| 摘要 |
Techniques for providing low-cost and effective jammer rejection for a radio receiver. In an aspect, a notch filter (410) is provided between a transformer (153) and a differential mixer (161 ) in the receiver. The notch frequency of the notch filter may be selected to correspond to an expected jammer frequency to effectively attenuate the jammer signal prior to down-conversion mixing by the mixer. The notch filter may be implemented using various techniques, e.g., an L-C combination having adjustable capacitance, and/or elliptic or Chebyshev filters. |
