Patent ID: 6782062
Filing Date: 2004-08-24
Classification: H03F,H04B,H04L,H04W,Y02D

Abstract:
An apparatus for a radio frequency receiver, comprising:a first buffer configured to buffer a signal, the buffer having a bias level and being adapted for use in said radio frequency receiver; a detector configured to receive a signal strength corresponding to an input signal of the receiver and to produce according thereto a bias control signal; a bias generator configured to produce the bias level according to the bias control signal, such that the bias level generally increases as the signal strength increases; a local oscillator and second buffer, having a second bias level, configured to generate an intermediate frequency signal such that an output is generated according to the buffered signal and the intermediate frequency signal; a second bias generator configured to receive the bias control signal and generate according thereto the second bias level; and a bias feedback supplying a bias feedback signal proportional to the bias level, wherein the first bias level is at least partially dependent on the bias feedback signal.