Simple Design of a Copolarization Wideband Metamaterial Absorber for C-Band Applications

Tuan, Tran Sy; Lãm, Vũ Đình; Hòa, Nguyễn Thị

doi:10.1007/s11664-019-07301-8

Cited by 10 publications

(2 citation statements)

References 43 publications

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“…The normalized impedance of the designed structure is calculated by Eq. ( 8 ) 11 , 53 , 54 . As depicted in Fig.…”

Section: Resultsmentioning

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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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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“…The normalized impedance of the designed structure is calculated by Eq. ( 8 ) 11 , 53 , 54 . As depicted in Fig.…”

Section: Resultsmentioning

confidence: 99%

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

Nguyen

et al. 2022

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The absorption mechanism of the proposed MA can be explained by the impedance matching between the MA structure and the free space. The normalized impedance of the MA is given by equation ( 4) [45], [46].…”

Section: Resultsmentioning

confidence: 99%

Simple Design of a Wideband and Wide-Angle Insensitive Metamaterial Absorber Using Lumped Resistors for X- and Ku-Bands

et al. 2021

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We report a wideband and polarization-/wide-angle insensitive metamaterial absorber based on a symmetry structure associated with surface mount resistors. The proposed structure consists of a periodic array of a top metal symmetry resonator loading with four lumped resistors and a continuous metal ground plane separated by a dielectric substrate of FR-4. A prototype of the proposed absorber is fabricated and measured, confirming a good agreement between the measurement and simulation results. The proposed absorber shows polarization-insensitive behavior and the absorption response in a frequency range from 8-18 GHz covering the entire X-and Ku-bands with an absorptivity above 80% for a wide incident angle up to 40 o for both transverse electric and transverse magnetic polarizations. Compared with the reported broadband absorbers using lumped resistors, our proposed absorber exhibits excellent characteristics in terms of compact and simple structure, high relative absorption bandwidth, and polarization and wide-incident insensitivity. Therefore, this design shows promising potential for both X-and Ku-band applications.

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Design and Analysis of an Ultra-thin Dual-band Metamaterial Absorber for S-Band and X-Band

Luo

Zhao

et al. 2021

J Supercond Nov Magn

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Simple Design of a Copolarization Wideband Metamaterial Absorber for C-Band Applications

Cited by 10 publications

References 43 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

Simple Design of a Wideband and Wide-Angle Insensitive Metamaterial Absorber Using Lumped Resistors for X- and Ku-Bands

Design and Analysis of an Ultra-thin Dual-band Metamaterial Absorber for S-Band and X-Band

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