DE69625734D1 - Akustischer Oberflächenwellenfilter - Google Patents

Akustischer Oberflächenwellenfilter

Info

Publication number
DE69625734D1
DE69625734D1 DE69625734T DE69625734T DE69625734D1 DE 69625734 D1 DE69625734 D1 DE 69625734D1 DE 69625734 T DE69625734 T DE 69625734T DE 69625734 T DE69625734 T DE 69625734T DE 69625734 D1 DE69625734 D1 DE 69625734D1
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
Application number
DE69625734T
Other languages
English (en)
Other versions
DE69625734T2 (de
Inventor
Yutaka Taguchi
Kazuo Eda
Keiji Onishi
Shunichi Seki
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 DE69625734D1 publication Critical patent/DE69625734D1/de
Application granted granted Critical
Publication of DE69625734T2 publication Critical patent/DE69625734T2/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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE69625734T 1995-03-15 1996-03-08 Akustischer Oberflächenwellenfilter Expired - Lifetime DE69625734T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5612795 1995-03-15

Publications (2)

Publication Number Publication Date
DE69625734D1 true DE69625734D1 (de) 2003-02-20
DE69625734T2 DE69625734T2 (de) 2003-05-22

Family

ID=13018418

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69625734T Expired - Lifetime DE69625734T2 (de) 1995-03-15 1996-03-08 Akustischer Oberflächenwellenfilter

Country Status (3)

Country Link
US (1) US6018281A (de)
EP (1) EP0732805B1 (de)
DE (1) DE69625734T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1326333B1 (de) * 1997-02-12 2008-08-20 Oki Electric Industry Co., Ltd. Akustische Oberflächenwellenfilter mit durch Impedanzschaltungen erzeugten Dämpfungspolen
JP3171144B2 (ja) * 1997-07-07 2001-05-28 株式会社村田製作所 表面波装置
EP1035648A3 (de) * 1999-03-10 2000-12-27 Matsushita Electric Industrial Co., Ltd. Bereichsumschaltbares Filter mit einem Oberflächenwellenresonator und Antennenduplexer mit solch einem Filter
JP3704442B2 (ja) * 1999-08-26 2005-10-12 株式会社日立製作所 無線端末
JP3389911B2 (ja) * 2000-02-07 2003-03-24 株式会社村田製作所 弾性表面波フィルタ、共用器及び通信機
JP5175016B2 (ja) * 2000-04-06 2013-04-03 トライクイント・セミコンダクター・インコーポレイテッド チューニング可能なフィルタ構成
JP2005033246A (ja) * 2003-07-07 2005-02-03 Matsushita Electric Ind Co Ltd Ｓａｗフィルタとそれを用いた電子デバイス
FR2927742A1 (fr) * 2008-02-15 2009-08-21 St Microelectronics Sa Filtre a resonateur acoustiques de type baw reconfigurable par voie numerique et procede
WO2012079038A2 (en) * 2010-12-10 2012-06-14 Peregrine Semiconductor Corporation Method, system, and apparatus for resonator circuits and modulating resonators
US9300038B2 (en) 2010-12-10 2016-03-29 Peregrine Semiconductor Corporation Method, system, and apparatus for resonator circuits and modulating resonators
JP6187594B2 (ja) * 2013-09-26 2017-08-30 株式会社村田製作所 共振器及び高周波フィルタ
WO2016190216A1 (ja) * 2015-05-22 2016-12-01 京セラ株式会社 弾性波装置および通信装置
US9608595B1 (en) * 2015-11-13 2017-03-28 Resonant Inc. Acoustic wave filter with enhanced rejection
US10305447B2 (en) 2015-11-13 2019-05-28 Resonant Inc. Acoustic wave filter with enhanced rejection

Family Cites Families (14)

* Cited by examiner, † Cited by third party
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
US4011526A (en) * 1976-01-05 1977-03-08 Motorola, Inc. Temperature compensated surface acoustic wave oscillator
JPS6489709A (en) * 1987-09-30 1989-04-04 Toshiba Corp Band width variable circuit
JPH01157109A (ja) * 1987-12-14 1989-06-20 Hitachi Ltd 弾性表面波共振器
JPH03201815A (ja) * 1989-12-28 1991-09-03 Nippon Mining Co Ltd 弾性表面波共振子
JPH03278609A (ja) * 1990-03-28 1991-12-10 Toko Inc 表面弾性波多重モードフィルタおよびその通過帯域特性調整方法
US5107233A (en) * 1990-10-15 1992-04-21 Hewlett-Packard Company Amplitude correction of field coupled varactor tuned filters
JPH04207621A (ja) * 1990-11-30 1992-07-29 Matsushita Electric Ind Co Ltd 弾性表面波装置
US5166646A (en) * 1992-02-07 1992-11-24 Motorola, Inc. Integrated tunable resonators for use in oscillators and filters
US5291159A (en) * 1992-07-20 1994-03-01 Westinghouse Electric Corp. Acoustic resonator filter with electrically variable center frequency and bandwidth
JP3191473B2 (ja) * 1993-03-09 2001-07-23 三菱電機株式会社 弾性表面波フィルタ
JPH06338756A (ja) * 1993-05-27 1994-12-06 Fujitsu Ltd 共振子型弾性表面波フィルタ
EP0652637B1 (de) * 1993-11-05 1998-08-12 Matsushita Electric Industrial Co., Ltd. Akustisches Oberflächenwellenfilter
DE4409989A1 (de) * 1994-03-23 1995-09-28 Edgar Renz Eckverbindungspresse zum Herstellen von Metallrahmen

Also Published As

Publication number Publication date
EP0732805A3 (de) 1997-02-26
EP0732805B1 (de) 2003-01-15
EP0732805A2 (de) 1996-09-18
DE69625734T2 (de) 2003-05-22
US6018281A (en) 2000-01-25

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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