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|Title:||RFID reader antennas for TAG detection in self-confined volumes at UHF|
|Authors:||Medeiros, Carla R.|
Costa, Jorge R.
Fernandes, Carlos A.
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.|
|Description:||WOS:000300358000004 (Nº de Acesso Web of Science)|
“Prémio Científico ISCTE-IUL 2012”
|Publisher version:||The definitive version is available at: http://dx.doi.org/10.1109/MAP.2011.5949323|
|Appears in Collections:||CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica|
IT-RI - Artigo em revista internacional com arbitragem científica
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