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Design of a metalens for correcting the phase distortions of a hemispheric dielectric radome in the Ka band

Özis, Ezgi and Osipov, Andrey and Eibert, Thomas (2020) Design of a metalens for correcting the phase distortions of a hemispheric dielectric radome in the Ka band. Progress In Electromagnetics Research M, 90, pp. 47-58. Electromagnetics Academy. ISSN 1937-8726

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Official URL: http://www.jpier.org/PIERM/pier.php?paper=19110503

Abstract

A semianalytical approach based on an equivalent circuit representation is proposed to calculate the microwave transmission through metasheets consisting of two-dimensional periodic arrays of planar circular metal rings on a dielectric substrate. In the semianalytical approach, the impedances of the equivalent circuit are parameterized and fitted to match the values of transmission coefficients obtained by full-wave simulations at selected frequency points. As dimensional parameters, the outer radius and the width of the ring are considered. A metalens with four concentric zones is designed by using this semianalytical approach to correct the phase distortions due to a polypropylene hemispheric radome at frequencies around 28 GHz in the Ka band. It is shown that the designed metalens works well for 27 GHz, 28 GHz and 29.5 GHz, implying the bandwidth of approximately 2.5 GHz. The field transmitted through the metalens and the radome is calculated by Physical Optics (PO). The electrically large integration area is divided into small square facets to calculate the PO integral. The calculated and measured results are shown to agree well.

Item URL in elib:https://elib.dlr.de/130260/
Document Type:Article
Title:Design of a metalens for correcting the phase distortions of a hemispheric dielectric radome in the Ka band
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Özis, EzgiEzgi.Oezis (at) dlr.dehttps://orcid.org/0000-0001-6516-7395
Osipov, AndreyAndrey.Osipov (at) dlr.dehttps://orcid.org/0000-0001-8678-9652
Eibert, ThomasTU MünchenUNSPECIFIED
Date:3 March 2020
Journal or Publication Title:Progress In Electromagnetics Research M
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:90
Page Range:pp. 47-58
Publisher:Electromagnetics Academy
ISSN:1937-8726
Status:Published
Keywords:Dielectric radomes, metamaterials, microwave transmission
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Military Technologies
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Reconnaissance and Security
Deposited By: Osipov, Dr. Andrey
Deposited On:11 Nov 2019 14:31
Last Modified:20 Apr 2020 09:32

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