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Capacitively Loaded, Inductively Coupled Fed Loop Antenna With an Omnidirectional Radiation Pattern for UHF RFID Tags
KTH, School of Electrical Engineering (EES), Electromagnetic Engineering.ORCID iD: 0000-0002-3401-1125
2013 (English)In: IEEE Antennas and Wireless Propagation Letters, ISSN 1536-1225, E-ISSN 1548-5757, Vol. 12, 1161-1164 p.Article in journal (Refereed) Published
Abstract [en]

A capacitively loaded, inductively coupled fed loop antenna with an omnidirectional radiation pattern for UHF radio frequency identification (RFID) tags is proposed. The inductively coupled feed structure is beneficial for conjugate impedance matching. The loaded capacitors in the radiating and feeding loops allow for easy control of the resonant frequency and the antenna reactance, respectively. The omnidirectional radiation pattern on the horizontal plane makes the proposed tag insensitive to be mounted on different target objects. With a small size of 43 x 43 mm(2), the measured maximum reading range of the prototype is 9.5 m with a total transmitted power of 4.0 W effective isotropic radiated power (EIRP).

Place, publisher, year, edition, pages
2013. Vol. 12, 1161-1164 p.
Keyword [en]
Capacitive load, inductive feed, omnidirectional, radio frequency identification (RFID), UHF
National Category
URN: urn:nbn:se:kth:diva-153442DOI: 10.1109/LAWP.2013.2281070ISI: 000325416700004ScopusID: 2-s2.0-84885108885OAI: diva2:753265

QC 20141007

Available from: 2014-10-07 Created: 2014-10-03 Last updated: 2014-10-07Bibliographically approved

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He, Sailing
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