Diffraction of electromagnetic waves by a planar interface between perfectly absorbing and anomalously transmitting metasurface half-planes

Umul, Yusuf Ziya

doi:10.1016/j.ijleo.2018.10.206

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…The phase control methods of metasurfaces mainly include two types: resonance phase control [6][7][8] and geometric phase control (also known as Pancharatnam-Berry (PB) phase control) [9][10][11]. The resonant phase refers to the phase response of the metasurface unit cell structure at a specific resonant frequency.…”

Section: Introductionmentioning

confidence: 99%

Design of Circular Polarization Multiplexing Beam Splitter Based on Transmission Metasurface

Hao¹,

Tang²,

Zheng³

et al. 2022

PIER M

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A circular polarization multiplexing metasurface beam splitter operating at 15 GHz with polarization conversion effect is proposed. The unit cell is formed by alternately stacking 4 layers of metal and 2 layers of dielectric substrates cascaded along the propagation direction, separated by air. The resonant phase of the unit cell can be changed by changing the size parameters of the two arms of the metal cross patch, and the phase coverage of nearly 360 • can be achieved in the direction of the two orthogonal linear polarization components, while transmission coefficient is above 85%. The circular polarization geometric phase covering 360 • can be achieved by rotating the metal patch. The polarization conversion of the circularly polarized wave can be realized by setting the phase difference of the two orthogonal linear polarization components to 180 • , and the polarization conversion ratio (PCR) at the working frequency is greater than 90%. The simulation and test results show that when the circularly polarized electromagnetic wave is perpendicularly incident on the metasurface beam splitter, the transmitted wave is divided into two circularly polarized waves with different exit angles and orthogonal to the polarization direction of the incident wave. This work may provide new ideas for the integration and miniaturization of traditional beam splitting devices and have important application prospects in fields such as multiple input multiple output (MIMO) systems.

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Section: Introductionmentioning

confidence: 99%

Design of Circular Polarization Multiplexing Beam Splitter Based on Transmission Metasurface

Hao¹,

Tang²,

Zheng³

et al. 2022

PIER M

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“…The scattering and diffraction problems on metasurfaces have also been studied by several authors in recent years [20]- [24]. Umul investigated the effect of the discontinuities on the anomalous reflection characteristics of metasurfaces in several studies and investigated the metasurface structures with the different discontinuity problems [24], [27]- [33]. After his several scattering problem studies, he has realized that the diffracted waves have a direct relation with the scattered geometrical optical (GO) waves at the transition boundaries.…”

Section: Introductionmentioning

confidence: 99%

Wave Scattering by a Planar Junction Between Anomalously Reflecting Metasurface and Impedance Sheets

Celik

Canbolat

2021

IEEE Access

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Metasurface technology has become one of the promising structures for controlling and manipulating of the phase and amplitude characteristics of the electromagnetic waves in recent years. For this reason, the determination of the exact diffracted fields is also crucial especially in the edge or discontinuity points of these types of materials. In the paper, the discontinuity problem by the junction between the layers of an anomalously reflecting metasurface and an impedance half-screen is taken into consideration. These two planar layers have a common edge discontinuity where the diffracted waves occur. The scattered waves from the structure are obtained by the novel technique of the method of transition boundary, which especially offers the relation between the diffracted and scattered geometrical optical waves at the transition boundaries. The diffracted wave expressions are derived by the technique of the method of transition boundary and the uniform wave expressions are obtained by the method of uniform geometrical theory of diffraction. The total wave result of the method of transition boundary is also compared and verified by the well-known theory of physical optics. The behaviors of the total wave and its components are analyzed numerically.

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Diffraction by an anomalously perfect reflecting metasurface half-plane

Umul

2020

Optik

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Diffraction of electromagnetic waves by a planar interface between perfectly absorbing and anomalously transmitting metasurface half-planes

Cited by 5 publications

References 28 publications

Design of Circular Polarization Multiplexing Beam Splitter Based on Transmission Metasurface

Design of Circular Polarization Multiplexing Beam Splitter Based on Transmission Metasurface

Wave Scattering by a Planar Junction Between Anomalously Reflecting Metasurface and Impedance Sheets

Diffraction by an anomalously perfect reflecting metasurface half-plane

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