GB781033A - Improvements in electromechanical filters - Google Patents

Improvements in electromechanical filters

Info

Publication number
GB781033A
GB781033A GB23463/55A GB2346355A GB781033A GB 781033 A GB781033 A GB 781033A GB 23463/55 A GB23463/55 A GB 23463/55A GB 2346355 A GB2346355 A GB 2346355A GB 781033 A GB781033 A GB 781033A
Authority
GB
United Kingdom
Prior art keywords
discs
attached
coils
inactive
electromechanical
Prior art date
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
GB23463/55A
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.)
Collins Radio Co
Original Assignee
Collins Radio Co
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 Collins Radio Co filed Critical Collins Radio Co
Publication of GB781033A publication Critical patent/GB781033A/en
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
    • H03H9/62—Filters comprising resonators of magnetostrictive material
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/135—Driving means, e.g. electrodes, coils for networks consisting of magnetostrictive materials
    • 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

Abstract

781,033. Electromechanical filters. COLLINS RADIO CO. Aug. 15, 1955 [Nov. 17, 1954], No. 23463/55. Class 40 (8). The vibrating system of an electromechanical filter comprises a series of discs 43-48 supported at their peripheries by wires 42 which are attached at either end to a pair of inactive discs 37, 39. The discs 37, 39 are attached to input and output coils 22, 23 enclosed within tubes 19, 21. A magnetostrictive rod 52, e.g. of nickel-iron alloy, passes axially through the coils and the vibrating system and is attached, e.g. by welding, to the centres of the active discs 43-48. The wire is arranged to pass freely through central holes in the inactive discs 37, 39. Magnetic bias may be applied to the coils 22, 23 by means of permanent magnets 53, 54. In a modification, the supporting wires 42 are replaced by a cylinder which entirely encloses the discs. Specification 733,281 is referred to.
GB23463/55A 1954-11-17 1955-08-15 Improvements in electromechanical filters Expired GB781033A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US469388A US2808572A (en) 1954-11-17 1954-11-17 Center coupled filter

Publications (1)

Publication Number Publication Date
GB781033A true GB781033A (en) 1957-08-14

Family

ID=23863596

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23463/55A Expired GB781033A (en) 1954-11-17 1955-08-15 Improvements in electromechanical filters

Country Status (7)

Country Link
US (1) US2808572A (en)
BE (1) BE540777A (en)
CH (1) CH332314A (en)
DE (1) DE1116326B (en)
FR (1) FR1153858A (en)
GB (1) GB781033A (en)
NL (2) NL95629C (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1158588B (en) * 1960-05-14 1963-12-05 Telefunken Patent Electrostrictive torsional vibrator
US3135933A (en) * 1962-07-26 1964-06-02 Collins Radio Co M derived mechanical filter
US3351875A (en) * 1962-12-20 1967-11-07 Collins Radio Co Ring coupled mechanical filter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1678116A (en) * 1923-10-16 1928-07-24 Western Electric Co Device for the transmission of mechanical vibratory energy
US1666681A (en) * 1924-04-22 1928-04-17 Western Electric Co Mechanical wave filter
US2501488A (en) * 1946-07-19 1950-03-21 Zenith Radio Corp Magnetostrictively driven mechanical wave filter
US2617882A (en) * 1950-05-29 1952-11-11 Rca Corp Maximal flatness filter
US2693579A (en) * 1952-04-21 1954-11-02 Collins Radio Co Longitudinal support of mechanical filter
US2656516A (en) * 1952-08-14 1953-10-20 Collins Radio Co Filter using transverse supporting means
US2693580A (en) * 1953-07-06 1954-11-02 Collins Radio Co Electromechanical filter with center drive of disk

Also Published As

Publication number Publication date
NL199657A (en)
DE1116326B (en) 1961-11-02
CH332314A (en) 1958-08-31
US2808572A (en) 1957-10-01
FR1153858A (en) 1958-03-28
BE540777A (en)
NL95629C (en)

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