一种S频段卫星通信相控阵天线设计

doi:10.3969/j.issn.1001-2400.2018.03.030

西安电子科技大学学报

• 研究论文 • 上一篇

一种S频段卫星通信相控阵天线设计

郭超1;赵春柳2;鄢泽洪1;张天龄1

(1. 西安电子科技大学天线与微波技术重点实验室，陕西西安 710071；
2. 国防科技工业局军工项目审核中心，北京 100000)

收稿日期:2017-06-06 出版日期:2018-06-20 发布日期:2018-07-18
作者简介:郭超(1994-)，男，西安电子科技大学硕士研究生，E-mail：chao_guo132@qq.com
基金资助:
国家自然科学基金资助项目(61401339)

Design of a satellite communication phased array antenna in the S-band

GUO Chao1;ZHAO Chunliu2;YAN Zehong1;ZHANG Tianling1

(1. Science and Technology on Antennas and Microwave Lab., Xidian Univ., Xi'an 710071, China;
2. Military Industry Project Evaluation Center of COSTIND, Beijing 100000, China)

Received:2017-06-06 Online:2018-06-20 Published:2018-07-18

摘要/Abstract

摘要：

为了解决目前卫星通信相控阵天线波束扫描角度范围较小、低仰角增益较低等问题，采用双层微带结构，加载圆形金属腔体，实现了更宽波束的S频段圆极化相控阵单元，来提高相控阵低仰角增益．然后，用24个单元按照水滴状形式排布组成相控阵阵列，以减小风阻．仿真结果表明，在收发频段内，相控阵单元的电压驻波比小于1.3，轴比小于3dB，单元在阵中的3dB波瓣宽度为120°左右; 天线阵列在扫描到仰角25°时，其增益相比天顶方向(仰角90°)下降了4dB左右．最后，加工好的天线阵列测试结果和仿真结果具有很好的一致性，波束扫描角度较宽，低仰角增益较大，满足设计要求．

关键词: 卫星通信, 相控阵, 波束扫描, 圆极化, 水滴状

Abstract:

The phased array antenna for satellite communication has a smaller beam-scanning angel and a lower gain at the low elevation angel at present. A circularly polarized (CP) antenna element with a wide beam-width in the S-band is proposed. To enhance the realized gain at a low elevation angel, this element is adopted with the dual-layer micro-strip structure and loads a circular metal cavity. Based on the element, a phased array antenna composed of 24 antenna units is designed, which has a water-drop form to reduce wind resistance. The simulated results show that over the transmitting and the receiving frequency band, the voltage standing wave ratio (VSWR) of this element is less than 1.3, that the axial ratio (AR) is less than 3dB, and that 3dB beam-width of the element is about 120° in the array; the realized gain of the array is declined about 4dB when the scanning angle is approaching 65°. Later, the measured results of the manufactured array antenna present a good consistency with the simulated results. It possesses a wide scanning angle and a high realized gain at low elevation angel, which satisfies the design requirement.

Key words: satellite communication, phased array, beam scanning, circularly polarized, water-drop form

郭超;赵春柳;鄢泽洪;张天龄. 一种S频段卫星通信相控阵天线设计[J]. 西安电子科技大学学报, 2018, 45(3): 175-180.

GUO Chao;ZHAO Chunliu;YAN Zehong;ZHANG Tianling. Design of a satellite communication phased array antenna in the S-band[J]. Journal of Xidian University, 2018, 45(3): 175-180.

参考文献

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一种S频段卫星通信相控阵天线设计

Design of a satellite communication phased array antenna in the S-band

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