An Elliptical Cylindrical FDTD Algorithm for Modeling Conformal Patch Antenna
- Resource Type
- Periodical
- Authors
- Naser-Moghaddasi, M.; Sadeghzadeh, R. A.; Ghiamy, M.; Ali Lotfi Neyestanak, A.; Virdee, B. S.
- Source
- IEEE Transactions on Antennas and Propagation IEEE Trans. Antennas Propagat. Antennas and Propagation, IEEE Transactions on. 58(12):3990-3996 Dec, 2010
- Subject
- Fields, Waves and Electromagnetics
Aerospace
Transportation
Components, Circuits, Devices and Systems
Finite difference methods
Time domain analysis
Mathematical model
Microstrip antennas
Equations
Power system stability
Absorbing boundary condition
conformal patch antenna
Courant condition
finite-difference time-domain (FDTD)
- Language
- ISSN
- 0018-926X
1558-2221
An explicit finite-difference time-domain (FDTD) method is described using a uniform elliptical cylindrical spatial grid for time-domain Maxwell's equations to accurately and efficiently model conformal elliptical cylindrical line-fed patch antennas and overcome stair-casing errors. Such errors are encountered when a Cartesian spatial grid is used for modeling curved surfaces. In addition, the method described in this paper obviates coding complexity encountered in modeling of curved surfaces which is manifest using CP-FDTD or CFDTD techniques. Characterizing expressions representing the absorbing boundary condition and Courant stability condition are presented and used to provide a highly effective algorithm to simulate conformal microstrip antennas. The proposed FDTD algorithm is validated against HFSS results showing excellent correlation.