【摘要】 利用FDTD方法研究了无加载、均匀加载及非均匀加载偶极天线的脉冲散射特性,分析了偶极天线馈电端开路、短路及端接阻抗等3种情况下散射特性的变化.给出了高斯脉冲场垂直入射和斜入射时的单站脉冲散射场时域波形、频谱特性及能量空间分布方向图.偶极天线的脉冲散射特性的研究对研制低散射天线具有重要参考价值.更多还原

【Abstract】 The transient scattering properties of the unloaded,uniform loaded and non-uniform loaded dipole antennas are investigated.Three cases concerning the feeding of the antennas are considered respectively,that is,open circuit,short circuit and terminated with load.The monostatic scattering pulse waveforms,frequency spectrum,and radiation patterns defined by energy of the antennas are given,when Gaussian pulse is incident in vertical and inclined directions respectively.The transient scattering properties are valuable to the design of low scattering antennas.更多还原