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Numerical analysis of staircasing effects on cutoff frequencies for FDTD modeling of circular waveguides

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2 Author(s)
J. h. Beggs ; Dept. of Electr. & Comput. Eng., Pennsylvania State Univ., University Park, PA, USA ; R. j. Luebbers

The authors develop a method for modeling circular waveguides to minimize the effects of staircasing on the mode cutoff frequencies. A simple method for modeling circular cylinders is developed by examining the feed current for several radiating circular waveguide problems and by analyzing the numerical staircasing effects on the mode cutoff frequencies. The modeling method obtained is simple with no computational overhead.<>

Published in:

Antennas and Propagation Society International Symposium, 1993. AP-S. Digest

Date of Conference:

June 28 1993-July 2 1993