Design of a Small Metamtrial Antenna for Millimetric Wave Applications

In this paper, a new design for metamaterial antennas is developed. For this purpose, metamaterial resonant antennas with a mushroom structure based on the zeroth order resonant characteristic of a composite right/lefthanded transmission line (CRLH TL) are investigated. The electromagnetic behavior of this structure is studied, and analytical equivalent-circuit model is proposed. The antenna is proposed for 28 GHz which can be applied for resonance-based millimeter wave circuits. The simulation results show that the antenna has small size and a good bandwidth with range from 27.05 to 28.25 GHz for return loss S11 less than -10 dB. The overall dimension of the antenna is 20.0*22.0*1.6 mm3 including the antenna substrate.