DE69512809D1 - Hochfrequentes piezoelektrisches Kettenfilter und piezoelektrischer Resonator dafür - Google Patents

Hochfrequentes piezoelektrisches Kettenfilter und piezoelektrischer Resonator dafür

Info

Publication number
DE69512809D1
DE69512809D1 DE69512809T DE69512809T DE69512809D1 DE 69512809 D1 DE69512809 D1 DE 69512809D1 DE 69512809 T DE69512809 T DE 69512809T DE 69512809 T DE69512809 T DE 69512809T DE 69512809 D1 DE69512809 D1 DE 69512809D1
Authority
DE
Germany
Prior art keywords
piezoelectric
frequency
chain filter
therefor
piezoelectric resonator
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
DE69512809T
Other languages
English (en)
Inventor
Tatsuo Ogawa
Yasuhiko Nakagawa
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.)
Niterra Co Ltd
Original Assignee
NGK Spark Plug 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 NGK Spark Plug Co Ltd filed Critical NGK Spark Plug Co Ltd
Application granted granted Critical
Publication of DE69512809D1 publication Critical patent/DE69512809D1/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
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/581—Multiple crystal filters comprising ceramic piezoelectric layers
    • 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
    • H03H9/05—Holders; Supports
    • H03H9/10—Mounting in enclosures
    • H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
    • H03H9/1014—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device
    • H03H9/1028—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device the BAW device being held between spring terminals
    • 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
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/60—Electric coupling means therefor
    • H03H9/605—Electric coupling means therefor consisting of a ladder configuration

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
DE69512809T 1994-02-25 1995-02-16 Hochfrequentes piezoelektrisches Kettenfilter und piezoelektrischer Resonator dafür Expired - Lifetime DE69512809D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6052951A JPH07240661A (ja) 1994-02-25 1994-02-25 高周波用ラダー型圧電フィルタ

Publications (1)

Publication Number Publication Date
DE69512809D1 true DE69512809D1 (de) 1999-11-25

Family

ID=12929196

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69512809T Expired - Lifetime DE69512809D1 (de) 1994-02-25 1995-02-16 Hochfrequentes piezoelektrisches Kettenfilter und piezoelektrischer Resonator dafür

Country Status (4)

Country Link
US (1) US5574414A (de)
EP (1) EP0669713B1 (de)
JP (1) JPH07240661A (de)
DE (1) DE69512809D1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3218971B2 (ja) * 1996-04-01 2001-10-15 株式会社村田製作所 ラダー形フィルタ
US5955825A (en) 1996-04-26 1999-09-21 Mitsubishi Materials Corporation Crystal oscillator and manufacturing method thereof
JPH11330902A (ja) * 1998-05-11 1999-11-30 Murata Mfg Co Ltd ラダー型圧電フィルタ
JP3319393B2 (ja) * 1998-06-26 2002-08-26 株式会社村田製作所 ラダー型圧電フィルタ
US6426585B1 (en) * 1999-12-08 2002-07-30 Kazuo Kohno Thickness or length polarized piezoelectric transformer
GB0012439D0 (en) 2000-05-24 2000-07-12 Univ Cranfield Improvements to filters
GB0014630D0 (en) * 2000-06-16 2000-08-09 Koninkl Philips Electronics Nv Bulk accoustic wave filter
JP3903842B2 (ja) 2001-07-03 2007-04-11 株式会社村田製作所 圧電共振子、フィルタおよび電子通信機器
DE102005028927B4 (de) * 2005-06-22 2007-02-15 Infineon Technologies Ag BAW-Vorrichtung
DE102006023165B4 (de) * 2006-05-17 2008-02-14 Infineon Technologies Ag Verfahren zur Herstellung eines akustischen Spiegels aus alternierend angeordneten Schichten hoher und niedriger akustischer Impedanz
WO2012011238A1 (ja) * 2010-07-23 2012-01-26 日本電気株式会社 発振装置
WO2018182626A1 (en) * 2017-03-30 2018-10-04 Intel Corporation Device to eliminate spurious modes in solidly mounted acoustic resonators
WO2018182682A1 (en) * 2017-03-31 2018-10-04 Intel Corporation Spurious mode suppression using metal meshed frame around bulk acoustic wave resonators

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4633204A (en) * 1984-08-29 1986-12-30 Fujitsu Limited Mechanical filter
JPH07109971B2 (ja) * 1989-02-20 1995-11-22 株式会社村田製作所 フイルタ装置
US5084647A (en) * 1989-07-19 1992-01-28 Murata Manufacturing Co., Ltd. Piezoelectric filter
JP2717591B2 (ja) * 1990-03-30 1998-02-18 日本特殊陶業株式会社 梯子型電気濾波器
JP3074389B2 (ja) * 1990-05-21 2000-08-07 日本特殊陶業株式会社 高周波用ラダー型圧電フィルタ
US5260675A (en) * 1991-04-12 1993-11-09 Ngk Spark Plug Co., Ltd. Ladder-type electric filter device
JP3193403B2 (ja) * 1991-07-18 2001-07-30 日本特殊陶業株式会社 梯子型圧電フィルタ

Also Published As

Publication number Publication date
EP0669713A1 (de) 1995-08-30
JPH07240661A (ja) 1995-09-12
US5574414A (en) 1996-11-12
EP0669713B1 (de) 1999-10-20

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Legal Events

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