1. Advance RF and Microwave Research Group (ARFMRG), Faculty of Electrical Engineering; Universiti Teknologi Malaysia, UTM Johor Bahru; Johor 81310 Malaysia
2. Computer Systems Engineering Group; Advanced Informatics School, Universiti Teknologi Malaysia, UTM Kuala Lumpur; Kuala Lumpur 54100 Malaysia
3. Wireless Communication Centre (WCC), UTM Kuala Lumpur; Kuala Lumpur 54100 Malaysia