电子科技大学学报2026，Vol.55Issue(3)：321-332,12.DOI:10.12178/1001-0548.2025055
基于CSRR去耦合结构的八单元紧凑型宽带MIMO天线
Compact eight-element wideband MIMO antenna based on CSRR-decoupling technique
摘要
Abstract
To address the degradation of system performance caused by mutual coupling among antenna elements in multi-input multi-output(MIMO)systems for 5G wireless communications,an eight-element MIMO antenna based improved parallel-combined CSRR decoupling structure design tailored for WiFi applications is proposed.The mutual coupling effect among the MIMO antenna units in a 5G wireless communication system leads to a degradation of the system performance.To address this issue,an improved parallel combined CSRR(complementary split-ring resonator)decoupling structure for an eight-element MIMO antenna design tailored for WiFi application scenarios is proposed.The antenna employs a decoupling technique based on CSRRs,achieving an optimal balance among compact structure,wideband operation,and high isolation performance.Experimental results demonstrate that the antenna achieves a-10 dB impedance bandwidth of 19%,with isolation levels of S21>16.7 dB and S81>13.7 dB within the 5.50 GHz to 6.66 GHz operating band;and the antenna system achieves a radiation efficiency of 50%to 86%,a peak gain of 3.28 dBi,an envelope correlation coefficient(ECC)below 0.1,and a diversity gain exceeding 9.91 dB,meeting the requirements for 5G mobile terminal applications.By analyzing the impact of CSRR geometric configurations and spatial arrangements on system performance,this study reveals that the parallel-combined of CSRR structure enhances the isolation through a triple synergistic mechanism comprising resonance band-stop effect,suppression of surface waves,and near-field electric field reconstruction.The research findings provide theoretical insights and technical pathways for the decoupling design o f high-performance MIMO antennas.关键词
多输入多输出天线/Wi-Fi/互补开口谐振环/宽带/隔离Key words
multiple input multiple output antenna/Wi-Fi/complementary split-ring resonator/wide bandwidth/isolation分类
信息技术与安全科学引用本文复制引用
胡瑶,王永顺,闫宁宁,张利军,范军强..基于CSRR去耦合结构的八单元紧凑型宽带MIMO天线[J].电子科技大学学报,2026,55(3):321-332,12.基金项目
甘肃省科技计划项目(23JRRA1704) （23JRRA1704）
甘肃省重点研发计划(22YF7GE202) （22YF7GE202）
甘肃省科技计划(18JR3RA104) （18JR3RA104）
