Modified 2, 4 Scheme with Improved Phase Accuracy

FIGURE 2.8 (a) The inner and outer loops for the modified 2-D (2, 4) FDTD scheme, (b) Bisplitting of the outer loop and assignment of the eight diagonal field nodes 

The stability of the update equations (2.72)-(2.74) is ensured by the modified Courant criterion of 

The fourth-order FDTD method, so described, accomplishes low-phase errors even at relatively coarse resolutions, while its structural flexibility permits hybridization with the second-order Yee s technique. Also, the algorithm exhibits a relatively acceptable behavior for wideband applications. 

FIGURE 2.9 Calculation of the Ex component via the contribution of the principal x, and the adjacent x,-i and x1+ planes 

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Modified (2,4) Scheme with Improved Phase Accuracy... 

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