Characterization of RF energy harvesting at 2.4 GHz

This paper presents a comprehensive study on RF energy harvesting process at a frequency of 2.4GHz using P21XXCSR-EVB evaluation board from Powercaset. The study is carried out by considering several types of antennas, varying distances from the transmitting source at different input and output power values. The maximum distance at which the harvesting kit can regulate the output voltage of 3.4V is 116 cm using 10dBi omnidirectional antenna. Further, the harvesting kit can produce an output power of 4mW using a 5dBi dipole antenna at 10 cm away from the source with a maximum circuit efficiency of 55%. The demonstration of energy harvesting is presented by powering an LED dimming circuit. This study could be helpful for researchers to design circuits and systems in RF energy harvesting area.