一种紧凑型三陷波UWB-MIMO天线的设计  

Design of a compact triple-notch UWB-MIMO antenna

作　　者：高明明[1] 王纪禹 南敬昌[1] 韩欣欣 Gao Mingming;Wang Jiyu;Nan Jingchang;Han Xinxin(School of Electronics and Information Enginering,Liaoning Technical Univesily,Huludao 125000,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125000

出　　处：《电子测量与仪器学报》2022年第6期144-151,共8页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金青年科学基金(61701211)、国家自然科学基金(61971210);基于硬件加速的三维重建体育展示平台(Z201100005820010);基于压缩感知的图像传输与重构技术研究(21-2067)项目资助。

摘　　要：提出了一种紧凑型的三陷波超宽带多输入多输出(ultra wideband multiple-input multiple, UWB-MIMO)天线,将半圆形与正六边形结合作为辐射贴片,接地板引入带“梳子”缝隙状T型枝节来实现较高的隔离度,天线尺寸为36 mm×18 mm×1.6 mm。通过在辐射贴片上刻蚀倒“Ω”形槽,在馈线上刻蚀类“U”形槽以及贴片旁引入类“U”形枝节的方式实现WiMAX(3.3~3.6 GHz)、WLAN部分频段(5.725~5.825 GHz)和X波段下行频率(7.25~7.75 GHz)3个频段的陷波。仿真与实测结果均表明,该UWB-MIMO天线的工作带宽为1.9~10.6 GHz,相对带宽达到139%,3个陷波频段为2.9~3.7 GHz、5.6~6.0 GHz和7.05~7.76 GHz,且隔离度大于20 dB,包络相关系数ECC<0.003,说明天线在各方面特性良好,可以满足UWB-MIMO天线的要求。In this paper, a compact triple-notch ultra-wideband multiple-input multiple(UWB-MIMO) antenna is proposed, which combines a semicircle and a regular hexagon as a radiating patch, and a grounding plate is introduced into the belt. “Comb” slot-like T-shaped branches to achieve higher isolation, the antenna size is 36 mm×18 mm×1.6 mm. WiMAX(3.3~3.6 GHz) and WLAN parts are realized by etching the inverted “Ω”-shaped groove on the radiation patch, etching the “U”-shaped groove on the feeder and introducing the “U”-shaped branch next to the patch. Frequency band(5.725~5.825 GHz) and X-band downlink frequency(7.25~7.75 GHz) are notched in three frequency bands. Both simulation and actual measurement results show that the working bandwidth of the UWB-MIMO antenna is 1.9~10.6 GHz, the relative bandwidth reaches 139%, and the three notch frequency bands are 2.9~3.7 GHz, 5.6~6.0 GHz and 7.05~7.76 GHz, the degree of isolation is greater than 20 dB, and the envelope correlation coefficient ECC is less than 0.003, indicating that the antenna has good characteristics in all aspects and can meet the requirements of UWB-MIMO antennas.

关 键 词：UWB-MIMO 三陷波 “梳子”缝隙状T形枝节 倒“Ω”形槽 类“U”形枝节 

分 类 号：TN822.8[电子电信—信息与通信工程]