Comments on 'Polygonal Coaxial Line wth Round Center Conductor'

摘要

The author presented an expression for the attenuation constant alpha of a polygonal coaxial line with round center conductor. Apart from a typographical error in (20b), other more serious errors are believed to exist. First, the fN expression given in (20b) should be corrected. In addition, it is believed that the values of fN reported in the above paper for the special cases N = 3,4,5, and 6 are also in error. By examining these numbers it becomes very clear that the corrected expression of fn is itself in error. This is because one would expect fN to increase, and not exceed 1, as N increases. Indeed, fN should reach 1 only as N approaches infinity, which corresponds to the regular coaxial line case.