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BE880538A - Reseau de filtre a cristal monolithique sans industeurs - Google Patents

Reseau de filtre a cristal monolithique sans industeurs

Info

Publication number
BE880538A
BE880538A BE0/198506A BE198506A BE880538A BE 880538 A BE880538 A BE 880538A BE 0/198506 A BE0/198506 A BE 0/198506A BE 198506 A BE198506 A BE 198506A BE 880538 A BE880538 A BE 880538A
Authority
BE
Belgium
Prior art keywords
industries
filter network
crystal filter
monolithic crystal
monolithic
Prior art date
Application number
BE0/198506A
Other languages
English (en)
Original Assignee
Swanson Thomas W
Herzig Paul A
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 Swanson Thomas W, Herzig Paul A filed Critical Swanson Thomas W
Publication of BE880538A publication Critical patent/BE880538A/fr

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/542—Filters comprising resonators of piezoelectric or electrostrictive material including passive elements

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Filters And Equalizers (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
BE0/198506A 1978-12-11 1979-12-11 Reseau de filtre a cristal monolithique sans industeurs BE880538A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/968,302 US4246554A (en) 1978-12-11 1978-12-11 Inductorless monolithic crystal filter network

Publications (1)

Publication Number Publication Date
BE880538A true BE880538A (fr) 1980-06-11

Family

ID=25514037

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/198506A BE880538A (fr) 1978-12-11 1979-12-11 Reseau de filtre a cristal monolithique sans industeurs

Country Status (10)

Country Link
US (1) US4246554A (fr)
EP (1) EP0020729B1 (fr)
JP (1) JPS55501046A (fr)
BE (1) BE880538A (fr)
CA (1) CA1149477A (fr)
DK (1) DK155065C (fr)
GB (1) GB2048011B (fr)
IT (1) IT1164777B (fr)
SE (1) SE446681B (fr)
WO (1) WO1980001226A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4790914A (en) * 1985-09-30 1988-12-13 The Dow Chemical Company Electrolysis process using concentric tube membrane electrolytic cell
US4784735A (en) * 1986-11-25 1988-11-15 The Dow Chemical Company Concentric tube membrane electrolytic cell with an internal recycle device
US5030934A (en) * 1989-07-05 1991-07-09 Motorola, Inc. Crystal notch filter comprising discrete quartz crystals coupled to a trimmable RC bridging network
JP3040035B2 (ja) * 1992-09-18 2000-05-08 ローム株式会社 中間周波増幅回路を備えた受信機
US20050093652A1 (en) * 2003-10-31 2005-05-05 Qing Ma Size scaling of film bulk acoustic resonator (FBAR) filters using impedance transformer (IT) or balun
US8692629B2 (en) * 2008-05-23 2014-04-08 Cornell University Generation of high-frequency, high-power electrical signals from low-frequency, low-power lattice network structures as sources
WO2012079038A2 (fr) 2010-12-10 2012-06-14 Peregrine Semiconductor Corporation Procédé, système et appareil pour circuits résonateurs et résonateurs à modulation
US9300038B2 (en) 2010-12-10 2016-03-29 Peregrine Semiconductor Corporation Method, system, and apparatus for resonator circuits and modulating resonators

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2248776A (en) * 1938-07-28 1941-07-08 Bell Telephone Labor Inc Wave filter
NL283486A (fr) * 1961-09-22
US3437848A (en) * 1964-09-24 1969-04-08 Telefunken Patent Piezoelectric plate filter
US3564463A (en) * 1966-04-11 1971-02-16 Bell Telephone Labor Inc Monolithic piezoelectric filter having mass loaded electrodes for resonation regions acoustically coupled together
US3401275A (en) * 1966-04-14 1968-09-10 Clevite Corp Composite resonator
US3585537A (en) * 1969-02-10 1971-06-15 Bell Telephone Labor Inc Electric wave filters
GB1277614A (en) * 1969-03-07 1972-06-14 Standard Telephones Cables Ltd An electromechanical resonator
BE758421A (fr) * 1969-11-06 1971-05-04 Automatic Elect Lab Filtre passe-bande a cristal polylithique, presentant des frequences polaires d'attenuation dans la bande d'arret inferieure
US3613031A (en) * 1969-12-15 1971-10-12 Hughes Aircraft Co Crystal ladder network having improved passband attenuation characteristic
DE2001433C3 (de) * 1970-01-07 1983-06-01 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Bandpaßfilter
US3704443A (en) * 1970-08-27 1972-11-28 Us Navy Hydrodynamic transducer
US3716808A (en) * 1971-05-20 1973-02-13 Motorola Inc Bandpass filter including monolithic crystal elements with resonating portions selected for symmetrical response
US3704433A (en) * 1971-05-27 1972-11-28 Bell Telephone Labor Inc Band-elimination filter
US3723920A (en) * 1971-06-24 1973-03-27 Gte Automatic Electric Lab Inc Crystal filter assembly
JPS50142141A (fr) * 1974-05-07 1975-11-15
US3947784A (en) * 1974-09-19 1976-03-30 Motorola, Inc. Dual-coupled monolithic crystal element for modifying response of filter
US4013982A (en) * 1974-10-22 1977-03-22 International Standard Electric Corporation Piezoelectric crystal unit
US3944951A (en) * 1974-11-21 1976-03-16 Bell Telephone Laboratories, Incorporated Monolithic crystal filter
CA1041186A (fr) * 1976-04-28 1978-10-24 Henry K. Yee Filtre a cristal monolithe
CA1101945A (fr) * 1977-04-15 1981-05-26 Henry K. Yee Filtre de bande laterale unique a cristal monolithique

Also Published As

Publication number Publication date
DK155065B (da) 1989-01-30
EP0020729A4 (fr) 1981-05-15
EP0020729A1 (fr) 1981-01-07
EP0020729B1 (fr) 1990-09-26
JPS55501046A (fr) 1980-11-27
SE8005619L (sv) 1980-08-08
SE446681B (sv) 1986-09-29
DK155065C (da) 1989-07-03
GB2048011A (en) 1980-12-03
CA1149477A (fr) 1983-07-05
WO1980001226A1 (fr) 1980-06-12
GB2048011B (en) 1983-09-07
US4246554A (en) 1981-01-20
IT1164777B (it) 1987-04-15
DK345780A (da) 1980-08-11
IT7951055A0 (it) 1979-12-11

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: SWANSON THOMAS W.

Effective date: 19961231

Owner name: HERZIG PAUL A.

Effective date: 19961231