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Least Square Method to Optimize the Coefficients of Complex Finite-Difference Space Stencils

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2 Author(s)
Yang, B. ; Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ ; Balanis, C.A.

The numerical dispersion of the finite-difference time-domain methods can be lowered by using the complex space stencils. Properly adjusting the coefficients of the space stencils results in a further dispersion reduction. However, it is not trivial to determine the optimal values of the coefficients. This paper uses the least square method to optimize various finite-difference stencils. The method is validated by the numerical analysis

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:5 ,  Issue: 1 )