A band edge amplitude reduction system changes the filtering
characteristics of a receiver based on the amplitude of signal(s)
adjacent to an edge of the operating band of the receiver and/or of
signals not under the power control of the receiver. For example, the
receiver measures the power level over a bandwidth at the band edges of
the operating band of the receiver. If the signals adjacent to the
operating band are strong enough relative to the signal power within the
operating band, overload protection circuitry changes the filtering
characteristics of the receiver to improve the attenuation of the
signal(s) from the adjacent band(s). In certain embodiments, the overload
protection circuitry switches in filter(s) with a narrower bandwidth to
attenuate the signal(s) from adjacent band(s) at the edge(s) of the
operating band of the receiver, thereby preventing interference with or
the overload of the receiver by signals from outside the operating band
and/or not under the power control of the receiver.