Patent ID: 6996383
Filing Date: 2006-02-07
Classification: H03G,H04B,H04W

Abstract:
1. An automatic gain control warm-up method in a receiver having a low noise amplifier (LNA) and a step attenuator, comprising the steps of: a) generating a first amplitude recovered signal from an intercepted signal by setting the step attenuator to an attenuation state and setting the LNA to a minimum gain; b) switching the receiver to a track mode when a measured value of the first amplitude recovered signal is above an AGC threshold; c) generating a second amplitude recovered signal by setting the LNA to a maximum gain when the measured value of the first amplitude recovered signal is below the AGC threshold; d) switching the receiver to the track mode when the measured value of the second amplitude recovered signal is above the AGC threshold; and e) generating a third amplitude recovered signal by setting the step attenuator to a pass-through state and the LNA to the maximum gain when the measured value of the second amplitude recovered signal is below the AGC threshold.