Circularly polarized antenna for WLAN and WiMAX applications
A new circularly polarized CPW antenna is presented. Total size of the antenna is 60  60  0.8 mm3 which is fabricated on a low cost FR4 substrate. The measured bandwidth of the proposed antenna is from 2 up to 6.68 GHz for VSWR < 2, and also the measured axial-ratio (AR) bandwidth is almost 4.1 GHz from 2.34 up to 6.44 GHz.  2012 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2012.
axial ratio (ar) microstrip circularly polarized square slot antenna (cpssa)