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