Title :
A method for evaluating the noise temperature of microwave thermal noise sources by introducing an auxiliary transmission line
Author :
Kato, Yoshihiko ; Komiyama, Koji ; Yokoshima, Ichiro
Author_Institution :
Electrotech. Lab., Ibaraki, Japan
fDate :
1/1/1988 12:00:00 AM
Abstract :
A method is proposed to evaluate the noise temperature of a microwave thermal noise source. The noise temperature correction factor due to the transmission line between the termination and the output is expressed in terms of directly measurable parameters. The correction factor is determined by introducing an auxiliary transmission line composed to two lines connected back-to-back, each of which is identical to that of the unknown source
Keywords :
electric noise measurement; measurement errors; measurement theory; microwave devices; noise generators; thermal noise; auxiliary transmission line; correction factor; measurement errors; microwave thermal noise sources; noise temperature; Loss measurement; Microwave theory and techniques; Noise generators; Noise measurement; Power transmission lines; Propagation losses; Temperature distribution; Temperature measurement; Thermal resistance; Transmission line measurements;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
