Design of efficient electrically small dual band monopole antenna using negative permittivity metamaterial structures

The dual band EESA using negative permittivity MTM structures is introduced and fabricated. The proposed negative permittivity MTM structures are operated by inductance L
₃
and L
₄
. The proposed EESA, which is compared with calculations of Chu limits, has very low Q, wide impedance bandwidth and high efficiency is obtained. Therefore, proposed EESA will be applied to new generation wireless communication systems for required small antenna.