METHOD AND DEVICE FOR MEASURING LOW SIGNAL-TO-NOISE RATIOS Russian patent published in 1997 - IPC

Abstract RU 2072522 C1

FIELD: radio measurements. SUBSTANCE: method involves narrow-band filtering of input process, phase reversal of output process by means of phase switcher and control device, and comparison of output process spectra with same process but transformer with further estimation of signal- to-noise ratio. Device implementing this method has narrow-band filter, control device, phase switcher, spectrum analyzer, and selector switch. EFFECT: improved measurement accuracy. 2 cl, 4 dwg

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RU 2 072 522 C1

Authors

Il'In A.G.

Pol'Skij Ju.E.

Dates

1997-01-27—Published

1993-04-21—Filed