圆台–线栅型水平极化电磁脉冲模拟器的仿真分析
Radiation Charateristics Analysis of Frustum-Wire Grid Horizontal Polarizad Antenna

以双锥–线栅型水平极化天线为原型，使用不同大小的圆柱体替换双锥的锥尖，设计出圆台–线栅型水平极化天线，并利用CST MWS电磁仿真软件计算了当激励源为双指数波时的两种天线结构的输出波形。将两种天线模型的输出波形分别与高空核电磁脉冲标准波形进行对比，结果显示：圆台–线栅型水平极化天线模型的仿真结果在主要参数上更贴近高空核电磁脉冲标准波形，其中，输出波形的场强峰值提升了2.47%，上升沿(脉冲从峰值的10%到峰值的90%的时间宽度)误差由20.40%减小为0.04%，半高宽误差由8.26%减小为1.46%。
A frustum-wire grid horizontally polarized antenna was designed by replacing the coning angle with a cylinder of different length on the basis of a biconical-wire grid horizontally polarized antenna. When the excitation source waveform is double exponential wave, the output waveforms of the two types of antennas are calculated by simulation software of Computer Simulation Technology Microwave Studio (CST MWS). Compared the output electric field waveform of the two structures with the high-altitude nuclear electromagnetic pulse (HEMP) standard waveform, such renovation makes the peak of electric field rising 2.47%, the error in the rise time (the time width of the pulse from 10 percent to 90 percent of the peak) declining from 20.40% to 0.04%, and the error in the Full Width Half Maximum (FWHM) decreasing from 8.26% to 1.46%, which means closer to HEMP standard waveform in terms of main parameters.