Title :
An experiment for verification of the auxiliary transmission-line method to evaluate a microwave thermal noise source
Author :
Nakano, Hiroshi ; Murakami, Hiroshi ; Inoue, Takeumi ; Kato, Yoshihiko
Author_Institution :
Nat. Metrol. Inst. of Japan, Tsukuba, Japan
fDate :
4/1/2003 12:00:00 AM
Abstract :
In order to verify the usefulness of the auxiliary transmission-line method, which has been proposed to evaluate the noise temperature of a microwave thermal noise source, a liquid nitrogen-cooled coaxial noise source system has been constructed and a preliminary experiment has been made. This measurement result and a result calibrated with two known references have been compared, and it was confirmed that they were in good agreement.
Keywords :
high-frequency transmission lines; microwave measurement; noise measurement; thermal noise; auxiliary transmission-line method; coaxial noise source system; liquid nitrogen-cooled system; microwave radiometry; microwave thermal noise source; noise temperature; Circuit noise; Coaxial components; Loss measurement; Microwave theory and techniques; Noise generators; Noise measurement; Temperature distribution; Temperature measurement; Transmission line measurements; Transmission lines;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2003.810009
