Compact Fractal Reader Antenna for RFID Applications

Abstract

A compact fractal reader antenna working at 2.45 GHz for RFID applications is proposed. The proposed antenna is designed on an economical FR-4 substrate with relative permittivity of 4.4 and a thickness of 1.6 mm. The antenna works in the frequency range of 2.4 GHz to 2.65 GHz and has a peak gain of 2 dBi with a size of 30mm $\times 20$ mm $\times 1.6$ mm. The antenna is designed and characterized in the commercial full-wave simulator, Ansys HFSS, to check the validity of the design approach.