摘要
以TE10和TM11型波为例,研究了矩形波导管内的电磁场激发的管壁电流与电荷分布及如何对管内电磁波进行检测的问题.结果表明:TMmn波的管壁电流都在纵向,而TEmn波的管壁电流既有纵向分量也有横向分量;管壁上还存在局部电荷的堆积.因此,了解管内电磁波的性质,只需在壁上无电流处开缝,放入探针检测即可.
By example of TE10 and TM11 waves, the electric charges and currents on waveguide wall are due to electromagnetic filed excitation, and the problem of survey electromagnetic wave in rectangular waveguide are discussed. Resuits enunciate that the tube wall electric current of TMmn wave is at lengthways, the tube wall electric current of TErn wave is both at lengthways weight and at horizontal weight; there are pile of partial electric charges at the tube wall. In order to know the feature of the inside electromagnetic wave, it is only needed to open a slit on the tube wall, and to put the probe into it.
出处
《湖南师范大学自然科学学报》
EI
CAS
北大核心
2006年第4期35-38,共4页
Journal of Natural Science of Hunan Normal University
基金
国家自然科学基金资助项目(10375023)
关键词
波导管
电磁波
面电流
检测
waveguide
electromagnetic wave
surface current
measurement
