In order to realize the miniaturization of quasi-Yagi antenna array, an antenna array with split-ring resonators (SRRs) based on\ntwo 7 units quasi-Yagi elements is designed in this paper. The radiation performance of the quasi-Yagi antenna array degrades\nsignificantly when array element spacing is reduced. After embedding SRRs on both sides of the miniaturized dielectric substrate\nsurface, the S parameters and gain of array are significantly better than the array without SRRs, and the adjustable wave beam\nenergy is also enhanced effectively. It indicates that the proposed antenna array with SRRs has good directional radiation\nperformance under the miniaturize process at the operation frequency of 2.45 GHz, which could be widely applied in the fields of\nsmart rail transportation and wireless power transfer.
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