电磁波在等离子体同轴波导中的传播特性研究  

Assimilate and Attenuation of Microwave in Plasma Coaxial Waveguide

作　　者：张亚民[1] 

机构地区：[1]北京化工大学北方学院,河北廊坊065201

出　　处：《材料开发与应用》2010年第2期61-65,共5页Development and Application of Materials

摘　　要：研究了均匀非磁化等离子体填充的同轴线波导,考察了电磁波在其中的传播特性。通过对边界条件的分析讨论,得到了波导中各场分量的解析表达式和电磁波在波导中传播的特征方程,并结合等离子体特性得到了电磁波传播过程中的衰减常数与相位常数。最后采用了MATLAB编程计算软件对其色散关系特性进行分析计算和绘图,在一定的条件下,分别就衰减常数和相位常数与等离子体的各种参数,如振荡频率、碰撞频率及入射电磁波频率的关系进行了深入细致的讨论,并分析了电磁波在等离子体同轴波导中传播时,不同波导尺寸对衰减的影响和不同模式与衰减的关系。The purpose of this paper is to study the microwave which passed in the plasma coaxial wavegnide. Based on the analysis of boundary condition, the field function, character function, attenuation constant and some others meaningful are gained. The Matlab calculate soft was used to visualize the property of coaxial waveguide by plot. In definite condition, the relation of attenuation and the parameter of plasma, such as plasma frequency, collision frequency, incidence frequency of electromagnetic wave and dimension of waveguide were discussed comprehensively.

关 键 词：等离子体 入射波频率 碰撞频率 等离子体频率 衰减常数 波导尺寸 

分 类 号：TN814[电子电信—信息与通信工程]