RFID TAG ANTENNA FOR METALLIC OR NON-METALLIC SURFACES | Zendy

Bo Tao | Zendy; Hu Sun | Zendy; Omar M. Ramahi | Zendy

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RFID TAG ANTENNA FOR METALLIC OR NON-METALLIC SURFACES

Author(s) -

Bo Tao,

Hu Sun,

Omar M. Ramahi

Publication year - 2015

Publication title -

progress in electromagnetics research c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.341

H-Index - 34

ISSN - 1937-8718

DOI - 10.2528/pierc15071501

Subject(s) - transmission line , ground plane , antenna (radio) , electrical impedance , metal , line (geometry) , patch antenna , reading (process) , materials science , range (aeronautics) , acoustics , plane (geometry) , electrical engineering , optoelectronics , electronic engineering , engineering , physics , composite material , geometry , metallurgy , mathematics , political science , law

A capacitively fed rectangular patch antenna for anti-metal RFID tag was studied. It was found that by using capacitively feeding and a thin micro-strip line, the input impedance could be stabilized with respect to ground plane size. As a result, the reading range degradation was avoided, and the presented antennas have almost the same reading range when used on metal or non-metal objects. The mechanism was explained by a basic antenna design and a transmission line model. Then a more practical compact design having much smaller size was presented. Prototypes of both the basic design and the compact design were fabricated and tested. The testing results validated the effectiveness of the designing method.

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