Finite Fss Transmission Characteristics Of The Theoretical Analysis And Research

The study of frequency selective surface (FSS) has been carried out for hundreds of years. Many researchers have paid more attention to the realization of high performance FSS. Several special models have been analyzed and calculated. But there are short of the experiences of analyzing the reflection coefficient and the transmission coefficient of the most general models. And nearly all the researches are limited to the FSS which made of single layer, and without sandwiched dielectric.In practical applications, FSS are finite and dielectric sandwiched. The paper highlights the method of moment (MOM) which is based on the multilayered media Green's functions. To improve efficiency, this thesis uses the multilevel UV method, meanwhile Lagrange interpolation was used to accelerate the calculation of spatial multilayered media Green's functions. When the electric size of objects becomes larger, the speed and memory of computer can not satisfy the needing. This paper develops the parallel Multi-UV method to analyze the electromagnetic characteristics of electrical large FSS. The calculating time and memory consumption comparison chart can indicate the method has high computational efficiency.Finally, the method of equivalent planar to compute the transmission and reflection coefficient of finite FSS structures is used, and gives a number of experiment data, including single-and multi-screen FSS structure with single-layer or multi-layer medium. The results shows the structure have good performance in frequency selectivity and basically consistent with the software simulation results.