Design of a high power radome with meander-line polarizer
-
摘要: 设计了一种用于高功率径向线螺旋阵列天线的极化转换天线罩。利用三层介质层包夹双层金属折线，形成密封的埋入式折线栅结构。在实现圆极化与线极化相互转换的同时，又避免金属与空气接触，可以提高功率容量。分析了埋入式折线栅单元各参数的影响，并优化单元参数，以此构建埋入式折线栅极化转换天线罩并加载至X波段高功率径向线螺旋阵列天线，分析了天线的基本性能以及功率容量。仿真结果显示：天线匹配良好，增益和波束宽度变化很小，中心频率轴比由1.16 dB变为40 dB，圆极化波转换为线极化波效果良好；经初步分析，极化转换天线罩的功率容量为121 MW，实现了极化转换天线罩的高功率应用。Abstract: A radome with polarization conversion for high power radial spiral array antenna is designed. Three-layer dielectric substrate are used to sandwich double-layer metal meander line to form sealed and embedded structure. The power capacity can be improved by avoiding the contact between the metal and the air while the conversion between the circular polarization and the linear polarization is realized. The influence of each parameter of the embedded meander-line grid unit is analyzed, and the unit parameters are optimized. An embedded meander-line radome with polarization conversion is made and loaded into an X-band high power helical array antenna. The basic performance and power capacity of the antenna are analyzed. The simulation results show that the matching performance of the antenna is good, the axial ratio of the center frequency is changed from 1.16 dB to 40 dB, and the circular polarization is converted to linear polarization. Through preliminary analysis, the power capacity of the embedded radome with polarization conversion is 121 MW, and the high power application of the radome with polarization conversion is realized.
-
Key words:
- embedded /
- meander line /
- polarization conversion /
- radome /
- power capacity /
- radial spiral array antenna
-
图 1 单层介质极化转换天线罩和埋入式折线栅极化转换天线罩结构
Figure 1. Structure of single-layer dielectric radome and embedded meander-line radome with polarization conversion
图 2 埋入式折线栅极化转换天线罩等效电路
Figure 2. Equivalent circuit of embedded meander-line radome with polarization conversion
图 6 埋入式极化转换天线罩加载至高功率径向线螺旋阵列天线剖视图
Figure 6. Section view of embedded radome with polarization conversion loaded to the high power radial line spiral array antenna
-
[1] Li Xiangqiang, Liu Qingxiang, Wu Xiaojiang, et al. A GW level high-power radial line helical array antenna[J]. IEEE Transactions on Antennas and Propagation, 2008, 56(9): 2943-2948. doi: 10.1109/TAP.2008.928781 [2] Li Xiangqiang, Liu Qingxiang, Zhang Jianqiong, et al. 16-element single-layer rectangular radial line helical array antenna for high-power applications[J]. IEEE Antennas and Wireless Propagation Letters, 2010, 9: 708-711. doi: 10.1109/LAWP.2010.2059371 [3] 徐刚, 李才阳, 张现福, 等. X波段极化可重构高功率微波辐射器仿真设计[J]. 强激光与粒子束, 2015, 27: 103221. doi: 10.11884/HPLPB201527.103221Xu Gang, Li Cai-yang, Zhang Xianfu, et al. X-band high power microwave launcher with polarization reconfigurable capacity. High Power Laser and Particle Beams, 2015, 27: 103221 doi: 10.11884/HPLPB201527.103221 [4] 史赛群, 伍捍东, 任宇辉, 等. 单片微带双面折线栅圆极化天线罩[J]. 微波学报, 2014(s1): 267-270. https://www.cnki.com.cn/Article/CJFDTOTAL-WBXB2014S1076.htmShi Saiqun, Wu Handong, Ren Yuhui, et al. Based on the engineering application of meander-line circular polarizer. Journal of Microwave, 2014(s1): 267-270 https://www.cnki.com.cn/Article/CJFDTOTAL-WBXB2014S1076.htm [5] 刘国栋. Ka波段折线型圆极化天线罩设计[D]. 杭州: 浙江大学, 2012.Liu Guodong. The design of circular polarized radome with meander-line polarizer for Ka-band. Hangzhou: Zhejiang University, 2012 [6] 尹应增, 孙保华, 张进民, 等. 多层曲折线圆极化器的研究[J]. 微波学报, 2000, 16(5): 527-530. https://www.cnki.com.cn/Article/CJFDTOTAL-WBXB2000S1012.htmYin Yingzeng, Sun Baohua, Zhang Jinmin, et al. A study on the multilayered meander-line polarizer. Journal of Microwave, 2000, 16(5): 527-530 https://www.cnki.com.cn/Article/CJFDTOTAL-WBXB2000S1012.htm [7] 曹宏旭, 程正则, 张盼. 转换电磁波极化特性的超材料设计[J]. 湖北科技学院学报, 2013, 33(12): 3-5. https://www.cnki.com.cn/Article/CJFDTOTAL-XNSZ201312003.htmCao Hongxu, Cheng Zhengze, Zhang Pan. The design of metamaterial with electromagnetic wave polarization conversion capacity. Journal of Hubei University of Science And Technology, 2013, 33(12): 3-5 https://www.cnki.com.cn/Article/CJFDTOTAL-XNSZ201312003.htm [8] 谢立云, 刘素君, 张岩, 等. 一种基于手征结构电磁波极化转换材料[J]. 教练机, 2015, 4: 28-31. https://www.cnki.com.cn/Article/CJFDTOTAL-HDKO201504007.htmXie Liyun, Liu Sujun, Zhang Yan, et al. Chiral-structured electromagnetic wave polarization conversion material. Trainer, 2015, 4: 28-31 https://www.cnki.com.cn/Article/CJFDTOTAL-HDKO201504007.htm [9] 何晓阳. 基于超材料的太赫兹圆极化器[C]//第二届全国太赫兹科学技术与应用学术交流会论文集. 2014: 384-388.He Xiaoyang. Terahertz circular polarizer based on metamaterial//Proceedings of the Second National Symposium on the Science and Technology of Terahertz. 2014: 384-388 [10] 苟仲荣. 基于FSS的宽带圆极化器和微带反射阵天线的研究与设计[D]. 西安: 西安电子科技大学, 2015.Gou Zhongrong. Research and design of broadband circular polarizer and microstrip reflect array antenna based on FSS. Xi'an: Xidian University, 2015 [11] Yogesh R, Ladislau M, Stuart G H, et al. An anisotropic impedance surface for dual-band linear-to-circular transmission polarization convertor[C]//IEEE Conference Publications. 2013: 47-50. [12] Lourdes M, Jorge R, Jose I M, et al. A multilayer circular polarizer based on bisected split-ring frequency selective surfaces[J]. IEEE Antennas and Wireless Propagation Letters, 2014, 14: 153-156. [13] Chu R S, Lee K M. Analytical model of a multilayered meander-line polarizer plate with normal and oblique plane wave incidence[J]. IEEE Transactions on Antennas and Propagation, 1987, 35(6): 652-661. [14] 刘庆. X/Ku波段多单元径向线阵列天线馈电系统设计[D]. 成都: 西南交通大学, 2016.Liu Qing. Design on the feed system of X-band and Ku-band multi-unit radial line array antenna. Chengdu: Southwest Jiaotong University, 2016 -
下载:
点击查看大图
图(8)
计量
- 文章访问数: 1873
- HTML全文浏览量: 460
- PDF下载量: 170
- 被引次数: 0
