1. Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, Malaysia
2. Department of Electronic Engineering, Faculty of Green Engineering and Technology, Universiti Tunku Abdul Rahman, Kampar, Perak, Malaysia
3. School of Engineering, Asia Pacific University of Technology & Innovation, Kuala Lumpur, Malaysia
4. State-Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macau, China