3. Noise factor

3.1 Definition

The definition of the noise figure (equation (26) ) involves comparing the signal-to-noise ratio at the input and output of a quadrupole [E 1 380] :

F = \frac{\frac{S_{l}}{N_{l}}}{}

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Noise factor

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page Representation of noise in quadrupoles

Two temperature or Y factor method

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Bibliography

(1) - ROTHE (H.), DAHLKE (W.) - Theory of noisy fourpoles - Proceedings of the IRE, vol. 56, issue 6, p. 811-818 (1956).
(2) - HILLBRAND (H.), RUSSER (P.) - An efficient method for computer aided noise analysis of linear amplifier networks -...

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