599A (ja) * 1994-01-31 1995-12-08 Siemens Matsushita Components Gmbh & Co Kg 横モード結合されたofw共振器フィルタ
DE4439489C1 (de) * 1994-10-26 1996-01-18 Tele Filter Tft Gmbh Akustisches Oberflächenwellenbauelement und Verfahren zur Herstellung
US5955933A (en) * 1994-11-10 1999-09-21 Fujitsu Limited Saw resonator with improved connections
EP0746095B1 (de) * 1995-05-29 2007-02-14 SANYO ELECTRIC Co., Ltd. Akustischer Oberflächenwellenfilter
FR2739232B1 (fr) * 1995-09-26 1997-10-24 Thomson Csf Filtre a ondes acoustiques de surface utilisant le couplage de trois voies acoustiques
US5793266A (en) * 1996-08-12 1998-08-11 Motorola Inc. Differential input and/or differential output, transversely-coupled surface acoustic wave filter
FR2762458B1 (fr) * 1997-04-18 1999-07-09 Thomson Csf Dispositif a ondes acoustiques de surface a couplage par proximite a entrees/sorties differentielles

Also Published As

Publication number Publication date
US6351196B1 (en) 2002-02-26
CN1118932C (zh) 2003-08-20
EP0809357A3 (de) 1998-08-05
US5990762A (en) 1999-11-23
DE69700938T2 (de) 2000-05-04
DE69737555T2 (de) 2007-08-09
EP0921636A3 (de) 2000-05-17
CN1177236A (zh) 1998-03-25
EP0809357A2 (de) 1997-11-26
DE69737555D1 (de) 2007-05-16
EP0921636A2 (de) 1999-06-09
US20020014934A1 (en) 2002-02-07
EP0921636B1 (de) 2007-04-04
EP0809357B1 (de) 1999-12-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP