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Design, simulation and fabrication of low cost UHF RFID reader antenna for hospital applications

Oliveira, V. ; Fontgalland, G. ; Rodrigues, R. ; Silveira, Tagleorge M. ; Melo, C. ; Fontgalland, I.

Design, simulation and fabrication of low cost UHF RFID reader antenna for hospital applications, Proc German Microwave Conf. - GeMiC, Freiburg, Germany, Vol. , pp. - , March, 2018.

Digital Object Identifier: 10.23919/GEMIC.2018.8335022

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Abstract
This paper presents the development of a low-cost single band antenna for fixed ultra-high frequency (UHF) radio-frequency identification (RFID) reader for surveillance and tracking of high valuable items in hospitals. The proposed low-cost antenna is made of recycled aluminum sheets consisting of two parallels plates (a ground plane and a radiator) with an L-shaped metal strip between them and four short plates (stubs) for tuning. A bandwidth of 39.6 MHz and 3.1 dBi for directivity at 915 MHz was obtained in CST Microwave Studio. Experimental results in an anechoic chamber of a fabricated prototype showed that the antenna achieved the desired performance, with bandwidth of 51.6 MHz. In the end, an application was proposed, and the antenna was successful in identifying assorted items with UHF tags attached at various distances.