A multi-resonant meta-absorber as an electromagnetic energy harvester

Khan, Safiullah; Eibert, Thomas F.

doi:10.1109/apusncursinrsm.2017.8072588

Cited by 8 publications

(3 citation statements)

References 4 publications

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“…The paper presents the result of research on the most representative structure, well described in the literature, with a relatively narrow frequency band, but with a high absorption capability [24,25], i.e., the split ring resonator (SRR) cell proposed originally by [43,44]. The selection of the resonator unit cell topology was based on a review of the literature, and the decisive factor was the possibility of shaping a narrowband, selective absorption characteristic in the low RF range while maintaining the high geometric compactness of the structures.…”

Section: Selected Metamaterials Structuresmentioning

confidence: 99%

“…A potential solution to the above problems is absorption systems based on resonant metamaterials [7][8][9][10][11][12][13][14][15][16][17], i.e., special electromagnetic structures exhibiting unusual circuit-field properties in certain frequency bands. The miniaturization potential, the possibility of adjusting the geometry of metamaterials to the substrate on which they are to be installed (e.g., a car body, a roof or walls of a building, housing of electronic appliances), much higher absorption, additional beneficial properties and extensive research into the technology [5,8,9,[14][15][16][17][18][19][20][21][22][23][24][25][26][27] (mostly in the microwave spectrum) are important factors supporting the development of effective solutions for obtaining energy from the electromagnetic field using metamaterial absorbers. Table 1 shows a brief summary of selected parameters of EH systems based on rectennas and resonant metamaterials presented in the technical literature in order to compare their electromagnetic energy absorption capabilities.…”

Section: Introductionmentioning

confidence: 99%

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Metamaterial-Based Sub-Microwave Electromagnetic Field Energy Harvesting System

Nowak

2021

Energies

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This paper presents the comprehensive analysis of the sub-microwave, radio frequency band resonant metastructures’ electromagnetic properties with a particular emphasis on the possibility of their application in energy harvesting systems. Selected structures based on representative topologies of metamaterials have been implemented in the simulation environment. The models have been analyzed and their substitute average electromagnetic parameters (absorption, reflection, transmission and homogenized permeability coefficients) have been determined. On the basis of simulation research, prototypes of electromagnetic field two-dimensional absorbers have been manufactured and verified experimentally in the proposed test system. The absorber has been implemented as a component of the low-cost energy harvesting system with a high-frequency rectifier and a voltage multiplier, obtaining usable DC energy from the electromagnetic field in certain frequency bands. The energy efficiency of the system has been determined and the potential application in energy harvesting technology has been assessed.

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Section: Selected Metamaterials Structuresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metamaterial-Based Sub-Microwave Electromagnetic Field Energy Harvesting System

Nowak

2021

Energies

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“…The boundary conditions depend on the continuous tangential components of electric and magnetic fields across an interface between two dielectric media. Due to their rich EM field manipulation capabilities, metasurfaces could enable many incredible applications in the field of optics and nanophotonics, such as shielding [74]- [76], EH [57], [77]- [83], antennas [84]- [86], radomes, etc.…”

Section: Fundamentals Of Metasurfacesmentioning

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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Ultrathin dual-layer triple-band flexible microwave metamaterial absorber for energy harvesting applications

Kaur

Upadhyaya

Palandöken

et al. 2019

Int J RF Microw Comput Aided Eng

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An ultrathin dual-layer flexible metamaterial absorber with triple-band for RF energy harvesting applications has been reported in this article. The sub-wavelength unit cell of the proposed absorber is composed of six distinct concentric annular having outer circumference of ring and octagonal inner circumference. The metallic resonators are constructed from copper foil self-adhesive tape which are affixed on flexible neoprene rubber sheet terminated by metal ground plate. The proposed absorber prototype is ultrathin and compact with the thickness less than 0.037λ 0 and cell size less than 0.2λ 0 at the lower absorption frequency of 1.75 GHz. Flexible dual-layer absorber exhibits triple absorption peaks of 96.91%, 96.41% and 90.12% at 1.75 GHz, 2.17 GHz and 2.6 GHz with full width at half maximum (FWHM) bandwidth of about~6.5%. The RF performance of proposed absorber is numerically computed for different polarization and incidence angle variations. The absorption value is above 76% for the oblique incidence angle up to 45 in TE mode operation, whereas the absorption value is 94% for oblique incidence angle up to 60 in TM mode operation. The measured outcomes are in agreement with the numerically calculated results. The energy harvesting potential of the proposed absorber structure is numerically confirmed by the resulting improved RF absorption value in dependence to different resistive loading of the polarization insensitive unit cells. K E Y W O R D S energy harvesting, metamaterial, metamaterial absorber

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A multi-resonant meta-absorber as an electromagnetic energy harvester

Cited by 8 publications

References 4 publications

Metamaterial-Based Sub-Microwave Electromagnetic Field Energy Harvesting System

Metamaterial-Based Sub-Microwave Electromagnetic Field Energy Harvesting System

A Comprehensive Review of Metasurface Structures Suitable for RF Energy Harvesting

Ultrathin dual-layer triple-band flexible microwave metamaterial absorber for energy harvesting applications

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