DocumentCode :
913436
Title :
Transistor S parameter measurement: corrections for 2-port common-electrode impedance and the corresponding 2-port to 3-port transforms
Author :
Woods, Don
Author_Institution :
University of Surrey, Department of Chemical Physics, Guildford, UK
Volume :
7
Issue :
7
fYear :
1971
Firstpage :
162
Lastpage :
163
Abstract :
In 2-port transmission-parameter measurements on active devices, a residual common-electrode impedance can cause serious errors, particularly in the common-emitter configuration. Transforms are given which enable the true S parameters to be derived in terms of the measured parameters and the common-electrode impedance. It is shown that the inverses of these transforms can be used to derive the 3-port S parameters in terms of measured 2-port values. It is also shown that a unique relationship exists between the 2-port driving-point s parameters in the three configurations, which can be used as a partial check on system accuracy without the need for transformation to 3-port parameters.
Keywords :
electrical impedance; electrodes; transistors; 2 port to 3 port transforms; 2-port common electrode impedance; corrections; transistor S parameter measurement;
fLanguage :
English
Journal_Title :
Electronics Letters
Publisher :
iet
ISSN :
0013-5194
Type :
jour
DOI :
10.1049/el:19710106
Filename :
4235215
Link To Document :
بازگشت