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IMPROVED COUPLING ARRANGEMENT FOR POWER LINE CARRIER SYSTEMS

  • US 3,846,638 A
  • Filed: 09/06/1973
  • Issued: 11/05/1974
  • Est. Priority Date: 10/02/1972
  • Status: Expired due to Term
First Claim
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1. In a power line carrier system, an improved arrangement for coupling the carrier system to at least two phase wires of an electrical power transmission line, said improved arrangement comprising:

  • a. first and second impedance matching transformers each having coupled primary and secondary windings;

    b. means for coupling said primary winding of said first impedance matching transformer to a first phase wire of said electrical power transmission line;

    c. means for coupling said primary winding of said second impedance matching transformer to a second phase wire of said electrical power transmission line;

    d. an isolation transformer having coupled primary and secondary windings, said primary winding having a center tap between its ends;

    e. means, including at least one coaxial line, for respectively cOnnecting one end of each of said secondary windings of said impedance matching transformers to one of said ends of said primary winding of said isolation transformer;

    f. a common impedance having one end connected to said center tap of said isolation transformer primary winding and the other end connected to the other ends of said secondary windings of said impedance matching transformers;

    g. and a coaxial line connected to said secondary winding of said isolation transformer for connection to a carrier system.

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