摘要
In previous papers, we presented a method to solve the characteristic impedances of five new transmission lines and thirteen existing lines. In this paper, in order to check the accuracy of the method in Ref. [1], a new method is adopted to deal with the transmission line with coupled square bars between parallel plates, and it is proved that the characteristic impedances of coupled regular polygon bars between parallel plates can be derived directly by converting the formulae or calculating the values of the characteristic impedances of coupled rods between ground planes.
