Triple-band linear and circular reflective polarizer based on E-shaped metamaterial

Huang, Xiaojun; Xiao, Bing; Liang, Guo; Yu, Shengqing; Yang, Helin

doi:10.1088/2040-8978/16/12/125101

Cited by 26 publications

(10 citation statements)

References 29 publications

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“…The cross‐polarized reflection component maintains a steady value within the band of interest. In this context, the PCR of the structure has been subsequently calculated over the frequency range from (1) where r xx and r xy are copolarized and cross‐polarized reflection coefficients (Huang et al, ).

sans-serifPCR = \frac{{sans-serif-italicr}_{sans-serif-italicxy}^{sans-serif2}}{r_{xx}^{2} + r_{xy}^{2}}

…”

Section: Simulated Resultsmentioning

confidence: 99%

A Wideband Cross Polarization Conversion Using Metasurface

2017

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A cross polarization conversion (CPC) structure using metasurface over wide bandwidth has been presented for practical applications in this article. The unit cell of the proposed metasurface is made of metallic patch of single circular split‐ring imprinted on top surface of a metal‐backed single‐layer dielectric substrate. Full width at half maxima bandwidth of polarization conversion ratio (PCR) of 11.12 GHz is realized along with wide bandwidth of 9.92 GHz extending from 6.06 GHz to 15.98 GHz with more than 0.8 PCR magnitude is realized using suitable optimization of the geometrical dimensions. Four distinct PCR peaks are observed at 6.56 GHz, 10.38 GHz, 15.12 GHz, and 16.68 GHz. The polarization conversion phenomena at these four frequencies have been analyzed in the light of electromagnetic resonances. The roles of several geometrical parameters of the design are simultaneously investigated. The proposed structure has been studied under oblique incidence, both for transverse electric and transverse magnetic polarizations. Wideband polarization conversion characteristics up to 45° incident angles have been observed for both cases. A prototype of the proposed metasurface is fabricated, and experimental results are in good agreement with the simulated responses. The proposed structure is ultrathin; ~λ/11.8 with respect to the center frequency of the CPC bandwidth.

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sans-serifPCR = \frac{{sans-serif-italicr}_{sans-serif-italicxy}^{sans-serif2}}{r_{xx}^{2} + r_{xy}^{2}}

…”

Section: Simulated Resultsmentioning

confidence: 99%

A Wideband Cross Polarization Conversion Using Metasurface

2017

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“…Besides, for three bands of 6.15-6.45, 10.2-11.45 and 16.25-17.6 GHz, the reflected wave is converted into crosspolarized wave. Comparing with the previous designs [6,[18][19][20][21][22], the proposed single-layer double-L-shaped metasurface has lower profile, more operating frequency bands and wider bandwidth of polarization conversion. …”

Section: Introductionmentioning

confidence: 82%

Broadband reflective multi-polarization converter based on single-layer double-L-shaped metasurface

Mao

Yang

et al. 2017

Appl. Phys. A

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In this paper, a broadband reflective multi-polarization converter based on single-layer double-L-shaped metasurface is proposed. The proposed metasurface can effectively convert linear-polarized (TE/TM) incident wave into the reflected wave with three different polarizations within the frequency bands of 5.5-22.75 GHz. Based on the electric and magnetic resonant features of the double-L-shaped structure, the proposed metasurface can convert linearly polarized waves into crosspolarized waves at three resonant frequency bands. Furthermore, the incident linearly polarized waves can be effectively converted into left/right handed circular-polarized (LHCP and RHCP) waves at other four non-resonance frequency bands. Thus, the proposed metasurface can be regarded as a seven-band multi-polarization converter. The prototype of the proposed polarization converter is analyzed and measured. Both simulated and measured results show the 3-dB axis ratio bandwidth of circular polarization bands and the high polarization conversion efficiency of cross-polarization bands when the incident wave changes from 0° to 30° at both TE and TM modes.

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“…The use of air gap in the dual‐band reflection mode circular polarizer 1 comprising dual‐layered rectangular patch arrays increases the physical dimensions of the polarizer. Asymmetric unit cells are employed for CP generation 2–8 . For obtaining broadband LP to CP conversion, complicated structures like arrays of split‐ring resonators bisected by metallic strips and rectangular metallic patches, 9 right‐angled FSSs, 10 multilayer FSS, 11–14 meander‐line metasurface, 15 and centro‐symmetric dual loop structures 16 have been employed which revolve around structure optimization, cascading of multiple layers and topology optimization.…”

Section: Introductionmentioning

confidence: 99%

Passive FSS based polarization converter integrated microstrip antenna

Das

Mandal

2021

Int J RF Mic Comp-Aid Eng

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A reflection mode linear to circular polarization converter (PC) with high angular stability up to 60° is proposed in which no metallic backing is required, like the conventional PCs. Two distinct frequency selective surfaces (FSS1 and FSS2) are designed to block TE and TM waves, respectively, across the same frequency band (6.8–13.6 GHz). While the top layer (FSS1) and bottom layer (FSS2) are kept at an air gap of λ/8 between them, a phase quadrature in orthogonal components of the reflected wave is realized. An axial ratio ≤ 3 dB is obtained by designing the FSS layers such that the magnitude of reflection coefficient (S11) under TM polarization for FSS2 is equal to that of FSS1 under TE polarization. As a proof of concept, this PC is integrated with a linearly polarized (LP) microstrip antenna (MSA) and tested. It converts the LP waves into circularly polarized (CP) waves at three different frequency bands and also enhances antenna gain by 4.5 dB. Further, by varying only the altitudinal position of the top FSS layer manually, reconfigurability in CP bands can be accomplished without using any active elements and electronic tuning systems. A prototype is fabricated and validated by proper measurements.

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Triple-band linear and circular reflective polarizer based on E-shaped metamaterial

Cited by 26 publications

References 29 publications

A Wideband Cross Polarization Conversion Using Metasurface

A Wideband Cross Polarization Conversion Using Metasurface

Broadband reflective multi-polarization converter based on single-layer double-L-shaped metasurface

Passive FSS based polarization converter integrated microstrip antenna

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