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Method and system for power line null detection and automatic frequency and gain control

  • US 6,456,192 B1
  • Filed: 04/19/2000
  • Issued: 09/24/2002
  • Est. Priority Date: 04/19/2000
  • Status: Expired due to Term
First Claim
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1. A system for the detection and selection of a optimal power line transmission frequency, comprising:

  • a transmitter, said transmitter further comprising;

    (A) a logic device receiving information from a receiver;

    (B) a phase locked loop connected to said logic device for selecting a desired transmission frequency;

    (C) an oscillator receiving a frequency control signal from said phase locked loop;

    (D) a controllable gain output amplifier receiving a control signal from said logic device and receiving a carrier frequency signal from said oscillator; and

    (E) a connection to an AC power line channel, said connection electrically connected to said controllable gain output amplifier.

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