Simple design of a wideband and wide-angle reflective linear polarization converter based on crescent-shaped metamaterial for Ku-band applications

Nguyen, Thi Quynh Hoa; Nguyen, Thi Kim Thu; Cao, Thanh Nghia; Phan, Huu Lam; Luong, Ngoc Minh; Le, Dac Tuyen; Bùi, Xuân Khuyến; Truong, Chi Lam; Vu, Dinh Lam

doi:10.1016/j.optcom.2021.126773

Cited by 52 publications

(25 citation statements)

References 38 publications

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“…When the electric field of incident light is linearly polarized along the y -direction ( ), PCR is expressed as Eq. 4 13 . where the co- and cross-reflection coefficients are defined as , and with and are the magnitude of the electric field of the reflected wave components along x - and y -axes, respectively.…”

Section: Structure Design and Methodsmentioning

confidence: 99%

“…Furthermore, metasurfaces have exhibited the capability of manipulating electromagnetic (EM) waves in microwave and optical frequencies. Such as, designed metasurfaces have demonstrated a variety of unique phenomena and fascinating applications such as beam-steering 6 , 7 , flat lens 8 , optical holograms 9 , broadband absorber 10 , 11 , polarization converter 12 , 13 , and polarimeters 14 .…”

Section: Introductionmentioning

confidence: 99%

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Reconfigurable broadband metasurfaces with nearly perfect absorption and high efficiency polarization conversion in THz range

Nguyen

et al. 2022

Sci Rep

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Reconfigurable metasurfaces (RMSs) that enable the switching function of absorption and polarization conversion have attracted increasing attention. However, the design of RMSs to achieve wideband and high efficiency for both absorption and polarization conversion functions simultaneously remains a great challenge. Here, we propose the design of a RMS structure with a high-efficiency cross-polarization conversion and nearly perfect absorption. The reconfiguration between different functions of polarization conversion and absorption is obtained based on the reversible insulator-to-metal phase transition of Vanadium dioxide (VO$$_{2}$$ 2 ). When the VO$$_{2}$$ 2 is in insulator state, the RMS realizes the cross-polarization conversion function in the wideband of 1.04–3.75 THz with a relative bandwidth up to 113 $$\%$$ % due to the multi-resonant modes of electric and magnetic resonances. Meanwhile, the nearly-perfect absorption is achieved in the range of 1.36–3.38 THz with the corresponding relative bandwidth up to 85 $$\%$$ % for the VO$$_{2}$$ 2 in metallic state. Specially, the wideband and high-efficiency performance of these functionalities is maintained for a wide angle incidence. The capability of bi-functional switch and integration with polarization conversion and absorption in a single metasurface structure endowed with both wideband and high-efficiency characteristics for a wide incident angle is very promising for emerging RMS devices in the terahertz region.

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Section: Structure Design and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reconfigurable broadband metasurfaces with nearly perfect absorption and high efficiency polarization conversion in THz range

Nguyen

et al. 2022

Sci Rep

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“…In order to evaluate the polarization conversion performance of the proposed polarization converter, we use a PCR which is defined from the co-and crossreflection coefficients as Eq. 1 [14].…”

Section: Design and Simulationmentioning

confidence: 99%

Ultra-Wideband and Lightweight Electromagnetic Polarization Converter Based on Multiresonant Metasurface

Nguyen

Phan

et al. 2022

IEEE Access

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Polarization-control devices have attracted considerable interest, however, most of the polarization converters operating at lower frequencies have a heavy design and narrow bandwidth which limits their practical applications. Here we report a simple design of an ultra-wideband and lightweight polarization converter for applications in the S-and C-bands. The proposed converter is designed based on a metasurface structure with the dielectric layer modified to hollow structure to obtain a lightweight design even working at such low frequency. Theoretical analysis and simulation results indicate that the converter can convert the orthogonal polarization transformation of reflected wave. Furthermore, the measurement results show good agreement with the simulation results. The proposed polarization converter can achieve a polarization conversion ratio above 90% in an ultra-wide frequency range from 2 to 8.45 GHz due to multi-resonance modes. These performances are going beyond state of the art in terms of bandwidth and lightweight design, thus it can be applied in various applications in the operating bands.

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“…The suggested converter includes an MS structure designed on the front side of a dielectric substrate material (FR-4) and a ground plane with metallic termination on the back surface. The efficiency of the suggested idea was tested through a set of simulations in comparison to Kuband PCs using crescent-shaped MS [19], double crescent-shaped MS [20], fishbone-shaped MS [21], and two-corner-cut square patch MS [22]. The suggested converter ensures an LP conversion with a polarization conversion ratio (PCR) bigger than 90% all over the Ku-band (microwave band of frequencies from 12 to 18 GHz), as well as in the 18-19 GHz part of the K-band (microwave band of frequencies from 18 to 27 GHz).…”

Section: Introductionmentioning

confidence: 99%

A Nested Square Shaped Metasurface-Based Broadband Linear Polarization Converter for Ku-Band Applications

Kaya

2023

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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This paper presents a wideband, thin, low-cost, and easy to fabricate linear polarization (LP) converter design utilizing metasurface (MS) for Ku-band (12-18 GHz) applications (also in the 18-19 GHz part of the K-band (18-27 GHz)). The design has a topology on a 1.6 mm thick FR-4 dielectric material with copper MS on the front and an entirely copper slab on the back. The presented design shows a polarization conversion ratio (PCR) of beyond 90% within the 12-19 GHz frequency band and also over 99% in the 12.5-13.1 and 16.32-17.64 GHz frequency ranges. To further give insight into the physical structure of the suggested MS-based polarization converter (PC), both the u – v axes are analyzed, and the existing surface behaviors at resonance frequencies are investigated. We compare the performance outputs with other Ku-band PCs, and the efficiencies of the suggested strategy over current MS-based LP converters are emphasized.

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Simple design of a wideband and wide-angle reflective linear polarization converter based on crescent-shaped metamaterial for Ku-band applications

Cited by 52 publications

References 38 publications

Reconfigurable broadband metasurfaces with nearly perfect absorption and high efficiency polarization conversion in THz range

Reconfigurable broadband metasurfaces with nearly perfect absorption and high efficiency polarization conversion in THz range

Ultra-Wideband and Lightweight Electromagnetic Polarization Converter Based on Multiresonant Metasurface

A Nested Square Shaped Metasurface-Based Broadband Linear Polarization Converter for Ku-Band Applications

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