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False spectra formation in the differential two-channel scheme of the laser Doppler flowmeter
Denis Lapitan1, Dmitry Rogatkin1, Saydulla Persheyev2
1Laboratory of Medical and Physics Research, Moscow Regional Research and Clinical Institute named after M.F. Vladimirsky (MONIKI), Shepkina str. 61/2, Moscow, 129110, Russian Federation.
Biomedizinische Technik. Biomedical Engineering
|June 23, 2017
Abstract:
Noise in the differential two-channel scheme of a classic laser Doppler flowmetry (LDF) instrument was studied. Formation of false spectral components in the output signal due to beating of electrical signals in the differential amplifier was found out. The improved block-diagram of the flowmeter was developed allowing to reduce the noise.

