Patent ID: 6959082

Claim:
An automatic gain control (“AGC”) for providing automatic gain control with an adaptive gain level comprising: an automatic gain control circuit to provide an automatic gain controlled output signal; an output power block for providing output power of the automatic gain controlled output signal; an adder for determining an error signal in accordance with the output power of the automatic gain controlled output signal; and a gain lookup table for storing gain values, wherein (i) the gain table is adapted in accordance with the error signal; and (ii) the gain table is capable of providing the gain values in accordance with an index formed by a function comprising: q ⁡ ( t ) = ( TABLE_SIZE - 1 THSAT - THQUIET - 1 ) ⁢ ( P in ⁡ ( t ) - THQUIET ) wherein TABLE — SIZE comprises a number of entries in the gain; THSAT and THQUIET comprise threshold levels, and P in (t) comprises an input power level.