DE69506137D1 - Akustisches Oberflächenwellenfilter - Google Patents

Akustisches Oberflächenwellenfilter

Info

Publication number
DE69506137D1
DE69506137D1 DE69506137T DE69506137T DE69506137D1 DE 69506137 D1 DE69506137 D1 DE 69506137D1 DE 69506137 T DE69506137 T DE 69506137T DE 69506137 T DE69506137 T DE 69506137T DE 69506137 D1 DE69506137 D1 DE 69506137D1
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
DE69506137T
Other languages
English (en)
Other versions
DE69506137T2 (de
Inventor
Yutaka Taguchi
Kazuo Eda
Shun-Ichi Seki
Keiji Onishi
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
Application granted granted Critical
Publication of DE69506137D1 publication Critical patent/DE69506137D1/de
Publication of DE69506137T2 publication Critical patent/DE69506137T2/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
    • H03H9/6483—Ladder SAW 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE69506137T 1994-01-12 1995-01-09 Akustisches Oberflächenwellenfilter Expired - Lifetime DE69506137T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP00147694A JP3375712B2 (ja) 1994-01-12 1994-01-12 弾性表面波フィルタ

Publications (2)

Publication Number Publication Date
DE69506137D1 true DE69506137D1 (de) 1999-01-07
DE69506137T2 DE69506137T2 (de) 1999-05-12

Family

ID=11502510

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69506137T Expired - Lifetime DE69506137T2 (de) 1994-01-12 1995-01-09 Akustisches Oberflächenwellenfilter

Country Status (4)

Country Link
US (1) US5589806A (de)
EP (1) EP0663721B1 (de)
JP (1) JP3375712B2 (de)
DE (1) DE69506137T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69636897T2 (de) * 1995-05-29 2007-10-25 Sanyo Electric Co., Ltd., Moriguchi Akustischer Oberflächenwellenfilter
JP3243976B2 (ja) * 1995-08-14 2002-01-07 株式会社村田製作所 弾性表面波フィルタ
JPH09121138A (ja) * 1995-08-24 1997-05-06 Fujitsu Ltd フィルタ装置及びこれを用いた無線装置
DE19638451A1 (de) 1996-09-19 1998-04-02 Siemens Matsushita Components Reaktanzfilter mit OFW-Resonatoren
DE69738934D1 (de) * 1997-02-12 2008-10-02 Oki Electric Ind Co Ltd Akustische Oberflächenwellenfilter mit durch Impedanzschaltungen erzeugten Dämpfungspolen
JP3563414B2 (ja) 1998-05-19 2004-09-08 松下電器産業株式会社 Ｓａｗフィルタおよびそれを用いたアンテナ共用器およびそれを用いた移動体通信機
JP3498204B2 (ja) * 1999-03-10 2004-02-16 株式会社村田製作所 弾性表面波フィルタ、それを用いた通信機装置
JP4352572B2 (ja) * 2000-04-03 2009-10-28 パナソニック株式会社 アンテナ共用器
JP3432492B2 (ja) * 2000-09-28 2003-08-04 富士通株式会社 弾性表面波共振器及びこれを用いた弾性表面波フィルタ
US7299528B2 (en) * 2002-11-05 2007-11-27 Lee David M Method for forming a multi-frequency surface acoustic wave device
JP2004228911A (ja) * 2003-01-22 2004-08-12 Tdk Corp 分波器
US7446629B2 (en) * 2004-08-04 2008-11-04 Matsushita Electric Industrial Co., Ltd. Antenna duplexer, and RF module and communication apparatus using the same
KR100760780B1 (ko) * 2004-09-28 2007-09-21 후지쓰 메디아 데바이스 가부시키가이샤 분파기
JP2011205625A (ja) * 2010-03-02 2011-10-13 Panasonic Corp ラダー型フィルタ
US9853624B2 (en) * 2015-06-26 2017-12-26 Qorvo Us, Inc. SAW resonator with resonant cavities

Family Cites Families (15)

* 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
JPS5219044A (en) * 1975-08-04 1977-01-14 Nippon Telegr & Teleph Corp <Ntt> Surface acoustic wave filter
JPS58154917A (ja) * 1982-03-10 1983-09-14 Hitachi Ltd 弾性表面波バンドパスフイルタ
DE3407480A1 (de) * 1984-02-29 1985-09-05 Siemens AG, 1000 Berlin und 8000 München Elektrisches oberflaechenwellenfilter
US4673901A (en) * 1984-10-26 1987-06-16 Siemens Aktiengesellschaft Electrical filter operating with acoustic waves
DE3517254A1 (de) * 1985-05-13 1986-11-13 Siemens AG, 1000 Berlin und 8000 München Mit akustischen wellen arbeitendes elektrisches filter
JPS63132515A (ja) * 1986-11-25 1988-06-04 Hitachi Ltd 弾性表面波複合フイルタ
US5202652A (en) * 1989-10-13 1993-04-13 Hitachi, Ltd. Surface acoustic wave filter device formed on a plurality of piezoelectric substrates
JPH03222512A (ja) * 1990-01-29 1991-10-01 Oki Electric Ind Co Ltd 有極形ｓａｗ共振器フィルタ
JPH03278608A (ja) * 1990-03-28 1991-12-10 Hitachi Ltd 多段縦続接続型弾性表面波フィルタ及びそれを用いた通信装置
JPH04253414A (ja) * 1991-01-30 1992-09-09 Hitachi Ltd 弾性表面波共振器複合形フィルタを用いた分波器
JP2800905B2 (ja) * 1991-10-28 1998-09-21 富士通株式会社 弾性表面波フィルタ
JPH061783A (ja) * 1992-06-17 1994-01-11 Mitsubishi Rayon Co Ltd 有機酸エステルの製造法
JPH0613833A (ja) * 1992-06-24 1994-01-21 Murata Mfg Co Ltd 弾性表面波素子
JP3194540B2 (ja) * 1992-07-13 2001-07-30 富士通株式会社 弾性表面波フィルタ

Also Published As

Publication number Publication date
DE69506137T2 (de) 1999-05-12
EP0663721B1 (de) 1998-11-25
EP0663721A1 (de) 1995-07-19
US5589806A (en) 1996-12-31
JP3375712B2 (ja) 2003-02-10
JPH07212182A (ja) 1995-08-11

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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