DE3382058D1 - Hochfrequentes multimodefilter mit schmalem durchlassband. - Google Patents

Hochfrequentes multimodefilter mit schmalem durchlassband.

Info

Publication number
DE3382058D1
DE3382058D1 DE8383107258T DE3382058T DE3382058D1 DE 3382058 D1 DE3382058 D1 DE 3382058D1 DE 8383107258 T DE8383107258 T DE 8383107258T DE 3382058 T DE3382058 T DE 3382058T DE 3382058 D1 DE3382058 D1 DE 3382058D1
Authority
DE
Germany
Prior art keywords
throughband
narrow
multimode filter
frequency multimode
frequency
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
DE8383107258T
Other languages
English (en)
Inventor
Yuzo Toyo Comm Equipm Nakazawa
Kazuo Toyo Communication E Ono
Masaki Toyo Comm Equipm Tanaka
Takao Toyo Comm Equipme Morita
Takefumi Toyo Comm Eq Kurosaki
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.)
Toyo Communication Equipment Co Ltd
Original Assignee
Toyo Communication Equipment 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 Toyo Communication Equipment Co Ltd filed Critical Toyo Communication Equipment Co Ltd
Application granted granted Critical
Publication of DE3382058D1 publication Critical patent/DE3382058D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled 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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02944—Means for compensation or elimination of undesirable effects of ohmic loss
    • 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
    • H03H9/6433—Coupled resonator filters
    • H03H9/644—Coupled resonator filters having two acoustic tracks
    • H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
    • H03H9/6459—Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode
    • H03H9/6463—Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode the tracks being electrically cascaded

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE8383107258T 1982-07-26 1983-07-23 Hochfrequentes multimodefilter mit schmalem durchlassband. Expired - Lifetime DE3382058D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57130140A JPS59131213A (ja) 1982-07-26 1982-07-26 高周波狭帯域多重モ−ド・フイルタ

Publications (1)

Publication Number Publication Date
DE3382058D1 true DE3382058D1 (de) 1991-01-24

Family

ID=15026915

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383107258T Expired - Lifetime DE3382058D1 (de) 1982-07-26 1983-07-23 Hochfrequentes multimodefilter mit schmalem durchlassband.

Country Status (3)

Country Link
US (1) US4542356A (de)
JP (1) JPS59131213A (de)
DE (1) DE3382058D1 (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5077545A (en) * 1990-05-02 1991-12-31 Sawtek, Inc. Surface acoustic wave waveguide-coupled resonator notch filter
JPH0580027U (ja) * 1991-07-18 1993-10-29 ティーディーケイ株式会社 圧電部品
DE4330438B4 (de) * 1992-09-09 2010-07-01 Hitachi, Ltd. Oberflächenakustikwelleneinrichtung
US5374908A (en) * 1992-11-25 1994-12-20 Rf Monolithics, Inc. Surface acoustic wave device for generating an output signal with only a symmetric or only an asymmetric vibration mode acoustic wave
JP3139225B2 (ja) * 1993-07-08 2001-02-26 株式会社村田製作所 弾性表面波フィルタ
JP3189508B2 (ja) * 1993-07-08 2001-07-16 株式会社村田製作所 弾性表面波フィルタ
DE69424737T2 (de) * 1993-10-08 2000-09-28 Matsushita Electric Ind Co Ltd Akustisches Oberflächenwellenfilter
US5365138A (en) * 1993-12-02 1994-11-15 Northern Telecom Limited Double mode surface wave resonators
WO1996010293A1 (fr) * 1994-09-29 1996-04-04 Seiko Epson Corporation Dispositif a ondes acoustiques de surface
US5497337A (en) * 1994-10-21 1996-03-05 International Business Machines Corporation Method for designing high-Q inductors in silicon technology without expensive metalization
US5663695A (en) * 1994-10-31 1997-09-02 Ngk Insulators, Ltd. Surface acoustic wave filter device and transducer therefor
WO1996015587A1 (fr) * 1994-11-10 1996-05-23 Fujitsu Limited Filtre a ondes acoustiques
US6172582B1 (en) 1996-02-20 2001-01-09 Cts Corporation Saw resonator and ladder filter with specified number of reflector electrode fingers
EP0921636B1 (de) 1996-05-23 2007-04-04 Matsushita Electric Industrial Co., Ltd. Akustisches Oberflächenwellenfilter und mehrstufiges akustisches Oberflächenwellenfilter
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
US6348845B2 (en) 1996-05-23 2002-02-19 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter and multistage surface acoustic wave filter
US5793266A (en) * 1996-08-12 1998-08-11 Motorola Inc. Differential input and/or differential output, transversely-coupled surface acoustic wave filter
JP3154402B2 (ja) * 1997-11-12 2001-04-09 日本電気株式会社 Ｓａｗ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
DE10025450B4 (de) * 2000-05-23 2010-04-15 Epcos Ag Oberflächenwellen-Bandpassfilter in Drei-Wandler-Anordnung
JP3729090B2 (ja) * 2001-06-06 2005-12-21 株式会社村田製作所 圧電フィルタ
KR100535405B1 (ko) * 2003-12-30 2005-12-08 현대자동차주식회사 타이어의 압력 및 온도 측정용 표면탄성파 센서
US8335131B2 (en) * 2006-09-29 2012-12-18 Undersea Sensor Systems, Inc. Acoustic transducer array element having a plurality of acoustically coupled transducer assemblies
TWI466442B (zh) * 2011-12-07 2014-12-21 Ind Tech Res Inst 指叉型耦合共振器
CN105940605B (zh) * 2014-02-04 2018-11-09 株式会社村田制作所 弹性波装置
US10097158B2 (en) * 2014-10-16 2018-10-09 Taiyo Yuden Co., Ltd. Acoustic wave device, filter, and duplexer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600710A (en) * 1968-08-12 1971-08-17 Zenith Radio Corp Acoustic surface wave filter
US4060777A (en) * 1976-05-19 1977-11-29 Piezo Technology Inc. Guided elastic surface wave filter
US4166987A (en) * 1978-02-15 1979-09-04 Bell Telephone Laboratories, Incorporated Surface acoustic wave multistrip coupler

Also Published As

Publication number Publication date
JPH0216613B2 (de) 1990-04-17
JPS59131213A (ja) 1984-07-28
US4542356A (en) 1985-09-17

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8315 Request for restriction filed
8318 Patent restricted