用区域分解法分析基于NRD波导结构的漏波天线  

The Domain Decomposition Method for a Leaky Wave Antenna Based on Image NRD Waveguide

作　　者：朱汉清[1] 刘淑静[1] 

机构地区：[1]淮阴师范学院物理系,淮阴223001

出　　处：《微波学报》2005年第1期35-38,共4页Journal of Microwaves

基　　金：江苏省教育厅自然科学基金资助项目(No. 04KJB140014)

摘　　要：提出了利用区域分解结合频域有限差分法,分析基于NRD波导结构的漏波天线。用区域分解法将原问题分解为若干子问题,大大缩小稀疏矩阵的规模,从而使得求解大尺寸问题成为可能。文中首先介绍了区域分解法在分析三维电磁问题中的实现,并计算了典型结构金属块的散射问题,用于验证算法的正确性;最后分析了一种基于NRD波导结构的漏波天线,并与实验值进行了比较,说明了方法的有效性。同时还给出了一种能够有效改善该天线性能的改进型漏波天线结构的分析结果。In this paper the Domain Decomposition Method (DDM) combined with the Finite Difference Frequency Domain (FDFD) is presented to analyze a leaky wave antenna based on image Nonradiative Dielectric (NRD) waveguide. The original large domain is divided into several sub-domains and the size of the sparse matrix created by FDFD is reduced greatly. Thus the large problem can be solved. The scattering characteristic of a conductive cube is calculated firstly. Good agreement between results calculated by DDM and the results from Taflove verifies the accuracy of DDM. Then a leaky wave antenna based on image NRD guide is computed to prove the efficiency of this method.

关 键 词：区域分解法 NRD波导结构 漏波天线 频域有限差分法 

分 类 号：TN820[电子电信—信息与通信工程]