volume | PIER Journals

Abstract

In this paper, a multi-layer decoupling metamaterial unit (ML-DMU) is proposed to reduce the mutual coupling in a Yagi-antenna array. ML-DMU is a three-layer structure which is composed of two types of decoupling unit named top and bottom unit, middle unit, respectively. On this basis, the |S21| of proposed array is reduced to less than -23 dB from 2.36 GHz to 3.02 GHz while the antenna volume is not changed. The maximum gain of antenna element in the proposed antenna is 6.56 dBi at 3GHz, which is greater than the antenna without ML-DMU, but smaller than a single antenna element. Compared with other composite decoupling structures, the decoupling structure proposed in this paper has a more stable radiation performance and is simple and easy to install, which makes it have a good prospect in the field of 5G communication and the field of near-earth ground penetrating radar.

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Mr. Minjie Guo

Dr. Junkang Song

Prof. Xiaohei Yan

Dr. Haiyan Zeng

Dr. Xin Zheng

Dr. Xiumei Huang

Dr. Shanglin Xie