Formation of millimeter waves with electrically tunable orbital angular momentum
File(s)
Published version
Author(s)
Petrov, Peter
Altynnikov, Andrey
Platonov, Roman
Tumarkin, Andrey
Kozyrev, Andrey
Type
Journal Article
Abstract
A method for forming electromagnetic waves with a tunable nonzero orbital angular momentum (OAM) is proposed. The approach is based on transforming an incident plane wave into a helical one using an electrically tunable ferroelectric lens. It uses high-resistive thin/thick film electrodes with a special discrete topology. The correlation between film electrodes topology and the highest order of OAM modes that the lens can form is described. A lens prototype based on Ba0.55Sr0.45TiO3 ferroelectric material and operating at a frequency of 60 GHz was designed, manufactured, and tested. The amplitude and phase distribution of the OAM wave with l = +1 formed by prototype were measured to confirm the effectiveness of the proposed method. The proposed lens has a combination of advantages such as low dimensions, electrical control over the OAM modes, and the possibility to operate in the millimeter wavelength range.
Date Issued
2021-05-13
Date Acceptance
2021-05-05
Citation
Coatings, 2021, 11 (5), pp.1-9
ISSN
2079-6412
Publisher
MDPI AG
Start Page
1
End Page
9
Journal / Book Title
Coatings
Volume
11
Issue
5
Copyright Statement
© 2021 by the authors.
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
License URL
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Identifier
https://www.mdpi.com/2079-6412/11/5/569
Grant Number
EP/P02520X/1
Subjects
Science & Technology
Technology
Physical Sciences
Materials Science, Multidisciplinary
Materials Science, Coatings & Films
Physics, Applied
Materials Science
Physics
orbital angular momentum
millimeter waves
ferroelectric
films
electrically tunable
GENERATION
0306 Physical Chemistry (incl. Structural)
0904 Chemical Engineering
0912 Materials Engineering
Publication Status
Published
Date Publish Online
2021-05-13