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Proceedings Paper

A sampling wattmeter for noise power measurements
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Paper Abstract

Low-frequency noise measurements are usually performed by measuring the voltage across a dipole, or the current through a wire. Here we demonstrate the feasibility of the measurement of the noise power flowing through a line connecting two dipoles. A sampling wattmeter, with spectral display capabilities, having a bandwidth in the range 1 Hz - 10 kHz and sensitivity better than 10-22 W/Hz is here described, and employed to measure the noise power flowing between two resistors at different temperatures. Possible applications of the device include noise thermometry, noise measurement of active devices under load condition, investigations of excess noise below thermal threshold.

Paper Details

Date Published: 23 May 2005
PDF: 10 pages
Proc. SPIE 5844, Noise in Devices and Circuits III, (23 May 2005); doi: 10.1117/12.608787
Show Author Affiliations
Luca Callegaro, Istituto Elettrotecnico Nazionale Galileo Ferraris (Italy)
Marco Pisani, Istituto di Metrologia Gustavo Colonnetti (Italy)


Published in SPIE Proceedings Vol. 5844:
Noise in Devices and Circuits III
Alexander A. Balandin; Francois Danneville; M. Jamal Deen; Daniel M. Fleetwood, Editor(s)

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