Metasurface cavity antenna for broadband high‐gain circularly polarized radiation

Swain, Rajanikanta; Mishra, Rabindra Kishore

doi:10.1002/mmce.21609

Cited by 10 publications

(7 citation statements)

References 34 publications

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“…Fabry-Perot (FP) antenna is often adopted to realize gain enhancement since it has the advantages of compact structure and ease of achieving high gain with simple feeding structure. MS is placed above a source antenna and works as the partially reflective surface (PRS) of FP resonant cavity which can achieve gain enhancement [7][8][9]. Meanwhile, MS can convert the linearly polarized wave of a source antenna to a circularly polarized output and the circularly polarized FP antenna can be realized.…”

Section: Introductionmentioning

confidence: 99%

A High-Gain Polarization Reconfigurable Antenna Using Polarization Conversion Metasurface

Zhang¹,

Chen²,

Jiang³

et al. 2020

PIER C

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A novel high-gain polarization reconfigurable antenna composed of a polarization conversion metasurface (PCM) and a linearly polarized source patch antenna is presented in this article. The PCM is placed above the source patch antenna with an air gap. The proposed PCM can convert the linear polarization (LP) wave radiated by the source patch antenna to LP wave, right-hand circular polarization (RHCP) wave, and left-hand circular polarization (LHCP) wave by rotating the PCM around the center of the antenna. Meanwhile, the proposed PCM can serve as the partially reflective surface (PRS) of a Fabry-Perot (FP) resonant cavity which can achieve gain enhancement. In order to validate the performance of the proposed design, a prototype antenna is fabricated and measured. Simulated and measured results agree well. From 10.43 GHz to 11.2 GHz, the polarization reconfiguration can be achieved by rotating the PCM to different angles while maintaining the high gain performance simultaneously.

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Section: Introductionmentioning

confidence: 99%

A High-Gain Polarization Reconfigurable Antenna Using Polarization Conversion Metasurface

Zhang¹,

Chen²,

Jiang³

et al. 2020

PIER C

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“…Recently engineered thin sheets with the anisotropic distribution of sub-wavelength inclusions are popular as metasurfaces and have a wide range of applications like electromagnetic (EM) cloaking [11], wave manipulation [12], RCS reduction [13], and advanced antennas [14,15]. Besides, metasurface-based systems are reported to switch the main beam of high-gain antennas using the phase transformation in the near-field zone [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Low‐loss ultra‐wideband beam switching metasurface antenna in X‐band

Swain

Naik

Panda

2020

IET Microwaves, Antennas & Propagation

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This study proposes an ultra‐wideband (UWB) metasurface‐based beam‐switching antenna system. A coplanar (CP) waveguide fed slot antenna (with 49% operating bandwidth) is coupled with a hexagonal metallic aperture to generate CP beam in the 10.2–10.8 GHz band. An octagonal split ring inclusion‐based meta‐element is designed to achieve 2π transmission phase variation with near‐unity magnitude. The principle of the Pancharatnam–Berry metasurface is used to design an offset metasurface superstrate for tilting the main beam of the UWB antenna for the CP band. Measured results (S11, axial ratio, and radiation pattern) agree well with full‐wave simulations. The fabricated X‐band UWB aperture coupled antenna system uses the metasurface superstrate to achieve a broadside beam for the lower band and tilted beam for the upper band. This antenna system holds promise for next‐generation vehicular and satellite communication applications.

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“…The superstructure can be realized in the form of uniform 2D dielectric slabs, single or multiple 2D frequency selective surfaces (FSS), single or multiple partially reflective surfaces (PRS), or metasurface . These superstructures are then used to design single or multiband FPCAs with linear, dual‐linear or circular polarization, having boresight, tilted or reconfigurable main beam depending on the particular application.…”

Section: Introductionmentioning

confidence: 99%

Dual‐polarized low sidelobe Fabry‐Perot antenna using tapered partially reflective surface

Niaz

Yin

Zheng

et al. 2019

Int J RF Microw Comput Aided Eng

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A novel dual-polarized Fabry-Perot (FP) cavity antenna with low sidelobes is proposed. Low sidelobes are obtained by using a tapered partially reflective surface (PRS) in the form of circular lattice instead of the conventional rectangular lattice. As the PRS can be regarded as a 2D leaky wave surface on which cylindrical waves propagate outward radially in the form of concentric rings, so arranging the PRS elements in the form of circular lattice and then applying tapering on it yields low sidelobes in both the E-and H-planes. The performance of the proposed PRS is validated by fabricating a dual-polarized FP antenna and measuring its radiation patterns. Peak realized gains of 18.6 and 18.5 dBi are obtained for horizontal and vertical polarizations respectively, giving an aperture efficiency of around 42%. Measured sidelobe levels are reduced to lower than −21.3 dB in both the E-and H-planes for the two orthogonal polarizations. K E Y W O R D S2D leaky-wave antenna, dual-polarized antenna, Fabry-Perot (FP) cavity antenna, low sidelobe PRS antenna, partially reflective surface (PRS)

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Metasurface cavity antenna for broadband high‐gain circularly polarized radiation

Cited by 10 publications

References 34 publications

A High-Gain Polarization Reconfigurable Antenna Using Polarization Conversion Metasurface

A High-Gain Polarization Reconfigurable Antenna Using Polarization Conversion Metasurface

Low‐loss ultra‐wideband beam switching metasurface antenna in X‐band

Dual‐polarized low sidelobe Fabry‐Perot antenna using tapered partially reflective surface

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