Conformal and polarization adjustable cloaking metasurface utilizing graphene with low radar cross section for terahertz applications

Metamaterials with precisely chosen negative permittivity and permeability are preferable to cloak the target without scattering. In this work, a metasurface is designed by using graphene as conducting material to cloak a target cylinder under the instancing of TM and TE polarized waves in terahertz...

Full description

Saved in:
Bibliographic Details
Published in:Optical and quantum electronics 2022-07, Vol.54 (7), Article 454
Main Authors: Kantamaneni, Srilatha, Madhav, Boddapati Taraka Phani, Badisa, Anil Babu, Das, Sudipta, Patel, Shobhit Kiritkumar, Parmar, Juveriya
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemical potential
Computer Communication Networks
Electrical Engineering
Graphene
Incidence angle
Lasers
Metamaterials
Metasurfaces
Optical Devices
Optics
Parametric analysis
Photonics
Physics
Physics and Astronomy
Radar cross sections
Reduction
Relaxation time
Scattering
Terahertz frequencies
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Metamaterials with precisely chosen negative permittivity and permeability are preferable to cloak the target without scattering. In this work, a metasurface is designed by using graphene as conducting material to cloak a target cylinder under the instancing of TM and TE polarized waves in terahertz range of frequencies. The electric sheet impedance and magnetic sheet admittance played the crucial role to achieve the cloaking with good scattering reduction. Various incident angles are simulated and analyzed for obtaining the good radar cross section (RCS). The proposed metasurface resonates at three different frequencies in terahertz range of 3.8 THz, 9 THz and 13.8 THz and the bandwidth of the three resonating frequencies are 3.5–4.58 THZ, 8.8–9.5 THz and 13–14.98 THz respectively. In addition, the parametric analysis of chemical potential and relaxation time shows effective results in scattering reduction. The monostatic and bistatic RCS are simulated, which results high scattering reduction under different polarizations of different incident angles. The proposed structure is adjustable to various angle of incidence with less than 40 dB scattering reduction for various selected frequencies.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-022-03863-w