RT info:eu-repo/semantics/article
T1 Numerical Dispersion Relation for the 2-D LOD-FDTD Method in Lossy Media
A1 Pereda, José A.
A1 Grande Sáez, Ana María
AB A closed-form expression is derived for the numerical dispersion relation of the 2-D locally one-dimensional finite-difference time-domain (LOD-FDTD) method in lossy media. In contrast to the lossless formulation, we found that transverse-electric (TEz) and transverse-magnetic (TM z ) waves in lossy media exhibit different numerical dispersion relations. Moreover, when the material relaxation-time constant is not well resolved by the integration time-step, the TM z case shows much worse accuracy than the TE z case. To remove this limitation, a split-field LOD-FDTD formulation for TM z waves is then considered, which exhibits the same dispersion relation as the LOD-FDTD method for TE z waves. The validity of the theoretical results is illustrated through numerical simulations.
PB Institute of Electrical and Electronics Engineers (IEEE)
SN 1536-1225
YR 2017
FD 2017
LK http://uvadoc.uva.es/handle/10324/33610
UL http://uvadoc.uva.es/handle/10324/33610
LA eng
NO IEEE Antennas and Wireless Propagation Letters, 2017, Volume 16, pp. 2122-2125
NO Producción Científica
DS UVaDOC
RD 22-nov-2024