80-dB Microwave Noise from an Avalanche Transistor Circuit

Gytis Mykolaitis, Saulius Kersulis, Skaidra Bumeliene, Arunas Tamasevicius


Extremely high ‘excess noise ratio’ of 80 dB is observed from an avalanche transistor circuit, operating in a random pulse mode. Broadband noise spectrum measured from 30 MHz to 1 GHz exhibits good flatness with the nonuniformity of only  1 dB. Experiments have been performed with the silicon bipolar junction microwave transistors. An analog circuit model is proposed and investigated.

DOI: http://dx.doi.org/10.5755/j01.eee.21.5.13324

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Print ISSN: 1392-1215
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