RCS Reduction on Patterned Graphene-Based Transparent Flexible Metasurface Absorber

Fu, Changfeng; Zhang, Lei; Liu, Lijun; Dong, Shaohua; Yu, Weijun; Han, Lianfu

doi:10.1109/tap.2022.3232744

Cited by 44 publications

(8 citation statements)

References 25 publications

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“…As shown in Figure 3a and 4a, r xy = r yx and r yy = r xx . According to Equation (7), it can be inferred that PCR x = PCR y .…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Polarization, one of the most basic characteristics of electromagnetic (EM) waves, refers to the oscillation direction of the electric field in the plane perpendicular to the propagation direction. [1][2][3] The polarization converter can manipulate various polarization states, which have important applications in satellite communication, [4,5] EM stealth, [6,7] antenna design, and beam steering. [8] Conventional polarization manipulation mainly uses natural materials such as twisted nematic liquid crystals by utilizing the Faraday effect.…”

Section: Introductionmentioning

confidence: 99%

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A Tunable Dual‐Band Flexible Polarization Converter Based on Vanadium Dioxide Reflective Metasurface

Fu,

Zhang,

Zhang

et al. 2023

Physica Status Solidi (a)

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A flexible dual‐band efficient polarization converter is realized by both coupled mode theory (CMT) analysis and numerical simulation in the microwave regime, using a four‐layered reflective metasurface. The proposed structure can convert linearly polarized electromagnetic (EM) waves into their orthogonal components in the two sidebands and a specular reﬂection performance in the central frequency band. The polarization conversion ratio(PCR) and operating bandwidth of dual‐band can be dynamically modulated by the introduction of vanadium dioxide(VO2). Simulation results show that the proposed metasurface can achieve linear polarization conversion in 8.17‐12.87 GHz and 14.63‐18.92 GHz in the insulating phase. PCRs of the dual‐band are 97.06% and 98.13%, the corresponding relative bandwidths (RB) are 44.68% and 25.58%, respectively. In the metallic phase, the PCRs in 6.81‐13.95 GHz and 16.23‐18.16 GHz are 91.12% (RB=68.79%) and 96.92% (RB=11.22%). The analyses of the phase difference (u‐v coordinate system) and the surface current are given to explain the mechanisms of dual‐band and high PCR. The simulation results are in good agreement with those of CMT. Moreover, the structure has a robust response to the oblique incidence angle (up to 30°) and has polarization insensitivity. The proposed metasurface has great potential applications in antenna radiation, biosensing and stealth technology.This article is protected by copyright. All rights reserved.

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“…As shown in Figure 3a and 4a, r xy = r yx and r yy = r xx . According to Equation (7), it can be inferred that PCR x = PCR y .…”

Section: Simulation Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Tunable Dual‐Band Flexible Polarization Converter Based on Vanadium Dioxide Reflective Metasurface

Fu,

Zhang,

Zhang

et al. 2023

Physica Status Solidi (a)

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“…Lowering the radar cross section (RCS) of military applications is a key component of stealth technology, which is used to evade detection by hostile radar [7,8]. Multilayer structures or frequency reconfigurable lumped elements are commonly used in the development of MSA for RCS reduction in broadband [9][10][11][12][13]. However, the majority of MSA investigations on RCS reduction are limited to rigid structures and the topic of flexibility is rarely addressed [14,15].…”

Section: Introductionmentioning

confidence: 99%

Transparent conformal metasurface absorber for ultrawideband radar cross section reduction

Khan,

Majeed,

Zahra

et al. 2024

J. Phys. D: Appl. Phys.

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Flexible metasurface based absorbers have gained significant importance in recent years due to their possible use in non-planar radar stealth applications, however, their narrow bandwidth and insensitivity to incidence angles limit their potential use. In this work, we present an ultrawideband and angular insensitive metasurface absorber based on indium tin oxide (ITO), polyethyleneterephthalate (PET), and polyvinyl chloride (PVC), that is both transparent and flexible. Broad-spectrum absorption can be maximized by using ITO with modest sheet resistance upon interaction with electromagnetic (EM) waves. To further validate the absorption performance, the RCS characteristics are investigated. The results indicate that over 10 dB RCS reduction is realized across an ultra-wide frequency range of 13.30– 39.76 GHz, with relative bandwidth up to 100% for planar metasurface under linearly (LP) and circularly (CP) polarized incidence EM waves. Furthermore, the RCS reduction performance of a metasurface is well maintained in the abovementioned frequency band when it is bent with various bending angles. The proposed metasurface is a promising contender for practical applications in microwave stealth technology due to its additional advantages of visible transparency, mechanical flexibility, low profile, outstanding angle stability, and polarization insensitivity.

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“…The absorption response is obtained by changing the thickness of substrate, ground plane and double split-ring resonator metasurface. A patterned graphene based metasurface absorber with sandwich structure has been presented [21] for EM stealth in microwave band. A graphene based tunable metamaterial absorber has been presented [22] with dual absorption peaks at 10.96THz and 12.71THz for infrared, filter, and terahertz detection.…”

Section: Introductionmentioning

confidence: 99%

Tunable Wideband Cylindrical Dielectric Resonator Inspired Metasurface Absorber for Medical Sensing Applications

Saxena¹,

Chintakindi²,

Vennu³

et al. 2023

Preprint

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In this article, two elliptical-ovel-shaped cylindrical dielectric resonator based wideband Graphene inspired reconfigurable metasurface absorber is designed on diffused quartz substrate having a relative permittivity of 3.75 and conductivity 2200Kg/m3 with height of 25μm. This metasurface having gold plated ground in microstrip with 5μm which is essential by calculating skin depth at 2.0THz frequency. Two elliptical ovel shaped patches with Graphene plated having built in potential varies 0-2.5eV and relaxation time 1.0ps at 290oK. By changing the relaxation time of Graphene 0.1ps-0.3ps its resonance frequency also varies i.e., reconfigurable property they provide without adding any active i.e., PIN diode components. The proposed MS is designed having a dimension of 100×100μm2 is designed on a microstrip. This MS works in the range of 1.6-2.38THz having more than 90% absorbance with two transmission zero at 2.1THz and 2.3THz having high Q ˃ 50 which is used to determine the sensitivity where the proposed MS used as a sensor to determine hemoglobin (Blood Glucose level) and urine (Uric acid) by changing their refractive index from 1.34-1.43. Maximum sensitivity achieved at 2000GHz/RIU and average sensitivity for hemoglobin and urine sensing achieved 833.33GHz/RIU, FOM-8.33 and 4277.7733GHz/RIU, FOM-555.55 respectively.

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RCS Reduction on Patterned Graphene-Based Transparent Flexible Metasurface Absorber

Cited by 44 publications

References 25 publications

A Tunable Dual‐Band Flexible Polarization Converter Based on Vanadium Dioxide Reflective Metasurface

A Tunable Dual‐Band Flexible Polarization Converter Based on Vanadium Dioxide Reflective Metasurface

Transparent conformal metasurface absorber for ultrawideband radar cross section reduction

Tunable Wideband Cylindrical Dielectric Resonator Inspired Metasurface Absorber for Medical Sensing Applications

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