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Printed dual‐band base station antenna for GSM/DCS/PCS/UMTS and LTE applications with dual polarization
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2020-04-23 , DOI: 10.1002/cta.2800
Maryam Mohammadifar 1 , Pejman Mohammadi 1 , Yashar Zehforoosh 1
Affiliation  

A new design of the dual‐band and dual‐polarized base station antennas for supporting the mobile communication systems operating at the GSM/DCS/PCS/UMTS and LTE frequency bands is presented. A wide input impedance matching bandwidth is achieved due to a trident‐shaped feeding technique. Two printed dipoles, which are located perpendicularly to each other and fed by stepped‐microstrip lines, establish the proposed antenna. In addition, by locating a low‐profile cavity‐backed structure, as a metal reflector under the antenna, bidirectional radiations of the dipoles are switched to unidirectional radiations with an increase in the gain of the antenna. Measurement results indicate that the proposed antenna is suitable for base station applications at the operating frequencies of 800/900/1800/1900/2300 MHz. The isolation is better than 20 dB, and peak gains of 10.08 and 9.96 dBi are attained at port‐1 and port‐2, respectively. Furthermore, the HPBWs of the antenna in H‐plane is more than 61° for each port. The overall dimension of the antenna is 168 × 168 mm2, which is mounted upon a 222 × 222 mm2 cavity‐backed structure with a depth of 42 mm.

中文翻译:

用于双极化的GSM / DCS / PCS / UMTS和LTE应用的印刷双频基站天线

提出了一种新的双频和双极化基站天线设计,用于支持在GSM / DCS / PCS / UMTS和LTE频段上运行的移动通信系统。由于采用了三叉戟形的馈电技术,因此可以实现较宽的输入阻抗匹配带宽。所建议的天线是两个相互垂直的印刷偶极子,它们由阶梯式微带线馈电。此外,通过在天线下方放置一个低矮的背腔结构作为金属反射器,随着天线增益的增加,偶极子的双向辐射会切换为单向辐射。测量结果表明,所建议的天线适用于工作频率为800/900/1800/1900/2300 MHz的基站应用。隔离度优于20 dB,端口-1和端口-2的峰值增益分别为10.08和9.96 dBi。此外,每个端口的H平面天线的HPBW大于61°。天线的整体尺寸为168×168 mm2,安装在222×222 mm 2的腔背结构上,深度为42 mm。
更新日期:2020-04-23
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