표 1. | Table 1. 정확도 비교를 위한 계산 조건 | Calculation condition for comparison of accuracy.

FDTD Variables grid length (Δx=Δy) [m] 0.0015
time step (Δt) [ps] 1
frequency (f) [GHz] 10
ELND-FDTD Variables Concrete α 1.19329394108659
s1 1.00489036223125
s2 0.99952599495495
Free-space α 1.01655624891844
s1 1.00037336046509
Concrete relative permittivity 13
conductivity [S/m] 0.021