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DUAL MODE SATELLITE SIGNAL RECEIVER AND METHOD THEREOF

  • US 20090219204A1
  • Filed: 02/26/2009
  • Published: 09/03/2009
  • Est. Priority Date: 02/29/2008
  • Status: Active Grant
First Claim
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1. A dual mode satellite signal receiver capable of supporting at least two global navigation satellite systems, the dual mode satellite signal receiver comprising:

  • a frequency synthesizer operative to generate a local oscillator signal based on a reference frequency wherein the frequency synthesizer is capable of supporting multiple reference frequencies;

    a mixer operative to mix the local oscillator signal with a satellite signal and outputting a mixed signal where the mixed signal comprises a signal in an intermediate frequency band;

    a first filter operative to filter the mixed signal to reject an image signal and output an actual signal;

    a second filter operative to filter the actual signal received from the first filter to output a signal in a predetermined bandwidth based on a mode of the receiver; and

    a variable gain amplifier operative to amplify the signal received from the second filter to a predetermined level and output the amplified signal.

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