Title :
Numerical analysis of staircasing effects on cutoff frequencies for FDTD modeling of circular waveguides
Author :
Beggs, J.h. ; Luebbers, R.J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Pennsylvania State Univ., University Park, PA, USA
fDate :
June 28 1993-July 2 1993
Abstract :
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.<>
Keywords :
circular waveguides; finite difference time-domain analysis; waveguide theory; FDTD modeling; circular cylinders; mode cutoff frequencies; numerical staircasing effects; radiating circular waveguide; Antenna measurements; Antenna radiation patterns; Cutoff frequency; Electromagnetic analysis; Electromagnetic propagation; Electromagnetic waveguides; Feeds; Finite difference methods; Numerical analysis; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1993. AP-S. Digest
Conference_Location :
Ann Arbor, MI, USA
Print_ISBN :
0-7803-1246-5
DOI :
10.1109/APS.1993.385287
