A new approach for analyzing waveguide junctions containing conductive cylindrical objects is proposed. The algorithm is based on mode matching technique using local projection functions, which improves the numerical conditioning of the problem. Moreover, the approach enhances computational efficiency by reducing the boundary where the numerical integration is required. Both convergence and accuracy of the method were tested by using several examples, including multi-section microwave filters, and validated through comparison with results obtained using the finite element method implemented in a commercial full-wave simulator.

翻译：本文提出了一种分析含导电圆柱体波导结的新方法。该算法基于采用局部投影函数的模式匹配技术，改善了问题的数值条件。此外，该方法通过减少需要数值积分的边界，提高了计算效率。通过多个实例（包括多节微波滤波器）测试了该方法的收敛性和精度，并与商用全波仿真器中实现的有限元法所得结果进行了对比验证。