Design of broadband dual-polarized antenna with 
integrated Marchand balun

doi:10.1016/S1005-8885(15)60660-4

Acta Metallurgica Sinica(English letters) ›› 2015, Vol. 22 ›› Issue (3): 118-124.doi: 10.1016/S1005-8885(15)60660-4

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Design of broadband dual-polarized antenna with integrated Marchand balun

Hao Honggang(1), He Yong(1), Ren Yi(1), Liu Yanhui(2)

1. College of Electroning Engineering, Chongqing University of Posts and Telecommunications, 2. School of Physics and Mechanical and Electrical Engineering, Xiamen University

收稿日期:2014-06-30 修回日期:2014-11-21 出版日期:2015-06-30 发布日期:2015-06-24
通讯作者: Ren Yi, E-mail: renyi@cqupt.edu.cn E-mail:renyi@cqupt.edu.cn
基金资助:
the National Natural Science Foundation of China (61301032).

Design of broadband dual-polarized antenna with integrated Marchand balun

Hao Honggang(1), He Yong(1), Ren Yi(1), Liu Yanhui(2)

1. College of Electroning Engineering, Chongqing University of Posts and Telecommunications, 2. School of Physics and Mechanical and Electrical Engineering, Xiamen University

Received:2014-06-30 Revised:2014-11-21 Online:2015-06-30 Published:2015-06-24
Contact: Ren Yi, E-mail: renyi@cqupt.edu.cn E-mail:renyi@cqupt.edu.cn
Supported by:
the National Natural Science Foundation of China (61301032).

摘要/Abstract

摘要： A design of broadband dual-polarized antenna with low cross polarization and high isolation was presented. The antenna is composed of a cross dipole, a folded ground, two feeding networks, and a reflector. The impedance bandwidth was enhanced by utilizing the mutual coupling between the two dipoles. A kind of meandering folded Marchand balun was skillfully integrated on the support column of the antenna to excite the dipole differentially, which can deliver both balanced (within 0.5 dB) power splitting and consistent (±5°) phase shifting from 1.71 GHz to 2.17 GHz. The standing wave ratios (SWRs) of each port are less than 1.5. By using this feeding network, the antenna has good performance in isolation (> 45 dB) and cross polarization (> 30 dB) over the entire operating frequency band. Moreover, the gain (~8.6 dB) of the proposed antenna is stable with frequency and the antenna structure is very firm due to the support column. The proposed antenna can be easily formed an array for digital cellular system (DCS), personal communications service (PCS) and 3rd generation (3G) applications.

关键词: Dual-polarized antenna, cross dipole, balun, high isolation, low cross polarization

Abstract: A design of broadband dual-polarized antenna with low cross polarization and high isolation was presented. The antenna is composed of a cross dipole, a folded ground, two feeding networks, and a reflector. The impedance bandwidth was enhanced by utilizing the mutual coupling between the two dipoles. A kind of meandering folded Marchand balun was skillfully integrated on the support column of the antenna to excite the dipole differentially, which can deliver both balanced (within 0.5 dB) power splitting and consistent (±5°) phase shifting from 1.71 GHz to 2.17 GHz. The standing wave ratios (SWRs) of each port are less than 1.5. By using this feeding network, the antenna has good performance in isolation (> 45 dB) and cross polarization (> 30 dB) over the entire operating frequency band. Moreover, the gain (~8.6 dB) of the proposed antenna is stable with frequency and the antenna structure is very firm due to the support column. The proposed antenna can be easily formed an array for digital cellular system (DCS), personal communications service (PCS) and 3rd generation (3G) applications.

Key words: Dual-polarized antenna, cross dipole, balun, high isolation, low cross polarization

中图分类号:

TN82

Hao Honggang(1), He Yong(1), Ren Yi(1), Liu Yanhui(2). Design of broadband dual-polarized antenna with integrated Marchand balun [J]. Acta Metallurgica Sinica(English letters), 2015, 22(3): 118-124.

参考文献

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Design of broadband dual-polarized antenna with integrated Marchand balun

Design of broadband dual-polarized antenna with integrated Marchand balun

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