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Oscillator frequency offsets

  • US 20030220086A1
  • Filed: 05/23/2002
  • Published: 11/27/2003
  • Est. Priority Date: 05/23/2002
  • Status: Abandoned Application
First Claim
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1. A method of producing an output signal having an output frequency related to a local oscillator frequency, the method comprising:

  • a) feeding an input signal having an input frequency into a double quadrature mixer circuit;

    b) feeding a local oscillator signal into the circuit, the local oscillator signal having the local oscillator frequency; and

    c) receiving the output signal from an output of the circuit, the output signal having an output frequency substantially equal to a value chosen from a group consisting of;

    a difference of the oscillator frequency subtracted from the input frequency; and

    the sum of the local oscillator frequency and the input frequency.

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