Metamaterial Lensing Devices

Lv, Jiangtao; Zhou, Ming; Gu, Qiang; Jiang, Xiaoxiao; Ying, Yu; Si, Guangyuan

doi:10.3390/molecules24132460

Cited by 28 publications

(12 citation statements)

References 142 publications

(155 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Metamaterial (MTM), as an artificial medium, has several unusual features, such as negative (refractive index, permeability, and permittivity), making it appropriate for a variety of applications, including absorber 18 , bio sensing 19 , microwave imaging 20 , antennas 21 , metamaterial coding 22 , metamaterial lensing 23 , terahertz metamaterial 24 , and microwave devices like GPS5, WiMAX 25 .…”

Section: Introductionmentioning

confidence: 99%

Massive metamaterial system-loaded MIMO antenna array for 5G base stations

Al‐Bawri

Islam

et al. 2022

Sci Rep

View full text Add to dashboard Cite

An integrated massive multiple-input multiple-output (mMIMO) antenna system loaded with metamaterial (MTM) is proposed in this article for fifth-generation (5G) applications. Besides, achievement of duple negative (DNG) characteristics using a proposed compact complementary split-ring resonator (SRR), a broad epsilon negative metamaterial (ENG) with more than 1 GHz bandwidth (BW), and near-zero refractive index (NZRI) features are presented. The proposed mMIMO antenna consists of eight subarrays with three layers that operate in the 5G mind band at 3.5 GHz (3.40–3.65 GHz) with high port isolation between adjacent antenna elements compared to an antenna that does not use MTM. Each subarray has two patches on the top layer, while the middle and bottom layers have two categories of full and partial ground plans, respectively. Simulated, produced, and tested are 32 elements with a total volume of 184 × 340 × 1.575 mm3. The measured findings reveal that the sub-6 antenna has a better than 10 dB reflection coefficient (S11), a lower than 35 dB isolation, and a peak gain of 10.6 dBi for each subarray. Furthermore, the recommended antenna loaded with MTM has demonstrated good MIMO performance with an ECC of less than 0.0001, total efficiencies of more than 90%, more than 300 MHz bandwidth, and an overall gain of 19.5 dBi.

show abstract

Section: Introductionmentioning

confidence: 99%

Massive metamaterial system-loaded MIMO antenna array for 5G base stations

Al‐Bawri

Islam

et al. 2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Metamaterial, which consists of either negative permeability or negative permittivity can be classified as a single negative (SNG) metamaterial (Srinivasan et al 2019). The spread of metamaterial research, which revealed the MTMs unique characteristics such as negative permittivity (ε), negative permeability (µ) and negative refractive index (n), has led to a wide range of applications in microwave and optical regime such as reconfigurable antenna (Zhang et al 2019), satellite (Mao et al 2017), invisibility cloaking (Jing et al 2020), filters (Ahamed et al 2020) and superlenses (Lv et al 2019) etc. MTMs have recently originated with utilization in various frequency bands, as every frequency band has a diverse range of applications.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of wide bandwidth Quad ‘e’ mirror-shaped metamaterial for Wi-Fi and Satellite Applications

Ankit

Kishor

Sinha

2022

Preprint

View full text Add to dashboard Cite

In this paper, we report a novel design of wide bandwidth Quad ‘e’ mirror-shaped metamaterial (MTM) structure for Wi-Fi and Satellite Applications. Further, the geometrical parameters of the copper-based metamaterial on FR- 4 epoxy resin fiber substrate is optimized and analyzed for a triple-band operation in the frequency range of 0.1 GHz-16 GHz. The proposed design exhibits left-handed characteristics over the three (L, C and Ku) frequency bands in microwave regime. The electric field, magnetic field and surface current distribution of the proposed MTM unit has been studied at three resonance frequencies (𝑓𝑟) namely 1.4 GHz, 5.0 GHz and 14.8 GHz. The effective electromagnetic parameters for the MTM were calculated using the obtained Propagation (transmission and reflection) characteristics. The unit cell provides negative permittivity (𝜀𝑟 ) in the region 0.5-1 GHz and a broad negative permeability (𝜇𝑟 ) in the 9-16 GHz region. The structure exhibits a negative refractive index (𝜂𝑟 ) in the region 0.5-1 GHz, 3-3.5 GHz, and 9-12 GHz. The effects of dielectric materials, design parameters, resonator width (𝑤𝑟), substrate thickness (𝑡𝑠), middle gap width (r), and the influence of different metal conductors of unit cell on resonance frequencies were also investigated. The proposed design has an unprecedented effective medium ratio (EMR) value of 13.37, implying better effectiveness and compactness of the Quad ‘e’ mirror-shaped metamaterial. The designed structure could be extremely useful for design and development of compact wide bandwidth devices for Wi-Fi and satellite applications.

show abstract

“…The performance metamaterials are widely used in various fields due to their unique electromagnetic properties, such as metamaterial lenses [ 1 , 2 , 3 ], invisibility cloaks [ 4 , 5 ], surface sensors [ 6 , 7 , 8 , 9 ], wave absorbers [ 10 , 11 , 12 , 13 , 14 , 15 ], energy harvesters [ 16 ], etc. It is especially noteworthy that the energy crisis has brought new challenges and opportunities to all countries around the world [ 17 , 18 ], and solar energy has quickly won the favor of researchers because of its unique advantages.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Ultra-Broadband Metamaterial Perfect Absorber Based on Four-Corner Star Array

et al. 2021

View full text Add to dashboard Cite

In recent years, research on solar absorbers provides a significant breakthrough to solve the energy crisis. A perfect solar absorber based on a four-corner star array is designed and the absorption performance is analyzed numerically. The results show that the absorber reaches more than 90% of the full band in the range of 400–2000 nm. In particular, the absorption efficiency of the continuous more than 95% of the bandwidth reached 1391 nm, and the average absorption efficiency of the whole study band is more than 98%, and the loss of the solar spectrum only accounted for 2.7%. At the same time, the absorption efficiency can be adjusted by changing the geometric structure of the absorber. In addition, due to the perfect symmetry of the structure, it has an excellent insensitivity of the incident angle and polarization angle. In general, the proposed solar absorber has exciting prospects in solar energy collection and utilization, photothermal conversion and other related fields.

show abstract

Metamaterial Lensing Devices

Cited by 28 publications

References 142 publications

Massive metamaterial system-loaded MIMO antenna array for 5G base stations

Massive metamaterial system-loaded MIMO antenna array for 5G base stations

Design and Analysis of wide bandwidth Quad ‘e’ mirror-shaped metamaterial for Wi-Fi and Satellite Applications

Numerical Study of Ultra-Broadband Metamaterial Perfect Absorber Based on Four-Corner Star Array

Contact Info

Product

Resources

About