1. Kuwait College of Science and Technology,Electronics and Communication Engineering Department,Kuwait City,Kuwait
2. King Abdulaziz University,College of Science and Art,Physics Department,Rabigh,Saudi Arabia
3. University of Messina,Scienze Fisiche e Scienze Della Terra,Dipartimento di Scienze Matematiche e Informatiche,Messina,Italy
4. National Institute of Technology Silchar,Electronics and Communication,Engineering Department,Assam,India