CH404819A - Filtre à cristal - Google Patents

Filtre à cristal

Info

Publication number
CH404819A
CH404819A CH1025562A CH1025562A CH404819A CH 404819 A CH404819 A CH 404819A CH 1025562 A CH1025562 A CH 1025562A CH 1025562 A CH1025562 A CH 1025562A CH 404819 A CH404819 A CH 404819A
Authority
CH
Switzerland
Prior art keywords
crystal filter
crystal
filter
Prior art date
Application number
CH1025562A
Other languages
English (en)
Inventor
Sydney Chester Alan
Original Assignee
Mini Of Aviat In Her Majesty S
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 Mini Of Aviat In Her Majesty S filed Critical Mini Of Aviat In Her Majesty S
Publication of CH404819A publication Critical patent/CH404819A/fr

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1208—Frequency selective two-port networks using amplifiers with feedback comprising an electromechanical resonator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1213—Frequency selective two-port networks using amplifiers with feedback using transistor amplifiers
CH1025562A 1961-08-29 1962-08-29 Filtre à cristal CH404819A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB31047/61A GB973163A (en) 1961-08-29 1961-08-29 Improvements in or relating to crystal filters

Publications (1)

Publication Number Publication Date
CH404819A true CH404819A (fr) 1965-12-31

Family

ID=10317164

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1025562A CH404819A (fr) 1961-08-29 1962-08-29 Filtre à cristal

Country Status (6)

Country Link
US (1) US3221265A (fr)
BE (1) BE621743A (fr)
CH (1) CH404819A (fr)
DE (1) DE1255827B (fr)
GB (1) GB973163A (fr)
NL (1) NL282567A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6177409A (ja) * 1984-09-21 1986-04-21 Sharp Corp ノイズフイルタ
GB2433367B (en) * 2005-12-03 2010-11-10 Peter John Jones Filter using tuning fork crystals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE709817C (de) * 1936-11-20 1941-08-27 Telefunken Gmbh Kristallfilter veraenderbarer Bandbreite
GB509040A (en) * 1937-10-06 1939-07-06 James Robinson Improvements in electrical frequency selective circuits
US2510868A (en) * 1945-12-14 1950-06-06 Press Wireless Inc Wave transmission filter circuits
US2910657A (en) * 1955-02-18 1959-10-27 Gen Electric Crystal filter

Also Published As

Publication number Publication date
US3221265A (en) 1965-11-30
NL282567A (fr)
GB973163A (en) 1964-10-21
BE621743A (fr)
DE1255827B (de) 1967-12-07

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