System for dynamically adapting the length of a filter
DDS spur mitigation in a high performance radar exciter
Spur mitigation techniques
Adaptive interference immunity control
Mitigating fractional spurs in fractional-N frequency synthesizer systems Patent #: 7636020
AbstractA receiver for a wireless communication device comprising a mechanism for performing spur mitigation. An AGC unit of the receiver is operable to determine when an amplitude of an ADC output signal associated with a received RF signal is outside a predetermined amplitude range. The AGC unit is operable to modify a gain associated with a VGA such that the ADC output signal has an amplitude within the predetermined amplitude rage. The first spur mitigation unit is operable to determine an estimate of a spur signal of the ADC output signal and remove the spur signal from the ADC output signal based on the estimate of the spur signal. The first spur mitigation unit comprises a moving average filter operable to generate the estimate of the spur signal. The AGC unit is further operable to reset the moving average filter of the first spur mitigation unit when the AGC unit modifies the gain associated with the VGA.