GB1136136A - Multi-channel single-sideband carrier frequency system - Google Patents

Multi-channel single-sideband carrier frequency system

Info

Publication number
GB1136136A
GB1136136A GB3076266A GB3076266A GB1136136A GB 1136136 A GB1136136 A GB 1136136A GB 3076266 A GB3076266 A GB 3076266A GB 3076266 A GB3076266 A GB 3076266A GB 1136136 A GB1136136 A GB 1136136A
Authority
GB
United Kingdom
Prior art keywords
carrier
channel
carrier frequency
july
modulated
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
GB3076266A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1136136A publication Critical patent/GB1136136A/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
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/15—Cathodes heated directly by an electric current
    • H01J1/18—Supports; Vibration-damping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/18—Frequency-division multiplex systems in which all the carriers are amplitude-modulated

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Amplitude Modulation (AREA)

Abstract

1,136,136. Frequency multiplex carrier systems. INTERNATIONAL STANDARD ELECTRIC CORP. 8 July, 1966 [15 July, 1965], No. 30762/66. Heading H4R. Multi-channel carrier frequency terminal is provided using printed, thin film, or thick film circuits which include filters composed of RC networks with piezo-electric or electrostrictive resonators to sharpen the attenuation peaks. The frequency transposition at the terminal is provided using identical filters for each channel. As described speech channels are modulated by a 48 kc. carrier and the upper sideband selected by a 48-52 kc./s. band pass filter. The resulting signals are each modulated by a respective one of a group of carrier frequencies of 112-116-120- - - -152-156 kc./s. to provide a set of channels in the range 60 to 108 kc./s. which are selected by a single common band pass filter of pass band 60-108 kc./s.
GB3076266A 1965-07-15 1966-07-08 Multi-channel single-sideband carrier frequency system Expired GB1136136A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1965ST024138 DE1257219B (en) 1965-07-15 1965-07-15 Channel converter to set up the CCITT basic group 60 to 108 kHz for a multi-channel single sideband carrier frequency system

Publications (1)

Publication Number Publication Date
GB1136136A true GB1136136A (en) 1968-12-11

Family

ID=7459982

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3076266A Expired GB1136136A (en) 1965-07-15 1966-07-08 Multi-channel single-sideband carrier frequency system

Country Status (5)

Country Link
BE (1) BE684178A (en)
DE (1) DE1257219B (en)
ES (1) ES329110A1 (en)
GB (1) GB1136136A (en)
NL (1) NL6609809A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE430845A (en) * 1937-10-30
DE861861C (en) * 1943-05-18 1953-01-05 Siemens Ag Multiple carrier frequency transmission system

Also Published As

Publication number Publication date
ES329110A1 (en) 1967-05-01
DE1257219B (en) 1967-12-28
BE684178A (en) 1967-01-16
NL6609809A (en) 1967-01-16

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