摘要
偏轴传输线中的TEM波的分布规律,可通过复数坐标系z上的分式线性变换,首先由静态场在相同边界条件下得出的电场的解,再乘以波动因子e-jβκ得到电场的分布,然后根据由麦克斯韦方程所联系的电场与磁场的关系,得到磁场的分布,从而给出偏轴传输线中TEM波的电磁场分布规律,通过数学软件MATLA绘制出TEM波在其横截面上的结构图,计算出其特性阻抗。研究结论解决了偏心传输线的计算问题,并为一般的同轴线的加工精度提供了理论依据。
The distribution regularity of TEM wave in the off-axis transmission line,can be obtained by plural coordinate system＇s linear fractional transformation of z axis.First,the solution of the electric field is acquired by static field in the same boundary conditions,then the result is multiplied by the volatility factor,then based on the relationship of electric field and magnetic field given by the Maxwell equations,the distribution of magnetic field is gained.The structure chart on the cross section of TEM wave could be painted by the MATLAB software,and the characteristic impedance calculated.This research result could solve the calculating problem of off-axis transmission line,and provide a theoretical foundation for the machining accuracy of the coaxial transmission line.
出处
《通信技术》
2011年第10期10-12,共3页
Communications Technology
关键词
偏轴传输线
分式线性变换
TEM波
电磁场分布
特性阻抗
off-axis transmission line
linear fractional transformation
TEM wave
characteristic impedance
