JPS57141144A - Stabilizing device for transmission characteristics of distribution line carriage - Google Patents

Stabilizing device for transmission characteristics of distribution line carriage

Info

Publication number
JPS57141144A
JPS57141144A JP2745481A JP2745481A JPS57141144A JP S57141144 A JPS57141144 A JP S57141144A JP 2745481 A JP2745481 A JP 2745481A JP 2745481 A JP2745481 A JP 2745481A JP S57141144 A JPS57141144 A JP S57141144A
Authority
JP
Japan
Prior art keywords
distribution line
carrier wave
switching part
dividing
transmission section
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.)
Pending
Application number
JP2745481A
Other languages
Japanese (ja)
Inventor
Koichi Oota
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.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing 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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Priority to JP2745481A priority Critical patent/JPS57141144A/en
Publication of JPS57141144A publication Critical patent/JPS57141144A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/56—Circuits for coupling, blocking, or by-passing of signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5483—Systems for power line communications using coupling circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To reduce the unstable phenomenon of line impedance during distribution line carriage by inserting a transmission section dividing device into a distribution line, and by dividing a transmission section only for a carrier signal without dividing the distribution line as a power supply line. CONSTITUTION:Transmission section dividing devices 11-1n-1 are inserted into a distribution line. The devices 11-1n-1 each have a coil L and a capacitor C connected in parallel, and the coil L and capacitor C have extremely large impedance against a carrier wave. Distribution line coupling parts C1 and C2 are provided, and a carrier wave is extracted and sent out. Therefore, when the carrier wave is inputted, the carrier wave is inputted to the coupling part C1 because the impedance of the LC circuit is high, and it is further inputted to an amplifier AMP1 through a switching part SW2. At this time, a detection part K1 detects the carrier wave to place a switching part SW1 at an S1 side. The carrier wave is amplified by an amplifier AMP and sent to the switching part SW1. In this case, since the switching part SW1 is at the S1 side, so the carrier wave is sent to a distribution line L2 through the coupling part C2.
JP2745481A 1981-02-26 1981-02-26 Stabilizing device for transmission characteristics of distribution line carriage Pending JPS57141144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2745481A JPS57141144A (en) 1981-02-26 1981-02-26 Stabilizing device for transmission characteristics of distribution line carriage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2745481A JPS57141144A (en) 1981-02-26 1981-02-26 Stabilizing device for transmission characteristics of distribution line carriage

Publications (1)

Publication Number Publication Date
JPS57141144A true JPS57141144A (en) 1982-09-01

Family

ID=12221563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2745481A Pending JPS57141144A (en) 1981-02-26 1981-02-26 Stabilizing device for transmission characteristics of distribution line carriage

Country Status (1)

Country Link
JP (1) JPS57141144A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5025254A (en) * 1973-07-05 1975-03-17
JPS5226109A (en) * 1975-08-22 1977-02-26 Tokyo Electric Power Co Inc:The Signal transmission equipment
JPS53137616A (en) * 1977-05-07 1978-12-01 Mitsubishi Electric Corp Transmission and repeating system of digital type

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5025254A (en) * 1973-07-05 1975-03-17
JPS5226109A (en) * 1975-08-22 1977-02-26 Tokyo Electric Power Co Inc:The Signal transmission equipment
JPS53137616A (en) * 1977-05-07 1978-12-01 Mitsubishi Electric Corp Transmission and repeating system of digital type

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