Singular Integral Equations in Scattering of Planar Dielectric Waveguide Eigenwaves by the System of Graphene Strips at THz

被引：1

作者：

Kaliberda, Mstislav E. ^{[1
,2
]}

Lytvynenko, Leonid M. ^{[1
,2
]}

Pogarsky, Sergey A. ^{[1
,2
]}

机构：

[1] Kharkov Natl Univ, Sch Radiophys Biomed Elect & Comp Syst, Kharkiv, Ukraine

[2] Natl Acad Sci Ukraine, Inst Radio Astron, Kharkiv, Ukraine

来源：

PLASMONICS | 2022年 / 17卷 / 02期

关键词：

Graphene strip; Dielectric waveguide; Radiation; Singular integral equation; Leaky-wave antenna; ANTENNA; METAMATERIAL; GRATINGS; MODEL; 2-D;

D O I：

10.1007/s11468-021-01511-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We consider the scattering of the H-polarized eigenwaves of a planar dielectric waveguide by a coplanar system of graphene strips in the THz range. The strips are placed along the centreline of the waveguide. Our treatment is based on the singular integral equations with the Nystrom-type discretization algorithm. Dependences of the scattering characteristics, near and far fields, are studied. Frequency scanning radiation patterns are presented. Maximum of the radiated power is observed near the plasmon resonances. The resonant frequency and main lobe level can be controlled by variation of the chemical potential. Applied optimization procedure allows to obtain the radiation pattern with the side-lobe level less than - 20 dB. The presented results can be used in designing of graphene leaky-wave antennas.

引用

页码：505 / 517

页数：13

共 43 条

[1]

Ahapova OO, 2020, 2020 IEEE 40TH INTERNATIONAL CONFERENCE ON ELECTRONICS AND NANOTECHNOLOGY (ELNANO), P34, DOI [10.1109/ELNANO50318.2020.9088752, 10.1109/elnano50318.2020.9088752]

[2] H-SCATTERING OF THIN-FILM MODES FROM PERIODIC GRATINGS OF FINITE EXTENT [J].