Abstract
This paper proposed a low profile RFID tag antenna design for metallic objects application. The antenna structure consists of two non-connected capacitance loads and two rectangular patches electrically connected through vias to the ground plane to form an RFID tag antenna that is suitable for mounting on metallic objects. The experimental tests show that the maximum read range of RFID tag placed on a metallic object and in the air are approximately 2.5 and 2.3 m, respectively. Hence, it is suitable for RFID applications when the tag needs to be mounted directly on a metallic object, and the thickness of the tag is of major concern. Simulation and measurement results of the proposed RFID metal tag antenna are also presented in this paper.
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