Design of Ultra-wideband Large Dynamic Range ALC System

This paper introduces the function and working principle of automatic level control (ALC) technology, deeply analyses the key techniques in the design of ALC circuit, and designs an ALC system applied to ultra-wideband large dynamic range signal source. Power flatness is ± 2dB in the range of 10MHz∼24GHz, and the tuning range is −30dBm ∼+10dBm.