采用辅助差分方程时域有限差分(ADE-FDTD)算法对一种具有快速动态重构能力的等离子体圆形反射器天线(PRRA)的归一化辐射方向图及反射系数进行了数值计算.计算结果表明:等离子体圆形反射器天线能够在微秒量级内完成不同辐射波束形状和发射方向的切换,实现天线辐射特性的快速动态重构且具有较宽的工作频带.
The radiation characteristic of a round reflector plasma antenna (PRRA) are calculated by finite-difference time-domain (ADE-FDTD) method.The study result shows that the beam shape and beam direction of the PRRA can be changed within microseconds, and the radiation characeristic of antenna can be rapidly reconstructed with wider bandwidth than others.