南敬昌,曹京涛,杨楠

• 1:辽宁工程技术大学电子与信息工程学院
• 2:辽宁省无线射频大数据智能应用重点实验室
• 3:中山大学电子与信息工程学院
• 4:广东省光电信息处理芯片与系统重点实验室

摘要(Abstract)：

针对MIMO(Multiple-Input Multi-Output)多天线系统中因耦合导致的天线单元辐射方向图畸变问题，提出了一种基于短路枝节的方向图去耦方法。在偶极子辐射臂和地板之间引入的短路枝节可调节耦合单元辐射臂上感应电流的幅度和相位，进而对天线单元畸变的辐射方向图完成波束纠偏和凹陷修复，实现方向图去耦。在5G毫米波n260频段(37～40 GHz)设计、制作了1×4 MIMO印刷偶极子天线实物，实测方向图的最大辐射方向被纠正到正天顶，实测端口隔离度大于23.5 dB。实测与仿真结果吻合良好，验证了提出的方向图去耦方法的有效性。提出的方向图去耦的1×4毫米波MIMO印刷偶极子天线性能良好、易于实现，可应用于毫米波MIMO系统。

关键词(KeyWords)： 方向图去耦;隔离度;印刷偶极子;短路枝节;MIMO;毫米波;5G

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(61971210);国家自然科学基金青年基金(62101609);; 广东省自然科学基金(2021A1515011943)

作者(Author): 南敬昌,曹京涛,杨楠

DOI: 10.14106/j.cnki.1001-2028.2023.0197

参考文献(References)：

• [1] Rappaport T S,Xing Y,MacCartney G R,et al.Overview of millimeter wave communications for fifth-generation (5G) wireless networks—With a focus on propagation models[J].IEEE Transactions on Antennas and Propagation,2017,65(12):6213-6230.
• [2] Xiong W,Kong L,Kong F ,et al.Millimeter wave communication:A comprehensive survey[J].IEEE Communications Surveys & Tutorials,2018,20(3):1616-1653.
• [3] 洪伟.关于毫米波与太赫兹通信的思考[J].中兴通讯技术，2018,24(3):39-42.
• [4] 洪伟，余超，陈继新，等.5G及其演进中的毫米波技术[J].微波学报，2020,36(1):12-16.
• [5] Hu Y,Hong W,Yu C,et al.A digital multibeam array with wide scanning angle and enhanced beam gain for millimeter-wave massive MIMO applications[J].IEEE Transactions on Antennas and Propagation,2018,66(11):5827-5837.
• [6] Pan Y M,Qin X,Sun Y X,et al.A simple decoupling method for 5G millimeter-wave MIMO dielectric resonator antennas[J].IEEE Transactions on Antennas and Propagation,2019,67(4):2224-2234.
• [7] Wang B,Chang Y,Yang S.Performance of the large-scale adaptive array antennas in the presence of mutual coupling[J].IEEE Transactions on Antennas and Propagation,2016,64(6):2236-2245.
• [8] Chen X,Zhang S,Li Q.A review of mutual coupling in MIMO systems[J].IEEE Access,2018,6:24706-24719.
• [9] 南敬昌，韩欣欣，高明明，等.一种K波段小型化MIMO天线设计[J].电子元件与材料，2022,41(10):1085-1092.
• [10] 严冬，郭琪富，程威，等.一种可应用于WLAN的高隔离度双频MIMO天线设计[J].电子元件与材料，2020,39(6):91-96.
• [11] 严冬，丁楚尘，易兆，等.一种高隔离度的双倒L形双频MIMO天线设计[J].电子元件与材料，2020,39(3):82-87.
• [12] Wu K L,Wei C,Mei X,et al.Array-antenna decoupling surface[J].IEEE Transactions on Antennas and Propagation,2017,65(12):6728-6738.
• [13] Tan X,Wang W,Wu Y,et al.Enhancing isolation in dual-band meander-line multiple antenna by employing split EBG structure[J].IEEE Transactions on Antennas and Propagation,2019,67(4):2769-2774.
• [14] Jafargholi A,Jafargholi A,Choi J H.et al.Mutual coupling reduction in an array of patch antennas using CLL metamaterial superstrate for MIMO applications[J].IEEE Transactions on Antennas and Propagation,2019,67(1):179-189.
• [15] Li M,Jiang L,Yeung K L.Novel and efficient parasitic decoupling network for closely coupled antennas[J].IEEE Transactions on Antennas and Propagation,2019,67(6):3574-3585.
• [16] Yang C,Lu K,Leung K W.Dielectric decoupler for compact mimo antenna systems[J].IEEE Transactions on Antennas and Propagation,2022,70(8):6444-6454.
• [17] Tong C W,Yang N,Leung K W,et al.Port and radiation pattern decoupling of dielectric resonator antennas[J].IEEE Transactions on Antennas and Propagation,2022,70(9):7713-7726.
• [18] Sun L B,Li Y,Zhang Z J,et al.Antenna decoupling by common and differential modes cancellation[J].IEEE Transactions on Antennas and Propagation,2021,69(2):672-682.
• [19] Wei C N,Zhang Z Y,Wu K L.Phase compensation for decoupling of large-scale staggered dual-polarized dipole array antennas[J].IEEE Transactions on Antennas and Propagation,2020,68(4):2822-2831.
• [20] Lu R,Yu C,Zhu Y,et al.Millimeter-wave dual-band dual-polarized SIW cavity-fed filtenna for 5G applications[J].IEEE Transactions on Antennas and Propagation,2022,70(11):10104-10112.
• [21] Fan K K,Hao Z C,Yuan Q,et al.Wideband horizontally polarized omnidirectional antenna with a conical beam for millimeter-wave applications[J].IEEE Transactions on Antennas and Propagation,2018,66(9):4437-4448.
• [22] Dadgarpour A,Zarghooni B,Virdee B S,et al.Mutual coupling reduction in dielectric resonator antennas using metasurface shield for 60-GHz MIMO systems[J].IEEE Antennas and Wireless Propagation Letters,2016,16:477-480.
• [23] Tian Y,Ouyang J,Hu P F,et al.Millimeter-wave wideband circularly polarized endfire planar magneto-electric dipole antenna based on substrate integrated waveguide[J].IEEE Antennas and Wireless Propagation Letters,2021,21(1):49-53.