TITLE
USAGE OF FREQUENCY LOCKED LOOP FOR TIME-DIGITAL FILTERING AND OTHER APPLICATIONS
AUTHOR(S)
Djurdje M. Perišić, Aleksandar Žorić
ABSTRACT
This article describes development, analysis, application, and simulation of a recursive Time Frequency Locked Loop (TFLL) based on the measurement and processing of the periods of the input and output signals. TFLL is a linear discrete system of the second order, which regulates its output once per the input period. The parameters of TFLL are determined by
the ratios of clock frequencies which have to be in the predefined relationships for the stable functioning of TFLL. Mathematical description, analysis of stability conditions and properties of TFLL are performed using Z transform. The relations of the parameters which correspond to the specific applications are analyzed. Using mathematical analyses and
simulations, it is shown that TFLL is suitable for powerful noise rejection, for the different predicting and tracking applications, for the measurements of the frequency, for the filtering of impulse signal periods as well as for the other usual applications of FLL. Special emphasis is given to the development of a Time digital filter based on TFLL, using the theory of digital filters and the Mat-lab tools intended for digital filters
DOI
PAGES
69-74
DOWNLOAD
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How to cite this article:
Djurdje M. Perišić, Aleksandar Žorić , USAGE OF FREQUENCY LOCKED LOOP FOR TIME-DIGITAL FILTERING AND OTHER APPLICATIONS, Proceedings of International Scientific Conference “UNITECH 2023” – Gabrovo, 69-74