A Variable Gain Amplifier (VGA) amplifies an input signal according to a gain, to produce an amplified signal. A detector module detects a power indicative of a power of the amplified signal. A comparator module compares the detected power to a high threshold, a low threshold and a target threshold intermediate...http://www.google.com/patents/US20040189382?utm_source=gb-gplus-sharePatent US20040189382 - Gain control methods and systems in an amplifier assembly
