椭圆波导中的场量和场图

Field Expressions and Plots in Elliptic Waveguide

虽然椭圆波导在卫星通信和雷达馈线中已得到广泛应用．然而在已往的文献中，用解析方法绘制的具有完整电磁力线的标准场图却一直没有给出．在一些微波工程的著作和教材中仍然采用Ｃｈｕ的有错误的场图．本文给出了不同偏心率时椭圆波导中六个主要模的场量的傅里叶级数表示式，由此绘出了它们的场图．

The elliptic waveguide have been widely used in several systems such as satellite communication and radar feed lines. However, in the past literatures the field patterns with complete electromagnetic force lines have never been plotted accurately in terms of analytic method. Many works and textbooks on microwave engineering still uses Chu's incorrect patterns. In this paper, the analytic expressions in Fourier series for the field components of six modes in elliptic guides with different eccentricities are given. The field patterns of these modes are plotted.