Localization of Compact Circularly Polarized RFID Tag Using ToA Technique

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dc.contributor.authorKhan, Umar Hasan
dc.contributor.authorRasheed, Hira
dc.contributor.authorAslam, Bilal
dc.contributor.authorFatima, Ammara
dc.contributor.authorShahid, Laiba
dc.contributor.authorAmin, Yasar
dc.contributor.authorTenhunen, Hannu
dc.coverage.issue1cs
dc.coverage.volume26cs
dc.date.accessioned2017-04-18T08:21:44Z
dc.date.available2017-04-18T08:21:44Z
dc.date.issued2017-04cs
dc.description.abstractA compact, flexible crossed-dipole circular polarized antenna using commercially available paper substrate is presented which caters North American frequency band. The crossed-dipoles have meandered lines for reduction of size as well as increased inductivity in the antenna. Dipoles have asymmetric T-shaped rectangular endings to provide the required compactness. Two semicircles are induced between the orthogonal dipoles and meandering matching structure to accomplish circular polarization excitation. Good impedance matching with the chip is achieved through a modified meander line matching structure. The proposed design dimensions are 32 × 32 × 0.4 mm3. Systematic analysis revealed the results comprising circular polarization 3dB-AR bandwidth of 11MHz (909–920 MHz) and power transmission coefficient bandwidth of 36MHz (900–936 MHz). Time delay between interrogating signal and backscattered signal is measured and relative distance is calculated. Linear Least Square (LLS) method is applied to approximate the position of tag in interrogation area. The proposed tag is placed at known locations and its position is measured to analyze accuracy of the method by simulating the positioning algorithm code in MATLAB. Six valid tag positions 0.5–2 m read range and 0°–150° angular resolution has been investigated.en
dc.formattextcs
dc.format.extent147-153cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2017 vol. 26, č. 1, s. 147-153. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2017.0147en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/64719
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2017/17_01_0147_0153.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectCircular polarized antennaen
dc.subjectpaper substrateen
dc.subjectimpedance matchingen
dc.subjectRFIDen
dc.subjectRFICen
dc.subjecttime of arrivalen
dc.titleLocalization of Compact Circularly Polarized RFID Tag Using ToA Techniqueen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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