Radio frequency filtering includes receiving a signal and detecting a
change in the direct current (DC) offset of the signal or a change in a
component that affects the DC offset of the signal. The filtering also
includes setting a cut-off frequency of a high-pass filter to a first
frequency value in response to the detected change and filtering the
signal using the high-pass filter with the cutoff frequency set to the
first frequency value. The filtering further includes adjusting the
cutoff frequency of the high-pass filter from the first frequency value
to a second frequency value while filtering the signal using the
high-pass filter where the second frequency value is less than the first
frequency value.