Research on blocking interference for digital radio station under UWB EMP

Abstract

In order to make certain of the blocking impact of the ultra-wideband electromagnetic pulse (UWB EMP) on a radio communication station, an EMP injection test was conducted to study the blocking interference of a digital radio station under a step pulse train and double exponential pulse train. Combined with waveform parameters such as the pulse repetition rate (PRR), the concept of influence time when the UWB EMP was irradiated on the equipment under test (EUT) was introduced, and the model was established. According to the experimental results, the blocking impact of the EUT under the UWB EMP depended on factors such as waveform, PRR, and amplitude. The relationship between the PRR and the sensitive bit error rate could be determined by the effect test. In the case of a low PRR, the sensitive voltage threshold of the EUT was irrelevant to the PRR, and the effect was the monopulse effect. When the PRR reached above the reciprocal of the influence time, the sensitive voltage threshold of the EUT decreased with the increase in the PRR, which conformed to the cumulative multiple pulse effects.

Plasma-discharge-integrated structure for microwave power limiter

“…These EMP threats are largely categorized as front-door coupling and back-door coupling. Front-door coupling is an EMP that is coupled through the RADAR or antenna of the communication equipment, and the sub-system of the antenna is designed to couple the power 18,19 . Back-door coupling refers to a malfunction or destruction of equipment when an EMP is coupled to a part of the cable or the device that connects to a communication network or equipment through a structural hole or gap [20][21][22] .…”