Abstract: In order to study the impact of the the panel gap on quiet zone characteristics in the large compact antenna test range (CATR) systems, spatial domain method is adopted firstly, and an appropriate means of joining together is chosen according to the spatial simulation results, in this way, time and angular domain results are simulated then. Time and angular domain simulation can separate interference wave from main wave, comparing the interference wave of different points in the time and angular domain the reasonable range of ideal quiet zone can be obtained. This kind of analysis is efficient for analyzing the impact of the panel gap on quiet zone characteristics in the large CATR.

Key words: the large compact antenna test range, gap, spatial domain, time domain