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采用时域有限差分算法分析了单极天线在脉冲信号的激励下的电磁场的时域特性 ,并借助付里叶变换获得了天线的频域特性 .
The finite-difference time-domain method was used to analyze the time-domain characteristics of the monopole antenna under the excitation of the pulse signal. The frequency domain properties of the antenna were obtained by Fourier transform.