Transparent and flexible broadband absorber for the sub-6G band of 5G mobile communication

Wu, Yanghui; Wang, Junjie; Lai, Senfeng; Zhu, Xiaobo

doi:10.1364/ome.8.003351

Cited by 41 publications

(13 citation statements)

References 20 publications

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“…The MIIT of China officially announced the 2.5/2.6 (B41/N41) GHz 3.3–3.6 GHz and 4.8–5 GHz frequency bands. The maximum bandwidth requirement for operating at this frequency is 40–100 MHz [ 23 , 24 , 25 ]. Therefore, there is a need to design a metamaterial absorber (MMA) to operate precisely at this frequency.…”

Section: Introductionmentioning

confidence: 99%

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Triple-Band Square Split-Ring Resonator Metamaterial Absorber Design with High Effective Medium Ratio for 5G Sub-6 GHz Applications

et al. 2023

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This article proposes a square split-ring resonator (SSRR) metamaterial absorber (MMA) for sub-6 GHz application. The unit cell of the MMA was designed and fabricated on commercially available low-cost FR-4 substrate material with a dielectric constant o 4.3. The higher effective medium ratio (EMR) of the designed unit cell shows the compactness of the MMA. The dimension of the unit cell is 9.5 × 9.5 × 1.6 mm3, which consists of two split rings and two arms with outer SSRR. The proposed MMA operates at 2.5 GHz, 4.9 GHz, and 6 GHz frequency bands with a 90% absorption peak and shows a single negative metamaterial property. The E-field, H-field, and surface current are also explored in support of absorption analysis. Moreover, the equivalent circuit model of the proposed MMA is modelled and simulated to validate the resonance behavior of the MMA structure. Finally, the proposed MMA can be used for the specific frequency bands of 5G applications such as signal absorption, crowdsensing, SAR reduction, etc.

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Section: Introductionmentioning

confidence: 99%

“…This random absorption will change the device’s efficiency. In [ 24 , 27 ], thick multi-layer substrate MMAs for ultra-width absorption are presented, which operate at a 3.2–11 GHz and 2.2–5.83 GHz frequency, respectively. A broadband sectional resonator base MMA is presented in [ 28 ] for a 7.18–8.8 GHz frequency.…”

Section: Introductionmentioning

confidence: 99%

Triple-Band Square Split-Ring Resonator Metamaterial Absorber Design with High Effective Medium Ratio for 5G Sub-6 GHz Applications

et al. 2023

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“…Novel metamaterial absorbers (MAs), which work on the principal of resonance, have been explored for use with wireless communication devices (emitters, filters, sensors, photodetectors, photovoltaic solar cells, and infrared camouflage) [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 ]. Significant work on MA designs is available in the literature for microwave, terahertz, visible, and ultraviolet frequencies [ 13 , 14 , 15 , 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

A Novel Meander Line Metamaterial Absorber Operating at 24 GHz and 28 GHz for the 5G Applications

Naqvi

Baqir

Gourley

et al. 2022

Sensors

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Fifth generation (5G) communication systems deploy a massive MIMO technique to enhance gain and spatial multiplexing in arrays of 16 to 128 antennas. In these arrays, it is critical to isolate the adjacent antennas to prevent unwanted interaction between them. Fifth generation absorbers, in this regard, are the recent interest of many researchers nowadays. The authors present a dual-band novel metamaterial-based 5G absorber. The absorber operates at 24 GHz and 28 GHz and is composed of symmetric meander lines connected through a transmission line. An analytical model used to calculate the total number of required meander lines to design the absorber is delineated. The analytical model is based on the total inductance offered by the meander line structure in an impedance-matched electronic circuit. The proposed absorber works on the principal of resonance and absorbs two 5G bands (24 GHz and 28 GHz). A complete angular stability analysis was carried out prior to experiments for both transverse electric (TE) and transverse magnetic (TM) polarizations. Further, the resonance conditions are altered by changing the substrate thickness and incidence angle of the incident fields to demonstrate the functionality of the absorber. The comparison between simulated and measured results shows that such an absorber would be a strong candidate for the absorption in millimetre-wave array antennas, where elements are placed in proximity within compact 5G devices.

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“…In recent years, the OTMAs based on different material systems have drawn more attentions from researchers [11][12][13]. Compared with the traditional opaque MMA, OTMA can be applied to the occasions that require high transparency such as the window glass of stealth armament and photovoltaics [14][15][16][17]. In 2014, Taehee Jang et al [18] used an Al wire gird to construct the first OTMA to achieve more than 90% absorptivity covering a wide band from 5.8 to 12.2 GHz, the optical transmittance is over 62%.…”

Section: Introductionmentioning

confidence: 99%

Composite structure-based transparent ultra-broadband metamaterial absorber with multi-applications

Liu

Zhang

Duan

et al. 2020

Mater. Res. Express

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In this paper, an approach is proposed to realize optically transparent metamaterial absorber (OTMA) with ultra-broadband absorption properties by using composite resonant structure. The indium tin oxide (ITO) resistive film is used to construct the resonant structure to induce high ohmic loss and broaden the bandwidth of the resonances, thus achieves more than 90% absorptivity in the wide bandwidth of 8-30.3 GHz, which can cover the X and Ku bands of the airborne and surveillance radar signal frequencies. The novelty of designed structure lies in the properties of larger absorption bandwidth (covering X, Ku, K and part of Ka bands), lower thickness, and absorption capacity over a wide range of incident angles. Moreover, by replacing the intermediate air spacer with polydimethylsiloxane (PDMS) and polymethyl methacrylate (PMMA) dielectrics, the OTMAs that can be used for conformal applications and rigid window glass of stealth armament are designed. This strategy provides more flexibility for the applications of broadband OTMA in different occasions, and has potential application prospects in radar stealth system, EM shielding and transparent RF equipment fields. The average optical transmittance of the whole structure in the visible light range exceeds 78%.

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Transparent and flexible broadband absorber for the sub-6G band of 5G mobile communication

Cited by 41 publications

References 20 publications

Triple-Band Square Split-Ring Resonator Metamaterial Absorber Design with High Effective Medium Ratio for 5G Sub-6 GHz Applications

Triple-Band Square Split-Ring Resonator Metamaterial Absorber Design with High Effective Medium Ratio for 5G Sub-6 GHz Applications

A Novel Meander Line Metamaterial Absorber Operating at 24 GHz and 28 GHz for the 5G Applications

Composite structure-based transparent ultra-broadband metamaterial absorber with multi-applications

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