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Low profile RFID transponder on conductive and high permittivity lossy dielectric platforms

The design of folded dipole similar to quarter- wavelength rectangular microstrip patch antenna is shown. A coplanar feeding structure is integrated in the flat radiator and accommodated to accept an RFID microchip to yield efficient operation in body-centric and highly conductive environments. Based on such antenna, an efficient transponder is designed, manufactured and experimentally verified. The transponder showed good isolation between radiating structure and the human body or a conductive platform in 870 MHz band. The reading range of the proposed transceiver is compared with the commercial one.

Low profile antenna, Slotted patch antenna, RFID transponder, Body-centric sensor

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