Noise Figure Measurement of the UHF and Microwave Transistors
Wladyslaw Adamski · 1980
UHF and microwave transistors inserted into the microwave transmission line are two-ports of very small gain and mismatched output. It causes the serious testing problems resulting from the own noise of the measurement system. A new method and set-up for the transistor noise figure measurement are presented. Using a matching passive two-port at the transistor output and utilizing the three-state automatic measurement method of amplifier noise figure the elimination of the measurement error caused by the meter receiver's own noise has been obtained. The transistor test fixtures for measurements in 0,1-1 GHz and 1-2 GHz band are presented.