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GNSS SUPERBAND ASIC AND METHOD WITH SIMULTANEOUS MULTI-FREQUENCY DOWN CONVERSION

  • US 20130176171A1
  • Filed: 07/10/2012
  • Published: 07/11/2013
  • Est. Priority Date: 12/11/2008
  • Status: Abandoned Application
First Claim
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1. A method of simultaneously down-diverting global navigation satellite system (GNSS) signals in multiple frequency bands, which method comprises the steps of:

  • providing an integrated circuit (IC) with multiple signal paths;

    receiving GNSS signals corresponding to said frequency bands;

    providing a common local oscillator/synthesizer (LO/Synth);

    driving each of said signal paths with said LO/Synth;

    receiving in said signal paths GNSS signals corresponding to said frequency bands associated with said signal paths respectively;

    providing said LO/Synth with a common programmable divider;

    simultaneously down-converting said signals to lower intermediate frequencies (IF) with said programmable divider;

    providing a multiplexer with multiple out puts and located externally to said IC;

    connecting each said signal path to and receiving input from said multiplexer;

    providing multiple analog-to-digital converters (ADCs) and connecting each to said programmable divider;

    each said ADC receiving a down-converted signal as an input and providing a digital signal as an output;

    providing multiple low-noise amplifiers (LNAs) in said signal paths;

    electrically connecting each said LNA to a respective multiplexer output;

    providing first and second band pass filters located externally to said IC; and

    connecting each said BPF to a respective LNA.

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