A single-band and dual-band circular polarized antenna by using asymmetric-circular shaped slots

Abstract

In this paper, a single-band and dual-band circular polarized antenna is proposed by using stacked asymmetric-circular shaped slots and its performance is investigated in detail. The proposed circular polarized antenna is implemented by setting the positions of these asymmetric-circular shaped slots to render it suitable for dual-band and single-band applications. The proposed antenna has two radiation layers. The performance of the proposed antenna is numerically investigated in order to achieve a good circular polarization characteristic. The circular polarization function can be adjusted by changing the sizes and positions of these circular slots. Simulated results show that the designed antenna can provide circular polarized characteristics.