A 2.45 GHz Rectenna System for Far-Field Wireless Power Transfer / Energy Harvesting

In this paper, a rectenna circuit has been proposed for wireless power transfer/ energy harvesting at 2.45 GHz using a four element microstrip antenna array. A filter has been used at the antenna feed to suppress the spurious responses of the array. The antenna has been connected with a matched rectifier to convert the received RF power to DC voltage. The measured maximum output voltage of the rectenna is 1.24 V for 6 dBm source power.