Patent ID: 7302241

Claim:
A wireless communication unit incorporating a receiver, the receiver comprising: radio frequency circuitry for receiving a radio frequency signal and converting said radio frequency signal to a low frequency signal; a signal level adjustment circuit for receiving said low frequency signal; an analogue to digital converter, operably coupled to said signal level adjustment circuit for receiving an adjusted low frequency signal and providing a digital received signal; and a signal processor operably coupled to the analogue to digital converter for processing said digital received signal; wherein said signal level adjustment circuit comprises a low frequency amplifier having a gain, a dynamic compressor function, operably coupled to said low frequency amplifier for limiting a signal output from said low frequency amplifier, and a fixed attenuator operably coupled to said dynamic compressor function to attenuate at a fixed attenuation level a received signal output from said dynamic compressor function to below a clip point threshold of said analogue to digital converter, wherein the gain of the low frequency amplifier is arranged to be dependent upon a clip point of said dynamic compressor function subtracted by a clip point of said analogue to digital converter.