一种应用于CPE的低剖面双频圆极化天线  

A Dual-band Circularly-polarized Antenna with Low Profile for CPE

作　　者：张小雨 孙虎成 ZHANG Xiaoyu;SUN Hucheng(Research Center of Applied Electromagnetics,Nanjing University of Information Science and Technology,Nanjing 210044,China;Jiangsu CICAEET,Nanjing University of Information Science and Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学应用电磁学研究中心,江苏南京210044 [2]南京信息工程大学江苏省大气环境与装备技术协同创新中心,江苏南京210044

出　　处：《无线电工程》2023年第10期2375-2379,共5页Radio Engineering

基　　金：国家自然科学基金(61501243)。

摘　　要：针对客户终端设备(Customer Premise Equipment,CPE)的应用需求,设计了一种低剖面双频圆极化天线。在2.45 GHz,采用了4个偶极子单元阵列产生水平极化全向辐射,并采用内部接地圆环贴片结构产生垂直极化全向辐射。将两部分结构通过耦合器有效连接起来,从而产生了全向圆极化辐射特性。在5.8 GHz,采用了贴片结构产生了定向圆极化辐射特性。通过双工器将2个频段的结构合并起来,实现了低剖面双频圆极化天线。实测结果表明,天线在2个频段均有较好的圆极化辐射性能,验证了该天线设计的有效性。A low-profile dual-band circularly-polarized antenna is designed to meet the requirements of Customer Premise Equipment(CPE).At 2.45 GHz,an array of four dipole elements is used to generate a horizontally-polarized omnidirectional radiation,and the structure of a grounded ring patch between substrates is used to generate a vertically-polarized omnidirectional radiation.The two parts of the structures are effectively connected through a coupler,thus generating an omnidirectional circularly-polarized radiation.At 5.8 GHz,a patch structure is used to generate a directional circularly-polarized radiation.In this way,a low-profile dual-band circularly-polarized antenna is realized by combining the structures of the two frequency bands with a diplexer.Measurement results show that the antenna has good circularly-polarized radiation performances in both frequency bands,which verifies the effectiveness of the antenna structure and design.

关 键 词：客户终端设备 圆极化 双工器 低剖面 

分 类 号：TN82[电子电信—信息与通信工程]