首先介绍了平面电路分元法 ,并以一工作在 Ka频段 (毫米波 )的波导 T形接头功率传输问题作为实例 ,用平面电路分元法进行了计算 ,其结果与用其它方法所得结果和实验结果有着良好的吻合。这表明 ,采用分元法用于毫米波是可行的一种方法。 First of all, the planar circuit method is introduced, and the power transmission of a T-junction waveguide in Ka frequency band (millimeter wave) is taken as an example. The results are compared with those obtained by other methods The experimental results have a good match. This shows that the use of the element method for millimeter waves is a viable method.