1. Department of Electrical, Electronic, and Systems Engineering; Universiti Kebangsaan Malaysia (UKM); Bangi Selangor 43600 Malaysia
2. Faculty of Engineering; Multimedia University, Persiaran Multimedia; Cyberjaya Selangor 63100 Malaysia
3. Institute of Space Science (ANGKASA); Universiti Kebangsaan Malaysia (UKM); Bangi Selangor 43600 Malaysia