A Simple Technique for Measuring Signal Source Noise

Vaclav Papez, Stanislava Papezova

Abstract

Any practical oscillator has fluctuations in its amplitude and frequency. These fluctuations represent random amplitude modulation and phase jitter in the time domain. In the frequency domain there is a broadening of the signal frequency spectrum around a nominal frequency. The basic noise is a quantification of the quality of each oscillator and generator, and a measure of the quality of the equipment and of the system in which they are used. These noises determine the external interference immunity of all equipment and the interferences generated in the most frequent applications, in radio communication systems by themselves will work outwards.

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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