1. School of Integrated Circuits and Electronics, Beijing Institute of Technology,Beijing,China,100081
2. University of Messina,Engineering Department,Messina,Italy,98166
3. Tangshan Research Institute of BIT,Tangshan,China,063000
4. University of Niš,Faculty of Electronic Engineering,Niš,Serbia
5. University of Messina,BIOMORF Department,Messina,Italy,98125