Noise Generation due to Time Delay Circuits
Takasi Endo, Kouichi Toyoshima, Yutaka Hirayoshi · Journal of the Physical Society of Japan · 2001
A quiet current with subshot noise is a regulated electron flow. When a time delay circuit, i.e. a low-pass filter is inserted into the flow, noise is generated in the high frequency region. By using a transistor circuit the noise generation due to the time delay is observed. A simple theoretical model explains the observed noise spectrum.