三角形变形脊波导特征值的有限元分析

Eigenvalue analysis of triangle-ridge waveguide in deformation on finite element method

针对波导器件在生产使用中会产生各种变形,提出用有限元法研究脊波导器件在多种受力变形时的传输特性,得出了采用有限元法计算特性参数的相关公式。编程计算了三角形脊波导在不同变形时的特征值,求解了三角形变形脊波导在不同程度变形时的主模截止波长和单模带宽并绘制了相应的关系曲线,给出了不同变形时的场结构图,为脊波导的实际应用和研究提供参考。

In accordance with the various deformations of ridge waveguide apparatus in manufacture and use, adopt the finite element method to research the influence of transmission characteristic of deformatiou under various stress to ridge waveguide, give the interrelated formulas of characteristic paran^ters. By programming the text calculates the eigenvalue of triangle- ridge waveguide in different deformations, obtains the cutoff wavelength and bandwidth of waveguide deformed in different level and draws the corresponding curves, gives the corresponding field patterns and then supply reference for ridge waveguide in practical application and study.