摘要
文中提出一种双线极化、低剖面的新型通信基站天线,该天线的特点在于具有相对较低的剖面,同时在两端口间的隔离度和交叉极化比指标也相当优秀。它是由一块铝制圆形薄片、一个铝制边框和一块双面印刷电路板组成,印刷电路形结构的十字渐变缝隙。仿真和测试结果表带宽为806～1 010 MHz。天线的水平面和垂直面半功率波束宽度分别为88.22°±3.38°和71.37°±5.25°,交叉极化比最高为-28.9 dB。除此之外,该天线还具有易于加工组装、成本低等许多优点。
A new dual.linear polarization and low-profile antenna used for modern communication base station is proposed.The antenna has the advantages of relatively low profile structure,high cross-polarization factor and isolation between two ports.The antenna is composed of an aluminum thin circular slice,an aluminum frame and a two-sided printed.circuit board(PCB).Two U-shaped feeding networks with Wilkinson power divider functions and a cross gradient slot with T.shaped structure are slotted on the two sides of PCB.Simulation and measurement results show that the port isolation of the antenna within the working bands is lower than-30 dB,and the antenna covers the 806~1 010 MHz at-10 dB return loss;the half power beam widths(HPBWs)of the antenna are respectively 88.22°±3.38°(at H.Plane)and 71.37°±5.25°(at V.Plane),and the cross.polarization ratio can reach up to-28.9 dB at most.Moreover,the proposed antenna has the advantages of easy processing and assembly,and low cost,and can work at the bands of GSM and CDMA in modern communication system.
作者
陶长剑
欧毅
欧文
TAO Changjian;OU Yi;OU Wen(3. University of Chinese Academy of Sciences,Beijing 100029,China;Jiangsu R&D Center for Internet of Things,Wuxi 214135,China)
出处
《现代电子技术》
北大核心
2019年第7期5-10,共6页
Modern Electronics Technique
基金
国家重点研发计划(2017YFF0107206)~~
关键词
基站天线
双极化
低剖面天线
十字形缝隙
高隔离度
寄生贴片
base station antenna
dual-polarization
low-profile antenna
cross-slot
high isolation
parasitic patch
