The Effect of ESD EMP Test on Wireless Antenna and Protection Network Design

Abstract

According to IEC61000-4-2, the influence of ESD EMP on the wireless antenna is studied by the injection experiments and radiation experiments in this paper. The results of experiments show that the ESD EMP has significant influence on the wireless antenna, and various kinds of failures such as breakup, restart may be occurred. In order to solve this problem, a wireless protection program has been designed, in which the TVS diode was used as the first lever for protection and the π-type high pass filtering network as the second lever. This program not only has the traditional function of ESD protection, which can avoid the high voltage damage to the internal circuit, but also achieve the purpose of load matching, ensuring the signal source not distortion.