Abstract
The tag antenna has been particularly influential in the performance of RFID system. Many applications require tag antennas to be of low profile mounted on electrically metallic objects. Several designs have been developed for RFID patch-type antennas or planar inverted-F antennas (PIFAs) mountable on metallic objects. Although most of these reported antennas can give the required reading-range performance, they may suffer from inconvenient mounting on metallic object because of their high profile. However, it is inherent for a patch-type antenna that lowering the antenna profile would degrade its radiation efficiency and antenna gain. Hence, an effort is being made to further improve the antenna gain of the low-profile patch antenna needed to provide the applicable reading range in a RFID application. In this paper, we designed meander-type microstrip patch antenna which displays the best performance at the frequency of 910 MHz, the RFID standard available in metal environment. Square-shaped power feeder, connected to the body for coordination with common-use tag chip attached to the antenna, is located in the body, while the patch device is designed in the form of multiple meanders to efficiently scale back the size of body of antenna. Then the characteristics of bandwidth, efficiency, and recognition distance are compared and analyzed by the size of proposed antenna and the number of being folded. It was found that the efficiency and gain characteristics changes by the size of antenna and the number of being folded in the form of meander have a significant influence over recognition distance of antenna.
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© 2013 Springer Science+Business Media Dordrecht
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Park, C. (2013). Microstrip Patch Antenna on UHF Band Using Multiple Meander for Metal Attached in U-City. In: Kim, K., Chung, KY. (eds) IT Convergence and Security 2012. Lecture Notes in Electrical Engineering, vol 215. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-5860-5_75
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DOI: https://doi.org/10.1007/978-94-007-5860-5_75
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