微波脉冲窄缝耦合的数值模拟方法

Numerical Simulation Method of Microwave Pulse Couplings into Narrow Slots

本文应用一种近似方法，结合时域有限差分法，模拟了微波脉冲与腔体上有限厚度孔缝的线性耦合过程，给出了耦合场对入射波载频、入射场偏振方向、腔体壁电导率以及孔缝尺寸的依赖关系，得出了微波脉冲与孔缝耦合的共振效应和增强效应等规律。

We use the finite-difference time-domain(FDTD) algorithm to simulate microwave pulse couplings into narrow slots which have depths much narrower than one FDTD cell.We present the dependence of the microwave pulse coupling on the carrier frequency of incident wave, polarization direction, cavity wall conductivity and narrow slot sizes. Simulation results show that there are resonant effect and enhancement effect occured in the processes of microwave pulse couplings into narrow slots.