中圖分類號：TN82 文獻標志碼：A DOI: 10.16157/j.issn.0258-7998.245533 中文引用格式： 隋濤，邢斯瑞,，金宇婷,，等. 星載X波段寬帶雙圓極化微帶陣列天線設計[J]. 電子技術應用，2025,，51(3)：85-89. 英文引用格式： Sui Tao,，Xing Sirui，Jin Yuting,，et al. Design of X-band wideband dual circularly polarized microstrip array antenna for satellite communication system[J]. Application of Electronic Technique,，2025，51(3)：85-89.
Design of X-band wideband dual circularly polarized microstrip array antenna for satellite communication system
Sui Tao,，Xing Sirui,，Jin Yuting，An Xiangdong
Chang Guang Satellite Technology Co.,， Ltd.
Abstract： A novel X-band wideband dual-circularly polarized microstrip array antenna is designed to meet the requirements of a satellite X-band communication data forwarding system. The antenna unit adopts microstrip form, the overall energy feed mode is bottom feed, the slot-coupling feed mode is adopted to achieve wide band, and the 3 dB directional coupler is adopted to realize the phase difference between the two signals to meet the dual circularly polarization. The array antenna consists of 24 antenna units arranged in a 4×6 rectangle, each of which is rotated in a group of 4 units. Through the analysis of electromagnetic simulation software, it can be obtained that the array antenna has a gain of 17.9 dBi and an axis ratio of 0.06 dB at the center frequency of 8.2 GHz in the operating frequency band of 8 GHz~8.4 GHz. The antenna achieves the performance indexes such as wide band and double circularly polarization, and has certain guiding significance for the design of X-band wireless communication system.
Key words : microstrip array antenna,；wide band；dual circularly polarized,；slot-coupled feed
