Compact two-dimensional FD-TD analysis of attenuation properties of lossy microstrip lines

A compact two-dimensional FDTD (2-D FDTD) algorithm has been applied to the analysis of propagation properties of lossy microstrip lines. The electromagnetic field in the conductors are analyzed by forming grids inside the conductors to consider the conductor loss of microstrip lines. Furthermore, the autoregressive (AR) signal analysis method is combined to obtain accurate propagation constants, and good agreement between computational and experimental results is obtained.<>