Abstract
BeiDou-3 navigation satellite system was officially opened in 2020. While bringing high-performance services to people around the world, the navigation system requires well-designed BeiDou antennas. In this paper, we propose a wideband circularly polarized high-performance BeiDou antenna. The antenna realizes wideband circularly polarized radiation through a four-port sequential feed network, and the phase imbalance of the feed network from 1.05 to 1.80 GHz is less than 7°. The manufactured antenna demonstrates a return loss of more than 13 dB and an axial ratio <3 dB over the entire global navigation satellite system (GNSS) frequency band. The right-handed circular polarization (RHCP) gain of the proposed antenna is greater than 4 dB in the GNSS low-frequency band and can reach more than 7.1 dB in the high-frequency band. Dimension of the proposed antenna is 120 mm×120 mm×20 mm, i.e., 0.54λo×0.54λo×0.09λo, where λo is the wavelength of the center frequency. The proposed antenna connected to a GNSS receiver has tracked 12 BeiDou satellites with C/N0 ratios of GNSS signals greater than 30 dB. Such a high-performance antenna provides a basis for high-quality positioning services.
摘要
北斗三号卫星导航系统于 2020 年正式启用, 为全球人民带来高性能服务的同时, 导航系统也对北斗天线的设计提出更高要求. 本文提出一种宽带圆极化高性能北斗天线. 该天线通过四端口顺序馈电网络实现宽带圆极化辐射, 馈电网络从 1.05 GHz 到 1.80 GHz 的相位不平衡度小于 7°. 制造的天线在整个全球导航卫星系统(GNSS)频带上的回波损耗大于 13 dB, 轴比< 3 dB, 右旋圆极化增益(RHCP)在GNSS低频段大于 4 dB, 在高频段可达 7.1 dB 以上. 本文天线尺寸为 120 mm×120 mm×20 mm, 即 0.54λo×0.54λo×0.09λo, 其中λo是中心频率波长. 设计的天线连接到GNSS接收机上搜索到 12 颗北斗卫星, GNSS 信号的信噪比(C/N0)大于 30 dB. 这种高性能天线将为人们提供高质量的定位服务.
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Data availability
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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Zhuolin DENG designed the research. Zhongyu TIAN and Chenhe DUAN processed the data. Zhuolin DENG drafted the paper. Pei XIAO and Zhu LIU helped organize the paper. Zhuolin DENG and Gaosheng LI revised and finalized the paper.
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Zhuolin DENG, Zhongyu TIAN, Chenhe DUAN, Pei XIAO, Zhu LIU, and Gaosheng LI declare that they have no conflict of interest.
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Deng, Z., Tian, Z., Duan, C. et al. Wideband and high-gain BeiDou antenna with a sequential feed network for satellite tracking. Front Inform Technol Electron Eng 24, 1471–1481 (2023). https://doi.org/10.1631/FITEE.2200244
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DOI: https://doi.org/10.1631/FITEE.2200244
Key words
- BeiDou antenna
- Wideband circularly polarized radiation
- Four-port sequential feed network
- Global navigation satellite system (GNSS) receiver
- Satellite tracking