Abstract
The paper deals with the growing interest of energy harvesting systems due to great development in many new emerging technologies in electronics and telecommunication. The research focuses particularly about rectenna element comprises of antenna, impedance matching and rectifier. The rectenna is applied under Micro-Electromechanical-System (MEMS) technology design use in Radio Frequency (RF) energy harvester. MEMS is a technology of miniaturization that has been mostly adopted from integrated circuit industry together on a chip that are made using micro fabrication technique and applied for not only electrical systems. RF ambient source is considered over other ambient sources because RF can be broadcasted by various wireless systems in unlicensed frequency bands. However, the amount of energy captured from the ambient RF is extremely low which need improvements and more Direct Current (DC) voltage generated from RF energy harvester. For this motivation, a dual band MEMS rectenna is proposed for maximizing the efficiency. Power Management Unit (PMU) is interposed between MEMS rectenna and a load. The system is equipped with temporary energy storage and voltage regulator to produce optimum output voltage. The paper proposes a system that is designed and simulated using PSpice software and modeled in Mentor Graphic. The stated result from RF MEMS energy harvester is to provide functional conversion efficiency and reliable energy harvesting system to reach 1.5-3.0 V output voltage for operating frequency at 1.9 and 2.45 GHz from RF input power at -20 dBm with reveal approximately 100% improvement over other existing designs. The conceptual design can be the platform for innovative developments in recent technologies to achieve wireless transmission powered only by RF MEMS energy harvester.
Highlights
The combination of controlling and wireless communication has led to the development of Remote Control (RC)
A dual-band patch of narrowband antenna is preferred for the Radio Frequency (RF) energy harvesting system which is inspired by Li et al (2013; Bakkali et al, 2016)
This is due to its capability of achieving higher performance efficiency than single frequency RF harvester, in case conversion losses parameters are taken into account
Summary
The combination of controlling and wireless communication has led to the development of Remote Control (RC). Measurement and experimental results show RF to DC conversion efficiencies of 21 and 38% for correspondingly, -20 and -10 dBm low input powers with 10 k Ohm load resistance obtained at 850 MHz. Lakhal et al (2016) designed an efficient rectenna in the 2.45 GHz band for harvesting RF energy applications. A dual-band patch of narrowband antenna is preferred for the RF energy harvesting system which is inspired by Li et al (2013; Bakkali et al, 2016) This is due to its capability of achieving higher performance efficiency than single frequency RF harvester, in case conversion losses parameters are taken into account. RF MEMS rectenna for energy harvester not just a micro-fabrication design technology to provide a promising and convenient energy source solution for various low power electronic devices, and must work in to obtain functional efficiency. Discharging energy stored in temporary storage device, can supply instantaneous power to a particular load in case the RF ambient source from surroundings is insufficient
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