×

Systems and methods for cancelling interferers in a receiver

  • US 8,594,603 B2
  • Filed: 11/08/2010
  • Issued: 11/26/2013
  • Est. Priority Date: 11/08/2009
  • Status: Active Grant
First Claim
Patent Images

1. A system for cancelling interferers in a receiver, comprising:

  • a first mixer in a main path that downconverts a first RF signal to form a main baseband or intermediate-frequency signal;

    a second mixer in an alternate path that downconverts a second RF signal to form an alternate baseband or intermediate-frequency signal;

    a high-pass filter that filters the alternate baseband or intermediate-frequency signal to produce a high-pass-filtered alternate baseband or intermediate-frequency signal;

    a combiner that combines the main baseband or intermediate-frequency signal and the high-pass-filtered alternate baseband or intermediate-frequency signal to form a combined signal; and

    a low-pass filter that forms a baseband or intermediate-frequency signal based on the combined signal,wherein the first RF signal and the second RF signal are both based on a third RF signal, and wherein the main baseband or intermediate-frequency signal and the high-pass-filtered alternate baseband or intermediate-frequency signal, when combined, cancel out an interferer in the third RF signal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×