| 摘要: |
| 针对宽波束天线在5G毫米波宽角扫描阵列的应用，设计了一款基于接地金属柱的毫米波双极化微带天线单元。该天线具有低剖面、宽带、宽波束等优点。天线采用双“H”型缝隙耦合馈电，通过寄生贴片与开槽基板共同辐射展宽波束宽度，通过调节接地金属柱结构改变输入阻抗展宽阻抗带宽。实测结果表明，该天线的3 dB波束宽度在24.5~27.5 GHz的频带内（电压驻波比小于1.8）均大于130°，交叉极化比大于18 dB，两个端口之间的隔离度在频带内均高于26 dB。测试结果与仿真结果吻合较好。 |
| 关键词: 5G 双极化天线 微带天线 毫米波 宽带扫描 宽波束 |
| DOI：10.20079/j.issn.1001-893x.220228003 |
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| 基金项目:广西创新驱动发展专项资金项目(桂科AA19254012) |
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| A Broadband and Wide Beam Dual Polarization Microstrip Antenna in Millimeter Wave Band |
| JIANG Xing,LIU Yao,LI Xiaofeng,LIAO Xin |
| (School of Information and Communication,Guilin University of Electronic Technology,Guilin 541004,China) |
| Abstract: |
| According to the application of wide beam antenna in 5G millimeter wave wide angle scanning array,a millimeter wave dual polarization microstrip antenna unit based on grounded metal column is designed.The antenna has the advantages of low profile,wide band and wide beam.The antenna adopts double “H” slot coupling feed,radiates and widens the beam width through parasitic patch and slotted substrate,and changes the input impedance and widens the impedance bandwidth by adjusting the grounding metal column structure.The measured results show that the 3 dB beam width of the antenna is greater than 130 ° in 24.5~27.5 GHz(voltage standing wave ratio < 1.8),the cross polarization ratio is better than 18 dB,and the isolation between the two ports is higher than 26 dB in the frequency band.The test results are in good agreement with the simulation ones. |
| Key words: 5G dual polarization antenna microstrip antenna millimeter wave wide angle scanning wide beam |
