Fourier description of lock-in

Authors

  • J. A. Dávila Pintle Benemérita Universidad Autónoma de Puebla

Keywords:

Lock-in, description, measurement

Abstract

In this study, a new interpretation about the operation of a traditional lock-in and dual lock-in is presented from the viewpoint of Fourier analysis. Once the mathematical principles under which these devices operate are understood, we could take full advantage of the magnitude and phase of the Fourier coefficients to measure the physical variables, as shown in the final example of this study. Also, a comparison between signal-to-noise ratio (SNR) of a square reference lock-in and a pure sinusoid lock-in is also presented.

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Published

2013-01-01

How to Cite

[1]
J. A. Dávila Pintle, “Fourier description of lock-in”, Rev. Mex. Fis. E, vol. 59, no. 1 Jan-Jun, pp. 1–7, Jan. 2013.

Issue

Vol. 59 No. 1 Jan-Jun (2013): Revista Mexicana de Física E

Section

Artículos

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