Title :
FDTD method coupled with FFT: a generalization to open cylindrical devices
Author :
Navarro, A. ; Nunez, M.J.
Author_Institution :
Dept. de Fisica, Murcia Univ., Spain
fDate :
5/1/1994 12:00:00 AM
Abstract :
The extension of a numerical method, based on an FDTD algorithm coupled with FFT, is presented. It can be widely applied to the analysis of axially symmetric passive microwave devices. By incorporating the proper radiation conditions in the algorithm, its capacity to deal with the study of open systems is shown; this allows the determination of its quality factor, as well as the resonant frequency and the spatial distribution of the modes. On the other hand, the proper performance of the technique has been verified (stability of the algorithm, accuracy of results) for modes of high angular dependence
Keywords :
Q-factor; circular waveguides; dielectric resonators; fast Fourier transforms; finite difference time-domain analysis; FDTD method; FFT; axially symmetric passive microwave devices; dielectric resonators; high angular dependence modes; numerical method; open cylindrical devices; quality factor; radiation conditions; resonant frequency; spatial distribution; Dielectric devices; Finite difference methods; Mesh generation; Microwave devices; Open systems; Permittivity; Q factor; Resonance; Resonant frequency; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
