应用SRR/CSRR去耦的毫米波MIMO天线  

Millimeter-wave MIMO antenna applying SRR/CSRR decoupling

作　　者：南敬昌[1] 苏东蕊 高明明[1] 王艺扉 Nan Jingchang;Su Dongrui;Gao Mingming;Wang Yifei(School of Electronic and Information Engineering,Liaoning Technical University,Huludao 125105,China)

机构地区：[1]辽宁工程技术大学电子与信息工程学院,葫芦岛125105

出　　处：《电子测量与仪器学报》2024年第9期195-202,共8页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(61971210)项目资助。

摘　　要：根据目前无线通信系统的发展趋势,为了大幅度地提高通信效率,针对Ka波段,设计了一款基于开口谐振环和互补开口谐振环的低耦合多输入多输出天线。天线整体尺寸为40 mm×25 mm×1.2 mm。首先,该天线正面由带有空心圆的椭圆形辐射贴片、梯形微带馈线及开口谐振环组成,保证天线工作在Ka波段(26~40 GHz)。其次,该天线背面为刻蚀互补开口谐振环结构的矩形接地板,可以有效地达到去耦的目的,从而实现低耦合的效果。仿真与实测结果表明:工作带宽为26~40 GHz(相对带宽达到50%),回波损耗小于-10 dB,耦合度均小于-26 dB,包络相关系数小于0.001,辐射方向图良好,增益稳定,辐射效率较高。由此,所设计的天线不仅结构简单、尺寸紧凑、频率覆盖范围广,且各项性能占优,可广泛应用于5G毫米波相关领域。综上,应用SRR/CSRR的技术使毫米波MIMO天线的互耦度得到了降低,验证了SRR/CSRR技术作为一种新型去耦技术的可行性和有效性。According to the current development trend of wireless communication systems,in order to significantly improve the efficiency of communications.a low coupling multiple-input multiple-output antenna based on split ring resonator and complementary split ring resonator is designed for Ka-band.The overall dimensions of the antenna are 40 mm×25 mm×1.2 mm.First,the front side of the antenna consists of an elliptical radiating patch with a hollow circle,trapezoidal microstrip feedline and split ring resonator,to ensure that the antenna operates in the Ka-band(26~40 GHz).Second,on the back is a rectangular ground plate with a complementary split ring resonator,which can effectively achieve the purpose of decoupling.Thus realizing the effect of low coupling.Simulated and measured results show that,operating bandwidth of 26~40 GHz(the relative bandwidth of 50%),return loss less than-10 dB,coupling less than-26 dB,envelope correlation coefficient is less than 0.001,good radiation directional map,stable gain,high radiation efficiency.As a result,the designed antenna not only has a simple structure,compact size and wide frequency coverage,but also has superior performance.it can be widely used in 5G millimeter-wave related areas.In summary,the application of SRR/CSRR has led to the reduction of the mutual coupling of millimeter-wave MIMO antenna,the feasibility and effectiveness of the SRR/CSRR technique as a novel decoupling technique are verified.

关 键 词：SRR CSRR 高隔离 毫米波 MIMO 

分 类 号：TN822.8[电子电信—信息与通信工程]