Patent ID: 6975847

Claim:
A method for receiving signals transmitted in frequency bands of a receive frequency band of a cellular mobile communication system, the method comprising: obtaining a first signal frequency band containing the signals by adding a carrier frequency to the receive frequency band and by pre-filtering the receive frequency band; generating a frequency baseband containing the signals by adding an intermediate frequency to the first signal frequency band and by demodulating the first signal frequency band; performing post-filtering on the frequency baseband to obtain a second signal frequency band containing the signals, wherein post-filtering is performed by a post-filter having a cut-off frequency that is variable and that is matched to one or more of the carrier frequency and the intermediate frequency in order to separate the second signal frequency band from a neighboring frequency band; digitizing information in the second frequency band to obtain digitized information; fine-filtering the digitized information to obtain the signals in digital form; and amplifying signals of the second signal frequency band or bypassing amplifying the signals of the second signal frequency band based on a post-filter output level of the signals.