基于阻抗失配的快沿方波脉冲防护研究  

Research on the Fast Rising Edge of Square Wave Pulse Protection Based on Impedance Mismatching

作　　者：孟兆祥 毕军建 安明霞 郑鹏宇 宋培姣 

机构地区：[1]陆军工程大学静电与电磁防护研究所,石家庄050003 [2]中国人民解放军第5721工厂,石家庄050208

出　　处：《微波学报》2018年第1期25-28,35,共5页Journal of Microwaves

摘　　要：针对快沿方波电磁脉冲的防护问题,分析了不同半导体防护器件的阻抗变化对电磁脉冲的响应时间、端口传输功率的影响,得出了阻抗失配具有良好的方波电磁脉冲抑制作用和响应速度快的特性;为提高功率容量,采用了微带滤波器,通过1/4波长原理,仿真、设计、制作了1/4波长微带带通滤波器,频率范围3.2~6.2 GHz,插入损耗≤1.8 d B,阻抗为50Ω,在1 GHz处的带外抑制为30 d B;利用高频噪声发生器（INS-4040）产生的快沿方波脉冲对其进行测试,结果表明此微带带通滤波器对快沿方波脉冲具有很好的抑制作用,同时具有亚纳秒的响应时间。For the fast rising edge square wave electromagnetic pulse protection problem, by analyzing the effect of different semiconductor protection devices＇ impedance variation on the response time for the electromagnetic pulse and port transmission power, this paper draws a conclusion that impedance mismatch has the character of good suppression of square wave electromagnetic pulse and fast response speed. In order to improve the power capacity, a micro-strip filter is used in this paper. By the principle of wavelength 1/4, the 1/4 wavelength microstrip band-pass filter is designed and fabricated. The passband is 3.2-6.2 GHz, insertion loss is less than 1.8 dB, the impedance is matched to 50 Ω, the out of band rejection is 30 dB at 1 GHz. The fast edge in this paper is generated by the high frequency square wave pulse noise generator （ INS-4040）, the mierostrip bandpass filter has a good suppressing effect for the fast rising edge square wave, also has a response time of subnanosecond.

关 键 词：快沿方波脉冲 开关器件 传输线 阻抗匹配 电磁脉冲防护 

分 类 号：TN03[电子电信—物理电子学]