This paper presents a fast and accurate technique for characterization
of the step recovery diode (SRD) from 45 MHz to 18 GHz with a network
analyzer. A flexible test fixture is designed for measuring SRD chips
. The voltage dependence of the capacitance and the series resistance
are extracted om the measured S-parameters. Based on the measured resu
lts, a more accurate model of the step recovery diode has been develop
ed. This model can be easily implemented in a circuit simulator. (C) 1
998 John Wiley & Sons, Inc.