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International Journal of Antennas and Propagation
Volume 2017, Article ID 2470291, 7 pages
Research Article

Design of Dual Mode RFID Antenna for Inventory Management and IV Fluid Level Warning System

1Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan
2Department of Electrical Engineering, Southern Taiwan University of Science and Technology, Tainan 710, Taiwan
3School of Data and Computer Science, Sun Yat-sen University, Guangzhou, Guangdong 510006, China

Correspondence should be addressed to Ching-Hsing Luo;

Received 26 July 2016; Revised 8 December 2016; Accepted 28 December 2016; Published 12 April 2017

Academic Editor: Luciano Tarricone

Copyright © 2017 Ssu-Han Ting et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Radio frequency identification (RFID) readers are powered RF devices that communicate with an RFID tag to read necessary information. Using this capability, a dual use system for short distance inventory management and moderate distance automatic warning system for low intravenous (IV) fluid levels is designed. The RFID is affixed on the IV drip bag; the fluid in bag affects the antenna transmission distance by fluid dielectric conditions. This allows for two different operational modes (moderate and short distance). For pharmaceutical management, a handheld RFID reader can be used for short distance application. Another stationary RFID system can serve as a warning system for long distance application such as hospital care.