Printed curl CP antenna design

A right hand circular polarised antenna operating at 11.85 GHz is implemented using a printed curl section. The antenna is designed and analysed using Micro-Stripes 7.0, and fabricated on TLY5A substrate. Experimental and theoretical comparisons are made. The gain of the antenna is approximately 8 dB and it provides < 3 dB axial ratio over 8.4%.