Enhanced One-Port Noise Temperature Measurements Using a Noise Figure Meter

Abstract

Improved accuracy in one-port noise temperature measurements made with noise figure meters is demonstrated through use of radiometer principles. Equations for properly correcting for mismatch effects are interpreted for use with noise figure meters calibrated with diode noise sources. Results presented for a C-band solid-state cold noise source and a thermal hot noise source are shown to be substantially improved with the developed approach, and are in good agreement with radiometric measurements of the same sources.