Electromagnetic Power Harvester Using Wide-Angle and Polarization-Insensitive Metasurfaces

Zhang, Xuanming; Liu, Haixia; Li, Long

doi:10.3390/app8040497

Cited by 43 publications

(15 citation statements)

References 17 publications

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“…One such example is a 5 x 5 element metasurface operating at 5.8 GHz [101]. Similarly, high energy harvesting efficiency, wide-angle incidence and polarization-insensitivity has been achieved using a 9 x 9 square-ring resonator element metasurface at 2.5 GHz [102], shown in Fig. 10.…”

Section: Multiple Performance Objectivesmentioning

confidence: 99%

A Review of Metasurfaces for Microwave Energy Transmission and Harvesting in Wireless Powered Networks

et al. 2021

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Wireless energy transmission and harvesting techniques have recently emerged as attractive solutions to realize wireless powered networks. By eliminating fundamental power constraints arising from the use of conventionally battery sources, wireless modes of energy transmission provide viable means to power wireless network devices away from the grid. Metasurfaces have emerged as key enablers for the use of microwave energy as a power source. Their unique abilities to tailor electromagnetic waves have motivated significant research interest into their use for power-focused microwave systems. This article provides an overview of progress in the development of metasurface implementations for microwave energy transmitters and energy harvesters. First, the paper provides a basic introduction to metasurfaces, after which it reviews research progress in metasurfaces for microwave energy transmission and harvesting. Also highlighted are key parameters by which the performance of such metasurface designs are characterized. In addition, an overview of studies on metasurfaces as reconfigurable intelligent surfaces in wireless networks supporting the simultaneous transmission of information and energy is presented. Finally, the paper highlights existing challenges, and explores future directions, including opportunities to control radio environments through ambiently energized reconfigurable intelligent surfaces in nextgeneration wireless networks.

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Section: Multiple Performance Objectivesmentioning

confidence: 99%

A Review of Metasurfaces for Microwave Energy Transmission and Harvesting in Wireless Powered Networks

et al. 2021

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“…A wideband, polarization-insensitive metasurface EH was built in [91] at 2.5 GHz (LTE/Wi-Fi). The metasurface unit cell involved a subwavelength electrical small square-ring resonator, as shown in Fig.…”

Section: A Metasurface-based Antenna For Rf Ehmentioning

confidence: 99%

A Comprehensive Review of Metasurface Structures Suitable for RF Energy Harvesting

et al. 2020

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Energy harvesting (EH) or scavenging is recognized as harvesting energy from ambient energy sources in the surrounding environment. This paper reports a literature review on radio frequency (RF) EH using different metasurface/metamaterial structures based on split-ring resonators (SRRs), electric inductive-capacitive (ELC) resonators, square-patch unit cells, square-ring unit cells, etc. The essential parameters in rectifying antenna (rectenna) design are included, such as receiving antenna efficiency, conversion efficiency, dimensions, supporting substrate properties, frequency band, and overall performance, etc. It is noted that rectenna design using conventional antennas such as microstrip antennas, monopole antennas, slot antennas, dielectric resonator antennas, etc. suffers from low power conversion efficiency with larger size. To overcome the above-mentioned constraints and enhance the conversion efficiency with smaller size, metasurface/metamaterial structures are used as EH collectors. An introduction to EH is discussed, followed by an overview of energy sources in the ambient environment. Several hypothetical and experimental studies on metasurface-based EH systems are summarized.INDEX TERMS Metasurface, metamaterial, split-ring resonator, conversion power efficiency, RF energy harvesting, rectenna.

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“…A power amplifier, a voltage doubler, a power combiner, and impedance matching techniques were developed to compromise the different input power levels, thereby increasing the RF-DC conversion efficiency [11][12][13][14][15][16]. Multiple-band, three-dimensional, wide-angle structures were studied to increase usability and antenna gain in various circumstances [17][18][19][20][21]. To reduce the connection loss in the receiver system, a rectenna, composed of a receiving antenna and a rectifying circuit on the front-side and back-side of a single PCB board, respectively, is developed.…”

Section: Introductionmentioning

confidence: 99%

Extendable Array Rectenna for a Microwave Wireless Power Transfer System

et al. 2021

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A rectenna is adopted in a microwave-based wireless power transfer system to rectify the received RF to DC power. Each rectenna includes a DC-DC converter at the DC output port to ensure a stable power supply and a Schottky diode for the DC-combining network. The results demonstrate that the RF-DC conversion efficiencies of the rectifier circuit and 4 × 1 rectenna were 71% and 71.2% when the unit-cell RF input level was 19 dBm and 19.6 dBm. The DC output levels of a 4 × 8 rectenna with and without the DC-DC converter were 28 V and 30 V when the unit-cell RF input level was 20.2 dBm. The RF-DC conversion efficiency was measured as 52.6% and 59.9% with and without the DC-DC converter, respectively. The Schottky diode combined with the D-DC C converter at the DC output port exhibits an increase in the DC power combining level, making it suitable for an extendable array rectenna system.

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Electromagnetic Power Harvester Using Wide-Angle and Polarization-Insensitive Metasurfaces

Cited by 43 publications

References 17 publications

A Review of Metasurfaces for Microwave Energy Transmission and Harvesting in Wireless Powered Networks

A Review of Metasurfaces for Microwave Energy Transmission and Harvesting in Wireless Powered Networks

A Comprehensive Review of Metasurface Structures Suitable for RF Energy Harvesting

Extendable Array Rectenna for a Microwave Wireless Power Transfer System

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