一种应用于LTE和5G中频段的宽带双极化基站天线

设计了一款适用于LTE和5G中频段的宽带双极化微基站天线.该天线主要由四部分组成:主辐射器,馈电巴伦结构,反射面和方形寄生贴片.其中辐射面上的圆形连接条产生多个电流路径,并引入额外的谐振点实现了阻抗匹配,同时方形寄生贴片有效扩展了高频段的带宽.实测结果表明,该天线具有50％(2.2～3.65 GHz)的阻抗带宽,反射系...

A Broadband Bipolar Base Station Antenna for LTE and 5G Medium Frequency Bands

A broadband bipolar micro-base station antenna for LTE and 5G medium frequency is designed. The antenna consists of four main parts: the main radiator, the feed balun structure, the reflective surface and the square parasitic patch. The circular connecting strip on the radiation surface produces multiple current paths and introduces additional resonance points for impedance matching, while the square parasitic patch effectively extends the bandwidth of the high band. The measured results show that the antenna has an impedance bandwidth of 50% (2.2-3.65 GHz), the reflection coefficient is less than -15 dB, and the port isolation is greater than 28 dB. The average gain of the antenna in the frequency band is 8.2 dBi, the half-power beam width of the antenna E face is 65°±5° , and the cross-polarization ratio is greater than 26 dB. A quadratic antenna array is constructed using this antenna unit. The antenna and its array have the advantages of strong structure, high isolation, high gain and smaller physical size. It can be a good candidate for LTE/5G indoor base station antenna.