Signal extraction techniques for time-domain analysis

Two signal extraction techniques, including one in the frequency domain and one in the time domain, are developed for the time-domain analysis of micr owave devices fed by a transmission line, for which only one FDTD calculati on is needed, and an incident wave and a reflected wave in both the time do main and frequency domain can be acquired from time-domain total waves. The former is applicable to dispersive and lossy transmission lines, and the l atter is applicable to only nondispersive and lossless ones, bat the latter has higher accuracy than the former. By comparison with two FDTD calculati ons, time-domain analysis in combination with two signal extraction techniq ues can reduce the computer expense. (C) 1999 John Wiley & Sons, Inc.