Patent ID: 7852251

Claim:
A digital radio system, comprising: a mixer operable to generate an intermediate frequency signal based at least in part upon a radio frequency signal and a local oscillator signal, wherein the intermediate frequency signal comprises a signal of interest having a particular bandwidth; an analog-to-digital converter communicatively coupled to the mixer and operable to generate a digital signal by quantizing the intermediate frequency signal using a sampling frequency; and a digital signal processing circuit communicatively coupled to the analog-to-digital converter and operable to convert the digital signal to a baseband frequency by multiplying the digital signal using (a) an in-phase component, I, of [1, −1, −1, and 1] and quadrature component, Q, of [1, 1, −1, and −1], or (b) an in-phase component, I, of [1, 0, −1, and 0] and quadrature component, Q, of [0, 1, 0, and −1].