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为方便地计算抛物面冲击脉冲辐射天线的辐射电场,根据由张量法得到的任意的线天线电场计算公式,利用镜像法推导得到了冲击脉冲辐射天线辐射电场的时域解析表达式;搭建了超宽带电磁脉冲实验系统,由横电磁波喇叭天线测试场设备测试抛物反射面超宽带辐射天线产生的辐射场;应用解析表达式计算了该实验系统的时域辐射场,并与实验测试结果进行了比较。结果表明解析计算得到的辐射场波形与测试结果能够较好地符合,峰峰值相差<1V,上升时间相差≤5ps,说明了解析计算的正确性。
In order to conveniently calculate the radiated electric field of the parabolic impact pulsed antenna, the analytical expression of the radiated electric field of the impulse pulsed antenna is obtained by the image method based on the arbitrary formula of the electric field calculated by the tensor method. The ultra-wideband electromagnetic The pulse experiment system was used to test the radiation field generated by the parabolic reflector UWB antenna by transverse electromagnetic horn antenna test field. The time domain radiation field of the experimental system was calculated by analytical expression and compared with the experimental test results. The results show that the calculated radiation field waveform can be in good agreement with the test results. The difference between peak and peak values is less than 1V, and the difference of rise time is less than or equal to 5ps, which shows the correctness of analytical calculation.