Studi Literatur Energi Harvesting Dengan Sumber Frekuensi Radio
Literature Study Of Harvesting Energy With Resources Radio Frequency
Energy harvesting is a process of harvesting energy from external sources such as solar, heat, wind and electromagnetic waves or radio frequencies. Energy harvesting research needs to be developed because the use of non-renewable energy is increasingly limited. The use of radio frequency (RF) as a source of energy for harvesting is an effort to generate environmentally friendly energy. This is due to the increasing use of telecommunications technology. Various studies have been carried out with the acquisition of RF from various telecommunications signals and broadcast media (AM/FM, TV/DTV, GSM signals, WiFi signals). This study literature aims to know the general description of harvesting energy, especially those originating from radio / RF frequencies. A simple harvesting energy harvesting system consists of an antenna and a voltage rectifier circuit. The antennas used for RF energy harvesting have different designs according to the type of signal captured, including using periodic log antennas, archimedean spiral antennas, patch antennas, dipole patch antennas, and Vivaldi antennas. The energy yield obtained from the energy harvesting process with radiofrequency sources tends to be small in the milliwatt scale (1.17 µW / cm2 - 20VDC) depending on the type of antenna and radio frequency used (0.3 - 27.5 GHz) and can be applied to low power electronic devices.