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Multi-input multi-frequency synthesizing apparatus and method for multi-band RF receiver

  • US 20070140392A1
  • Filed: 05/24/2006
  • Published: 06/21/2007
  • Est. Priority Date: 12/16/2005
  • Status: Active Grant
First Claim
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1. A frequency synthesizer comprising:

  • a first multi-input double side band (DSB) mixer which synthesizes a first input signal and a second input signal, which are selected from a plurality of high frequency signals, and generates a first synthesized signal;

    a second multi-input DSB mixer which synthesizes a Q signal of the first input signal and a Q signal of the second input signal, and generates a second synthesized signal; and

    a single side band (SSB) signal selection unit which generates a third synthesized signal whose frequency is a synthesis of a frequency of the first input signal and a frequency of the second input signal, from the first synthesized signal and the second synthesized signal.

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