Patent ID: 8731505

Claim:
A tuner system for radio frequency (RF) reception comprising: a low noise amplifier for receiving an RF signal, the low noise amplifier being configured to output an amplified RF signal, the amplified RF signal including a plurality of bands; a band selection filter having a plurality of inductors and configured to select one of the plurality of bands; a complex RF filter configured to generate a complex RF signal from the selected one of the plurality of bands for removing negative frequencies of the selected one of the plurality of bands; a down-converter configured to: receive the complex RF signal, mix the complex RF signal with a first local oscillation frequency and a second local oscillation frequency, and output a baseband in-phase signal and a baseband quadrature signal; a baseband filter having at least two substantially equal lowpass frequency responses and configured to filter the baseband in-phase signal and the baseband quadrature signal; an up-converter configured to: receive the filtered baseband in-phase signal and the filtered baseband quadrature signal, frequency up-convert the filtered baseband in-phase signal to an intermediate frequency IF-I signal, and frequency up-convert the filtered quadrature signal to an intermediate frequency IF-Q signal; and a filter coupled to the up-converter configured to receive the frequency up-converted in-phase signal and the frequency up-converted quadrature signal and output an IF signal, wherein the first and second local oscillation frequencies are shifted by 90 degrees, and wherein the IF-I and IF-Q signals have an IF center frequency and an IF bandwidth.