A new frequency dependent finite difference time domain (FD FDTD) method using digital signal processing (DSP) is proposed. The dispersive media is characterized as an infinite impulse response (IIR) filter, directly ...A new frequency dependent finite difference time domain (FD FDTD) method using digital signal processing (DSP) is proposed. The dispersive media is characterized as an infinite impulse response (IIR) filter, directly leading to FDTD equations. The representation of a dispersive medium is therefore converted to a problem of digital IIR design. It is shown that the numerical results are consistent with analytic solution.展开更多
基金Supported by the National Natural Science Foundation of China!( 6 9771 0 1 0 )
文摘A new frequency dependent finite difference time domain (FD FDTD) method using digital signal processing (DSP) is proposed. The dispersive media is characterized as an infinite impulse response (IIR) filter, directly leading to FDTD equations. The representation of a dispersive medium is therefore converted to a problem of digital IIR design. It is shown that the numerical results are consistent with analytic solution.
