Circularly polarized multimode smart antenna system for micro base station application

IF 0.8 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Frequenz Pub Date : 2023-06-29 DOI:10.1515/freq-2022-0274

Z. Duan, Chengtao Xu, Feng Wang, G. Wen

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引用次数: 0

Abstract

Abstract A smart antenna system suitable for micro base stations is proposed, which consists of three left-handed circularly polarized designs operating at 3.5 GHz. The first one is an eight-port cylindrical conformal antenna with both omnidirectional and directional modes. Its maximum omnidirectional realized gain is 5.0 dBic, and its maximum single/dual beam realized gain under the directional mode on the horizontal plane is 9.4/6.9 dBic. In addition, it can achieve elevational scan from 70° to 110°. The second one is based on the first one with a feeding network, therefore reducing the number of ports to four, achieving a maximum omnidirectional and directional realized gain of 4.2 and 7.9 dBic. The third one is also based on the first one, but with two additional omnidirectional antennas added, making it a hybrid system with enhanced omnidirectional radiation. It has a maximum omnidirectional and directional realized gain of 6.4 and 8.2 dBic. To validate the proposed concept, three prototype arrays are designed, fabricated, and measured, showing that the proposed antenna system can achieve the desired radiation patterns according to different targeted applications.

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微基站用圆极化多模智能天线系统

摘要提出了一种适用于微型基站的智能天线系统，该系统由三个工作频率为3.5的左旋圆极化设计组成 GHz。第一种是具有全向和定向模式的八端口圆柱形共形天线。其最大全向实现增益为5.0 dBic，其在水平面上定向模式下的最大单/双波束实现增益为9.4/6.9 dBic。此外，它还可以实现从70°到110°的仰角扫描。第二个是基于第一个带有馈电网络的，因此将端口数量减少到四个，实现了4.2和7.9的最大全向和定向增益 dBic。第三个也是在第一个的基础上，但增加了两个额外的全向天线，使其成为一个具有增强全向辐射的混合系统。它具有6.4和8.2的最大全向和定向实现增益 dBic。为了验证所提出的概念，设计、制造和测量了三个原型阵列，表明所提出的天线系统可以根据不同的目标应用实现所需的辐射方向图。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frequenz 工程技术-工程：电子与电气

CiteScore

2.40

自引率

18.20%

发文量

审稿时长

3 months

期刊介绍： Frequenz is one of the leading scientific and technological journals covering all aspects of RF-, Microwave-, and THz-Engineering. It is a peer-reviewed, bi-monthly published journal. Frequenz was first published in 1947 with a circulation of 7000 copies, focusing on telecommunications. Today, the major objective of Frequenz is to highlight current research activities and development efforts in RF-, Microwave-, and THz-Engineering throughout a wide frequency spectrum ranging from radio via microwave up to THz frequencies. RF-, Microwave-, and THz-Engineering is a very active area of Research & Development as well as of Applications in a wide variety of fields. It has been the key to enabling technologies responsible for phenomenal growth of satellite broadcasting, wireless communications, satellite and terrestrial mobile communications and navigation, high-speed THz communication systems. It will open up new technologies in communications, radar, remote sensing and imaging, in identification and localization as well as in sensors, e.g. for wireless industrial process and environmental monitoring as well as for biomedical sensing.