Skip to main content
Kent Academic Repository

Switched Non-uniformly Distributed-Turns Coil Antenna for Dual-band Operation

Sharma, Ashwani, Garcia Zuazola, Ignacio Julio, Batchelor, John C., Perallos, Asier (2015) Switched Non-uniformly Distributed-Turns Coil Antenna for Dual-band Operation. In: Proceedings of 9th European Conference on Antennas and Propagation (EuCAP), 2015. . pp. 1-4. Institute of Electrical and Electronic Engineers, Lisbon (Access to this publication is currently restricted. You may be able to access a copy if URLs are provided) (KAR id:55901)

PDF Publisher pdf
Language: English

Restricted to Repository staff only
[thumbnail of switched non-uniformly distributed turns coil.pdf]
Official URL:


A switched Non-uniformly Distributed-Turns Coil (NDTC) dual-band antenna for near- and far-field regions of propagation in Radio Frequency IDentification (RFID) reading applications is presented. The operation mode alternate is realized by introducing micro electro-mechanical system (MEMS) switches to a previously reported NDTC design’s radiating element. The final design uses the MEMS to switch between bands, the 13.56MHz of the high frequency (HF) and the

866.6MHz of the ultra-HF (UHF), and the near- and far-field operations as a result. The radii of inner turns of the NDTC were earlier optimized using non-uniformly distributed turns of the coil for maximum magnetic-field (H-field) in the near-field, and the switching allows for the far-field where extended RFID reading ranges are sought using a single antenna unit. Simulated results corroborate the claim and show robust H-field and good radiation efficiency of the antenna.

Item Type: Conference or workshop item (Proceeding)
Uncontrolled keywords: Near- and far-field, H-field, loop antenna, Radio Frequency IDentification, Ultra-High-Frequency.
Subjects: T Technology > TK Electrical engineering. Electronics. Nuclear engineering > TK7800 Electronics > TK7871.6 Antennas and waveguides
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: John Batchelor
Date Deposited: 13 Jun 2016 17:23 UTC
Last Modified: 17 Aug 2022 11:00 UTC
Resource URI: (The current URI for this page, for reference purposes)

University of Kent Author Information

  • Depositors only (login required):

Total unique views for this document in KAR since July 2020. For more details click on the image.