无线电工程2025，Vol.55Issue(8)：1618-1626,9.DOI:10.3969/j.issn.1003-3106.2025.08.008
基于FSS多维协同去耦机制的MIMO天线设计
Design of MIMO Antenna Based on FSS Multi-dimensional Collaborative Decoupling Mechanism
摘要
Abstract
Based on the requirements for miniaturization,high isolation,and low correlation of Multiple Input Multiple Output(MIMO)antennas in wireless communication systems,a MIMO antenna based on the multi-dimensional collaborative decoupling mechanism of metamaterials has been designed.This antenna uses a rectangular patch antenna as the basic antenna unit and is fed by microstrip lines.The impedance matching of the antenna is optimized by etching U-shaped slots on the radiation patches.A T-shaped parasitic branch is loaded on the antenna's ground plane,which initially reduces the coupling between antenna elements by introducing a new current path.Additionally,a Frequency Selective Surface(FSS)array is loaded between the antenna elements to block the propagation of surface electromagnetic waves through the reflective properties of the FSS array.By utilizing the collaborative decoupling of the T-shaped branch and the FSS array,a more effective isolation is achieved.Simulation and test results show that the operating bandwidth of the antenna is 4.0～4.6 GHz,with isolation within the band consistently above 20 dB(up to 54 dB),and the Envelope Correlation Coefficient(ECC)of the antenna is<0.025,with a maximum gain of 4.55 dBi.This antenna features high-frequency long-distance transmission capability,high isolation,and miniaturization,and the measured results are in good agreement with the simulation data.关键词
多输入多输出天线/频率选择表面/高隔离/低剖面/协同去耦Key words
MIMO antenna/FSS/high isolation/low profile/collaborative decoupling分类
信息技术与安全科学引用本文复制引用
丁卓航,卞立安,李高升,黄俊,曾钦云..基于FSS多维协同去耦机制的MIMO天线设计[J].无线电工程,2025,55(8):1618-1626,9.基金项目
国家自然科学基金(52307157) National Natural Science Foundation of China(52307157) （52307157）
