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IMPROVED PERFORMANCE PHASE DETECTOR FOR MULTIPLICATIVE SECOND-ORDER PLL SYSTEMS USING DEFORMED ALGEBRA

Instituto Federal de Educação, Ciência e Tecnologia da Bahia, Grupo de Pesquisa em Sinais e Sistemas, Rua Emídio dos Santos, S/N, Barbalho, 40301-015, Salvador-BA, Brazil

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EDUARDO T. F. SANTOS

Instituto Federal de Educação, Ciência e Tecnologia da Bahia, Grupo de Pesquisa em Sinais e Sistemas, Rua Emídio dos Santos, S/N, Barbalho, 40301-015, Salvador-BA, Brazil

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JOSÉ M. ARAÚJO

Instituto Federal de Educação, Ciência e Tecnologia da Bahia, Grupo de Pesquisa em Sinais e Sistemas, Rua Emídio dos Santos, S/N, Barbalho, 40301-015, Salvador-BA, Brazil

Corresponding author.

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https://doi.org/10.1142/S021812661450008XCited by:0 (Source: Crossref)

Abstract

Phase-locked loops (PLL) is a phase and/or frequency tracking system, widely used in communication and control systems. The sinusoidal multiplicative type PLL still remains a recurrent model, due the fact that its derivation is originated from the maximum likelihood approach. In this note, it is showed as a generalized product, called q-product, which can be used to implement the phase detector and improve some important parameters of the PLL system, as the block linearity and pull-in characteristics. Numerical examples are presented in order to illustrate the proposal.

This paper was recommended by Regional Editor Majid Ahmadi.

Keywords:

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