A radio-frequency receiver circuitry includes a down-converter circuitry,
an analog-to-digital converter circuitry, and a DC offset reduction
circuitry. The down-converter circuitry accepts a received
radio-frequency signal and processes the radio-frequency signal to
provide an in-phase down-converted signal and a quadrature down-converted
signal to the analog-to-digital converter circuitry. The
analog-to-digital converter circuitry converts the in-phase and
quadrature down-converted signals to an in-phase digital output signal
and a quadrature digital output signal, respectively. The DC offset
reduction circuitry couples to the analog-to-digital converter circuitry,
and tends to reduce a DC offset transmitted to the in-phase and
quadrature digital output signals.