EXCESS NOISE IN SEMICONDUCTORS.
Status rept. 1 Apr-30 Jun 68,
IIT RESEARCH INST CHICAGO ILL
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Probability density distributions of the interval spacings between zero-crossings of band-limited Nyquist and 1f noise signals are examined using an interval-to-pulse-height converter and a multichannel pulse-height analyzer. The Nyquist noise distributions follow a simple exponential law, as expected. In the case of 1f noise, the distributions are approximately proportional to the inverse square of the spacing interval. The probability density is statistically stationary, that is, independent of sample length and independent of the sample selected. For signals in a 1 Hz to 5 kHz band, the most probable spacing interval is 1.2 x 0.0001 sec. which occurs with a maximum probability density of 2.2 x 1000sec. The most probable value is inversely proportional to the highest signal frequency present and the peak probability density is proportional to this frequency. Author
- Solid State Physics