FR2078805A5 - - Google Patents

Info

Publication number
FR2078805A5
FR2078805A5 FR7105635A FR7105635A FR2078805A5 FR 2078805 A5 FR2078805 A5 FR 2078805A5 FR 7105635 A FR7105635 A FR 7105635A FR 7105635 A FR7105635 A FR 7105635A FR 2078805 A5 FR2078805 A5 FR 2078805A5
Authority
FR
France
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
Application number
FR7105635A
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of FR2078805A5 publication Critical patent/FR2078805A5/fr
Expired 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
    • H03H9/545—Filters comprising resonators of piezoelectric or electrostrictive material including active elements

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Networks Using Active Elements (AREA)
FR7105635A 1969-10-10 1971-02-18 Expired FR2078805A5 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US86536569A 1969-10-10 1969-10-10
US1279970A 1970-02-19 1970-02-19
US4949870A 1970-06-24 1970-06-24
US9872270A 1970-12-16 1970-12-16
JP16080277A JPS5489460A (en) 1969-10-10 1977-12-26 Piezooelectric porcelain filter

Publications (1)

Publication Number Publication Date
FR2078805A5 true FR2078805A5 (fr) 1971-11-05

Family

ID=27528245

Family Applications (2)

Application Number Title Priority Date Filing Date
FR7036600A Expired FR2065275A5 (fr) 1969-10-10 1970-10-09
FR7105635A Expired FR2078805A5 (fr) 1969-10-10 1971-02-18

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR7036600A Expired FR2065275A5 (fr) 1969-10-10 1970-10-09

Country Status (7)

Country Link
US (4) US3633134A (fr)
JP (1) JPS5489460A (fr)
DE (1) DE2104779C3 (fr)
FR (2) FR2065275A5 (fr)
GB (2) GB1332141A (fr)
NL (1) NL174314C (fr)
SE (1) SE373995B (fr)

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3633134A (en) * 1969-10-10 1972-01-04 Motorola Inc Crystal band pass filter circuit
JPS4944648A (fr) * 1972-08-31 1974-04-26
JPS5523489B2 (fr) * 1972-12-18 1980-06-23
JPS5438840Y2 (fr) * 1973-11-16 1979-11-17
US4035732A (en) * 1974-10-03 1977-07-12 The United States Of America As Represented By The Secretary Of The Army High dynamic range receiver front end mixer requiring low local oscillator injection power
US4013982A (en) * 1974-10-22 1977-03-22 International Standard Electric Corporation Piezoelectric crystal unit
DE2610183A1 (de) * 1975-03-12 1976-09-23 Murata Manufacturing Co Wellenfilter mit akustischer oberflaechenleitung
US3983518A (en) * 1975-04-24 1976-09-28 De Statt Der Nederlanden, Te Dezen Vertegenwoordigd Door De Directeur-Generaal Der Posterijen, Telegrafie En Telefonie Filter chain
US4045753A (en) * 1975-05-09 1977-08-30 Toko, Inc. Ceramic filter
US4135158A (en) * 1975-06-02 1979-01-16 Motorola, Inc. Universal automotive electronic radio
US4006437A (en) * 1975-06-27 1977-02-01 Bell Telephone Laboratories, Incorporated Frequency filter
US4103264A (en) * 1976-01-30 1978-07-25 Vernitron Corporation Wave filter and process for making same
DE2715202A1 (de) * 1977-04-05 1978-10-19 Draloric Electronic Piezoelektrisches filter und verfahren zu seiner herstellung
US4149102A (en) * 1977-10-31 1979-04-10 Motorola, Inc. Piezoelectric monolithic crystal element having improved response
US4287493A (en) * 1979-01-25 1981-09-01 Murata Manufacturing Co., Ltd. Piezoelectric filter
US4365181A (en) * 1979-07-18 1982-12-21 Murata Manufacturing Co., Ltd. Piezoelectric vibrator with damping electrodes
US4384229A (en) * 1980-02-14 1983-05-17 Nippon Electric Co., Ltd. Temperature compensated piezoelectric ceramic resonator unit
US4329666A (en) * 1980-08-11 1982-05-11 Motorola, Inc. Two-pole monolithic crystal filter
FR2491272B1 (fr) * 1980-09-30 1987-11-27 Clei Alain Filtre piezoelectrique a resistances de charge integrees et procede de fabrication
WO1982004167A1 (fr) * 1981-05-18 1982-11-25 Lewis C Spence Filtre a bande passante et etage de gain
NL8105147A (nl) * 1981-11-13 1983-06-01 Philips Nv Fm-ontvanger voorzien van een ratiodetektor met siliciumdiodes.
US4491761A (en) * 1981-12-28 1985-01-01 United Technologies Corporation Planar piezoelectric deflector with arrays of alternate piezoelectric effect
US4554678A (en) * 1982-12-13 1985-11-19 Honeywell Inc. Wireless receiver having crystal filter at outputs of preamplifier
US4516094A (en) * 1983-12-23 1985-05-07 Gte Laboratories Incorporated Acoustic surface wave device
DE3409927A1 (de) * 1984-03-17 1985-09-26 Ernst Leitz Wetzlar Gmbh, 6330 Wetzlar Breitbandiges anpassungsnetzwerk
JPH0656941B2 (ja) * 1984-06-12 1994-07-27 株式会社村田製作所 群遅延特性改善ラダー型圧電フィルタ
US4584499A (en) * 1985-04-12 1986-04-22 General Electric Company Autoresonant piezoelectric transformer signal coupler
US4906840A (en) * 1988-01-27 1990-03-06 The Board Of Trustees Of Leland Stanford Jr., University Integrated scanning tunneling microscope
US5065066A (en) * 1989-07-19 1991-11-12 Murata Mfg. Co., Ltd. Piezoelectric resonator
US5184043A (en) * 1989-12-05 1993-02-02 Murata Manufacturing Co., Ltd. Piezoelectric resonator
JPH03185908A (ja) * 1989-12-14 1991-08-13 Murata Mfg Co Ltd トラップ回路
US5231327A (en) * 1990-12-14 1993-07-27 Tfr Technologies, Inc. Optimized piezoelectric resonator-based networks
GB9118297D0 (en) * 1991-08-24 1991-10-09 Motorola Gmbh If crystal filter
US5189593A (en) * 1991-11-04 1993-02-23 Motorola, Inc. Integrated distributed resistive-capacitive network
JP3125454B2 (ja) * 1992-07-07 2001-01-15 株式会社村田製作所 ３端子型圧電共振子
JPH0629774A (ja) * 1992-07-07 1994-02-04 Tdk Corp 圧電セラミックフィルタ回路及び圧電セラミックフィルタ
JP3094717B2 (ja) * 1993-02-09 2000-10-03 株式会社村田製作所 圧電共振部品
JP2555926B2 (ja) * 1993-04-28 1996-11-20 日本電気株式会社 中間周波増幅回路
KR0164660B1 (ko) * 1994-02-23 1999-03-30 무라타 야스타카 압전부품
JPH07336189A (ja) * 1994-06-09 1995-12-22 Murata Mfg Co Ltd 圧電フィルタ
US5543756A (en) * 1995-05-12 1996-08-06 Hewlett-Packard Company Combined crystal and LC filter
JPH08335847A (ja) * 1995-06-08 1996-12-17 Murata Mfg Co Ltd 厚みすべり振動型２重モードフィルタ
US5661443A (en) * 1996-03-13 1997-08-26 Motorola, Inc. Apparatus and method for an asymmetrical multi-pole monolithic crystal filter having improved phase response
JPH10284985A (ja) * 1997-04-01 1998-10-23 Murata Mfg Co Ltd 圧電フィルタ
WO1998048464A1 (fr) * 1997-04-24 1998-10-29 Mitsubishi Denki Kabushiki Kaisha Element piezo-electrique a couche mince
JPH1141057A (ja) * 1997-07-17 1999-02-12 Murata Mfg Co Ltd 圧電振動部品
US6150703A (en) * 1998-06-29 2000-11-21 Trw Inc. Lateral mode suppression in semiconductor bulk acoustic resonator (SBAR) devices using tapered electrodes, and electrodes edge damping materials
GB9911880D0 (en) 1999-05-22 1999-07-21 Marconi Electronic Syst Ltd Amplifier circuit
JP4073177B2 (ja) * 2001-05-11 2008-04-09 株式会社村田製作所 圧電フィルタ
US7194247B2 (en) * 2001-09-26 2007-03-20 Nokia Corporation Dual-channel passband filtering system using acoustic resonators in lattice topology
JP4723215B2 (ja) * 2004-09-02 2011-07-13 富士通セミコンダクター株式会社 カットオフ周波数の調整を可能にしたフィルタ回路
CN115552796A (zh) * 2020-05-13 2022-12-30 京瓷Avx元器件公司 具有覆盖层和屏蔽层的滤波器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1969571A (en) * 1933-03-17 1934-08-07 Bell Telephone Labor Inc Transmission network
US2459019A (en) * 1946-12-27 1949-01-11 Bell Telephone Labor Inc Piezoelectric crystal filter
DE1416650A1 (de) * 1959-03-24 1968-10-10 Clevite Corp Elektrisches Wellenfilter

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2308258A (en) * 1939-10-05 1943-01-12 Rca Corp Band-pass filter circuits
US2373431A (en) * 1943-03-30 1945-04-10 Bell Telephone Labor Inc Electric wave filter
GB860618A (en) * 1958-11-24 1961-02-08 Pye Ltd Improvements in high frequency crystal filters
US2959752A (en) * 1959-03-25 1960-11-08 Hycon Eastern Inc Selective low distortion crystal filter
US3222622A (en) * 1962-08-14 1965-12-07 Clevite Corp Wave filter comprising piezoelectric wafer electroded to define a plurality of resonant regions independently operable without significant electro-mechanical interaction
US3217265A (en) * 1963-07-17 1965-11-09 Clevite Corp Electric wave filters utilizing piezoelectric resonators
US3430163A (en) * 1963-09-17 1969-02-25 Singer Co Bandpass filter having variable bandwidth but constant midband response and variable loading circuit for the same
JPS44123Y1 (fr) * 1965-05-01 1969-01-07
US3409787A (en) * 1966-11-15 1968-11-05 Air Force Usa Piezoelectric transducer system
US3633134A (en) * 1969-10-10 1972-01-04 Motorola Inc Crystal band pass filter circuit
US3593218A (en) * 1970-03-05 1971-07-13 Gen Motors Corp Piezoelectric filter network
JPS5161949A (ja) * 1974-11-28 1976-05-28 Sanyo Kikai Setsukei Kk Jidokyokyusochi

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1969571A (en) * 1933-03-17 1934-08-07 Bell Telephone Labor Inc Transmission network
US2459019A (en) * 1946-12-27 1949-01-11 Bell Telephone Labor Inc Piezoelectric crystal filter
DE1416650A1 (de) * 1959-03-24 1968-10-10 Clevite Corp Elektrisches Wellenfilter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ELECTRO-TECHNOLOGY, vol. 76, no. 5, novembre 1965, pages 36-43, Londres, GB. *

Also Published As

Publication number Publication date
DE2104779C3 (de) 1975-03-20
US4196407A (en) 1980-04-01
DE2046421A1 (de) 1971-04-22
NL174314B (nl) 1983-12-16
DE2046421B2 (de) 1976-02-26
GB1324921A (en) 1973-07-25
DE2104779B2 (de) 1974-07-25
DE2104779A1 (de) 1971-12-02
JPS5489460A (en) 1979-07-16
US3727154A (en) 1973-04-10
SE373995B (fr) 1975-02-17
NL7013920A (fr) 1971-04-14
US3633134A (en) 1972-01-04
GB1332141A (en) 1973-10-03
NL174314C (nl) 1984-05-16
US3676724A (en) 1972-07-11
FR2065275A5 (fr) 1971-07-23

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Legal Events

Date Code Title Description
ST Notification of lapse