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A modified locally conformal finite‐difference time‐domain algorithm for modeling three‐dimensional perfectly conducting objects
Author(s) -
Dey Supriyo,
Mittra Raj
Publication year - 1998
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(19980420)17:6<349::aid-mop4>3.0.co;2-h
Subject(s) - conformal map , microwave , algorithm , microstrip , scheme (mathematics) , resonator , antenna (radio) , domain (mathematical analysis) , mathematics , finite difference time domain method , topology (electrical circuits) , computer science , mathematical analysis , electronic engineering , engineering , physics , optics , telecommunications , combinatorics
A stable conformal finite‐difference time‐domain algorithm, that incorporates the backward‐weighted averaging scheme to accurately model curved metallic structures, is presented in this paper. The modified approach overcomes the size and shape limitations of the scheme that was proposed previously by the authors, and this improvement is achieved with a little increase in the complexity of the algorithm. The advantage of using the present scheme over the previous one is illustrated by carrying out a comparative study of the canonical problem of a spherical cavity resonator. Further usefulness of the method is exemplified by modeling a gap‐coupled circular microstrip patch antenna. © 1998 John Wiley & Sons, Inc. Microwave Opt Technol Lett 17: 349–352, 1998.