A Compact, Tri-band and Circularly Polarized Patch Antenna Using a Ferrite Material

A single fed, compact and circularly polarized patch antenna operating in three frequency bands is proposed in the present paper. This patch antenna uses a polarized ferrite substrate which therefore has the property of naturally generating circularly polarized waves. The modelling process of a compact antenna having dimensions of
$\frac{\lambda_{0}}{10}\times\frac{\lambda_{0}}{9.5}\times\frac{\lambda_{0}}{27}$
at 3GHz and presenting three circularly polarized modes is exhibited. A prototype measurement has been carried out for an experimental validation of the simulated results.