Tunable Terahertz Polarization Converter Based on Graphene Metasurfaces

Bakhtiari, Behnaz; Oraizi, Homayoon

doi:10.23919/eucap48036.2020.9135512

Cited by 6 publications

(2 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fortunately, the emergence of metasurface (MS) brings new hope for the development of polarization converter [4]. Utilizing powerful ability of MS to manipulate EM, people proposed various MSs to achieve polarization conversion, including frequency selective surfaces (FSS) [5][6][7][8][9], tunable polarization converters [10][11][12][13][14], chiral geometry, and anisotropic MS [15][16][17][18][19][20][21][22][23]. Among them, the anisotropic properties of MS are widely used in the design of reflective polarization converters, such as "double-V" [21], "grating" [22], and "split-ring" [23] MSs.…”

Section: Introductionmentioning

confidence: 99%

Ultrawideband Polarization Conversion Metasurface with Wide Incidence Angle Suitable to Reduce RCS of Planar and Curved Surfaces

Su,

Guo,

Dou

et al. 2024

PIER M

View full text Add to dashboard Cite

In this paper, an ultra-wideband linear cross polarization converter based on metasurface (MS) with wide incidence angle is presented and applied to the reduction of radar cross section (RCS) for planar and conformal surfaces. A pair of bow-and-arrow shaped split ring cells is printed on an FR4 dielectric substrate. The simulated and experimental results indicate that the converter achieves a cross polarization conversion ratio (PCR) of over 90% in 11.5-28.5 GHz (85% relative bandwidth) and that its oblique incidence performance can be stabilized at ±40 • with a very small loss of bandwidth (1.65%). Then, the polarization conversion metasurface (PCM) cells and their mirror cells are laid out in a checkerboard array and applied to reduce the RCS of planar and conformal surfaces. The planar PCM achieves more than 7 dB of RCS reduction in 11.4 to 29.6 GHz (88.8% relative bandwidth), and the conformal array with a center angle of 90 • obtains more than 10 dB RCS reduction in 18.2 to 23.7 GHz. Due to its excellent performances, the proposed metasurface offers promising options for polarization control devices and stealth technology in Ku-and K-bands.

show abstract

Section: Introductionmentioning

confidence: 99%

Ultrawideband Polarization Conversion Metasurface with Wide Incidence Angle Suitable to Reduce RCS of Planar and Curved Surfaces

Su,

Guo,

Dou

et al. 2024

PIER M

View full text Add to dashboard Cite

show abstract

“…Over the past decade, the advent and development of metasurfaces has led to significant advances to wave processing in modern telecommunication and optical systems [1][2][3][4][5][6][7][8][9][10] . However, conventional static metasurfaces are restricted by the Lorentz reciprocity theorem which significantly limits their applications as versatile wave shapers and wave processors in modern wireless communication systems.…”

Section: Introductionmentioning

confidence: 99%

Full-duplex Reflective Beamsteering Metasurface Featuring Magnetless Nonreciprocal Amplification

Taravati,

Eleftheriades

2021

Preprint

View full text Add to dashboard Cite

Nonreciprocal radiation refers to electromagnetic wave radiation in which a structure provides different response under the change of the direction of the incident field. Modern wireless telecommunication systems demand versatile apparatuses which are capable of fullduplex nonreciprocal wave processing and amplification, especially in the reflective state.Here, we propose full-duplex reflective beamsteering metasurfaces for magnetless nonreciprocal wave amplification. To realize such a unique, extraordinary and versatile functionality, we propose a completely new architecture in which a chain of series cascaded radiating patches are integrated with nonreciprocal phase shifters, providing an efficient mechanism for wave reception, signal amplification, nonmagnetic nonreciprocal phase shifting and steerable wave reflection. Having accomplished all these functionalities in the reflective state, the metasurface represents a conspicuous apparatus for efficient, controllable and programmable wave engineering for wireless telecommunications. Such an ultrathin reflective metasurface can provide directive and diverse radiation beams, and steerable beams by simply changing the bias of the gradient active nonmagnetic nonreciprocal phase shifters.

show abstract

Fractal Shaped Multi-Layer Unit Cell Design With Tunable Polarization Conversion Performance

Banerjee,

Chakravarty,

Chakravarty

et al. 2023

2023 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON)

View full text Add to dashboard Cite

Tunable Terahertz Polarization Converter Based on Graphene Metasurfaces

Cited by 6 publications

References 12 publications

Ultrawideband Polarization Conversion Metasurface with Wide Incidence Angle Suitable to Reduce RCS of Planar and Curved Surfaces

Ultrawideband Polarization Conversion Metasurface with Wide Incidence Angle Suitable to Reduce RCS of Planar and Curved Surfaces

Full-duplex Reflective Beamsteering Metasurface Featuring Magnetless Nonreciprocal Amplification

Fractal Shaped Multi-Layer Unit Cell Design With Tunable Polarization Conversion Performance

Contact Info

Product

Resources

About