A gain-enhanced rectangular patch antenna with artificial magnetic conductor ground
A kind of composite antenna with an artificial magnetic conductor ground is designed in this paper. This antenna consists of a 3×3 hexagonal annular gap artificial magnetic conductor unit cells and a rectangular patch antenna fed by coplanar waveguide. The in-phase reflection is suitable for the composite antenna. The distance between the patch antenna and the ground is 0.1λ at zero-phase reflection frequency for gain enhancement and low profile. The experimental results show that the relative operating bandwidth of the composite antenna is 23.3%, and the gain is more than 9dB.