A Broadband Circular Polarizer Based on Cross-Shaped Composite Frequency Selective Surfaces

Zhang, Wei; Li, Jianying; Xie, Jian

doi:10.1109/tap.2017.2735459

Cited by 80 publications

(34 citation statements)

References 9 publications

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“…This approach has many desirable advantages including the ability to reduce the complexity of the primary radiator design, independently control the axial ratio bandwidth and provide a means for implementing polarization agility and self‐filtering . A single layer FSS inherently exhibits narrow spectral responses, therefore a major design challenge is to create a LP to CP convertor topology that meets the bandwidth requirements of modern wireless systems, over which the axial ratio is below a defined value, typically 3 dB . A circuit driven methodology is often used to obtain a broadband solution for transmission‐type polarizers, however, this requires the deployment of multiple layers of precisely spaced FSS, each composed of an array of conductive elements printed on a thin dielectric substrate.…”

Section: Introductionmentioning

confidence: 99%

“…3 A single layer FSS inherently exhibits narrow spectral responses, 4 therefore a major design challenge is to create a LP to CP convertor topology that meets the bandwidth requirements of modern wireless systems, over which the axial ratio is below a defined value, typically 3 dB. [5][6][7] A circuit driven methodology is often used to obtain a broadband solution for transmission-type polarizers, 5,6 however, this requires the deployment of multiple layers of precisely spaced FSS, each composed of an array of conductive elements printed on a thin dielectric substrate. Recently however, a single layer printed zigzag metal strip metasurface design 8 was shown to exhibit a 3 dB axial ratio bandwidth (AR BW) of 53%, a performance that previously was only obtainable from a structure constructed of multiple printed screens.…”

Section: Introductionmentioning

confidence: 99%

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Bandwidth optimization of linear to circular polarization convertors based on slot FSS

Clendinning

Cahill

Zelenchuk

et al. 2019

Micro & Optical Tech Letters

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This study reports an evaluation of the maximum axial ratio (AR) bandwidth which is obtainable from a transmission type linear (LP) to circular polarization (CP) convertor working at normal incidence. The anisotropic bandpass FSS structure is composed of a thin metal surface perforated with an array of unequal length orthogonal slots. Full wave simulations are used to study the effect of changing the physical dimensions of the individual slot structural parameters by computing the amplitude and phase of the TE and TM transmitted waves at normal incidence over the frequency range 8‐12 GHz. The results are used to establish design guidelines which are employed to obtain the optimum topology for a single layer LP to CP convertor working at a center frequency of 10 GHz. The numerical results which are shown to be in close agreement with measurements, demonstrate that this class of periodic structure can be designed to give a 3 dB AR fractional bandwidth of 5.0%.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Bandwidth optimization of linear to circular polarization convertors based on slot FSS

Clendinning

Cahill

Zelenchuk

et al. 2019

Micro & Optical Tech Letters

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“…Therefore, when the switch is off, linearly polarized incident waves can be rotated into circularly polarized reflection waves. The PCR (Polarization Conversion Ratio) is calculated as (1) and Axis Ratio (AR) is defined as (2) [35].…”

Section: Design and Simulationmentioning

confidence: 99%

A Novel Reconfigurable Metasurface with Coincident and Ultra-Wideband LTL and LTC Polarization Conversion Functions

Guo¹,

Cao²,

Gao³

et al. 2019

RADIOENGINEERING

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In this paper, a novel reconfigurable metasurface (NRM) with coincident and ultra-wideband linear-to-linear (LTL) and linear-to-circular (LTC) polarization conversion functions is proposed. The unit of the proposed NRM consists of superstrate, air layer, metal patch, substrate and metal ground successively. By loading micro-electromechanical system (MEMS) between two adjacent metallic via, the proposed NRM can realize LTL and LTC polarization conversion efficiently. Numerical simulation results reveal that the bandwidth of LTL and LTC polarization conversion are coincident from 5.7 GHz to 23.5 GHz (fractional bandwidth of 122%). It is worth mentioning that few metasurface in existing literature can achieve highly coincident and ultra-wideband LTL and LTC polarization conversion functions. Finally, measurement results are in accordance with simulation results.

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“…MLPs usually employ a multilayer structure, and spacers with low permittivity are necessary to maintain the desired distances between layers. In recent years, various kinds of wideband transmissive multilayer [11][12][13][14][15][16][17] and 3D [18,19] LP-CP converters based on split-ring resonators [11,13], frequency selective surfaces (FSSs) [12,15,16], and metamaterials [14,17,18] have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Design of Wideband Planar Linear-Circular Polarization Converter With Centrosymmetric Dual-Loop Elements

Peng¹,

Hu²,

Guo³

et al. 2018

PIER M

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A wideband planar linear-circular polarization converter comprising periodic centrosymmetric dual-loop unit cells with wideband property is presented in this paper. Full-wave simulation and a parameter study are conducted to demonstrate the basic working principle of the converter. The performance of the device under oblique and deflected incidence situations is considered and discussed, and a prototype is manufactured and tested. Measured results show that the working band of the device covers 19.3 GHz to 31.8 GHz with less than 3 dB axial ratio, which agrees well with the simulated ones and thus validates the design concept.

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A Broadband Circular Polarizer Based on Cross-Shaped Composite Frequency Selective Surfaces

Cited by 80 publications

References 9 publications

Bandwidth optimization of linear to circular polarization convertors based on slot FSS

Bandwidth optimization of linear to circular polarization convertors based on slot FSS

A Novel Reconfigurable Metasurface with Coincident and Ultra-Wideband LTL and LTC Polarization Conversion Functions

Design of Wideband Planar Linear-Circular Polarization Converter With Centrosymmetric Dual-Loop Elements

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