Tanlock loop noise reduction using an optimised phase detector

AL-KHARJI AL-ALI, Omar, ANANI, Nader, AL-QUTAYRI, Mahmoud and AL-ARAJI, Saleh (2013). Tanlock loop noise reduction using an optimised phase detector. International Journal of Electronics, 100 (6), 746-761.

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Abstract

This article proposes a time-delay digital tanlock loop (TDTL), which uses a new phase detector (PD) design that is optimised for noise reduction making it amenable for applications that require wide lock range without sacrificing the level of noise immunity. The proposed system uses an improved phase detector design which uses two phase detectors; one PD is used to optimise the noise immunity whilst the other is used to control the acquisition time of the TDTL system. Using the modified phase detector it is possible to reduce the second- and higher-order harmonics by at least 50% compared with the conventional TDTL system. The proposed system was simulated and tested using MATLAB/Simulink using frequency step inputs and inputs corrupted with varying levels of harmonic distortion. A hardware prototype of the system was implemented using a field programmable gate array (FPGA). The practical and simulation results indicate considerable improvement in the noise performance of the proposed system over the conventional TDTL architecture.

Item Type:	Article
Research Institute, Centre or Group - Does NOT include content added after October 2018:	Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Electronic Materials and Sensors Research Group
Identification Number:	https://doi.org/10.1080/00207217.2012.720950
Page Range:	746-761
Depositing User:	Nader Anani
Date Deposited:	03 Jul 2015 10:20
Last Modified:	18 Mar 2021 23:15
URI:	https://shura.shu.ac.uk/id/eprint/10152

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