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A printed tri-band UHF RFID tag antenna for Monza4 chip which is mountable on metallic surface is proposed with a miniaturized size of 20mm × 35mm × 1.6 mm. A grounded patch is designed to realize the character of mounting the metallic surface. The meander shape lines are used to miniaturise the proposed antenna. To realize three bands, three microstrip parasitic ground lines of different resonance...
In this paper, a novel low-profile RFID antenna is proposed. Based on original microstrip patch antenna, the tag antenna adopts a shorted stub and H-shape slot. Implementing a shorted stub can easily match the impedance of RFID chip. Using H-shape slot increases the length of current path on patch, miniaturizing the tag antenna. The size of the proposed antenna is 62 × 18 × 0.79mm3 and its simple...
It is well-known that UHF RFID tag performance degrades when placed near metal. While the mechanisms for how dipole performance degrades near metal is known, it is generally not known how the parameters of the T-match change in the presence of metal, and what, if anything, can be done to improve near-metal performance. In this paper, we develop a set of expressions that describe the affect of antenna...
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