Energy Harvesting From Television Frequency: Case Study of Rectifying Antennas

Abstract

Various research trends have tended to investigate the viability of powering these circuits using either a dedicated RF source from television frequencies (TF) or free energy harvested from ambient electromagnetic space due to the rapid development of wireless systems and demands for low-power integrated electronic circuits. In order to enable battery-free sustainable wireless networks, radio frequency energy harvesting (RFEH) and radiative wireless power transfer (WPT) have gained a lot of attention. Rectenna is primarily a combination of a receiving antenna and a rectifier circuit used to convert RF energy into usable DC electrical energy. The foundation of WPT and RFEH systems, rectifying antennas (rectenna), play a crucial role in the quantity of direct current power delivered to the load. The radiation to AC harvesting efficiency of the rectenna directly affects the gathered power, which can vary by orders of magnitude. The television frequency in the study area is taken into account in this essay so that it can be converted to usable dc voltages and currents.