Please use this identifier to cite or link to this item:
http://hdl.handle.net/10071/6197
Author(s): | Medeiros, Carla R. Costa, Jorge R. Fernandes, Carlos A. |
Date: | Apr-2011 |
Title: | RFID reader antennas for TAG detection in self-confined volumes at UHF |
Volume: | 53 |
Number: | 2 |
Pages: | 39-50 |
Reference: | Medeiros, C., Costa, J., & Fernandes, C. (2011). RFID reader antennas for TAG detection in self-confined volumes at UHF. IEEE Antennas and Propagation Magazine, 53(2), 39-50. http://dx.doi.org/10.1109/MAP.2011.5949323 |
ISSN: | 1045-9243 |
Keywords: | RFID -- Radio Frequency Identification RFID antennas UHF antennas Microstrip antennas Near-field UHF RFID Smart RFID reading surfaces |
Abstract: | Confinement of the detection region is a critical issue for some important RFID applications, where the coarse location of the object is required along with its identification. In the UHF band, it is a challenge to confine antenna radiation to reasonably sharp interrogation volumes, <; 10λ3, without resorting to physical barriers. This paper presents a novel approach for RFID reader radiating structures that self-confine tag detection to a desired volume, avoiding undesired readings outside the interrogation volume. The proposed solution simultaneously covers the three world-assigned RFID frequency subbands at UHF. To demonstrate the effectiveness of the solution, the proposed configuration was integrated into bookshelves, a conveyor belt system, and a proximity point reader. Together with an appropriate control application, these form the building blocks of a smart store with automatic inventorying and billing capability. The radiating structure concept was explored by full-wave simulations, and it was validated with both near-field measurements and with tag-reading scores. Short demonstration videos are available online. |
Peerreviewed: | Sim |
Access type: | Open Access |
Appears in Collections: | CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica IT-RI - Artigos em revistas científicas internacionais com arbitragem científica |
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