The Characterization of Load-Dependent Devices

Abstract

For frequencies above 1500 MHz it is necessary to down convert as for conventional noise figure measurements. The supplied software includes instrument calibration using a standard 50 ohm noise source, short, open and through connections. True available gain is computed for all programmed source impedances. Graphic output of Noise and Available Gain circles is provided as well as tabular data which show the error of the fit of the well-known noise figure and gain equations 141 .