Design and simulation of a S-band high gain antenna with metamaterial lens

The patch antenna with metamaterial lens can effectively enhance the gain of the antenna. A new type of metamaterial lens is proposed in this paper, it is easy to distinguish as double negative metamaterial, presenting a negative permitivity and a negative permeability simultaneously. The novel structure can work at a lower frequency and the passband of metamaterial lens can get a good performance in a wide band. Moreover, the designed metamaterial lens do not change the S-parameter of the patch antenna. With the new structure of the metamaterial lens, the gain can be enhanced by 2 dB.