Patent ID: 7266361

Claim:
An electric circuit for use as a radio receiver or as part of a radio receiver, the electric circuit comprising: amplification means for receiving an analogue input signal; analogue frequency mixer means for receiving an output of the amplification means, the mixer means comprising a plurality of mixers being switchable into and out of use in order to configure the mixer means to down-convert a wanted component of the amplified input signal to one of at least two intermediate frequency bands, at least one of the mixers being reused for different configurations of the frequency mixer means; analogue filter means for receiving an output of the frequency mixer means, the filter means being switchable between at least two filter configurations; and control means coupled to the frequency mixer means and to the filter means and capable of selecting a frequency mixer means operating mode and filter configuration appropriate to the input signal to provide at least two of a low-IF, zero-IF, and superheterodyne architecture.