Ultrawide‐Angle Ultralow‐Reflection Phenomenon for Transverse Electric Mode in Anisotropic Metasurface

Lv, Qihao; Jin, Cheng; Zhang, Binchao; Yin, Liyuan; Liu, Shuo; Tian, Buning; Cui, Tie Jun

doi:10.1002/adom.202102400

Cited by 11 publications

(7 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Metasurface layer number [2] Single 𝜃: 0-80°; ϕ = 0°0% 3 [11] Single 𝜃: 0-60°; ϕ = 0°78% (peak) 2 [12] Single 𝜃: 0-80°; ϕ = 0°83% (peak) 2…”

Section: Incident Angle Optical Transparencymentioning

confidence: 99%

“…However, owing to the impedance mismatch, the transmission efficiency of the transverse‐electric (TE) mode deteriorates rapidly when the incident angle increases, which severely restricts the quality of indoor‐to‐outdoor wireless communication channels. [ 2 ] Hence, the way to enable the glass to maintain wide‐angle high radio‐frequency transmission (WHRT) in multiple frequencies and multiple polarizations attracts much attention from both industry and academia.…”

Section: Introductionmentioning

confidence: 99%

“…Previously, metasurface technology was used to improve the radio‐frequency (RF) transmission efficiency of substrates. [ 2,11–17 ] However, some designs are single‐polarized and only improve the transmission efficiency of TE‐polarized waves without considering the TM polarization. [ 2,14,15 ] In ref.…”

Section: Introductionmentioning

confidence: 99%

“…[ 2,11–17 ] However, some designs are single‐polarized and only improve the transmission efficiency of TE‐polarized waves without considering the TM polarization. [ 2,14,15 ] In ref. [17], the single‐fold symmetry the metasurface structure may suffer from severe polarization mismatch in real communication scenarios.…”

Section: Introductionmentioning

confidence: 99%

“…We remark that the structures with multiple layers and metallic vias are not applicable due to the glass substrates. [2,[30][31][32][33] In this work, an optically transparent metasurface is proposed to achieve WHRT for dual bands and dual polarizations. The designed metasurface is composed of a normal glass plate attached with an ultrathin film fabricated by the flexible printed circuit (FPC) technology.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Optically Transparent Metasurface with High RF Transmittance and Wide‐Angle Stability for Dual Bands and Dual Polarizations

Jiang

Liang

et al. 2023

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

Glass windows are an important part of indoor‐to‐outdoor wireless communication channels, but the transmission loss of the normal glass limits the quality of the radio frequency (RF) signals, especially for the transverse‐electric (TE) polarized waves incident at large angles due to the impendence mismatch. Although some design methods for wide‐angle high RF transmission (WHRT) have been proposed recently, they can only work in a single frequency band. Here, an optically transparent metasurface is presented to realize high RF transmissions for dual polarizations in dual bands (2.2–3.2 and 4.4–5.2 GHz) and wide incidence angles (0–80°). The central frequencies of the two bands can be tuned independently by changing the structural parameters. A theory based on the transmission line (TL) model is proposed to explain the mechanism of the design, and a prototype is fabricated by using flexible printed circuit technology. The measured results of the prototype have good agreement with numerical calculations and full‐wave simulations. The design is expected to be beneficial to improve the quality of wireless signals in 5G systems.

show abstract

“…Metasurface layer number [2] Single 𝜃: 0-80°; ϕ = 0°0% 3 [11] Single 𝜃: 0-60°; ϕ = 0°78% (peak) 2 [12] Single 𝜃: 0-80°; ϕ = 0°83% (peak) 2…”

Section: Incident Angle Optical Transparencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Optically Transparent Metasurface with High RF Transmittance and Wide‐Angle Stability for Dual Bands and Dual Polarizations

Jiang

Liang

et al. 2023

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

show abstract

Dielectric metamaterials with effective self-duality and full-polarization omnidirectional brewster effect

Luo,

Zhang

et al. 2024

Light Sci Appl

View full text Add to dashboard Cite

Conventional dielectric solid materials, both natural and artificial, lack electromagnetic self-duality and thus require additional coatings to achieve impedance matching with free space. Here, we present a class of dielectric metamaterials that are effectively self-dual and vacuum-like, thereby exhibiting full-polarization omnidirectional impedance matching as an unusual Brewster effect extended across all incident angles and polarizations. With both birefringence and reflection eliminated regardless of wavefront and polarization, such anisotropic metamaterials could establish the electromagnetic equivalence with “stretched free space” in transformation optics, as substantiated through full-wave simulations and microwave experiments. Our findings open a practical pathway for realizing unprecedented polarization-independence and omnidirectional impedance-matching characteristics in pure dielectric solids.

show abstract

Full-parameter omnidirectional transformation optical devices

Yuan

Luo

Zhang

et al. 2023

National Science Review

View full text Add to dashboard Cite

Transformation optics (TO) provides an unprecedented technique to control electromagnetic (EM) waves by engineering the constitutive parameters of the surrounding medium through a proper spatial transformation. In general, ideal transformation optical devices require simultaneous electric and magnetic responses along all three dimensions. To ease the practical implementation, previous studies usually made use of reduced parameters or other simplified approaches, which inevitably introduce extra reflection or unwanted phase shift. Up to today, experimental realizations of full-parameter transformation optical devices in free space are still quite limited. Here, a general design strategy is proposed to solve this problem. As a specific example, a full-parameter spatial-compression TO medium with constitutive parameters taking the diagonal form diag(a, a, 1/a) for the TM wave incidence was designed and realized experimentally. Such spatial-compression TO media were then applied to the implementation of an ideal omnidirectional invisibility cloak capable of concealing a large-scale object over a wide range of illumination angles. Both the simulation and experiment confirm that the cloak allows for nearly unity transmission of EM waves in the forward direction without introducing extra scattering or phase shift. This work constitutes an important stepping stone for future practical implementation of arbitrary ideal transformation optical devices.

show abstract

Ultrawide‐Angle Ultralow‐Reflection Phenomenon for Transverse Electric Mode in Anisotropic Metasurface

Cited by 11 publications

References 43 publications

Optically Transparent Metasurface with High RF Transmittance and Wide‐Angle Stability for Dual Bands and Dual Polarizations

Optically Transparent Metasurface with High RF Transmittance and Wide‐Angle Stability for Dual Bands and Dual Polarizations

Dielectric metamaterials with effective self-duality and full-polarization omnidirectional brewster effect

Full-parameter omnidirectional transformation optical devices

Contact Info

Product

Resources

About