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Progress In Electromagnetics Research
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A NEW EFFICIENT FDTD TIME-TO-FREQUENCY-DOMAIN CONVERSION ALGORITHM

By Y. H. Liu, Q. H. Liu, and Z.-P. Nie

Full Article PDF (151 KB)

Abstract:
The time-to-frequency-domain conversion is often required in many applications of the finite-difference time-domain (FDTD) method. This paper presents a new FDTD time-to-frequencydomain conversion algorithm based on the optimization of nonuniform fast Fourier transform (NUFFT) with several redundancy-reduction techniques. The proposed algorithm can perform the FDTD conversion at multiple desired frequencies without the limitation of uniformly spaced frequencies in the fast Fourier transform (FFT). In addition, with a very low storage cost, the algorithm can be much more efficient than other FDTD conversion techniques if a moderate number of frequencies or more are of interest. This algorithm is very useful for some FDTD applications.

Citation:
Y. H. Liu, Q. H. Liu, and Z.-P. Nie, " a new efficient FDTD time - to - frequency - domain conversion algorithm ," Progress In Electromagnetics Research, Vol. 92, 33-46, 2009.
doi:10.2528/PIER09030906
http://www.jpier.org/PIER/pier.php?paper=09030906

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