Title :
Modal cutoff in coaxial transmission lines of conical and cylindrical geometries
Author :
Weil, C.M. ; Riddle, B.F. ; Novotny, D.R. ; Johnk, R.T.
Author_Institution :
Radio-Frequency Technol. Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
Abstract :
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.
Keywords :
coaxial cables; transmission line theory; co-conical line; coaxial transmission lines; cone half-angle; conical geometries; cylindrical geometries; higher-order TE/sub m1/ modes; modal cutoff; normalized cutoff wavelength; numerical data; Coaxial components; Equations; Geometry; NIST; Power transmission lines; Prototypes; Tellurium; Transmission line theory; Transmission lines; US Government;
Conference_Titel :
Microwave Symposium Digest, 2001 IEEE MTT-S International
Conference_Location :
Phoenix, AZ, USA
Print_ISBN :
0-7803-6538-0
DOI :
10.1109/MWSYM.2001.967114
