A Broadband Dual-Polarized Planar Antenna for 2G/3G/LTE Base Stations
A Broadband Dual-Polarized Planar Antenna for 2G/3G/LTE Base Stations
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适用于 2G/3G/LTE 基站的宽带双极化平面天线
DOI：
10.1109/tap.2014.2330596
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发表时间：
2014-06
影响因子：
5.7
通讯作者：
Fu HuanZhan
中科院分区：
文献类型：
--
作者：
Cui YueHui;Li RongLin;Fu HuanZhan
提出了一种用于2G/3G/LTE基站的宽带双极化平面天线。双极化天线由两个相互垂直交叉的蝴蝶结振子组成。每个蝴蝶结偶极子由微带短截线激励，微带短截线由同轴线直接馈电，使双极化天线完全平面化。由于两个交叉的蝴蝶结偶极子之间的耦合，实现了宽带宽。结果表明，双极化天线在回波损耗大于15 dB时，带宽为45%（1.7-2.7 GHz），两极化输入端之间的隔离度大于30 dB。双极化天线具有约65 °的半功率波束宽度（HPBW）和对于倾斜±45°极化的8.5dBi的平均增益。研制了一种用于基站的8单元双极化平面天线阵。天线阵列的带宽为56%（1.63-2.9 GHz）。该阵列的天线增益约为16 dBi，每个极化方向的HPBW为65±8°。
A broadband dual-polarized planar antenna is proposed for 2G/3G/LTE base stations. The dual-polarized antenna is composed of two perpendicularly crossed bow-tie dipoles. Each bow-tie dipole is excited by a microstrip stub that is directly fed by a coaxial line, making the dual-polarized antenna full planar. Due to the coupling between two crossed bow-tie dipoles, a broad bandwidth is achieved. It is shown that the dual-polarized antenna has a bandwidth of 45% (1.7-2.7 GHz) for return loss >15 dB with an isolation of higher than 30 dB between two polarization input ports. The dual-polarized antenna has a half-power beam width (HPBW) of around 65 ° and an average gain of 8.5 dBi for slant ±45° polarizations. An 8-element dual-polarized planar antenna array is developed for base station applications. A bandwidth of 56% (1.63-2.9 GHz) is obtained for the antenna array. The antenna gain of the array is about 16 dBi and the HPBW is 65±8° for each polarization.
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