He received the Laurea degree in electronic engineering and his Ph. D. in electronic and communication engineering from Politecnico di Torino, Turin, Italy. Roberto Quaglia is a researcher at the Centere for High Frequency Engineering at Cardiff University. Previously he worked for Huawei Technologies in Milano, Italy as a MMIC designer for millimeter-wave radios. He received the Laurea degree and his Ph. D. from Politecnico di Torino, Turin, Italy. Marco Pirola is an Associate Professor of electronics in the Electronics and Telecommunicaton Department, Politecnico di Tornio, Italy. He received his Ph.D. from Politecnico di Torino, Turin, Italy. He was previously a visiting researcher at the Hewlett Packcard Microwave Technology Division, Santa Rosa, CA.