GB677828A - Electrical wave transmission networks - Google Patents

Electrical wave transmission networks

Info

Publication number
GB677828A
GB677828A GB8119/50A GB811950A GB677828A GB 677828 A GB677828 A GB 677828A GB 8119/50 A GB8119/50 A GB 8119/50A GB 811950 A GB811950 A GB 811950A GB 677828 A GB677828 A GB 677828A
Authority
GB
United Kingdom
Prior art keywords
series
shunt
inductance
network
equal
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
GB8119/50A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB677828A publication Critical patent/GB677828A/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
    • H03H7/06—Frequency selective two-port networks including resistors
    • H03H7/07—Bridged T-filters
    • 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
    • H03H7/06—Frequency selective two-port networks including resistors
    • H03H7/065—Parallel T-filters
    • 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
    • H03H7/1725—Element to ground being common to different shunt paths, i.e. Y-structure
    • 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
    • H03H7/1758—Series LC in shunt or branch 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
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1766—Parallel 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
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1791—Combined LC in shunt or branch 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
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1708—Comprising bridging elements, i.e. elements in a series path without own reference to ground and spanning branching nodes of another series path

Landscapes

  • Ac-Ac Conversion (AREA)

Abstract

677,828. Impedance networks. WESTERN ELECTRIC CO., Inc. March 31, 1950 [March 31, 1949], No. 8119/50. Class 40 (viii). An impedance network comprises two T-sections in parallel, one consisting of two equal series capacities C1 and an interposed shunt containing an inductance ¢L3, the other consisting of two equal series inductances L1, and a shunt containing a capacity 2C1, the resonant frequency of a circuit consisting of the shunt branch containing ¢ L3 in series with the capacities C1 in parallel, being equal to that of the shunt branch containing 2C1 in series with the inductances L1 in parallel. If a parameter " b," which equal 4#f c RC 1 , where f c is the frequency at which the network phase shift is 180 degrees and R is the non-reactive image impedance of the network, falls between 2 and #2, this network can be derived from a symmetrical lattice prototype without calling for the use of mutual inductance to simulate negative inductance in any arm. In further embodiments, an inductance may be connected in series with the shunt capacity, or an inductance, or capacity, may bridge the series arms. Further in order to make the image impedance more nearly a constant resistance and provide an adjustment of the insertion loss of the network, variable resistances may be bridged over the series arms and arranged in a common portion of the shunt arms.
GB8119/50A 1949-03-31 1950-03-31 Electrical wave transmission networks Expired GB677828A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US677828XA 1949-03-31 1949-03-31

Publications (1)

Publication Number Publication Date
GB677828A true GB677828A (en) 1952-08-20

Family

ID=22078383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8119/50A Expired GB677828A (en) 1949-03-31 1950-03-31 Electrical wave transmission networks

Country Status (1)

Country Link
GB (1) GB677828A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1616688B1 (en) * 1962-06-15 1970-12-03 Siemens Ag All-pass element for equalization or simulation of delay time distortions
WO2011067178A1 (en) * 2009-12-01 2011-06-09 Thales Frequency-selective attenuator provided with an easily tunable t-structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1616688B1 (en) * 1962-06-15 1970-12-03 Siemens Ag All-pass element for equalization or simulation of delay time distortions
WO2011067178A1 (en) * 2009-12-01 2011-06-09 Thales Frequency-selective attenuator provided with an easily tunable t-structure

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