Patent ID: 8442171

Claim:
A frequency selective mismatch correcting multi-branch receiver comprising: an analog baseband signal portion coupled to receive a radio frequency (RF) signal, the analog baseband signal portion down-converts the RF signal and filters a plurality of analog multi-phase components of the down-converted RF signal; a plurality of analog-to-digital converters coupled to receive the plurality of analog multi-phase components and convert the plurality of multi-phase components into a plurality of digital multi-phase components; a Fourier transformer coupled to receive and transform the plurality of digital multi-phase components into a plurality of multi-phase component frequency coefficients; a filter coefficient computation unit coupled to receive the plurality of multi-phase component frequency coefficients, the filter coefficient computation unit derives a digital filter coefficient set for filtering a continuous stream of input samples from the plurality of analog-to-digital converters, the digital filter coefficient set being at least partially derived from ratios between mirror image pairs within the plurality of multiphase component frequency coefficients; a digital filter coupled to receive the continuous stream of input samples, the digital filter applies the digital filter coefficient set to the input samples; a test signal generator that generates at least one stimulus frequency tone; and a controller coupled to the test signal generator, the controller sequences through a plurality of stimulus frequencies using the test signal generator.