计算表面波特征方程的一种新的数值方法

New numerical method to solve eigenvalue equation of surface wave

推导了同轴线馈电的微带天线表面波电磁场表达式及其特征方程。结合遗传算法与参数跟踪策略形成一种新的算法,并基于该算法对表面波特征方程进行了精确数值求解,求解结果与本问题的已有结论吻合的很好。该方法具有简单、通用、求解精度高等优点。

The electromagnetic field expressions and eigenvalue equation of surface wave of microstrip antenna fed by coaxial line were deduced. By combining genetic algorithm （GA） and parameter tracking scheme （PTS）, a new algorithm was developed and the eigenvalue equation was solved accurately. The computing results were agreeable with the available ones. The algorithm presented is of some advantages, such as simpleness, generalization, and precision etc.