Title :
A Highly Linear Digital Detector for Noise Parameter Measurements at Microwave Frequencies
Author :
Rolfes, Ilona ; Musch, Thomas ; Schiek, Burkhard
Author_Institution :
Ruhr-University Bochum, RF & Microwave Engineering Institute, Universitaetsstr. 150, 44801 Bochum, Germany. Tel.: +49 234 32-26497, Fax: +49 234 32-14167, e-mail: Ilona@HF.Ruhr-Uni-Bochum.de
Abstract :
Improvements in the determination of the 4 real parameters Fmin, Rn, Gopt, Bopt which completely describe the noise behaviour of a linear two-port are presented. An accurate noise parameter measurement method, the seven-state-method, is developed. Contrary to previous works this method is mainly based on cold noise power measurements. An additional measurement of the input admittance of the DUT with a network analyser as needed for other techniques is not necessary. In addition, the noise power measurement accuracy is improved by the development of a highly linear digital detector.
Keywords :
Admittance measurement; Detectors; Equations; Frequency measurement; Microwave frequencies; Microwave measurements; Noise figure; Noise generators; Noise measurement; Power measurement;
Conference_Titel :
Microwave Conference, 2001. 31st European
Conference_Location :
London, England
DOI :
10.1109/EUMA.2001.338940
