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Frontiers of Information Technology & Electronic Engineering
ISSN 2095-9184 (print), ISSN 2095-9230 (online)
2023 Vol.24 No.10 P.1471-1481
Wideband and high-gain BeiDou antenna with a sequential feed network for satellite tracking
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
Key words: BeiDou antenna; Wideband circularly polarized radiation; Four-port sequential feed network; Global navigation satellite system (GNSS) receiver; Satellite tracking
1湖南大学电气与信息工程学院,中国长沙市,410082
2湖南师范大学物理与电子科学学院,中国长沙市,410082
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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DOI:
10.1631/FITEE.2200244
CLC number:
TN967.1
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On-line Access:
2023-10-27
Received:
2022-06-05
Revision Accepted:
2022-09-09
Crosschecked:
2023-10-27