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dc.creatorÁlvarez Narciandi, Guillermoes_ES
dc.creatorLaviada, Jaimees_ES
dc.creatorÁlvarez López, Yuries_ES
dc.creatorDucournau, Guillaumees_ES
dc.creatorLuxe, Cyriles_ES
dc.creatorBelem Goncalves, Cybellees_ES
dc.creatorGianesello, Frederices_ES
dc.creatorNachabe, Noures_ES
dc.creatorRío Bocio, Carlos deles_ES
dc.creatorLas-Heras, Fernandoes_ES
dc.identifier.citationG. Álvarez-Narciandi et al., 'Freehand System for Antenna Diagnosis Based on Amplitude-Only Data,' in IEEE Transactions on Antennas and Propagation, vol. 69, no. 8, pp. 4988-4998, Aug. 2021, doi: 10.1109/TAP.2021.3060082.en
dc.description.abstractThis article presents a portable system for freehand antenna diagnosis and characterization based on amplitude-only data. The amplitude-only samples are acquired by moving a handheld probe, which is tracked by a motion capture system, in front of the antenna under test (AUT) aperture. The acquired measurements are processed using the phaseless sources reconstruction method to compute an equivalent current distribution on the AUT aperture. Finally, the radiation pattern of the AUT can be obtained by evaluating the corresponding radiation integrals. Unlike previous work, the use of amplitude-only data avoids the need of a phase reference, paving the way to the diagnosis and characterization of antennas under operational conditions. This fact, together with the handheld capabilities, makes the system very convenient for measurements of already deployed and onboard antennas. Moreover, these amplitude-only acquisitions also simplify the required hardware. The system has been validated through measurements in a wide frequency range from Ka-band up to 300 GHz. Despite that one cannot expect the same degree of accuracy that can be achieved under laboratory conditions (including an anechoic environment and highly accurate positioners), the system shows excellent capabilities to detect malfunctions, such as wrong amplitude/phase distributions, as well as a fair estimation of the far field.en
dc.description.sponsorshipThis work was supported in part by the Ministerio de Ciencia, Innovacion y Universidades of Spain/Fondo Europeo de Desarrollo Regional (FEDER) under Project RTI2018-095825-B-I00, in part by the Gobierno del Principado de Asturias under Project GRUPIN-IDI2018-000191, and in part by the Ministerio de Educacion y Formacion Profesional of Spain under Grant FPU15/06431.en
dc.format.extent11 p.
dc.relation.ispartofIEEE Transactions on Antennas and Propagation, vol. 69, no. 8, pp. 4988-4998
dc.rightsThis work is licensed under a Creative Commons Attribution 4.0 Licenseen
dc.subjectAntenna diagnosisen
dc.subjectAntenna measurementsen
dc.subjectEquivalent currentsen
dc.subjectMillimeter-wave (mm-wave) antennaen
dc.subjectSources reconstruction methoden
dc.titleFreehand system for antenna diagnosis based on amplitude-only dataen
dc.typeArtículo / Artikuluaes
dc.contributor.departmentIngeniería Eléctrica, Electrónica y de Comunicaciónes_ES
dc.contributor.departmentIngeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritzaeu
dc.rights.accessRightsAcceso abierto / Sarbide irekiaes
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-095825-B-I00/ES/en
dc.type.versionVersión publicada / Argitaratu den bertsioaes

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