Circularly polarised square patch antenna fed by coplanar waveguide
Résumé
A circularly polarised patch antenna, fed by a coplanar waveguide, is investigated experimentally. The antenna is excited by a couple of 100 Ω slotlines which are combined to obtain a 50 Ω coplanar waveguide. The axial ratio and the bandwidth of the antenna are similar to those obtained with other types of feeding.