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Demodulator and method for second harmonic cancellation

  • US 6,834,086 B2
  • Filed: 12/21/2000
  • Issued: 12/21/2004
  • Est. Priority Date: 12/21/2000
  • Status: Expired due to Term
First Claim
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1. A demodulator circuit;

  • comprising;

    an oscillator having a first input coupled for receiving a signal;

    a phase shift circuit having an input coupled to an output of the oscillator;

    a first multiplier having a first input coupled for receiving the signal and a second input coupled to the output of the oscillator;

    a second multiplier having a first input coupled to an output of the phase shift circuit and a second input coupled to the output of the oscillator; and

    a summing circuit having a first input coupled to an output of the first multiplier, a second input coupled to an output of the second multiplier and an output.

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