John Kimionis received his Diploma degree and M.Sc. in Electronic and Computer Engineering from the Technical University of Crete, Greece in 2011 and 2013, respectively, where he was with the Telecom Lab. He is currently a Ph.D. candidate at the School of Electrical and Computer Engineering, Georgia Institute of Technology (Atlanta, GA) and a research assistant with the ATHENA group. His research interests are in the areas of backscatter radio and RFID, software defined radio for backscatter sensor networks, RF front-end design for wireless sensors, and additive manufacturing techniques. He has received fellowship awards for his undergraduate and graduate studies and was the recipient of the First Best Student Paper Award in the IEEE International Conference on RFID-Technologies and Applications (RFID-TA) 2014, Tampere, Finland, as well as the Second Best Student Paper Award in the IEEE International Conference on RFID-Technologies and Applications (RFID-TA) 2011, Sitges, Barcelona, Spain.