摘要
设计了一个4单元高隔离度手机天线,由4个辐射单元组成,辐射单元分别位于天线的4个角落。对天线辐射单元进行分析测试,测量天线辐射单元工作频段为3.43 GHz^3.86 GHz,覆盖5G移动通信测试频段。MIMO天线工作频段在端口回波损耗小于-10 dB阻抗带宽条件下,工作频段为3.45 GHz^3.64 GHz;在端口回波损耗小于-6 dB阻抗带宽条件下,天线工作频段为3.23 GHz^3.96 GHz。新设计的圆形开槽结构能减少天线和电子元器件耦合,并且天线具有良好的全向性和辐射特性。MIMO天线在3.2 GHz^4 GHz频率内,天线辐射效率为65%~73.4%。仿真表明,脑部辐射SAR(Specific Absorption Rate)参数小于1.6 W/kg,天线对人体影响较低。
In this paper,the four-unit high-isolation mobile phone antenna is composed of four radiating elements,and the radiating elements are located at four corners of the antenna.The antenna radiating unit is analyzed and tested,and the operating frequency band of the antenna radiating unit is measured from 3.43 GHz to 3.86 GHz,covering the 5G mobile communication test frequency band.The working frequency band of the MIMO antenna is 3.45 GHz^3.64 GHz under the condition that the port return loss is less than-10 dB impedance bandwidth,and the antenna working frequency band is 3.23 GHz^3.96 GHz under the condition that the port return loss is less than-6 dB impedance bandwidth.The newly designed circular slotted structure reduces the coupling of antennas and electronic components,and the antenna has good omnidirectional and radiative characteristics.The MIMO antenna has a radiation efficiency of 65%~73.4% at 3.2 GHz to 4 GHz.The simulated brain radiation SAR(specific absorption rate)parameters are less than 1.6 W/kg,and the antenna has a low impact on the human body.
作者
周凯
王睿乔
赵志恒
Zhou Kai;Wang Ruiqiao;Zhao Zhiheng(School of Information and Communication Engineering,Harbin Engineering University,Harbin 150001,China;China Academy of Sciences Institute of Optoelectronics,Beijing 100004,China)
出处
《电子技术应用》
2019年第11期1-5,9,共6页
Application of Electronic Technique
关键词
5G移动通信
MIMO天线
高隔离度
全向特性
辐射效率
SAR
5G mobile communication
MIMO antenna
high isolation
omnidirectional characteristic
radiation efficiency
SAR
