1. School of Electrical and Computer Engineering,DECOM,Communications Department,Campinas,Brazil
2. School of Electrical and Computer Engineering,DSE,Dept. of Systems and Energy,Campinas,Brazil
3. Build Your Dreams Company - BYD,Dept. Research and Development - R&D,Campinas,Brazil
4. Institute of Physics Gleb Wataghin,DFA,Dept. of Applied Physics,Campinas,Brazil