Rectenna Systems for RF Energy Harvesting and Wireless Power Transfer

Aboualalaa, Mohamed; Elsadek, Hala

doi:10.5772/intechopen.89674

Cited by 6 publications

(3 citation statements)

References 51 publications

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“…PIN diode used in the proposed antenna is SPDT-PE7170 PIN Diode, and is modeled with the manufacturer’s specified diode equivalent values in the simulation. According to the datasheet [ 29 ], ON state of the PIN diode has 3.2MΩ resistance and OFF state has 1.2pF capacitance. The behavior of PIN diode shows as very effective Radio Frequency switch because of its intrinsic properties, which offers additional charge storage in between the two junctions.…”

Section: Methodsmentioning

confidence: 99%

“…Besides communicational applications of 5G, Reconfigurable antennas have received much attention in RF energy harvesting (rectenna) models owing to their selectivity for operating frequency, radiation pattern, and polarization [ 28 ]. A rectenna is a particular type of antenna that consists of four main components: antenna, precertification filter, rectifying circuit, and direct-current (DC) pass filter that rectifies incoming electromagnetic waves into DC [ 29 ]. From the last decades, the growth of wireless power transmission and satellite solar power transmission rectennas has gained prominence in implementing unique features and applications, such as radio frequency identification systems, sensing batteries or capacitors, wireless local area networks, WiMAX, cognitive radio systems, and in medical applications [ 30 ] to increase conversion efficiency.…”

Section: Introductionmentioning

confidence: 99%

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A novel single-feed hybrid reconfigurable microstrip patch antenna for 5G mobile communication and radio frequency energy harvesting applications at 28/38GHz

et al. 2022

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Reconfigurable antennas have received much attention in RF energy harvesting models owing to their selectivity for operating frequency and polarization. The characteristic of having frequency selectivity and polarization selectivity can be termed as frequency diversity and polarization diversity, respectively. This paper investigates a rectenna device with a new proposed topology in order to eliminate coupling between input and output lines and increase the rectification efficiency with the use of single feed hybrid reconfigurable antenna, switch between 28GHz and 38GHz frequency. Moreover, it is designed to charge a rechargeable battery of 1watt(W). The Reconfiguration mechanism is realized by electronically controlling different states of Switches. PIN Diode (as RLC Equivalent circuit) is used as a switch for ON/OFF states. This antenna mainly comprises rectangular shaped patches (28GHz and 38GHz) with Triango-Truncated edge at the corners. Eighteen PIN Diodes are placed symmetrically throughout the antenna presenting as, S1 & S2 for frequency reconfiguration, S3 to S6 & S7 to S10 connects Triango Truncated edge at the corners for polarization reconfiguration, and for radiation pattern reconfiguration at S11 to S14 & S15 to S18 has been used. The proposed antenna model is capable of simultaneously changing, the radiation patterns as clock and anti-clockwise directions at ±90-degree shift in E and H planes, circularly polarized (CP) states among, Linear Polarization (LP), Right Hand Circularly Polarization (RHCP), and Left Hand Circularly Polarization (LHCP). The current design describes using single antenna for energy harvesting and 5G mobile communication application. This would lead to higher output currents, leading to the ability to efficiently charge a wide variety of batteries. A fully functional prototype has been designed, fabricated and its compound reconfiguration characteristics have been validated for simulated and measured results. For validation of results, the experimental results and the simulation results from the proposed mathematical model were made into comparison, and excellent correlation between the measured and simulated results was obtained.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel single-feed hybrid reconfigurable microstrip patch antenna for 5G mobile communication and radio frequency energy harvesting applications at 28/38GHz

et al. 2022

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“…The performance of the rectenna improves with increasing PCE. For a rectenna with a load connected to its output, having a load resistance of R L , the PCE is given as [43];…”

Section: B Power Conversion Efficiency Of a Rectennamentioning

confidence: 99%

Deep Learning-Assisted Energy Prediction Modeling for Energy Harvesting in Wireless Cognitive Radio Devices

Umeonwuka,

Adejumobi,

Shongwe

2024

IEEE Access

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Cognitive radio is a technology that allows Secondary Users (SUs) to access vacant spectrum areas allocated to Primary Users (PUs) by dynamically adjusting their settings. However, the spectrum detection subsystem of SUs consumes battery power that could be used for transmission. This work aims to address the energy availability issue for cognitive radio devices by two methods: energy harvesting from the ambient environment and deep learning prediction of future energy levels. We compare three deep learning models: Long-Short Term Memory (LSTM), Convolutional Neural Network (CNN), and Convolutional Long-Short Term Memory (ConvLSTM) with three classic machine learning models: Artificial Neural Networks (ANN), Support Vector Regressor (SVR), and Extreme Gradient Boost (XGBoost). The results show that deep learning models outperform machine learning models across all datasets, with ConvLSTM being the best model with a Normalized Root Mean Squared Error (nRMSE) of 0.0632 and Mean Absolute Error (MAE) of 1.479, which are 8.80% and 9.04% better than the best machine learning model, ANN, with nRMSE of 0.0693 and MAE of 1.626.

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