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Time-domain extrapolation to the far field based on FDTD calculations

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3 Author(s)
Yee, K.S. ; Lockheed Missiles & Space Co. Inc., Sunnyvale, CA, USA ; Ingham, D. ; Shlager, K.

A scheme to extrapolate scattered fields calculated by the finite-difference time-domain (FDTD) method to the far zone is developed. It could replace the usual extrapolation scheme for a single frequency, in that it yields a spectrum with only one incident pulse. The method comprises the following steps: (1) using an incident pulse; (2) performing an FDTD calculation and using the currently calculated data on S to extrapolate to the far field; and (3) Fourier transforming the far-field time response to obtain the frequency-domain response. The approach seems to be more convenient in time-domain calculations and more in agreement with the spirit of FDTD

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:39 ,  Issue: 3 )

Date of Publication:

Mar 1991

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