Directivity enhancement of a cylindrical wire antenna by a
graded index dielectric shell designed using strictly conformal
transformation optics

J 2021

Directivity enhancement of a cylindrical wire antenna by a graded index dielectric shell designed using strictly conformal transformation optics

ESKANDARI, Hossein; Soorena SAVIZ a Tomáš TYC

Základní údaje

Originální název

Directivity enhancement of a cylindrical wire antenna by a graded index dielectric shell designed using strictly conformal transformation optics

Autoři

ESKANDARI, Hossein (garant); Soorena SAVIZ a Tomáš TYC (203 Česká republika, domácí)

Vydání

Nature Scientific Reports, Nature Research, 2021, 2045-2322

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.997

Kód RIV

RIV/00216224:14310/21:00124375

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1038/s41598-021-92200-4

UT WoS

000667447800016

EID Scopus

2-s2.0-85108840047

Klíčová slova anglicky

POLARIZATION SPLITTER; LENS ANTENNAS; WAVE; DEVICES

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 15. 3. 2022 15:43, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

A transformation-optical method is presented to enhance the directivity of a cylindrical wire antenna by using an all-dielectric graded index medium. The strictly conformal mapping between two doubly connected virtual and physical domains is established numerically. Multiple directive beams are produced, providing directive emission. The state-of-the-art optical path rescaling method is employed to mitigate the superluminal regions. The resulting transformation medium is all-dielectric and nondispersive, which can provide broadband functionality and facilitate the realization of the device using available fabrication technologies. The realization of the device is demonstrated by dielectric perforation based on the effective medium theory. The device's functionality is verified by carrying out both ray-tracing and full-wave simulations using finite-element-based software COMSOL Multiphysics.

Citovat

ESKANDARI, Hossein; Soorena SAVIZ a Tomáš TYC. Directivity enhancement of a cylindrical wire antenna by a graded index dielectric shell designed using strictly conformal transformation optics. Nature Scientific Reports. Nature Research, 2021, roč. 11, č. 1, s. "13035", 11 s. ISSN 2045-2322. Dostupné z: https://doi.org/10.1038/s41598-021-92200-4.

@article{1839837,
   author = {Eskandari, Hossein and Saviz, Soorena and Tyc, Tomáš},
   article_number = {1},
   doi = {https://doi.org/10.1038/s41598-021-92200-4},
   keywords = {POLARIZATION SPLITTER; LENS ANTENNAS; WAVE; DEVICES},
   language = {eng},
   issn = {2045-2322},
   journal = {Nature Scientific Reports},
   title = {Directivity enhancement of a cylindrical wire antenna by a graded index dielectric shell designed using strictly conformal transformation optics},
   url = {https://www.nature.com/articles/s41598-021-92200-4},
   volume = {11},
   year = {2021}
}

TY  - JOUR
ID  - 1839837
AU  - Eskandari, Hossein - Saviz, Soorena - Tyc, Tomáš
PY  - 2021
TI  - Directivity enhancement of a cylindrical wire antenna by a graded index dielectric shell designed using strictly conformal transformation optics
JF  - Nature Scientific Reports
VL  - 11
IS  - 1
SP  - "13035"
EP  - "13035"
PB  - Nature Research
SN  - 20452322
KW  - POLARIZATION SPLITTER
KW  - LENS ANTENNAS
KW  - WAVE
KW  - DEVICES
UR  - https://www.nature.com/articles/s41598-021-92200-4
N2  - A transformation-optical method is presented to enhance the directivity of a cylindrical wire antenna by using an all-dielectric graded index medium. The strictly conformal mapping between two doubly connected virtual and physical domains is established numerically. Multiple directive beams are produced, providing directive emission. The state-of-the-art optical path rescaling method is employed to mitigate the superluminal regions. The resulting transformation medium is all-dielectric and nondispersive, which can provide broadband functionality and facilitate the realization of the device using available fabrication technologies. The realization of the device is demonstrated by dielectric perforation based on the effective medium theory. The device's functionality is verified by carrying out both ray-tracing and full-wave simulations using finite-element-based software COMSOL Multiphysics.
ER  -

ESKANDARI, Hossein; Soorena SAVIZ a Tomáš TYC. Directivity enhancement of a cylindrical wire antenna by a graded index dielectric shell designed using strictly conformal transformation optics. \textit{Nature Scientific Reports}. Nature Research, 2021, roč.~11, č.~1, s.~''13035'', 11 s. ISSN~2045-2322. Dostupné z: https://doi.org/10.1038/s41598-021-92200-4.

Přehled o publikaci