Enhanced automatic gain control

摘要

An automatic gain control circuit (10) that maximizes front-end signal attenuation is disclosed. The automatic gain control circuit (10) comprises a keyed automatic gain control circuit (50) and an intermodulation detector (12). The intermodulation detector (12) detects signal interference and generates an intermodulation detection flag (19). The keyed automatic gain control circuit (50) uses the intermodulation detection flag (19) to control front-end signal attenuation. A method for maximizing front-end signal attenuation for the automatic gain control circuit (10) is also disclosed.