Systems for making automatic noise figure measurements of millimeter wave mixers have been developed using both analog and digital techniques. The effect of IF mismatch on the measured noise figures is also determined with these methods. The measurement systems are versatile enough to be used to measure the noise figure of receivers anywhere from 30 to 300 GHz.
R. E. Forsythe,
J. J. McSheehy,
"Automatic Millimeter Wave Mixer Noise Figure Measurements", Proc. SPIE 0337, Millimeter Wave Technology I, (22 October 1982); doi: 10.1117/12.965931; https://doi.org/10.1117/12.965931