Application of signal-processing techniques to dipole excitations in the finite-difference time-domain method
Date
2002
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Source Title
Journal of Electromagnetic Waves and Applications
Print ISSN
0920-5071
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Publisher
Taylor & Francis
Volume
16
Issue
5
Pages
671 - 687
Language
English
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Abstract
The applications of discrete-time signal-processing techniques, such as windowing and filtering for the purpose of implementing accurate excitation schemes in the finite-difference time-domain (FDTD) method are demonstrated. The effects of smoothing windows of various lengths and digital lowpass filters of various bandwidths and characteristics are investigated on finite-source excitations of the FDTD computational domain. Both single-frequency sinusoidal signals and multifrequency arbitrary signals are considered.
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Keywords
Computer simulation , Difference equations , Electromagnetic wave scattering , Finite difference method , Low pass filters , Signal processing , Table lookup , Time domain analysis , Dipole excitations , Finite-difference time-domain method , Multifrequency arbitrary signals , Single-frequency sinusoidal signals , Antenna radiation