GB823833A - Improvements in or relating to channel combining arrangements for multichannel carrier systems - Google Patents

Improvements in or relating to channel combining arrangements for multichannel carrier systems

Info

Publication number
GB823833A
GB823833A GB71058A GB71058A GB823833A GB 823833 A GB823833 A GB 823833A GB 71058 A GB71058 A GB 71058A GB 71058 A GB71058 A GB 71058A GB 823833 A GB823833 A GB 823833A
Authority
GB
United Kingdom
Prior art keywords
band
channel
stop
channels
filters
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
GB71058A
Inventor
Hector Thomas Prior
Peter Kenneth Wall
William Arthur Brading
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
Priority to GB71058A priority Critical patent/GB823833A/en
Publication of GB823833A publication Critical patent/GB823833A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/04—Frequency-transposition arrangements
    • 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
    • H03H7/1741—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
    • H03H7/17—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

823,833. Multiplex systems. STANDARD TELEPHONES & CABLES Ltd. Jan. 8, 1958, No. 710/58. Drawings to Specification. Class 40 (4). [Also in Group XL (b)] In a multi-channel carrier current system in which the channels occupy equal width contiguous frequency bands of the frequency spectrum, an arrangement for combining or separating the channels consists in dividing the channel band-pass filters into two groups comprising those of the odd- and even-numbered channels, respectively (the channels being numbered in order of increasing frequency of the channel frequency bands), the two groups of channel band-pass filters being connected to a single transmission circuit by respective bandstop filters through means, such as a hybrid transformer, preventing interaction between the two band-stop filters, each band-stop filter having a plurality of stop bands centred on frequencies such that the pass band of each channel band-pass filter of its group lies between two adjacent stop bands. An embodiment of a suitable band-stop filter is described.
GB71058A 1958-01-08 1958-01-08 Improvements in or relating to channel combining arrangements for multichannel carrier systems Expired GB823833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB71058A GB823833A (en) 1958-01-08 1958-01-08 Improvements in or relating to channel combining arrangements for multichannel carrier systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB71058A GB823833A (en) 1958-01-08 1958-01-08 Improvements in or relating to channel combining arrangements for multichannel carrier systems

Publications (1)

Publication Number Publication Date
GB823833A true GB823833A (en) 1959-11-18

Family

ID=9709186

Family Applications (1)

Application Number Title Priority Date Filing Date
GB71058A Expired GB823833A (en) 1958-01-08 1958-01-08 Improvements in or relating to channel combining arrangements for multichannel carrier systems

Country Status (1)

Country Link
GB (1) GB823833A (en)

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