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Application of Memristor-Based Controller for Loop Filter Design in Charge-Pump Phase-Locked Loops |
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| Authors: | Yi-Bo Zhao Chi-Kong Tse Jiu-Chao Feng Ye-Cai Guo |
| Affiliation: | 1. Jiangsu Key Laboratory of Meteorological Observation and Information Processing, Nanjing University of Information Science & Technology, Nanjing, 210044, China 2. Department of Electronic and Information Engineering, Hong Kong Polytechnic University, Hunghom, Hong Kong, China 3. School of Electronic and Information Engineering, South China University of Technology, Guangzhou, 510641, China |
| Abstract: | In this work, a monotonic increasing piecewise-linear (PWL) memristor-based proportional-integral (PI) controller is analyzed. A periodic rectangular pulse current source is used as the input signal, and the proportionality constant of the PWL memristor-based PI controller is varied according to the amount of charge that passes through the memristor. A circuit is proposed to achieve zero net-charge injection for the memristor so that the memristance of the PWL memristor can be varied in the subsequent period. The proposed PWL memristor-based PI controller can be used in the design of the loop filter for the charge-pump phase-locked loop for achieving a faster dynamical response from an unlocked state to a locked state compared to conventional fixed proportional constant PI controllers. |
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