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Institute of Electrical and Electronics Engineers, IEEE Antennas and Wireless Propagation Letters, (14), p. 1342-1345, 2015

DOI: 10.1109/lawp.2015.2405016

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Dual Purpose Near- and Far-Field UHF RFID Coil Antenna With Non-Uniformly Distributed-Turns

Journal article published in 2015 by Ashwani Sharma, Ignacio J. Garcia Zuazola, Ignacio Julio Garcia Zuazola, John C. Batchelor ORCID, Asier Perallos
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

An Ultra-High-Frequency (UHF) Radio Frequency IDentification (RFID) coil antenna with Non-uniformly Distributed-Turns and realized using a segmented-line (SL) is proposed. The Segmented-Line Non-uniformly Distributed-Turns Coil (SL-NDTC) uses non-uniformly distributed turns radii that have been optimized for reactive and radiative read performance. This leads to a dual purpose near- and far-field antenna in a single unit. Simulations show a more focused magnetic-field (H-field)distribution in the near field of the SL-NDTC compared to more conventional coils. Single and dual turn designs are compared to the SL-NDTC antenna to evidence enhanced near- and far-field performance in the latter.