Automatic gain control (AGC) for multichannel/wideband communications system

摘要

Automatic Gain Control (AGC) system for multi-channel signals attenuates an incoming multi-channel signal by providing a gain. The system further adjusts each individual channel, of the multi-channel signal, by supplying a second gain if needed. The AGC system is designed to ensure a received signal power is at an optimal level for analog to digital conversion or any other form of signal processing. The system also enables elimination of mid-packet gain adjustments.

主权项

1. A multi-channel receiver comprising:
an outer programmable gain controller controlling gain of a multi-channel signal prior to said multi-channel signal being split into a plurality of individual channels; and a plurality of inner programmable gain controllers, each inner gain controller controlling gain of one of said individual channels, wherein the outer gain controller receives feedback identifying if a packet is being processed on any of said individual channels and controls the gain of the multi-channel signal at a fixed nominal gain if a packet is being processed on one of said individual channels.