1. Centro de Inovações CSEM Brasil R. Sete, 2000 Belo Horizonte, Brazil
2. School of Electronic Engineering, Bangor University, Dean St, Bangor, Gwynedd, Wales
3. Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, PR-445, Km 380 Londrina, Brazil
4. James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, Scotland