典型射频系统电磁脉冲弹威胁评估与级联限幅防护研究  

Threat Assessment and Cascade Limiting Protection of Electromagnetic Pulse Projectiles in Typical RF Systems

作　　者：王东 余道杰[1] 贺凯 柴梦娟 周长林[1] WANG Dong;YU Daojie;HE Kai;CHAI Mengjuan;ZHOU Changlin(Information Engineering University,Zhengzhou 450001,China)

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2023年第1期51-56,共6页Journal of Information Engineering University

基　　金：国家自然科学基金资助项目(61871405)。

摘　　要：为研究电磁脉冲弹的攻击辐射范围和对典型射频系统电子设备的耦合规律,通过仿真计算出电磁脉冲弹的覆盖面积、目标区域功率密度分布和射频系统天线接收功率;分级研究不同强度电磁脉冲对射频系统电子设备的毁伤程度;针对典型射频系统前端的强电磁脉冲防护,仿真设计了一款两级级联对管PIN限幅器。理论计算与仿真结果表明,电磁脉冲弹对典型射频系统的毁伤效应程度与爆炸高度、入射倾角和波束角度有关;在能量选择抑制器和射频抑制器防护的基础上,设计的PIN限幅器在连续波条件下平顶泄漏功率为0.38 W,低于设备中低噪声放大器(LNA)的毁伤功率阈值,基本满足射频系统对电磁脉冲弹的防护要求。To study the radiation range of electromagnetic pulse bomb and its coupling law to typical radio frequency(RF) system electronic equipment,the coverage area,the power density in target area and the received power of electronic equipment antenna are calculated.A two-stage PIN-diode limiter is designed and simulated to protect the RF front end from strong electromagnetic pulses.The theoretical calculation and simulation results show that the effect of electromagnetic pulse bombs is related to the explosion height,incident inclination angle and beam angle.Based on the energy selective surface and the protection of RF suppressor,the flat-top leakage power of PIN-diode limiter is lower than the damage power threshold of low noise amplifier(LNA) under continuous wave condition,and meets the protection requirements for electromagnetic pulse.

关 键 词：电磁脉冲弹 典型射频系统 辐照区域 毁伤机理 PIN限幅器 

分 类 号：TN97[电子电信—信号与信息处理]