Manipulation of wave scattering by Fourier convolution operations with Pancharatnam-Berry coding metasurface

Jing, Xufeng; Tang, Xiaoyan; Bie, Xun; Luo, Tianzi; Gan, Haiyong; He, Yingwei; Li, Chenxia; Hong, Zhi

doi:10.1016/j.optlaseng.2021.106556

Cited by 30 publications

(9 citation statements)

References 65 publications

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“…However, there are only transmissive beams in the half space. Different from the existing metasurfaces (Li et al, 2015;Zhang et al, 2016;Han et al, 2018;Ding et al, 2019;Chen et al, 2020;Li et al, 2021c;Tang et al, 2021;Zhao et al, 2021;Cheng et al, 2022), this paper proposed a multifunctional coding metasurface based on the convolution theorem of patterns and the phase compensation principle. The experimental and simulated results verified the multifunctional coding metasurface with four LCP beams in the transmissive space and four RCP beams in the reflective space as the x-polarized incidence.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Coding Metasurface With Left and Right Circularly Polarized and Multiple Beams

Han

et al. 2022

Front. Mater.

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In this paper, a multifunctional coding metasurface (MCMS) has been proposed to realize dual-circularly polarized beams and beam focusing with transmission and reflection. The phase of transmissive wave is controlled by rotating the elements, and the corresponding element, which consists of two quadrate voids etched on a single layer substrate, is designed for the metasurface with Pancharatnam-Berry (PB) phase. The phase distribution of the circularly polarized four-beam is determined according to the convolution theorem of patterns and the phase compensation principle. In order to validate the proposed metasurface, the multifunctional meta-device is fabricated and measured to illustrate the four-beam with left circular polarization in transmissive space and the right circularly polarized four-beam in reflective space by MCMS with x-polarized incidence. The experimental results heavily agree with the simulated data. The MCMS has potential applications in wireless communications due to its low profile, compact, and lightweight features.

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Section: Introductionmentioning

confidence: 99%

Multifunctional Coding Metasurface With Left and Right Circularly Polarized and Multiple Beams

Han

et al. 2022

Front. Mater.

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“…Metasurface is a kind of two‐dimensional metamaterial with subwavelength thickness (Chen & Taylor, 2016), due to its simple structure, ease of fabrication, and less‐lossy characteristic, it has attracted much attention. In recent years, many different types of metasurfaces have been proposed, such as gradient metasurface (Kazemi at al., 2020; Ran at al., 2020; Sun at al., 2012), polarization conversion metasurface (PCM; Baena at al., 2017; Huang at al., 2017; Lin at al., 2019; Zhao at al., 2019) and coding metasurface (Jia at al., 2017; Su at al., 2016; Tian at al., 2020; Zhao at al., 2021). PCM can be used as a polarization converter.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, a right‐handed/left‐handed circularly polarized (RCP/LCP) wave will be converted to a LCP/RCP one after reflection on a conducting surface, however, based on a proper anisotropic metasurface, a CP‐maintaining metasurface can be proposed, which can keep the handedness of the reflected wave the same as that of the CP incident one (Lin at al., 2020). This kind of CP‐maintaining metasurface can be regarded as a reflective circular PCM (Huang at al., 2017), which is very useful in the design of reflective Pancharatnam‐Berry (PB) gradient metasurfaces (Kazemi at al., 2020; Ran at al., 2020) and PB coding metasurfaces (Tian at al., 2020; Zhao at al., 2021) because PB phase can only be generated in co‐polarized reflection and cross‐polarized transmission coefficients under CP incidence (Pancharatnam, 1956).…”

Section: Introductionmentioning

confidence: 99%

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Ultra‐Wideband and Polarization‐Independent RCS Reduction Based on Polarization Conversion Metasurface

et al. 2022

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In this work, an ultra‐wideband polarization conversion metasurface (PCM) is proposed. Because it is an anisotropic structure with a pair of mutually perpendicular symmetric axes u and v, and the phase difference between the reflection coefficients under u‐ and v‐polarized incidences is close to 180° in an ultra‐wide frequency range from 9.5 to 29.5 GHz, it can realize ultra‐wideband circular polarization (CP) maintaining reflection and make its co‐polarized reflection coefficient under CP incidence close to 1.0 in the ultra‐wide band 9.2–29.7 GHz. In addition, for any metasurface, when its unit cell structure is rotated by an angle ψ, almost ±2ψ Pancharatnam‐Berry (PB) phase will be generated in co‐polarized reflection coefficient under CP incidence. Thus, based on the proposed PCM, an ultra‐wideband Pancharatnam‐Berry (PB) 2‐dit coding metasurface is conveniently proposed. The simulation and experimental results show that the coding metasurface can achieve more than 10 dB radar cross section (RCS) reduction under normal incidence with arbitrary polarizations in the ultra‐wide frequency band 8.7–29.3 GHz with a relative bandwidth of 108.4%, in addition, when the incident angle is increased to 30°, the RCS reduction performance can be kept well, which shows that the proposed coding metasurface has good stealth performance under the detection of airborne radar, fire control radar and imaging radar working in X, Ku, and K bands, it is very practical.

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“…In addition, A righthanded/left-handed circularly polarized (RCP/ LCP) wave will be converted to a LCP/ RCP one after reflection on a conducting surface, however, based on a proper anisotropic or chiral metasurface, a CP-maintaining metasurface can be proposed, which can keep the handedness of the reflected wave the same as that of the CP incident one. [18][19][20][21] This kind of CP-maintaining metasurface can be regarded as a reflective circular polarization converter, [21] which is very useful in the design of reflective Pancharatnam-Berry (PB) gradient metasurfaces [22][23][24][25][26][27] and PB coding metasurfaces [28][29][30][31][32] because PB phase can only be generated in the copolarized reflected wave under CP incidence for a reflective metasurface. [33] The concept of coding metasurface was firstly proposed by Cui et al in 2014, [34] which consisted of several different types of elements arranged as a predesigned coding sequence.…”

Section: Introductionmentioning

confidence: 99%

An Ultra-Wideband Circular Polarization-Maintaining Metasurface and Its Application in RCS Reduction

Lin

Huang

et al. 2021

IEEE Access

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In this work, a circular polarized (CP) maintaining metasurface is proposed, which can realized ultra-wideband CP-maintaining reflection and make its co-polarization reflection coefficient under CP incidence close to 1.0 in the frequency range from 6.2 to 26.4 GHz. Because Pancharatnam-Berry (PB) phase can be generated in the co-polarized reflection coefficient under CP incidence by rotating its unit cell structure, a 2-bit PB coding metasurface for Radar Cross Section (RCS) reduction is further proposed based on the CP-maintaining metasurface. The simulated results show that the proposed PB coding metasurface has excellent performance in RCS reduction, compared with a pure metal plate with the same size, its RCS can be reduced more than10dB under arbitrary polarization normal incidences in the ultra-wide frequency band 6.2-26.5GHz with relative band of 124.1%. Finally, an effective experimental validation is carried out.

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Manipulation of wave scattering by Fourier convolution operations with Pancharatnam-Berry coding metasurface

Cited by 30 publications

References 65 publications

Multifunctional Coding Metasurface With Left and Right Circularly Polarized and Multiple Beams

Multifunctional Coding Metasurface With Left and Right Circularly Polarized and Multiple Beams

Ultra‐Wideband and Polarization‐Independent RCS Reduction Based on Polarization Conversion Metasurface

An Ultra-Wideband Circular Polarization-Maintaining Metasurface and Its Application in RCS Reduction

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