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Nasir, Q. and Al-Araji, S. (2013) Performance Evaluation of Sigma Delta Zero Crossing DPLL. The IEEE International Conference on Electronics, Circuits, and Systems, 11-14 December 2011, Beirut.

has been cited by the following article:

• TITLE: Fixed Point Iteration Chaos Controlled ZCDPLL

  AUTHORS: Qassim Nasir

  KEYWORDS: Non-Uniform Sampling, Digital Phase Locked Loops, Zero Crossing DPLL, Chaos Control

  JOURNAL NAME: International Journal of Communications, Network and System Sciences, Vol.9 No.11, November 24, 2016

  ABSTRACT: The stable operation of first and second order Zero Crossing Digital Phase Locked Loop (ZCDPLL) is extended by using a Fixed Point Iteration (FPI) method with relaxation. The non-linear components of ZCDPLL such as sampler phase detector and Digital Controlled Oscillator (DCO) lead to unstable and chaotic operation when the filter gains are high. FPI will be used to stabilize the chaotic operation and consequently extend the lock range of the loop. The proposed stabilized loop can work in higher filter gains which are needed for faster signal acquisition.