Multiband Ambient RF Energy Harvesting for Autonomous IoT Devices

Vu, Hong Son; Nguyen, Ngan; Ha‐Van, Nam; Seo, Chulhun; Le, Minh Thuy

doi:10.1109/lmwc.2020.3029869

Cited by 64 publications

(26 citation statements)

References 13 publications

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“…Usually, this system is user-friendly and can operate the process in the EMEH system easily. The system is developed based on maximum performance as maximum energy can be harvested from environmental sources [72,73]. However, the drawback of ATS in the EMEH system can work only when the ambient sources are available.…”

Section: Autonomous Sensor In Electromagnetic Energy Harvesting Systemsmentioning

confidence: 99%

Review of Power Converter Impact of Electromagnetic Energy Harvesting Circuits and Devices for Autonomous Sensor Applications

et al. 2021

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The demand for power is increasing due to the rapid growth of the population. Therefore, energy harvesting (EH) from ambient sources has become popular. The reduction of power consumption in modern wireless systems provides a basis for the replacement of batteries with the electromagnetic energy harvesting (EMEH) approach. This study presents a general review of the EMEH techniques for autonomous sensor (ATS) applications. Electromagnetic devices show great potential when used to power such ATS technologies or convert mechanical energy to electrical energy. As its power source, this stage harvests ambient energy and features a self-starting and self-powered process without the use of batteries. Therefore, it consumes low power and is highly stable for harvesting energy from the environment with low ambient energy sources. The review highlights EMEH circuits, low power EMEH devices, power electronic converters, and controllers utilized in numerous applications, and described their impacts on energy conservation, benefits, and limitation. This study ultimately aims to suggest a smart, low-voltage electronic circuit for a low-power sensor that harvests electromagnetic energy. This review also focuses on various issues and suggestions of future EMEH for low power autonomous sensors.

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Section: Autonomous Sensor In Electromagnetic Energy Harvesting Systemsmentioning

confidence: 99%

Review of Power Converter Impact of Electromagnetic Energy Harvesting Circuits and Devices for Autonomous Sensor Applications

et al. 2021

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“…The low RF power density limits the amount of RF power that antennas can receive, resulting in low RF-to-DC power conversion efficiency. To design a highly efficient rectenna, many solutions have been presented [4][5][6][7][8][9][10][11][12][13][14][15]. The first approach was to use a single-band antenna combined with a single-band rectifier [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…A recent approach using multiband antennas was presented in [8][9][10][11]. Multiband energy harvesting can improve the amount of harvested energy.…”

Section: Introductionmentioning

confidence: 99%

Multiband Ambient RF Energy Harvester with High Gain Wideband Circularly Polarized Antenna toward Self-Powered Wireless Sensors

Nguyễn

2021

Sensors

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In this work toward a sustainable operation of a self-powered wireless sensor, we investigated a multiband Wi-Fi/3G/4G/5G energy harvester based on a novel wideband circularly polarized antenna, a quadplexer, and rectifiers at four corresponding bands. This proposed antenna consisted of four sequentially rotated dual-dipoles, fed by a hybrid feeding network with equal amplitude and an incremental 90° phase delay. The feeding network was composed of three Wilkinson power dividers and Schiffman phase shifters. Based on the sequential rotation method, the antenna obtained a −10 dB reflection coefficient bandwidth of 71.2% from 1.4 GHz to 2.95 GHz and a 3 dB axial ratio (AR) bandwidth of 63.6%, from 1.5 GHz to 2.9 GHz. In addition, this antenna gain was higher than 6 dBi in a wide bandwidth from 1.65 GHz to 2.8 GHz, whereas the peak gain was 9.9 dBi. The quad-band rectifier yielded the maximum AC–DC conversion efficiency of 1.8 GHz and was 60% at −1 dBm input power, 2.1 GHz was 55% at 0 dBm, 2.45 GHz was 55% at −1 dBm, and 2.6 GHz was 54% at 0.5 dBm, respectively. The maximum RF–DC conversion efficiency using the wideband circularly polarized antenna was 27%, 26%, 25.5%, and 27.5% at −6 dBm of input power, respectively.

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“…The authors reported that the proposed system can harvest up to 6.6 times more power than the single 900 MHz frequency band. Finally, a multi-band rectenna operating in the frequency bands of 840 MHz, 1.86 GHz, 2.1 GHz, and 2.45 GHz was presented in [ 21 ]. The authors designed and fabricated a modified bow-tie antenna as the RF harvester of the proposed rectenna.…”

Section: Introductionmentioning

confidence: 99%

Triple-Band Single-Layer Rectenna for Outdoor RF Energy Harvesting Applications

Boursianis

Papadopoulou

Koulouridis

et al. 2021

Sensors

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A triple-band single-layer rectenna for outdoor RF energy applications is introduced in this paper. The proposed rectenna operates in the frequency bands of LoRa, GSM-1800, and UMTS-2100 networks. To obtain a triple-band operation, a modified E-shaped patch antenna is used. The receiving module (antenna) of the rectenna system is optimized in terms of its reflection coefficient to match the RF-to-DC rectifier. The final geometry of the proposed antenna is derived by the application of the Moth Search Algorithm and a commercial electromagnetic solver. The impedance matching network of the proposed system is obtained based on a three-step process, including the minimization of the reflection coefficient versus frequency, as well as the minimization of the reflection coefficient variations and the maximization of the DC output voltage versus RF input power. The proposed RF-to-DC rectifier is designed based on the Greinacher topology. The designed rectenna is fabricated on a single layer of FR-4 substrate. Measured results show that our proposed rectenna can harvest RF energy from outdoor (ambient and dedicated) sources with an efficiency of greater than 52%.

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Multiband Ambient RF Energy Harvesting for Autonomous IoT Devices

Cited by 64 publications

References 13 publications

Review of Power Converter Impact of Electromagnetic Energy Harvesting Circuits and Devices for Autonomous Sensor Applications

Review of Power Converter Impact of Electromagnetic Energy Harvesting Circuits and Devices for Autonomous Sensor Applications

Multiband Ambient RF Energy Harvester with High Gain Wideband Circularly Polarized Antenna toward Self-Powered Wireless Sensors

Triple-Band Single-Layer Rectenna for Outdoor RF Energy Harvesting Applications

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