DE69619741D1 - Akustisches Oberflächenwellenfilter - Google Patents

Akustisches Oberflächenwellenfilter

Info

Publication number
DE69619741D1
DE69619741D1 DE69619741T DE69619741T DE69619741D1 DE 69619741 D1 DE69619741 D1 DE 69619741D1 DE 69619741 T DE69619741 T DE 69619741T DE 69619741 T DE69619741 T DE 69619741T DE 69619741 D1 DE69619741 D1 DE 69619741D1
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
DE69619741T
Other languages
English (en)
Other versions
DE69619741T2 (de
Inventor
Tadamasa Ushiroku
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing 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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Application granted granted Critical
Publication of DE69619741D1 publication Critical patent/DE69619741D1/de
Publication of DE69619741T2 publication Critical patent/DE69619741T2/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
DE69619741T 1995-08-14 1996-08-13 Akustisches Oberflächenwellenfilter Expired - Lifetime DE69619741T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20710595A JP3243976B2 (ja) 1995-08-14 1995-08-14 弾性表面波フィルタ

Publications (2)

Publication Number Publication Date
DE69619741D1 true DE69619741D1 (de) 2002-04-18
DE69619741T2 DE69619741T2 (de) 2002-08-01

Family

ID=16534291

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69619741T Expired - Lifetime DE69619741T2 (de) 1995-08-14 1996-08-13 Akustisches Oberflächenwellenfilter

Country Status (6)

Country Link
US (1) US5831493A (de)
EP (1) EP0758819B1 (de)
JP (1) JP3243976B2 (de)
KR (1) KR0177907B1 (de)
CA (1) CA2183281C (de)
DE (1) DE69619741T2 (de)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3614234B2 (ja) * 1996-03-14 2005-01-26 沖電気工業株式会社 共振器型弾性表面波フィルタ
GB2312109B (en) * 1996-03-29 2000-08-02 Advanced Saw Prod Sa Acoustic wave filter
GB2312110B (en) * 1996-03-29 2000-07-05 Advanced Saw Prod Sa Acoustic wave filter
US6137380A (en) * 1996-08-14 2000-10-24 Murata Manufacturing, Co., Ltd Surface acoustic wave filter utilizing a particularly placed spurious component of a parallel resonator
JP3728912B2 (ja) * 1998-02-17 2005-12-21 株式会社村田製作所 弾性表面波フィルタ
DE19730710C2 (de) * 1997-07-17 2002-12-05 Epcos Ag Oberflächenwellenakustikfilter mit verbesserter Flankensteilheit
JP3576367B2 (ja) * 1998-01-30 2004-10-13 沖電気工業株式会社 弾性表面波フィルタ
JP3301399B2 (ja) * 1998-02-16 2002-07-15 株式会社村田製作所 弾性表面波装置
JP3206548B2 (ja) * 1998-05-14 2001-09-10 株式会社村田製作所 表面波フィルタ、共用器、通信機装置
EP1030448B1 (de) 1998-05-19 2013-11-06 Panasonic Corporation Saw filter, einrichtung zur antennenteilung mit diesem filter und mobiles kommunikationsgerät mit diesem filter
US6937113B2 (en) * 1998-06-09 2005-08-30 Oki Electric Industry Co., Ltd. Branching filter package
JP3255128B2 (ja) 1998-11-24 2002-02-12 株式会社村田製作所 弾性表面波フィルタ
JP3419339B2 (ja) * 1999-03-11 2003-06-23 株式会社村田製作所 弾性表面波フィルタ、デュプレクサ、通信機装置
US6437662B1 (en) * 1999-08-11 2002-08-20 Murata Manufacturing Co., Ltd. Surface acoustic wave filter, duplexer and communication apparatus with combined substrate and number of finger pairs reducing pass band ripples
JP3780496B2 (ja) * 2000-06-30 2006-05-31 京セラ株式会社 弾性表面波フィルタ
US6570470B2 (en) * 2000-06-30 2003-05-27 Kyocera Corporation Surface acoustic wave ladder filter utilizing parallel resonators with different resonant frequencies
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
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
JP3980323B2 (ja) * 2001-10-26 2007-09-26 沖電気工業株式会社 弾性表面波分波器
JP3963253B2 (ja) 2001-12-14 2007-08-22 富士通メディアデバイス株式会社 弾性表面波素子及びこれを用いた分波器
JP2003289234A (ja) * 2002-01-28 2003-10-10 Murata Mfg Co Ltd 弾性表面波装置、通信装置
JP4056762B2 (ja) * 2002-02-25 2008-03-05 富士通メディアデバイス株式会社 弾性表面波装置
JP3896907B2 (ja) 2002-06-19 2007-03-22 株式会社村田製作所 弾性表面波フィルタ、分波器、通信機
DE10301934A1 (de) * 2003-01-20 2004-07-29 Epcos Ag Elektrisches Bauelement mit verringerter Substratfläche
JP2005045475A (ja) * 2003-07-28 2005-02-17 Murata Mfg Co Ltd 弾性表面波装置、通信機
JP4748166B2 (ja) * 2006-01-06 2011-08-17 株式会社村田製作所 弾性波フィルタ
JP2007209024A (ja) * 2007-03-22 2007-08-16 Oki Electric Ind Co Ltd 弾性表面波フィルタ
JP5356194B2 (ja) * 2009-11-30 2013-12-04 太陽誘電株式会社 フィルタ、分波器、通信モジュール
JP2012156741A (ja) 2011-01-26 2012-08-16 Panasonic Corp アンテナ共用器
JP6013829B2 (ja) * 2012-08-17 2016-10-25 太陽誘電株式会社 弾性波フィルタ、デュプレクサ及びモジュール
JP6332457B2 (ja) * 2014-07-28 2018-05-30 株式会社村田製作所 ラダー型フィルタ
WO2018003297A1 (ja) 2016-06-29 2018-01-04 株式会社村田製作所 マルチプレクサ、高周波フロントエンド回路及び通信装置
JP6798562B2 (ja) * 2016-10-28 2020-12-09 株式会社村田製作所 ラダー型フィルタ、デュプレクサ及び弾性波フィルタ装置
JP6913619B2 (ja) * 2017-12-12 2021-08-04 株式会社村田製作所 マルチプレクサ、高周波フロントエンド回路及び通信装置
WO2023054301A1 (ja) * 2021-09-29 2023-04-06 株式会社村田製作所 弾性波フィルタ装置およびマルチプレクサ
CN115513620B (zh) * 2022-09-23 2023-10-31 中国科学院物理研究所 一种微带图形层、其制备方法及其极宽阻带带通滤波器

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717217A (en) * 1980-07-07 1982-01-28 Nippon Telegr & Teleph Corp <Ntt> Cavity type elastic surface wave resonator
JPH0773177B2 (ja) * 1984-12-17 1995-08-02 株式会社東芝 弾性表面波共振子
JP2800905B2 (ja) * 1991-10-28 1998-09-21 富士通株式会社 弾性表面波フィルタ
JP3201017B2 (ja) * 1992-11-13 2001-08-20 株式会社村田製作所 梯子型弾性表面波フィルタ
DE69323163T2 (de) * 1992-12-01 1999-06-02 Japan Radio Co Ltd Akustischer Oberflächenwellenfilter und mobiles Kommunikationssystem mit solchem Filter
JP3001350B2 (ja) * 1993-05-19 2000-01-24 日本電気株式会社 弾性表面波フィルタ
JP3375712B2 (ja) * 1994-01-12 2003-02-10 松下電器産業株式会社 弾性表面波フィルタ
US5434466A (en) * 1994-05-31 1995-07-18 Motorola, Inc. Acoustic wave filter with reduced bulk-wave scattering loss and method
JPH08125489A (ja) * 1994-10-25 1996-05-17 Sanyo Electric Co Ltd 多重モード弾性表面波フィルター

Also Published As

Publication number Publication date
KR970013679A (ko) 1997-03-29
JPH0955640A (ja) 1997-02-25
KR0177907B1 (ko) 1999-04-01
CA2183281C (en) 1999-11-02
CA2183281A1 (en) 1997-02-15
EP0758819B1 (de) 2002-03-13
JP3243976B2 (ja) 2002-01-07
DE69619741T2 (de) 2002-08-01
US5831493A (en) 1998-11-03
EP0758819A1 (de) 1997-02-19

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Legal Events

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