Sistema de captación de energía de RF basado en matriz de rectennas dipolos logarítmicas espirales

Abstract

The constant increase in the demand for energy production worldwide and its supply panorama in fields such as science and technology, more specifically in mobile devices, has encouraged the development of systems for capturing electromagnetic energy or also known as "Energy Harvesting" applied to RF, allowing it to be friendly to the environment, prior to investigations of the operation and use that occur through this technology. Therefore, this project shows the development, design, simulation and manufacture of a logarithmic spiral antenna array for the electromagnetic energy collection system independent of frequency, compact in microstrip technology, low cost and that works within a range of frequencies 1 to 4 GHz, for its design the CST Studio software was used and manufactured on the RF4 substrate with a thickness of 1.6 mm, a dielectric constant of 4.4 and an input impedance of 50 Ω. The resonator structure antenna with dimensions of 190 x 210 mm. The frequencies achieved with the rectenna matrix, since it offers good performance for electromagnetic energy harvesting applications that operate in standard frequencies such as GSM, Wi-Fi, LTE which are available in the environment and allows harvesting its energy at all times. To obtain electrical energy as part of the design of a frequency rectifier which is optimized with the application of the HSMS 286x series Schottky diode. In addition, its construction of the rectenna matrix was carried out based on the proposed design, then performance tests and validation of the prototype were carried out using the miniVNA Tiny spectrum verifier to finally carry out energy storage tests in different environments through Wi-Fi networks.