Performing 3-D FDTD Simulations in less than 3 Seconds on a Personal Computer and its Application to Genetic Algorithm Antenna Optimization

FDTD simulations generally require significant computational resources and time. This paper systematically reduces the number of time steps and the grid size to determine the shortest simulation time that returns results with tolerable error for microstrip antenna simulations and their optimization...

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Bibliographic Details
Published in:Applied Computational Electromagnetics Society journal 2005-07, Vol.20 (2), p.128
Main Authors: Griffiths, L A, Furse, C M
Format: Article
Language:English
Subjects:
Design optimization
Errors
Finite difference time domain method
Genetic algorithms
Insertion loss
Microprocessors
Microstrip antennas
Personal computers
Simulation
Tolerances
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Summary:FDTD simulations generally require significant computational resources and time. This paper systematically reduces the number of time steps and the grid size to determine the shortest simulation time that returns results with tolerable error for microstrip antenna simulations and their optimization of insertion loss with the genetic algorithm. Although the error would generally be unacceptable for traditional antenna simulations, it is sufficiently small to optimize their design. Simulations in less than 3 seconds on a P4 2.8 GHz processor were shown to be usable, with error approximately equal to manufacturing tolerances. A dual band ‘waffle’ antenna is designed that has better performance than the traditional dual band “F” antenna.
ISSN:1054-4887
1943-5711