Simulation Study on the Influence of the Damage of RF Front-end Limiter to the Performance of Satellite Communication System

摘要

Satellite communication is an important part of the information communication network. Strong electromagnetic impulse may enter the RF reception channel of the satellite communication receiving system of the same frequency band, and bring damage to sensitive components such as the limiter, low-noise high frequency amplifier, thereby causing loss of the function of the satellite communication system. In this paper a behavior-level simulation model of typical satellite communication equipment is established, and an analysis on the influence to the communication performance after the limiter is damaged by strong electromagnetic impulse is conducted. The simulation results show that, apart from the variation of the noise factor at the RF front-end of the satellite communication receiver caused by insertion loss variation of the limiter, the bit error rate is also influenced by the gain control method and modulation method.