Patent ID: 8509725

Claim:
A processing device for processing an analog complex input signal generated by downconversion of an aggregated-spectrum radio-frequency signal in a radio-receiver, wherein the complex input signal comprises a plurality of sub bands scattered across a total frequency band of the complex input signal, wherein the processing device comprises: a plurality of processing paths, wherein each processing path is configured to process an associated sub band and comprises: a complex mixer configured to frequency translate the complex input signal, and thereby the associated sub band, based on a local oscillator signal associated with the complex mixer; and an analog channel-selection filter operatively connected to an output port of the complex mixer and configured to filter an output signal of the complex mixer and pass the frequency translated associated sub band; an oscillator unit configured to provide the local oscillator signal associated with the complex mixer of each processing path; and a control unit configured to receive control data indicating frequency locations of the sub bands and, for each processing path, control the local oscillator signal of the complex mixer of that processing path based on the frequency location of the associated sub band and the passband of the analog channel-selection filter of the processing path, such that the frequency-translated associated sub band appears within a passband of the analog channel-selection filter of the processing path.