Patent ID: 7634244
Filing Date: 2009-12-15
Classification: G01R,H01L,H03F,H03G,H04B,H04N

Abstract:
1. An amplifier assembly comprising: a first stage amplifier configured to amplify an input signal and to produce at its output a first amplified signal, wherein the first stage amplifier is a Variable Gain Amplifier (VGA), the VGA including a plurality of variable gain stages arranged in parallel and having a gain controlled in response to one or more gain control signals; a second stage amplifier coupled to the output of the first stage amplifier, the second stage amplifier being configured to amplify the amplified signal, and to produce at its output a second amplified signal; and an Automatic Gain Control (AGC) module configured to generate the one or more gain control signals according to a ramp function in response to a power level of the first amplified signal.