高超声速飞行器上可调天线的设计与实现

doi:10.3969/j.issn.1001-506X.2020.10.01

系统工程与电子技术 ›› 2020, Vol. 42 ›› Issue (10): 2149-2155.doi: 10.3969/j.issn.1001-506X.2020.10.01

• 电子技术 • 下一篇

高超声速飞行器上可调天线的设计与实现

牛立强¹(), 钟翔宁²(), 武沛羽¹(), 谢拥军¹()

1. 北京航空航天大学电子信息工程学院, 北京 100191
2. 北京航天微机电技术研究所, 北京 100094

收稿日期:2020-03-13 出版日期:2020-09-21 发布日期:2020-09-19
作者简介:牛立强(1980-),男,博士研究生,主要研究方向为电子对抗、目标特性。E-mail:liqiangniu@126.com|钟翔宁(1992-),女,工程师,硕士,主要研究方向为天线与微波技术、等离子体。E-mail:zhongxn321@126.com|武沛羽(1994-),男,博士研究生,主要研究方向为计算电磁学、微波器件、微波技术与天线。E-mail:peiyuwu.cem@gmail.com|谢拥军(1968-),男,教授,博士,主要研究方向为计算电磁学、目标特性、微波技术与天线、电子对抗。E-mail:yjxie@buaa.edu.cn
基金资助:
国家自然科学基金(61971022)

Design and implementation of tunable antenna on the hypersonic velocity aircraft

Liqiang NIU¹(), Xiangning ZHONG²(), Peiyu WU¹(), Yongjun XIE¹()

1. School of Electronics and Information Engineering, Beihang University, Beijing 100191, China
2. Beijing Aerospace Mechanical and Electrical Technology Institute, Beijing 100094, China

Received:2020-03-13 Online:2020-09-21 Published:2020-09-19

摘要/Abstract

摘要：

当飞行器处于高超声速飞行状态时,其外部会形成等离子体鞘套。等离子体的存在会使飞行器上的天线发生阻抗失配,导致谐振频率偏移以及回波损耗的增加。通过不同速度、高度等条件下等离子体密度的数值预测,进一步估算对天线谐振频率偏移等性能的影响。考虑到元器件的电抗在L波段的寄生效应,利用广义连接网络的方法,对匹配网络设计和优化,完成等离子体环境下的天线阻抗调谐。实验表明,通过改变匹配网络中变容管的容值,等离子体环境下天线的输入阻抗可以被调节,从而复原谐振频率、降低回波损耗、恢复通信性能。

关键词: 高超声速, 等离子体, 可调天线, 阻抗匹配网络, 寄生效应

Abstract:

When the aircraft is in hypersonic velocity flight state, plasma sheath will be formed outside the aircraft. The existence of the plasma will cause impedance mismatch of the antenna on the aircraft, resulting in the resonance frequency effset and the increase of return loss. Through the numerical prediction of plasma density at different speeds, heights and other conditions, the influence of antenna resonance frequency offset and other performance is further estimated. Considering the parasitic effect of reactance of the components in L-band, the generalized connection network method is used to design and optimize the matching network for completing the antenna impedance tuning in plasma environment. The experimental results show that the input impedance of the antenna can be adjusted by changing the volume of the varactor in the matching network, which can restore the resonant frequency, return loss and communication performance.

Key words: hypersonic velocity, plasma, tunable antenna, impedance matching network, parasitic effect

中图分类号:

TN011

牛立强, 钟翔宁, 武沛羽, 谢拥军. 高超声速飞行器上可调天线的设计与实现[J]. 系统工程与电子技术, 2020, 42(10): 2149-2155.

Liqiang NIU, Xiangning ZHONG, Peiyu WU, Yongjun XIE. Design and implementation of tunable antenna on the hypersonic velocity aircraft[J]. Systems Engineering and Electronics, 2020, 42(10): 2149-2155.

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高超声速飞行器上可调天线的设计与实现

Design and implementation of tunable antenna on the hypersonic velocity aircraft

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