A Polarization Conversion Coding Metasurface for Broadband Radar Cross-Section Reduction

Man, Zhenyong; Yang, Xiaoqing; Luo, Jiefang; Zhou, Tong; Li, Zhe; Lei, Xuexue; Chen, Junlong

doi:10.1007/s11664-020-08295-4

Cited by 7 publications

(4 citation statements)

References 19 publications

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“…It is observed that increasing the incident angle reduces the performance of the RCS reduction, particularly for TE incidence, as the unit cell was designed under the assumption of normal incidence. However, this is not a unique challenge for our design; it is also a limitation for other designs reported in the literature [1], [2], [3], [4], [5], [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17], [18].…”

Section: Validationmentioning

confidence: 99%

“…It is noticeable that in previous works using the polarization conversion technique [13], [14], [15], [16], [17], [18], the unit cell was supposed to have a diagonal symmetry so that xx = yy . In that case, (7a) is reduced to co = xx = yy .…”

Section: Theory Of Generalized Phase -Polarization Cancellationmentioning

confidence: 99%

“…It should be noted that using the polarization conversion technique [13], [14], [15], [16], [17], [18], the RCS reduction is only achieved in the frequency range where the unit cell (in a periodic array) rotates the polarization of the incident wave 90 degrees. However, FIGURE 5(a) shows that using the proposed method, for frequencies lower than 6 GHz, although RCS reduction is achieved (as shown in FIGURE 6), yy (and also xx ) has a larger value than −10 dB, indicating that the wave polarization is not rotated 90-degrees.…”

Section: Unit Cell Designmentioning

confidence: 99%

“…Utilizing polarization conversion surfaces is another recent method for deflecting the reflected wave from the targets leading to RCS reduction [13], [14], [15], [16], [17], [18]. In contrast to the phase cancellation approach, which employs two types of unit cells, this method uses only a single unit cell with a diagonal symmetry so that its array can spin the incident wave polarization 90 degrees.…”

Section: Introductionmentioning

confidence: 99%

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Generalized Phase-Polarization Cancellation for Broadband Radar Cross-Section Reduction

Shirmohammadkarimi,

Ghadimi,

Soleimani

et al. 2023

IEEE Access

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This study presents a novel approach to decrease the radar cross-section (RCS) by integrating and expanding the phase cancellation and polarization conversion methods. In this proposed technique, only one unit cell, akin to the polarization conversion method, is utilized. The RCS reduction surface is comprised of arrays of this unit cell; each array is rotated by 90 degrees in relation to its neighboring arrays. Unlike previous RCS reduction methods, which employed periodic arrangements of unit cells that either kept the polarization of the reflected wave unrotated or rotated it by 90 degrees, the proposed generalized method enables the unit cells to rotate the polarization of the reflected wave arbitrarily. This is achieved by eliminating the symmetry requirement in the unit cell design. The mathematical theory for the proposed RCS reduction method has been developed. To demonstrate the method's feasibility, a unit cell was designed using a pattern optimization method based on the pixelization of the cell surface, and a binary particle swarm optimization algorithm was employed as a proof of concept. A surface was formed by constructing 4 × 4 arrays of 7 × 7 designed unit cells, where each array was rotated 90 degrees relative to its side array. The measured results demonstrate a 10-dB monostatic RCS reduction bandwidth of 115%, from 2.8 GHz to 10.4 GHz, which is in excellent agreement with the bandwidth obtained using the developed theory.

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Section: Validationmentioning

confidence: 99%

Section: Theory Of Generalized Phase -Polarization Cancellationmentioning

confidence: 99%

Section: Unit Cell Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Generalized Phase-Polarization Cancellation for Broadband Radar Cross-Section Reduction

Shirmohammadkarimi,

Ghadimi,

Soleimani

et al. 2023

IEEE Access

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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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A metasurface with shared perforating holes for ultra-wideband RCS reduction

Guo

2023

Appl. Phys. A

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A Polarization Conversion Coding Metasurface for Broadband Radar Cross-Section Reduction

Cited by 7 publications

References 19 publications

Generalized Phase-Polarization Cancellation for Broadband Radar Cross-Section Reduction

Generalized Phase-Polarization Cancellation for Broadband Radar Cross-Section Reduction

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

A metasurface with shared perforating holes for ultra-wideband RCS reduction

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