Patent ID: 6351529
Filing Date: 2002-02-26
Classification: H03G,H04M

Abstract:
An automatic gain control (â€œAGCâ€ ) for providing automatic gain control of a signal comprising:a power estimator for receiving the signal and providing an estimated power of the signal, wherein the estimated power forms an index by a function comprising: q&af;(t)=(TABLE&it;â€ƒ&it;_&it;â€ƒ&it;SIZE-1THSAT-THQUIET-1)&it;(Pin&af;(t)-THQUIET)â€ƒwhere TABLE_SIZE comprises a number of entries in the gain, THSAT and THQUIET comprise threshold levels, and Pin comprises an input power level; a gain lookup table comprising a plurality of gain values, the gain lookup table capable of providing a gain level in accordance with the index; and a multiplier in communication with said gain lookup table for multiplying the signal with the gain level to provide an output signal with automatic gain control.