N. Idayanti Research Center for Electronic and Telecommunication, LIPI Jl. Sangkuriang, Bandung
A. Nuruddin Faculty of Industrial Technology, Engineering Physics Study Program, ITB Jl. Ganesha No. 10, Bandung 40132
Suyatman Suyatman Faculty of Industrial Technology, Engineering Physics Study Program, ITB Jl. Ganesha No. 10, Bandung 40132