Wu-King 加载偶极天线的FDTD分析

Wu-King 加载偶极天线的FDTD分析

内容简介：用时域有限差分法分析了高斯脉冲激励的Wu-King加载偶极天线的特性.给出了天线周围空间瞬态场的变化情况及天线上的电流波形,这种形象化的结果为加载脉冲辐射天线的设计和改进提供了直观的物理依据.通过时域远近场变换,得到了天线脉冲辐射远场.计算并给出了描述脉冲辐射器性能的时域参数:保真度和能量方向图.

Abstract：The cylindrical dipole antenna with a lumped resistive loading is considered as a radiator of ultra-wideband short-pulses. Specifically, the distribution and value of the resistance along the dipole antenna are proposed by Wu and King (Wu-King profile). This antenna is analyzed by using the finite-difference time-domain (FDTD) method. The electromagnetic field in the space surrounding the antenna is determined as a function of time, which can be used to calculate the current waveforms on the antenna, time-varying field in the far zone, and some important time domain parameters for describing the performance of the antenna. Graphical displays of these results are used to provide physical insight into the transient radiation processes of this antenna.

作者：黄冶, 尹成友,

关键词：时域有限差分法 (FDTD), 超宽带短脉冲, Wu-King 加载, 时域参数,