The performance of combined feedforward AGC and phase-locked AFC in a single sideband mobile radio receiver

The paper describes the results of a simulation of a coupled phase-locked AFC/feedforward AGC system with a two tone fading input. The theoretical predictions agree closely with those obtained under laboratory conditions, and show that considerable care should be exercised in the selection of the phase-locked loop bandwidth, normalised to twice maximum Doppler (¿n/2¿d). Failure to do so can result in nonoptimum feedforward AGC performance.