ACCURATE ANALYSIS OF LOSSES IN WAVE-GUIDE STRUCTURES BY COMPACT 2-DIMENSIONAL FDTD METHOD COMBINED WITH AUTOREGRESSIVE SIGNAL ANALYSIS

An efficient two-dimensional finite-difference time-domain (2-D FDTD) method combined with an autoregressive (AR) signal analysis has been p roposed thr analyzing the propagation properties of microwave guiding structures, The method is especially suitable for analyzing lossy tran smission lines; and in contrast with previous approaches, it is based on an algorithm of a real domain only, The algorithm is verified by co mparing the numerical results with exact solutions for dielectric load ed rectangular waveguides. The conductor losses in a variety of micros trip lines and coplanar waveguides have been accurately estimated by s olving the electromagnetic fields in the conductors directly.