Title :
An experiment for verification of auxiliary transmission line method to evaluate a microwave thermal noise source
Author :
Nakano, H. ; Murakami, H. ; Inoue, T. ; Kato, Y.
Author_Institution :
Nat. Metrol. Inst. of Japan, Nat. Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan
Abstract :
In order to verify the usefulness of an auxiliary transmission line method, which we have already proposed to evaluate the noise temperature of a microwave thermal noise source, a liquid nitrogen cooled coaxial noise source system has been constructed and its preliminary experiment has been conducted. Then, this measurement result and a result calibrated to the noise source with two known standards have been compared.
Keywords :
electric noise measurement; high-frequency transmission lines; microwave measurement; thermal noise; transmission line theory; N/sub 2/; auxiliary transmission line method verification; liquid nitrogen cooled coaxial noise source system; microwave thermal noise source; noise source calibration; noise temperature; standards; Circuit noise; Coaxial components; Microwave theory and techniques; Noise generators; Noise measurement; Power transmission lines; Radiometry; Signal to noise ratio; Temperature; Transmission line measurements;
Conference_Titel :
Precision Electromagnetic Measurements, 2002. Conference Digest 2002 Conference on
Conference_Location :
Ottawa, Ontario, Canada
Print_ISBN :
0-7803-7242-5
DOI :
10.1109/CPEM.2002.1034725
