DocumentCode
1490513
Title
Noise-Figure Measurement of Differential Amplifiers Using Nonideal Baluns
Author
García-Pérez, Óscar ; González-Posadas, Vicente ; García-Muñoz, Luis Enrique ; Segovia-Vargas, Daniel
Author_Institution
Dept. of Signal Theor. & Commun., Univ. Carlos III de Madrid, Leganés, Spain
Volume
59
Issue
6
fYear
2011
fDate
6/1/2011 12:00:00 AM
Firstpage
1658
Lastpage
1664
Abstract
This paper analyzes the noise and gain measurement of microwave differential amplifiers using two passive baluns. A general model of the baluns is considered, including potential losses and phase/amplitude unbalances. This analysis allows de-embedding the actual gain and noise performance of the isolated amplifier by using single-ended measurements of the cascaded system and baluns. Finally, measured results from two amplifier prototypes are used to validate the theoretical principles.
Keywords
baluns; differential amplifiers; cascaded system; gain measurement; microwave differential amplifiers; noise measurement; noise-figure measurement; nonideal baluns; passive baluns; Gain; Gain measurement; Impedance; Impedance matching; Noise; Noise measurement; Resistors; Baluns; differential amplifiers; low-noise amplifiers; noise measurement;
fLanguage
English
Journal_Title
Microwave Theory and Techniques, IEEE Transactions on
Publisher
ieee
ISSN
0018-9480
Type
jour
DOI
10.1109/TMTT.2011.2124469
Filename
5744139
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