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최은미

Choi, EunMi
THz Vacuum Electronics and Applied Electromagnetics Lab.
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dc.citation.endPage 4194 -
dc.citation.number 7 -
dc.citation.startPage 4189 -
dc.citation.title IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION -
dc.citation.volume 69 -
dc.contributor.author Lee, Ingeun -
dc.contributor.author Sawant, Ashwini -
dc.contributor.author Choi, EunMi -
dc.date.accessioned 2023-12-21T15:40:41Z -
dc.date.available 2023-12-21T15:40:41Z -
dc.date.created 2021-01-13 -
dc.date.issued 2021-07 -
dc.description.abstract Although orbital angular momentum (OAM) millimeter-wave wireless communications have attracted much attention given their potential to provide an additional degree of freedom in channel capacity, they still face challenges for realization. For instance, the OAM Although orbital angular momentum (OAM) millimeter-wave wireless communications have attracted much attention given their potential to provide an additional degree of freedom in channel capacity, they still face challenges for realization. For instance, the OAM beam diverges rapidly in free space, limiting the coverage of wireless communication. To increase the communication range, we propose a high-directivity broad-bandwidth OAM antenna, which consists of a nonlinear taper and a lens-integrated metamaterial structure (MMS). A linearly polarized TE (transverse electric)(11) mode traverses through the antenna to generate two OAM modes with the low reflectance of the MMS and a low divergence angle (DiA). We evaluate these two factors separately and analyze the effect of reducing the OAM DiA. Then, we validate the OAM antenna using the CST Microwave Studio software and experimentally verify its performance. The measured mode patterns are quantitatively analyzed using a cross correlation function and by calculating the beam DiA from beam radius variations. The proposed OAM antenna provides a novel approach to effectively reduce the DiA of the OAM beam and may be suitable for realizing millimeter-wave wireless communications. -
dc.identifier.bibliographicCitation IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, v.69, no.7, pp.4189 - 4194 -
dc.identifier.doi 10.1109/TAP.2020.3044602 -
dc.identifier.issn 0018-926X -
dc.identifier.scopusid 2-s2.0-85098801356 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/49480 -
dc.identifier.url https://ieeexplore.ieee.org/document/9301182 -
dc.identifier.wosid 000670595900055 -
dc.language 영어 -
dc.publisher IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC -
dc.title High-Directivity Orbital Angular Momentum Antenna for Millimeter-Wave Wireless Communications -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Engineering, Electrical & ElectronicTelecommunications -
dc.relation.journalResearchArea EngineeringTelecommunications -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor TRANSMISSION -
dc.subject.keywordPlus AntennasWireless communicationPermittivityMetamaterialsMonitoringLensesAperture antennasDivergence angle (DiA)metamaterial lensmetamaterial structure (MMS)nonlinear taperorbital angular momentum (OAM)OAM antennaOAM beam radius -

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