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Modal cutoff in coaxial transmission lines of conical and cylindrical geometries

By: Novotny, D.R.; Riddle, B.F.; Weil, C.M.; Johnk, R.T.;

2001 / IEEE / 0-7803-6538-0

Description

This item was taken from the IEEE Conference ' Modal cutoff in coaxial transmission lines of conical and cylindrical geometries ' We present numerical data on normalized cutoff wavelength versus cone half-angle for the first three higher-order TE/sub m1/ modes, as well as four other modes of interest, in conical coaxial transmission lines (the ""co-conical"" line). These are given as a function of the ratio of outer-to-inner cone half-angles (proportional to line impedance) for outer cone half-angles of 10 and 22.5 degrees. Results were compared to those for the coaxial transmission line of cylindrical geometry and found to be qualitatively similar.