Title :
A Fractal-Based Circularly Polarized UHF RFID Reader Antenna
Author :
Raviteja, Chinnambeti ; Varadhan, Chitra ; Kanagasabai, Malathi ; Sarma, Aswathy K. ; Velan, Sangeetha
Author_Institution :
Dept. of Electron. & Commun. Eng., Anna Univ., Chennai, India
Abstract :
This letter presents the design of a coplanar waveguide (CPW) circularly polarized antenna for the central frequency 900 MHz, it comes in handy for radio frequency identification (RFID) short-range reading applications within the band of 902-928 MHz where the axial ratio of proposed antenna model is less than 3 dB. The proposed design has an axial-ratio bandwidth of 36 MHz (4%) and impedance bandwidth of 256 MHz (28.5%).
Keywords :
UHF antennas; antenna radiation patterns; coplanar waveguides; radiofrequency identification; coplanar waveguide circularly polarized antenna; fractal-based circularly polarized UHF RFID reader antenna; frequency 256 MHz; frequency 36 MHz; frequency 900 MHz; frequency 902 MHz to 928 MHz; radio frequency identification short-range reading applications; Coplanar waveguides; Fractals; Polarization; Radiofrequency identification; Slot antennas; Circular polarization; coplanar waveguides (CPWs); fractal antennas; radio frequency Identification (RFID); ultra-high frequency (UHF);
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2308953
