Patent ID: 8718190

Claim:
A receiver capable of simultaneously receiving discontinuous frequency band signal components of an input signal, comprising: a first frequency synthesizer, for generating an in-phase local oscillation differential signal and a quadrature-phase local oscillation differential signal; and a down-conversion circuit, coupled to the first frequency synthesizer, for performing frequency down-conversion upon the input signal having discontinuous frequency band signal components comprising a first frequency band signal and a second frequency band signal to generate a first down-converted signal by using the in-phase local oscillation differential signal and the quadrature-phase local oscillation differential signal, and performing the frequency down-conversion upon the input signal to generate a second down-converted signal by using the in-phase local and quadrature-phase oscillation differential signals that have been phase-swapped, wherein the first frequency band signal has a first center frequency and wherein the second frequency band signal has a second center frequency separated from the first center frequency by an offset corresponding to a bandwidth of the first and second frequency bands multiplied by an integer value greater than one, the respective bandwidths of the first and second frequency bands being equal, and wherein a local oscillation frequency of the first frequency synthesizer is equal to a sum of the first center frequency and half of the offset; and a processing circuit coupled to the down-conversion circuit, the processing circuit comprising a second frequency synthesizer, wherein a difference between a local oscillation frequency of the second frequency synthesizer and the local oscillation frequency of the first frequency synthesizer is equal to the first center frequency.