A new conductor treatment technique for R-FDTD

In this paper, the reduced finite-difference time-domain method (R-FDTD), which can reduce the number of saved field components from six to four when using the Yee algorithm for the solution of Maxwell equations is used to solve scattering problems. To do so, a more efficient and simpler conductor treatment technique for R-FDTD is developed and substituted for the redundancy one proposed by the original authors, which must calculate the induced charge on the conductor region. Considering the two-dimensional scattering case, as an example, numerical results generated by R-FDTD using the new conductor treatment technique meet the regular FDTD's closely while saving about 33% computer memory.