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Compact 3D‐printed reflector antenna for radar applications at K‐band

2021-03-16Artigo científico Acesso aberto
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
datacite.subject.sdg10:Reduzir as Desigualdades
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
dc.contributor.authorReis, João R.
dc.contributor.authorRibeiro, Carlos
dc.contributor.authorCaldeirinha, Rafael F. S.
dc.date.accessioned2026-02-23T15:05:29Z
dc.date.available2026-02-23T15:05:29Z
dc.date.issued2021-03-16
dc.description.abstractA compact parabolic reflector antenna aiming at radar applications in the K-band is presented. It is mainly composed of a thermoplastic material and using classical additive techniques (also known as 3D printing), the proposed high-gain antenna exhibits a novel and unique form factor, particularly of interest for applications with low payload capacity, for example unmanned aerial vehicles. The antenna is composed of four parts: (i) a paraboloid shape embodied in a supporting polylactic acid (PLA) material; (ii) a metallic coating applied to the paraboloid surface of (i), to enable it with electromagnetic reflecting properties; (iii) a PLA spacer that ensures the physical separation (i.e. focal distance) between parts (i) and (iv) and, finally, (iv) a microstrip patch antenna with a reduced ground plane to reduce feed blockage. Subsequently to an overview on the theoretical formulation of parabolic reflector antennas, an antenna targeting 20 dBi and a minimum bandwidth of 500 MHz operating in the 24 GHz ISM radar band have been dimensioned, optimised in CST Microwave Studio and validated against measurements performed on a physical prototype. The simulation and experimental results are in good agreement with the prototype yielding 18.3 dBi of gain and 2.2 GHz of useful bandwidth, clearly demonstrating the potential of the proposed antenna design.eng
dc.description.sponsorshipThis work was partially supported by the European Regional Development Fund (FEDER), PO CENTRO/SI‐IDT, Project RADAVANT (03/SI/2017—Project no.° 033907) and by the Portuguese Government, Foundation for Science and Technology, FCT, through the financial support provided under UIDB/EEA/50008/2020.
dc.identifier.citationReis JR, Ribeiro C, Caldeirinha RFS. Compact 3D‐printed reflector antenna for radar applications at K‐band. IET Microw. Antennas Propag. 2021;15:843–854. https://doi.org/ 10.1049/mia2.12095.
dc.identifier.doi10.1049/mia2.12095
dc.identifier.eissn1751-8733
dc.identifier.issn1751-8725
dc.identifier.urihttp://hdl.handle.net/10400.8/15698
dc.language.isoeng
dc.peerreviewedyes
dc.publisherInstitution of Engineering and Technology (IET)
dc.relation.hasversionhttps://ietresearch.onlinelibrary.wiley.com/doi/10.1049/mia2.12095
dc.relation.ispartofIET Microwaves, Antennas & Propagation
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subject3D printers
dc.subjectAntenna grounds
dc.subjectAntenna reflectors
dc.subjectBandwidth
dc.subjectMicrostrip antennas
dc.subjectMicrowave antennas
dc.subjectRadar
dc.subjectRadar antennas
dc.subjectRadar measurement
dc.subjectReflection
dc.subjectSlot antennas
dc.titleCompact 3D‐printed reflector antenna for radar applications at K‐bandeng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage854
oaire.citation.issue8
oaire.citation.startPage843
oaire.citation.titleIET Microwaves, Antennas & Propagation
oaire.citation.volume15
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameVITORINO REIS
person.familyNameRibeiro
person.familyNameCaldeirinha
person.givenNameJOÃO RICARDO
person.givenNameCarlos
person.givenNameRafael
person.identifier.ciencia-idE210-EE7F-E9BA
person.identifier.ciencia-id4D18-2B1E-0960
person.identifier.orcid0000-0002-0356-9839
person.identifier.orcid0000-0001-7484-6779
person.identifier.orcid0000-0003-0297-7870
person.identifier.ridF-1499-2015
person.identifier.scopus-author-id7801603527
relation.isAuthorOfPublicationbee6522a-271f-47e6-8aab-a647a7566376
relation.isAuthorOfPublicationa388f639-664e-435c-8e1a-d6aee9213f70
relation.isAuthorOfPublicationb04f8672-d7af-443e-9104-ae8698dcdc9d
relation.isAuthorOfPublication.latestForDiscoverybee6522a-271f-47e6-8aab-a647a7566376

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A compact parabolic reflector antenna aiming at radar applications in the K-band is presented. It is mainly composed of a thermoplastic material and using classical additive techniques (also known as 3D printing), the proposed high-gain antenna exhibits a novel and unique form factor, particularly of interest for applications with low payload capacity, for example unmanned aerial vehicles. The antenna is composed of four parts: (i) a paraboloid shape embodied in a supporting polylactic acid (PLA) material; (ii) a metallic coating applied to the paraboloid surface of (i), to enable it with electromagnetic reflecting properties; (iii) a PLA spacer that ensures the physical separation (i.e. focal distance) between parts (i) and (iv) and, finally, (iv) a microstrip patch antenna with a reduced ground plane to reduce feed blockage. Subsequently to an overview on the theoretical formulation of parabolic reflector antennas, an antenna targeting 20 dBi and a minimum bandwidth of 500 MHz operating in the 24 GHz ISM radar band have been dimensioned, optimised in CST Microwave Studio and validated against measurements performed on a physical prototype. The simulation and experimental results are in good agreement with the prototype yielding 18.3 dBi of gain and 2.2 GHz of useful bandwidth, clearly demonstrating the potential of the proposed antenna design.
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