Modifying an estimated gain profile of an amplifier

摘要

The estimated gain profile of an amplifier can be modified during operation of the amplifier utilizing detected values of the amplification level of signals produced by the amplifier. The amplification levels can be detected at a location that is remote from the amplifier. New expected amplification levels can be determined for corresponding control signal values in the estimated gain profile. Digital filtering such as Kalman filtering can be used to determine the new expected amplification levels. The estimated gain profile can be modified with the new expected amplification levels.

主权项

1. A process of modifying an estimated gain profile of an electronic variable gain amplifier (VGA), said process comprising:
obtaining said estimated gain profile of said VGA stored in an electronic memory device, said estimated gain profile comprising data stored in said memory device representing a plurality of different expected amplification levels each mapped to a different one of a plurality of different control signal values; providing one of said control signal values of said estimated gain profile to said VGA; said VGA outputting in response to said one of said control signal values provided to said VGA an output signal; receiving a detected amplification level of said output signal; and modifying said estimated gain profile in said memory device utilizing said detected amplification level and one of said expected amplification levels mapped in said estimated gain profile to said one of said control signal values provided to said VGA.