Patent ID: 8817913

Claim:
A digital filter-decimator-tuner configured to receive a complex digitally sampled signal input x k and output a complex digital USB signal yu k and a complex digital LSB signal yl k , comprises: an upper sideband (USB) processing path coupled to receive x k and output yu k based on a tuned USB complex signal, the USB processing path including a first USB finite impulse response (FIR) filter configured to receive the x k signal and output a filtered USB signal, a decimator configured to decimate the filtered USB signal and output a filtered decimated complex USB signal, a USB tuner configured to receive the filtered decimated complex USB signal and a USB tuning signal and to output the tuned USB complex signal; and a lower sideband (LSB) processing path coupled to receive x k and output yl k based on a tuned LSB complex signal the LSB processing path including a first LSB FIR filter configured to receive the x k signal and output a filtered LSB signal, a decimator configured to decimate the filtered LSB signal and output a filtered decimated complex LSB signal, a LSB tuner configured to receive the filtered decimated complex LSB signal and a LSB tuning signal and to output the tuned LSB complex signal.