Title :
Using a Load Tuner to Improve the Accuracy of Noise Characterization
Author :
Simpson, Gary R. ; Pastori, William E.
Abstract :
In principle, the noise figure of any microwave device is independent of load impedance; however, because of error sensitivities, a load tuner is required to achieve best noise measurement accuracy. This is because a high ouput reflection coefficient of a device under test can greatly increase the measurement receiver noise figure. This paper also presents a direct method of detecting and avoiding oscillations due to simultaneous input and output tuning.
Keywords :
Acoustic reflection; Active noise reduction; Equations; Impedance measurement; Microwave devices; Noise figure; Noise measurement; Performance gain; Testing; Tuners;
Conference_Titel :
ARFTG Conference Digest-Spring, 33rd
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
0-7803-5686-1
DOI :
10.1109/ARFTG.1989.323941
