S. Z.Z. Aljunid
Department of Electrical Engineering, Faculty of Engineering, University of Malaya
Malaysia

Syed Ziad Z. Aljunid.

Kuala Lumpur 50603

N. A.M. A. Ghafar
Department of Electrical Engineering, Faculty of Engineering, University of Malaya
Malaysia

Nurul Athirah M. A. Ghafar.

Kuala Lumpur 50603

B. A. Ahmad
Department of Communication Engineering, Al-Ma’moon University College
Iraq

Bilal A. Ahmad.

Al-Washash, 700921 Baghdad

R. Apsari
Department of Physics, Faculty of Science and Technology, Airlangga University
Indonesia

Retna Apsari.

Surabaya (60115)

S. W. Harun
Department of Electrical Engineering, Faculty of Engineering, University of Malaya; Department of Physics, Faculty of Science and Technology, Airlangga University
Malaysia

Sulaiman W. Harun.

Kuala Lumpur 50603, Malaysia; Surabaya (60115) Indonesia