空间电子技术2025，Vol.22Issue(1)：58-66,9.DOI:10.3969/j.issn.1674-7135.2025.01.006
毫米波圆极化单脉冲阵列天线设计
Design of a millimeter wave circularly polarized monopulse antenna array
摘要
Abstract
A millimeter wave circularly polarized monopulse antenna array featuring high gain and low axial ratio is proposed to meet the stringent requirements for self-tracking capability for downlink signal reception in the satellite communication system.A novel sequential rotation comparator network is devised,integrating the phase relationship between the traditional 2D monopulse comparator and the sequential rotation network to achieve low axial ratio radiation.Additionally,a low-profile left-handed circularly polarized subarray,comprising sixty-four radiators and a 1-to-64 feeder network,is designed.Four subarrays are arranged orthogonally and connected to the output ports of the sequential rotation comparator network.Simulation results demonstrate an operating bandwidth of 27.5 GHz～30 GHz(return loss＞-15 dB)for the 16×16 monopulse antenna array,with a sum beam main polarization gain reaching 33.2 dBic.The in-band axial ratio is less than 0.3 dB,and the zero depth is less than-25 dB.The developed monopulse antenna array exhibits high gain and circular polarization purity,rendering it suitable for satellite communication applications.关键词
轴比/圆极化/比较器/顺序旋转比较器网络/单脉冲阵列天线Key words
axial ratio/circularly polarized/comparator/sequential rotation comparator network/monopulse array antenna分类
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姚佳慧,吴思凡,李建星,田春明,周海东..毫米波圆极化单脉冲阵列天线设计[J].空间电子技术,2025,22(1):58-66,9.基金项目
国家重点研发计划(编号:2021YFA0717500) （编号:2021YFA0717500）
国家自然科学基金(编号:62133013) （编号:62133013）
陕西省创新能力支持计划(编号:2023KJXX-130) （编号:2023KJXX-130）
