Patent ID: 8582699

Claim:
A process of controlling an operating range of an analog to digital converter in a receiver comprising: A. receiving a radio frequency signal at an antenna; B. amplifying the radio frequency signal received at the antenna in a radio frequency amplifier; C. mixing a signal from a local oscillator with the amplified radio frequency signal to produce an intermediate frequency signal; D. filtering the intermediate frequency signal; E. amplifying the filtered intermediate frequency signal in an intermediate frequency amplifier; F. converting the amplified filtered intermediate frequency signal to digital samples in an analog to digital converter; and G. in an automatic gain control circuit: i. estimating a peak-to-average ratio from the digital samples; ii. determining a peak value based on the peak-to-average ratio; and iii. maintaining magnitude of the amplified filtered intermediate frequency signal by providing the peak value to the radio frequency amplifier and the intermediate frequency amplifier.