1. Department of Electrical Engineering, Faculty of EngineeringUniversity of Malaya Kuala Lumpur Malaysia
2. Faculty of Engineering TechnologyUniversiti Teknikal Malaysia Melaka Melaka Malaysia
3. Department of Physics, Faculty of ScienceUniversity of Malaya Kuala Lumpur Malaysia
4. Faculty of Electrical EngineeringUniversiti Teknikal Malaysia Melaka Melaka Malaysia
5. Faculty of Electrical EngineeringUniversiti Teknologi MARA Shah Alam Malaysia