Abstract
In this paper we present a patch antenna with compact low profile for Ultra-High Frequency (UHF) Radio Frequency Identification (RFID), the size tag of the proposed label is 25 × 25 × 3 mm. Both of the radiating part and the feeding portion of the antenna is given located in the same plate for easy implementation. The resistive and reactive components for the input impedance of the antenna can easily be adapted to the variable impedance for the chip size for the loop and the supply for the distance between the feed loop and radiating patch. The patch antenna has a planar profile proposed eliminating the need for and against the multilayer structure thus leading to ease of manufacture and reduced cost. The antenna functions satisfactorily on metal plates, so that it is applicable in many applications. The proposed design is verified by simulation.
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