| 基于特征模理论的低剖面MIMO立方体天线 |
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| 引用本文： | 于琪,陈益凯,杨仕文.基于特征模理论的低剖面MIMO立方体天线[J].南京气象学院学报,2019,11(1):40-46. |
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| 作者姓名： | 于琪 陈益凯 杨仕文 |
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| 作者单位： | 电子科技大学 电子科学与工程学院, 成都, 611731,电子科技大学 电子科学与工程学院, 成都, 611731,电子科技大学 电子科学与工程学院, 成都, 611731 |
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| 基金项目： | 国家自然科学基金（61671127，61631006，61721001） |
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| 摘 要： | 基于特征模理论，给出了一种适用于室内环境的16端口多输入多输出（MIMO）立方体天线设计.首先利用特征模理论在对一个矩形金属片进行模式分析的基础上，同时激励金属片的不同模式，设计了一款工作于5.150~5.875 GHz的高隔离度的4端口MIMO天线单元，并引入人工磁导体（AMC）表面代替原天线的地板，大大降低了天线的剖面.进一步地，围绕立方体环绕一周组成4×4端口的MIMO立方体天线，在较小的空间内实现了天线的多端口与多极化.仿真和测试结果表明：天线在5.150~5.875 GHz频段内端口反射系数Sii<-10 dB，端口间隔离度|Sij|>20 dB.
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| 关 键 词： | 特征模理论 MIMO立方体天线 人工磁导体 低剖面 |
| 收稿时间： | 2018/11/28 0:00:00 |
Low-profile MIMO cube antenna based on characteristic mode theory |
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| YU Qi,CHEN Yikai and YANG Shiwen.Low-profile MIMO cube antenna based on characteristic mode theory[J].Journal of Nanjing Institute of Meteorology,2019,11(1):40-46. |
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| Authors: | YU Qi CHEN Yikai and YANG Shiwen |
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| Institution: | School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731,School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731 and School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731 |
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| Abstract: | Based on the characteristic mode theory, a 16-port multiple-input multiple-output (MIMO) cube antenna design for an indoor environment is presented. First, a high-isolation 4-port MIMO antenna unit operating at 5.150-5.875 GHz is designed by exciting different modes of a rectangular plate simultaneously, based on a modal analysis using the characteristic mode theory. An artificial magnetic conductor (AMC) surface is introduced to replace the reflector of the original antenna, which greatly reduces the profile of the antenna;it is also used to surround the antenna to form a 16-port (4×4) MIMO cube antenna. This antenna fulfils the multi-port and multi-polarization requirement within a small space. The simulation and experimental results show that the antenna operates with a port reflection coefficient Sii < -10 dB and port isolation |Sij| > 20 dB in the 5.150-5.875 GHz band. |
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| Keywords: | characteristic mode theory MIMO cube antenna artificial magnetic conductor low-profile |
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