Small Loop Antenna and Rectenna for RF Energy Harvesting in FM Bands

This paper presents a DC output voltage-boosting antenna with high input impedance in wide frequency band for RF (radio frequency) energy harvesting of FM broadcasting signals. Target input power level of -20 dBm is used to design a loop antenna for DC output voltage-boosting. The RF energy harvesting on YNU campus provides 924 mV DC output for a single rectenna and 1.72 V DC output for twin rectennas by receiving several FM broadcasting wave simultaneously.