宽带馈电网络圆极化天线轴比的相互耦合

2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT) Pub Date : 2021-09-13 DOI:10.1109/ucmmt53364.2021.9569886

Bo Liu, Simin Song, Xiaoming Chen

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引用次数: 0

摘要

提出了一种双馈圆极化天线宽带馈电网络。馈电网络由宽带90°移相器和Wilkson功率分配器组成。阻抗带宽(VSWR≤2)为2.5 ~ 4.5 GHz(约57%)，3db轴比带宽为2.9 ~ 4.1 GHz，中心频率处最大增益为7.0 dB。在1×2阵列上的模拟结果表明，相互耦合使轴比从1.03 dB下降到4.37 dB。

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Mutual Coupling on Axial Ratio of Circularly Polarized Antenna With Broadband Feed Network

This paper presents a broadband feed network for dual-fed circularly polarized antenna. The feed network is composed of broadband 90° phase shifter and a Wilkson power splitter. The impedance bandwidth (VSWR≤ 2) is from 2.5 to 4.5 GHz (about 57%), with the 3 dB axial ratio bandwidth from 2.9 to 4.1 GHz, and the maximum gain are 7.0 dB at the center frequency. The simulated results in the 1×2 array shows that the mutual coupling deteriorates the axial ratio from 1.03 dB to 4.37 dB.

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2021 14th UK-Europe-China Workshop on Millimetre-Waves and Terahertz Technologies (UCMMT)

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