Abstract
The correction to the noise temperature of waveguide thermal noise generators due to nonuniformity of the heating of the waveguide line is considered. It is shown that, for a simplified model of a thermal noise generator, the minimum values of the corrections in a copper waveguide with dimensions of 2.4×1.2 mm and a waveguide of stainless steel with dimensions of 3.6×1.8 mm amount to 0.05 K and 0.15 K respectively, for a length of the nonuniformly heated part of the waveguide line of 80 mm.
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Additional information
Translated from Izmeritel'naya Tekhnika No. 5, pp. 46–49, May, 1998.
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Kistovich, Y.V., Petrosyan, O.G. Correction to the noise temperature of a waveguide thermal noise generator due to nonuniform heating of the channel. Meas Tech 41, 462–467 (1998). https://doi.org/10.1007/BF02506624
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DOI: https://doi.org/10.1007/BF02506624