摘要
采用模式匹配法对填充电介质的圆形槽波导进行了分析 .根据满足边界条件的一系列电磁场方程 ,推导出填充电介质的圆形槽波导的特征方程 .在改变相应的一些条件后 ,该特征方程分别被简化为圆形槽波导的特征方程和圆波导的特征方程 .在特征方程的基础上 ,计算出几种模式的ω β曲线 ,得到在加载不同介质后模式截止频率的变化 :随着介电常数的变大 ,模式截止频率有变小的趋势 .
A circular groove guide loaded with dielectric was analyzed using the mode matching method. Based on a series of simultaneous electromagnetic field equations contented with the boundary conditions, the characteristic equation of the circular groove guide loaded with dielectric is derived. After changing some conditions, the characteristic equation is degenerated into characteristic equation of circular groove guide and circular guide, respectively. Based on the characteristic equation the ω-β curve of several modes are calculated. From these curves, the changes of cut-off frequency of modes after loaded with different dielectrics can be found. For instance, while permittivity increases the cut-off frequency of modes tend to decrease. All the results establish some theory base for further studying the applications of circular groove guide loaded with dielectric.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第2期141-144,共4页
Journal of Southeast University：Natural Science Edition
基金
国家自然科学基金资助项目 ( 2 97760 12 )
