Radio frequency tuner

Abstract

A RF tuner is described for handling RF signals in a broad frequency range and a broad power range while maintaining high linearity and tolerating high power blockers. A continuous feedback loop comprising a substantially linear LNA and a radio frequency RSSI can adjust the power of the RF signal on the RF side. On the IF side, a continuous feedback loop comprising a substantially linear, variable gain transconductor and a RSSI can adjust the power of the IF signal.

What is claimed is: 
     
         1 . A method for processing a RF signal in a RF receiver, comprising:
 receiving the RF signal at the RF receiver;   attenuating the RF signal in a component with an adjustable level of attenuation;   measuring the power of the signal; and   adjusting the level of attenuation in the component in an analog feedback loop based on the measured power.