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dc.contributor.authorWen, Lehu
dc.contributor.authorGao, Steven
dc.contributor.authorLuo, Qi
dc.contributor.authorHu, Wei
dc.contributor.authorSanz-Izquierdo, Benito
dc.contributor.authorYang, Xue-xia
dc.date.accessioned2023-07-05T10:45:01Z
dc.date.available2023-07-05T10:45:01Z
dc.date.issued2023-05-30
dc.identifier.citationWen , L , Gao , S , Luo , Q , Hu , W , Sanz-Izquierdo , B & Yang , X 2023 , ' Wideband Circularly Polarized Reflectarray Antenna Using Rotational Symmetrical Crossed Dipoles ' , IEEE Transactions on Antennas and Propagation , vol. 71 , no. 5 , 10054549 , pp. 4576-4581 . https://doi.org/10.1109/TAP.2023.3247943
dc.identifier.issn0018-926X
dc.identifier.otherIeee: 10.1109/TAP.2023.3247943
dc.identifier.otherORCID: /0000-0001-9000-4133/work/138281143
dc.identifier.urihttp://hdl.handle.net/2299/26478
dc.description© 2023 IEEE. This is the accepted manuscript version of an article which has been published in final form at https://doi.org/10.1109/TAP.2023.3247943
dc.description.abstractA wideband circularly polarized (CP) reflectarray (RA) antenna using rotational symmetrical crossed dipoles is presented. This is the first time investigating coupled crossed dipoles as the unit cell for wideband reflection bandwidth in the CP RA design. Equivalent circuit analysis shows that when a CP wave impinges on the designed unit cell, two series resonances, and two parallel resonances are simultaneously excited on the crossed dipoles. Owing to these four different resonances, the CP reflection bandwidth is greatly improved and elaborately adjusted by controlling the coupling between the crossed dipoles. The CP reflection bandwidth ratio of the unit cell is enhanced up to 2:1 for $S_{x} < -15$ dB with a thin thickness of $0.12 \lambda {0}$. Based on this unit cell, a wideband -20° collimated CP RA antenna with a circular aperture of 316 unit cells was designed, fabricated, and measured for final performance verification. The measured results show that a wide CP bandwidth of 7.6-15.9 GHz is achieved with the axial ratio (AR) < 3 dB. In addition, the measured 3 dB gain bandwidth is better than 43.7% with a peak realized gain of 26.3 dBic and maximum aperture efficiency (AE) of 58.3%.en
dc.format.extent6
dc.format.extent1639563
dc.language.isoeng
dc.relation.ispartofIEEE Transactions on Antennas and Propagation
dc.subjectReflection
dc.subjectAntenna measurements
dc.subjectWideband
dc.subjectScattering parameters
dc.subjectReflector antennas
dc.subjectDipole antennas
dc.subjectBroadband antennas
dc.subjectwideband array antenna
dc.subjectCircular polarization
dc.subjectreflectarray (RA) antenna
dc.subjectcrossed dipoles
dc.subjectElectrical and Electronic Engineering
dc.titleWideband Circularly Polarized Reflectarray Antenna Using Rotational Symmetrical Crossed Dipolesen
dc.contributor.institutionCommunications and Intelligent Systems
dc.contributor.institutionCentre for Engineering Research
dc.contributor.institutionDepartment of Engineering and Technology
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionUniversity of Hertfordshire
dc.description.statusPeer reviewed
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85149405609&partnerID=8YFLogxK
rioxxterms.versionofrecord10.1109/TAP.2023.3247943
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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