This paper presents the performance improvement of a microstrip patch antenna (MPA) using a novel double‐layer concentric rings metaplate (DLCRM) for fifth‐generation (5G) millimeter wave (mmWave) applications. To improve the performance of the proposed antenna, a DLCRM is placed above the MPA having an air gap. The design procedure is explained using the different shapes of DLCRM, and the double negative (DNG) characteristic of metamaterial is verified. Moreover, the effects of the DLCRM on the MPA are validated by experimental results. The proposed antenna attains a high‐gain of 11.59 dBi and has an impedance bandwidth from 27.1 GHz to 29.56 GHz (8.68%) which is the potential 5G mmWave band. The measurement result shows that the bandwidth of the antenna is improved by 2.04%, and broadside gain is increased by 4.69 dBi compared to the MPA without a DLCRM. Thus, the antenna provides high gains with wide bandwidth that makes it a suitable candidate for 5G mmWave applications.

中文翻译：

---

使用新型双层同心环金属板改进微带贴片天线的性能，适用于5G毫米波应用

本文介绍了使用新颖的双层同心环金属板（DLCRM）对第五代（5G）毫米波（mmWave）应用进行微带贴片天线（MPA）的性能改进。为了提高建议天线的性能，将DLCRM放置在具有气隙的MPA上方。使用不同形状的DLCRM解释了设计过程，并验证了超材料的双负（DNG）特性。此外，实验结果证实了DLCRM对MPA的作用。拟议中的天线可实现11.59 dBi的高增益，并具有27.1 GHz至29.56 GHz（8.68％）的阻抗带宽，这是潜在的5G mmWave频段。测量结果表明，天线带宽提高了2.04％，宽边增益提高了4。与没有DLCRM的MPA相比，为69 dBi。因此，该天线可提供宽带宽的高增益，使其成为5G mmWave应用的合适候选者。