摘要
根据波动方程和边界条件，利用分离变量法导出扇面波导中ＴＭ模场分量通用表达式，计算了具有不同的张角和内、外半径比的扇面波导中ＴＭ模的截止波数，并列出数表，给出截止波长的精确的和近似的表达式．
The general electromagnetic fields of the transverse magnetic mode(TM) in a sectoral waveguide are derived from the wave equation and the appropriate boundary conditions on the walls by using the separation variable method. The cutoff wave numbers of the TM modes in a waveguide with the various subtended angles and the ratio between the outer and inner radii are computed and tabulated. then the cutoff wavelength expressions, exact and approximately formulas are given.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
1995年第1期41-45,共5页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金
关键词
波导
横模
截止频率
电磁场
扇面波导
waveguides
transverse mode
cut-off frequency
electromagnetic fields
sectoral waveguide
transverse magnetic mode
