Design of RF Energy Harvester for 3.5 GHz

The process of capturing and transforming electromagnetic waves into useful electrical power is known as radio frequency (RF) energy harvesting used in wearable technology, IoT, remote sensing, and various other applications where changing batteries is difficult. This research proposes a unique radio frequency energy harvester operating in the n78 (3.5 GHz) 5G frequency spectrum. The circuit employs a Delon Voltage Rectifier as a rectifier multiplier, and the Schottky Diode HSMS-2852 is utilized to operate as a rectifier. LC impedance matching is used to enhance the harvester's circuit performance, such as conversion effectiveness and resultant voltage. The rectifier is simulated with the Advanced Design System (ADS) software. The rectifier exhibits optimal performance at 1.5 kΩ load impedance,. The model's results show a maximum efficiency of 44.54% and a resultant voltage of 1.16 V with 10 dBm RF power at 3.5 GHz input frequency.