Research Article
Reduction of FDTD Stair-Casing Error regarding to Metamaterials by Using High-Order Polynomial Transformation Functions
Figure 6
The εr component of the field rotator around the R2 boundary: (a) the linear function, (b) the third-order function, and (c) the fifth-order function. The circular boundary (red dashed line) was approximated to a stair-cased boundary (solid blue line).
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| (b) |
| (c) |