CH358873A - Mechanical frequency filter - Google Patents

Mechanical frequency filter

Info

Publication number
CH358873A
CH358873A CH358873DA CH358873A CH 358873 A CH358873 A CH 358873A CH 358873D A CH358873D A CH 358873DA CH 358873 A CH358873 A CH 358873A
Authority
CH
Switzerland
Prior art keywords
frequency filter
mechanical frequency
mechanical
filter
frequency
Prior art date
Application number
Other languages
German (de)
Inventor
Kettel Ernst
Ohnsorge Horst
Original Assignee
Telefunken Gmbh
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 Telefunken Gmbh filed Critical Telefunken Gmbh
Publication of CH358873A publication Critical patent/CH358873A/en

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
    • H03H9/48—Coupling means therefor
    • H03H9/50—Mechanical coupling means

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
CH358873D 1957-03-22 1958-02-12 Mechanical frequency filter CH358873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1957T0013399 DE1242770B (en) 1957-03-22 1957-03-22 Mechanical frequency filter

Publications (1)

Publication Number Publication Date
CH358873A true CH358873A (en) 1961-12-15

Family

ID=7547323

Family Applications (1)

Application Number Title Priority Date Filing Date
CH358873D CH358873A (en) 1957-03-22 1958-02-12 Mechanical frequency filter

Country Status (4)

Country Link
CH (1) CH358873A (en)
DE (1) DE1242770B (en)
FR (1) FR1191702A (en)
NL (2) NL225484A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1491528B1 (en) * 1965-04-20 1972-04-27 Elektronische Bauelemente Veb MECHANICAL BANDPASS

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2124787C2 (en) * 1971-05-19 1984-07-12 ANT Nachrichtentechnik GmbH, 7150 Backnang Mechanical filter for electromechanical transducer - is folded into two or three planes for compactness and has oscillators connected by quarter wavelength wires
FR2360212A1 (en) * 1976-07-26 1978-02-24 Lignes Telegraph Telephon Electromechanical filter element coupling - includes quarter wave quartz elements to reduce parasitic resonance outside passband by eight five db

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2240306A (en) * 1939-10-24 1941-04-29 Bell Telephone Labor Inc Electromechanical filter
NL71852C (en) * 1946-01-07
NL77918C (en) * 1951-07-02
GB703020A (en) * 1951-07-18 1954-01-27 John Hugh Davey Walton Improvements in or relating to frequency filters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1491528B1 (en) * 1965-04-20 1972-04-27 Elektronische Bauelemente Veb MECHANICAL BANDPASS

Also Published As

Publication number Publication date
NL225484A (en)
FR1191702A (en) 1959-10-21
DE1242770B (en) 1967-06-22
NL114040C (en)

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