摘要
由于电磁波传播空间的媒质不是理想介质,所以电磁波的传播过程总是伴随着能量的损耗,沿波导传输的电磁波也总是存在一定的电磁能量损耗。本文以无源空间波动方程为基础,推导出圆柱形波导中波的电场和磁场的场分量,以及波的击穿功率和衰减常数,由此得出减少圆柱形波导中电磁能量的传输损耗和提高传输效率的方法。
The space of electromagnetic wave propagation medium is not the ideal medium, so the dissemination process of electromagnetic wave always has the loss of energy. Transmission of electromagnetic waves along the wavegnide is no exception, there is always a certain degree of electromagnetic energy loss. Based on wave equation of passive space, the corresponding field component can be obtained. Then we can obtain the breakdown power and attenuation constant of wave. Finally, we get the approaches to reduce the energy wastage in cylindrical wavegnides and to increase the efficiency of transmission.
出处
《榆林学院学报》
2009年第6期37-40,共4页
Journal of Yulin University
关键词
圆柱形
波导
亥姆霍兹
击穿功率
衰减常数
传输损耗
waveguide
electromagnetic waves
Maxwell equations
efficiency
attenuation constant
