Unified derivation of Johnson and shot noise expressions

被引:9
作者
Callegaro, L [1 ]
机构
[1] Ist Nazl Ric Metrol, I-10135 Turin, Italy
关键词
D O I
10.1119/1.2174034
中图分类号
G40 [教育学];
学科分类号
040101 ; 120403 ;
摘要
Shot noise and Johnson noise in electrical circuits are usually introduced by referring to completely separate physical models and derivations. We derive Johnson and shot noise expressions from the same physical model, an ideal tunnel junction, to show the deep connection between the two types of noise. The derivation uses concepts of quantum mechanics, thermodynamics, and signal processing. (C) 2006 American Association of Physics Teachers.
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收藏
页码:438 / 440
页数:3
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