Design and implementation of automatic gain control loops

Based on the analysis of automatic gain control (AGC) loops, we propose a simple and applicable method for the design and implementation of AGC loops. This proposed method offers the designer an effortless way to specify the performance of AGC loops, such as the time constant, as result reducing the huge task of testing before construction. The theoretical designing method is validated by experiment results with close agreement and this method is shown to be very efficient.