高功率超宽谱辐射源实验研究

摘要

对高功率超宽谱辐射源的参数进行了理论分析设计,对高压电源、脉冲产生、阻抗变换及传输线、天线等各部分的具体参数进行了分解匹配.根据理论计算结果,设计了一套高功率超宽谱辐射装置并进行了实验研究,对输出功率、辐射效率等进行了调试,在2.7Ω负载上获得脉冲输出功率超过30 GW、脉冲宽度1.6 ns,通过超宽谱Cassegrain双反射面天线辐射,等效辐射峰值功率超过2×1012W,辐射因子超过8 MV,H面与E面3 dB宽度分别为2.35°和2.27°.%The paper designs a high power ultra-wideband(UWB) radiation source, which consists of high voltage pulsed power supply, pulse forming line, impedance transformation unit, transmission line, etc. The parameters of all the parts are analyzed and matched. And an experimental set is built accordingly. An over 30 GW pulse with duration of 1. 6 ns can be obtained on the 2.7 Ω pulse forming line. Through Cassegrain dual reflector antenna, the effective isotropic radiated power exceeds 2×1012 W, the radiated field factor exceeds 8 MV, and the 3 dB widths of power of E- and H-plane of radiation are 2. 35° and 2. 27°, respectively.