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Method of down converting high-frequency signals

  • US 8,085,185 B2
  • Filed: 11/02/2009
  • Issued: 12/27/2011
  • Est. Priority Date: 11/02/2009
  • Status: Active Grant
First Claim
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1. A method of down-converting comprising:

  • coupling a first high-frequency signal to a first detector and to a second detector;

    receiving a received signal at an antenna;

    providing the received signal to at least the first detector;

    detecting the high-frequency signal and the received signal to produce a first detected signal including a first detected high-frequency signal and a demodulated signal;

    concurrently detecting the high-frequency signal to produce a second detected high-frequency signal; and

    subtracting the second detected signal from the first detected signal so as to cancel amplitude-modulated noise on a detected signal output, the detected signal output including the demodulated signal.

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