GB531798A - Improvements in or relating to electrical filter networks - Google Patents

Improvements in or relating to electrical filter networks

Info

Publication number
GB531798A
GB531798A GB2241839A GB2241839A GB531798A GB 531798 A GB531798 A GB 531798A GB 2241839 A GB2241839 A GB 2241839A GB 2241839 A GB2241839 A GB 2241839A GB 531798 A GB531798 A GB 531798A
Authority
GB
United Kingdom
Prior art keywords
filter
relating
filter networks
electrical filter
terminal
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
GB2241839A
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co 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 Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Priority to GB2241839A priority Critical patent/GB531798A/en
Publication of GB531798A publication Critical patent/GB531798A/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
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0095—Balance-unbalance or balance-balance networks using bulk acoustic wave devices
    • 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 piezo-electric or electrostrictive material
    • H03H9/542—Filters comprising resonators of piezo-electric or electrostrictive material including passive elements

Abstract

531,798. Filter networks. SIEMENS BROS. & CO., Ltd., and REED, M. Aug. 2, 1939, No. 22418. [Class 40 (iii)] In a bridge-type filter of the kind in which a differential transformer is employed to give the equivalent of a symmetrical lattice the terminal C is connected to an adjustable tapping on a resistance connected between the transformer windings or the terminal D is connected to an adjustable tapping on a resistance connected between the series connected impedance combinations LP, EP and LQ, EQ. In the filter shown the elements EP, EQ are piezo-electric crystals and the filter is of the band pass type.
GB2241839A 1939-08-02 1939-08-02 Improvements in or relating to electrical filter networks Expired GB531798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2241839A GB531798A (en) 1939-08-02 1939-08-02 Improvements in or relating to electrical filter networks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2241839A GB531798A (en) 1939-08-02 1939-08-02 Improvements in or relating to electrical filter networks

Publications (1)

Publication Number Publication Date
GB531798A true GB531798A (en) 1941-01-10

Family

ID=10179042

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2241839A Expired GB531798A (en) 1939-08-02 1939-08-02 Improvements in or relating to electrical filter networks

Country Status (1)

Country Link
GB (1) GB531798A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181615A (en) * 1985-10-15 1987-04-23 Gen Instr Coupling arrangements for coaxial cables
EP0332741A1 (en) * 1988-02-29 1989-09-20 Leybold Aktiengesellschaft Multistage vacuum pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181615A (en) * 1985-10-15 1987-04-23 Gen Instr Coupling arrangements for coaxial cables
GB2181615B (en) * 1985-10-15 1989-09-27 Gen Instr Coupling arrangements for coaxial cables
EP0332741A1 (en) * 1988-02-29 1989-09-20 Leybold Aktiengesellschaft Multistage vacuum pump

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