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RECEIVER FOR RECEIVING A PLURALITY OF GNSS (GLOBAL NAVIGATION SATELLITE SYSTEM) SIGNALS

  • US 20160103225A1
  • Filed: 08/28/2015
  • Published: 04/14/2016
  • Est. Priority Date: 10/09/2014
  • Status: Active Grant
First Claim
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1. A receiver arranged to receive a plurality of Global Navigation Satellite System (GNSS) signals of different types, each type of said plurality of GNSS signals arranged according to a different global navigation standard, said receiver comprising:

  • a radio frequency (RF) section, said radio frequency section including;

    at least one mixer arranged to receive said plurality of GNSS signals and arranged to receive at least one local frequency signal, said at least one mixer further arranged to generate a plurality of mixed signals, each of the plurality of mixed signals corresponding to one of the plurality of GNSS signals, the plurality of mixed signals including at least a first mixed signal derived from a first GNSS signal of a first type and a second mixed signal derived from a second GNSS signal of a second type; and

    a low intermediate frequency (IF) section electrically coupled to said at least one mixer, said low IF section including;

    a plurality of branches configured to process said plurality of mixed signals, said plurality of branches electrically coupled in parallel downstream of said at least one mixer, said plurality of branches including;

    a first branch to process said first mixed signal, said first branch including an image rejection filter and at least one second mixer, said image rejection filter configured to reject an image signal of the first mixed signal and said at least one second mixer configured to mix an output signal from said image rejection filter with a second local frequency signal to derive a first remixed signal; and

    a bypass branch electrically coupled upstream said image rejection filter and downstream said at least one second mixer, said bypass branch including an adjustment module configured to adjust said second mixed signal to overlap a band of an adjusted second mixed signal with a band of said first remixed signal; and

    a low IF filter electrically coupled downstream said bypass branch and said at least one second mixer, said low IF filter configured to band pass filter said first remixed signal and said adjusted second mixed signal.

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