Patent ID: 8237870

Claim:
A receiver system capable of receiving RF signals on television channels of multiple bandwidths, the receiver system comprising: a tuner for mixing an RF signal with a mixer frequency selected for converting the RF signal into an IF signal; an analog IF filter for filtering out a fixed band signal from the IF signal, wherein the bandwidth of the analog IF filter is equal to the highest bandwidth amongst the multiple bandwidths; an analog to digital converter capable of converting the fixed band signal into a digital signal; a mixer module for converting the digital signal into a base band digital signal using a base band conversion frequency; one or more digital filters for filtering the base band digital signal for removing noise components; an automatic gain control module coupled to the one or more digital filters for controlling power level of the outputs of the one or more digital filters; and a controller connected to the automatic gain control module, the mixer module and the tuner; wherein the controller is configured to select the mixer frequency from a group of mixer frequencies based on a function of power of the output of the automatic gain control module, and to provide the mixer frequency to the tuner, and wherein the controller is further configured to select the base band conversion frequency from a group of base band conversion frequencies based on the selection of the mixer frequency, and to provide the base band conversion frequency to the mixer module.