SE7704852L - Enkristallfilterenhet - Google Patents

Enkristallfilterenhet

Info

Publication number
SE7704852L
SE7704852L SE7704852A SE7704852A SE7704852L SE 7704852 L SE7704852 L SE 7704852L SE 7704852 A SE7704852 A SE 7704852A SE 7704852 A SE7704852 A SE 7704852A SE 7704852 L SE7704852 L SE 7704852L
Authority
SE
Sweden
Prior art keywords
single crystal
filter unit
crystal filter
unit
filter
Prior art date
Application number
SE7704852A
Other languages
English (en)
Inventor
H K-H Yee
Original Assignee
Northern Telecom 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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of SE7704852L publication Critical patent/SE7704852L/sv

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
    • H03H9/542—Filters comprising resonators of piezoelectric or electrostrictive material including passive elements

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
SE7704852A 1976-04-28 1977-04-27 Enkristallfilterenhet SE7704852L (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA251,326A CA1041186A (en) 1976-04-28 1976-04-28 Monolithic crystal filters
US05/681,438 US4028647A (en) 1976-04-28 1976-04-29 Monolithic crystal filters

Publications (1)

Publication Number Publication Date
SE7704852L true SE7704852L (sv) 1977-10-29

Family

ID=25668282

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7704852A SE7704852L (sv) 1976-04-28 1977-04-27 Enkristallfilterenhet

Country Status (8)

Country Link
US (1) US4028647A (sv)
JP (1) JPS52132655A (sv)
CA (1) CA1041186A (sv)
DE (1) DE2713882A1 (sv)
FR (1) FR2349999A1 (sv)
GB (1) GB1567269A (sv)
NL (1) NL7702711A (sv)
SE (1) SE7704852L (sv)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112147A (en) * 1977-05-13 1978-09-05 Western Electric Company, Inc. Method of manufacturing a monolithic crystal filter
US4423394A (en) * 1977-06-06 1983-12-27 Motorola, Inc. Multiple pole bandpass filter having monolithic crystal elements
US4246554A (en) * 1978-12-11 1981-01-20 E-Systems, Inc. Inductorless monolithic crystal filter network
US4433316A (en) * 1981-08-28 1984-02-21 General Electric Company Crystal filter and method for fabrication
AU573655B2 (en) * 1983-12-05 1988-06-16 Kay, L. Transducer array
FR2637136A1 (fr) * 1988-09-23 1990-03-30 Cepe Filtre piezoelectrique a selectivite amelioree utilisant des cellules monolithiques
US5051711A (en) * 1989-04-27 1991-09-24 Ten-Tec, Inc. Variable bandwidth crystal filter with varactor diodes
US5030934A (en) * 1989-07-05 1991-07-09 Motorola, Inc. Crystal notch filter comprising discrete quartz crystals coupled to a trimmable RC bridging network
JP4073177B2 (ja) * 2001-05-11 2008-04-09 株式会社村田製作所 圧電フィルタ
CN100566152C (zh) * 2002-09-12 2009-12-02 Nxp股份有限公司 具有抑制体声波滤波器中通带波纹的装置的体声波谐振器
JP5736774B2 (ja) * 2010-12-28 2015-06-17 株式会社大真空 帯域阻止フィルタ
WO2019178255A1 (en) * 2018-03-13 2019-09-19 Drexel University Enhanced circuity security through hidden state transitions

Family Cites Families (2)

* 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
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

Also Published As

Publication number Publication date
US4028647A (en) 1977-06-07
GB1567269A (en) 1980-05-14
DE2713882A1 (de) 1977-11-17
CA1041186A (en) 1978-10-24
NL7702711A (nl) 1977-11-01
JPS52132655A (en) 1977-11-07
FR2349999A1 (fr) 1977-11-25

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