GB1005357A - Bridge type filter network - Google Patents

Bridge type filter network

Info

Publication number
GB1005357A
GB1005357A GB4061662A GB4061662A GB1005357A GB 1005357 A GB1005357 A GB 1005357A GB 4061662 A GB4061662 A GB 4061662A GB 4061662 A GB4061662 A GB 4061662A GB 1005357 A GB1005357 A GB 1005357A
Authority
GB
United Kingdom
Prior art keywords
reactances
pair
arrangement shown
capacitances
oct
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
GB4061662A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB1005357A publication Critical patent/GB1005357A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1783—Combined LC in series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/0115—Frequency selective two-port networks comprising only inductors and capacitors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1716—Comprising foot-point elements
    • H03H7/1733—Element between different shunt or branch paths

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Filters And Equalizers (AREA)

Abstract

1,005,357. Electrical filter networks. STANDARD TELEPHONES & CABLES Ltd. Oct. 26, 1962 [Oct. 27, 1961], No. 40616/62. Heading H3U. Bridge-type filter network comprises four reactances in a serial loop, three being of the same type and the fourth being a reactive dipole exhibiting at least one resonance and at least one antiresonance frequency and at high frequency the reactive dipole being of the same type as at low frequency. In the arrangement shown in Fig. 7 the reactances aZ, bZ and cZ are capacitances where b is the geometric mean between a and c, and the fourth reactance yZ is constituted by one or more crystals in combination with one or more capacitances, Z being the normalized impedance. The pair of reactances aZ and bZ are connected between terminals 1 and 2 as are also the pair of reactances cZ and yZ, and the junctions between the two reactances of a pair of reactances are connected to terminals 3 and 4, respectively. The arrangement shown in Fig. 7 is such that the band-pass filter sections exhibit an infinite attenuation pole in the upper stopband. The arrangement shown in Fig. 9, incorporating reactances aY, bY, cY and yY, where Y is the normalized admittance, is used if an infinite attenuation pole is required in the lower stop-band. The filter networks referred to above are the equivalents of various networks discussed in the Specification.
GB4061662A 1961-10-27 1962-10-26 Bridge type filter network Expired GB1005357A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL270712 1961-10-27

Publications (1)

Publication Number Publication Date
GB1005357A true GB1005357A (en) 1965-09-22

Family

ID=19753370

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4061662A Expired GB1005357A (en) 1961-10-27 1962-10-26 Bridge type filter network

Country Status (2)

Country Link
BE (1) BE624164A (en)
GB (1) GB1005357A (en)

Also Published As

Publication number Publication date
BE624164A (en)

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