A high gain circular polarization antenna using metamaterial slabs

In this paper, we propose an advanced high gain circular polarization antenna consisting of metamaterial slabs. The high gain property is achieved by using metamaterial slabs with periodic circular lattices while circular polarization is obtained by inserting fan-shaped patches in the circular lattices. In addition, the right/left handed polarization is easily controlled by rotating metamaterial slabs. Details of the design, fabrication, test, and performance of the proposed antenna are presented.