Stacked Yagi-Uda Array for 2.45-GHz Wireless Energy Harvesting

Wireless energy harvesting is currently a popular topic in radiofrequency (RF) engineering. Electromagnetic (EM) energy coming from different kinds of sources has to be collected by the harvester and efficiently converted into dc power. Practical applications include wireless charging systems and dc powering of RF identification (RFID) chips. Space applications were also investigated. Therefore, the third Wireless Energy Harvesting Student Design Competition was organized during the 2014 IEEE Microwave Theory and Techniques Society International Microwave Symposium (IMS2014) in Tampa, Florida.