【作者】 王岩； 杜正伟；

【Author】 WANG Yan;DU Zhengwei;Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University;

【机构】 清华大学电子工程系,清华信息科学与技术国家实验室(筹)；

【摘要】 本文提出一款平面宽带双极化交叉偶极子天线。该天线由印制在单块介质板上的两个正交偶极子构成,每个偶极子的两个臂印制在介质板的同一个面上来减小交叉极化,采用集成的微带巴伦来实现不平衡到平衡转换。天线实物测试VSWR<1.5的公共阻抗带宽为1.02 GHz(1.7-2.72 GHz),可以覆盖GSM1800,GSM1900,UMTS,LTE2300和LTE2500频段。在该频段内,天线具有较小的互耦、较低的交叉极化以及稳定的增益,可应用于2G/3G/4G基站。更多还原

【Abstract】 A planar wideband dual-polarized crossed-dipole antenna is proposed. It consists of two perpendicular dipoles, which are printed on a single substrate. The two arms of each dipole are printed on the same side of the substrate to reduce the cross polarization. An integrated microstrip balun is introduced for the unbalance to balance conversion. A prototype shows that the measured overlapped impedance bandwidth of the two ports with VSWR<1.5 is 1.02 GHz(1.7-2.72 GHz). It covers the GSM1800, GSM1900, UMTS, LTE2300, and LTE2500 bands. Within the operating band, the excellent performances of low mutual coupling, low cross polarization, and stable gain are achieved. The proposed antenna is promising for 2G/3G/4G base stations applications.更多还原