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Modal Cutoff in Coaxial Transmission Lines of Conical and Cylindrical Geometries



Claude Weil, Billy F. Riddle, David R. Novotny, Robert T. Johnk


We present numerical data on normalized cutoff wavelength versus cone half-angle for the first three higher-order TEml 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 ocne 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.
Proceedings Title
Dig., IEEE Microwave Theory Tech. Intl. Symp.
Conference Dates
May 20-25, 2001
Conference Location
Phoenix, AZ


coaxial, conical, cylindrical, propagation modes, transmission lines


Weil, C. , Riddle, B. , Novotny, D. and Johnk, R. (2001), Modal Cutoff in Coaxial Transmission Lines of Conical and Cylindrical Geometries, Dig., IEEE Microwave Theory Tech. Intl. Symp., Phoenix, AZ (Accessed June 14, 2024)


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Created April 30, 2001, Updated October 12, 2021