Architecture of Ultra Low Power Micro Energy Harvester Using RF Signal for Health Care Monitoring System: A Review

Zulkifli, Farah Fatin; Sampe, Jahariah; Islam, Muhammad Shabiul; Mohamed, Mohd Ambri

doi:10.3844/ajassp.2015.335.344

Cited by 16 publications

(6 citation statements)

References 33 publications

(46 reference statements)

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“…The efficiency of an antenna is mostly determined by the antenna impedance and the converter circuit impedance (Zulkifli et al, 2015a;Sampe et al, 2016).…”

Section: Fig 2 Rf Energy Harvesting Systemmentioning

confidence: 99%

MEMS Based RF Energy Harvester for Battery-Less Remote Control: A Review

Yunus¹,

Sampe²,

Yunas³

et al. 2017

American Journal of Applied Sciences

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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.

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“…The efficiency of an antenna is mostly determined by the antenna impedance and the converter circuit impedance (Zulkifli et al, 2015a;Sampe et al, 2016).…”

Section: Fig 2 Rf Energy Harvesting Systemmentioning

confidence: 99%

MEMS Based RF Energy Harvester for Battery-Less Remote Control: A Review

Yunus¹,

Sampe²,

Yunas³

et al. 2017

American Journal of Applied Sciences

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“…The purpose is to compensate the input impedance so that a resonance can be achieved between the rectifier and the loop antenna for any given frequency and input impedance. Thereby, the RF energy harvester robustness can be improved with the advantage of the passive voltage boost obtained from the high-Q resonator [50,51].…”

Section: Proposed Hieh Block Designmentioning

confidence: 99%

Architecture of Micro Energy Harvesting Using Hybrid Input of RF, Thermal and Vibration for Semi-Active RFID Tag

Mohamad¹,

Sampe²,

Berhanuddin³

2017

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This research work presents a novel architecture of Hybrid Input Energy Harvester (HIEH) system for semi-active Radio Frequency Identification (RFID) tags. The proposed architecture consists of three input sources of energy which are radio frequency signal, thermal and vibration. The main purpose is to solve the semi-active RFID tags limited lifespan issues due to the need for batteries to power their circuitries. The focus will be on the rectifiers and DC-DC converter circuits with an ultra-low power design to ensure low power consumption in the system. The design architecture will be modelled and simulated using PSpice software, Verilog coding using Mentor Graphics and real-time verification using field-programmable gate array board before being implemented in a 0.13 µm CMOS technology. Our expectations of the results from this architecture are it can deliver 3.3 V of output voltage, 6.5 mW of output power and 90% of efficiency when all input sources are simultaneously harvested. The contribution of this work is it able to extend the lifetime of semi-active tag by supplying electrical energy continuously to the device. Thus, this will indirectly reduce the energy limitation problem, eliminate the dependency on batteries and make it possible to achieve a batteryless device.

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“…Several ambient energy sources for energy harvesting methods, such as temperature, light, radio frequency (RF) electromagnetic field, vibration, motion, electric and magnetic field, and so on, have been studied in the literature [ 7 , 8 , 9 ]. Based on the ambient energy sources, RF energy harvesting is preferred compared to other potential energy harvesting methods.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Micromachined Antenna Substrates Operating at 5 GHz for RF Energy Harvesting Applications

et al. 2019

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This paper investigates micromachined antenna performance operating at 5 GHz for radio frequency (RF) energy harvesting applications by comparing different substrate materials and fabrication modes. The research aims to discover appropriate antenna designs that can be integrated with the rectifier circuit and fabricated in a CMOS (Complementary Metal-Oxide Semiconductor)-compatible process approach. Therefore, the investigation involves the comparison of three different micromachined antenna substrate materials, including micromachined Si surface, micromachined Si bulk with air gaps, and micromachined glass-surface antenna, as well as conventional RT/Duroid-5880 (Rogers Corp., Chandler, AZ, USA)-based antenna as the reference. The characteristics of the antennas have been analysed using CST-MWS (CST MICROWAVE STUDIO®—High Frequency EM Simulation Tool). The results show that the Si-surface micromachined antenna does not meet the parameter requirement for RF antenna specification. However, by creating an air gap on the Si substrate using a micro-electromechanical system (MEMS) process, the antenna performance could be improved. On the other hand, the glass-based antenna presents a good S11 parameter, wide bandwidth, VSWR (Voltage Standing Wave Ratio) ≤ 2, omnidirectional radiation pattern and acceptable maximum gain of >5 dB. The measurement results on the fabricated glass-based antenna show good agreement with the simulation results. The study on the alternative antenna substrates and structures is especially useful for the development of integrated patch antennas for RF energy harvesting systems.

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Architecture of Ultra Low Power Micro Energy Harvester Using RF Signal for Health Care Monitoring System: A Review

Cited by 16 publications

References 33 publications

MEMS Based RF Energy Harvester for Battery-Less Remote Control: A Review

MEMS Based RF Energy Harvester for Battery-Less Remote Control: A Review

Architecture of Micro Energy Harvesting Using Hybrid Input of RF, Thermal and Vibration for Semi-Active RFID Tag

Investigation of Micromachined Antenna Substrates Operating at 5 GHz for RF Energy Harvesting Applications

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