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Implementation of conductor losses in an FDTD algorithm combined with Floquet boundary conditions: Application to the study of millimeter‐wave resonant cavities
Author(s) -
Sauleau R.,
Thouroude D.,
Coquet Ph.,
Daniel J. P.,
Matsui T.
Publication year - 1999
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(19990720)22:2<103::aid-mop8>3.0.co;2-o
Subject(s) - finite difference time domain method , floquet theory , microwave , perfect conductor , optics , aperture (computer memory) , boundary value problem , plane wave , reflection coefficient , boundary (topology) , conductor , physics , reflection (computer programming) , plane (geometry) , computational physics , acoustics , geometry , mathematics , mathematical analysis , computer science , quantum mechanics , nonlinear system , scattering , programming language
Frequency characteristics of plane parallel Fabry–Perot cavities with square aperture metal mesh mirrors are studied theoretically using the finite‐difference time‐domain (FDTD) method. The use of Floquet boundary conditions enables us to reduce the size of the computational domain to one unit periodic volume. Metal losses are taken into account and implemented with first‐order surface impedance boundary conditions (SIBCs). We show their effects on the transmission coefficient of cavities with various grid parameters and illuminated by a normally incident plane wave in the 60 GHz band. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 22: 103–108, 1999.