Design and test of an array antenna transmitting high power microwave
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摘要: 设计了一种用于高功率微波发射的S波段波导缝隙阵列天线。采用耦合波导和馈电波导同层排布的方式减小了天线的剖面高度,通过耦合缝隙同向偏置,辐射缝隙按照一定规律排布补偿相位,实现了缝隙单元方向图同相叠加,对缝隙参数、功分器形式与功率容量的关系进行了仿真分析,并在天线内部充入0.1 MPa SF6气体,提高了天线的功率容量。仿真和试验结果表明,在6.7%带宽内,天线电压驻波比小于1.5,增益达到27 dBi,采用窄谱高功率微波源激励天线并进行了高功率微波发射试验,天线的发射波形与微波源的输出波形具有良好一致性,测试的微波源输出功率为2.67 MW。Abstract: A slotted waveguide array antenna operating at S band for transmitting high power microwave is developed in this paper. The profile height is reduced by arranging the coupling waveguide and feeding waveguide on same layout. The coupling slots with same offsets direction and the radiating slots arranged regularly compensate phase, which achieves in-phase superposition of pattern of slot units. The influence of different slot parameters and types of divider on power capacity of the antenna are simulated. 0.1 MPa SF6 gas is filled in the sealed antenna to enhance power-handling capability. The simulated and test results show that the antenna has a 6.7% bandwidth with VSWR less than 1.5 and a gain up to 27 dBi. Hot test of this antenna is carried out fed by narrow-band high power microwave source. The transmitted waveform and the output one agree well. The measured output power of the source is 2.67 MW.
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表 1 ly1=10 mm,不同w1取值下的Emax
Table 1. ly1=10 mm, Emax with different w1
w1/mm lx1/mm Emax/(V·m−1) 8 50.10 3013.39 10 50.56 2467.90 12 51.00 2162.49 14 51.26 1939.91 表 2 w1=12 mm,不同ly1取值下的Emax
Table 2. w1=12 mm, Emax with different ly1
ly1/mm lx1/mm Emax/(V·m−1) 8 49.86 2273.79 10 50.98 2162.49 12 51.85 2370.78 14 52.7 2023.07 表 3 E-T结功分器内部的Emax
Table 3. Emax within E-T junction divider
dj1/mm dj2/mm Emax/(V·m−1) 0 0 1244.21 0 2 1314.58 2 0 1428.46 2 2 1473.24 2 4 1447.33 4 2 1300.9 4 4 1250.06 -
[1] Prather W D, Giri D V, Gardner R L. Dr. Carl Baum: one remarkable career[J]. Radio Science Bulletin, 2005, 2005(312): 10-20. [2] Wraight A, Altgilbers L. A simple model for an HPM counter-IED effect[C]//RF Directed Energy Weapons Conference. 2010. [3] 杨一明, 袁成卫, 钱宝良. 波导缝隙阵列天线高功率微波应用探索[J]. 强激光与粒子束, 2013, 25(10):2648-2652 doi: 10.3788/HPLPB20132510.2648Yang Yiming, Yuan Chengwei, Qian Baoliang. Beam steering antenna for high power microwave application[J]. High Power Laser and Particle Beams, 2013, 25(10): 2648-2652 doi: 10.3788/HPLPB20132510.2648 [4] 廖勇, 孟凡宝, 张现福, 等. L波段高功率波导缝隙阵设计与数值模拟[J]. 强激光与粒子束, 2016, 28:113003 doi: 10.11884/HPLPB201628.160069Liao Yong, Meng Fanbao, Zhang Xianfu, et al. Design and simulation of L-band high power microwave antenna based on rectangular waveguides with longitudinal shunt slots[J]. High Power Laser and Particle Beams, 2016, 28: 113003 doi: 10.11884/HPLPB201628.160069 [5] 马嘉雯, 孙云飞, 宛建峰, 等. 高功率谐振式波导缝隙阵宽角扫描技术[J]. 强激光与粒子束, 2021, 33:103002 doi: 10.11884/HPLPB202133.210307Ma Jiawen, Sun Yunfei, Wan Jianfeng, et al. Investigation of wide-angle scanning technology for high power resonant waveguide slot array antenna[J]. High Power Laser and Particle Beams, 2021, 33: 103002 doi: 10.11884/HPLPB202133.210307 [6] Sun Yunfei, Dang Fangchao, Yuan Chengwei, et al. A beam-steerable lens antenna for Ku-band high-power microwave applications[J]. IEEE Transactions on Antennas and Propagation, 2020, 68(11): 7580-7583. doi: 10.1109/TAP.2020.2979282 [7] 杨一明, 袁成卫, 钱宝良. 喇叭有效口径渐变法测量高功率微波天线近场气体击穿[J]. 强激光与粒子束, 2011, 23(10):2697-2700 doi: 10.3788/HPLPB20112310.2697Yang Yiming, Yuan Chengwei, Qian Baoliang. High power microwave air breakdown by changing effective aperture of horn antenna[J]. High Power Laser and Particle Beams, 2011, 23(10): 2697-2700 doi: 10.3788/HPLPB20112310.2697 [8] 李佳伟, 黄文华, 梁铁柱, 等. 基于漏波波导的X波段高功率微波天线[J]. 强激光与粒子束, 2011, 23(8):2015-2129 doi: 10.3788/HPLPB20112308.2125Li Jiawei, Huang Wenhua, Liang Tiezhu, et al. Design and simulation of X-band HPM antenna based on leaky waveguide[J]. High Power Laser and Particle Beams, 2011, 23(8): 2015-2129 doi: 10.3788/HPLPB20112308.2125 [9] Meng Ru, Xia Yulong, Guo Yuanyue, et al. An X-band 48-way leaky waveguide antenna with high aperture efficiency and high power capacity[J]. IEEE Transactions on Antennas and Propagation, 2018, 66(12): 6799-6809. doi: 10.1109/TAP.2018.2870432 [10] Martel C. A rectangular slotted waveguide array for high power microwave applications[C]//2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting. 2020: 343-344. [11] 郝张成, 吴逸文. 基于人造电壁的高辐射效率、高选择性太赫兹滤波天线: 109687107A[P]. 2019-04-26Hao Zhangcheng, Wu Yiwen. High efficiency and selectivity terahertz filtering antenna based on artificial electric wall: 109687107A[P]. 2019-04-26 [12] Bi Shaofeng, Yuan Chengwei, Zhang Qiang, et al. An L-band leaky-wave array antenna for high-power microwave applications[J]. IEEE Transactions on Antennas and Propagation, 2023, 71(8): 6918-6923. doi: 10.1109/TAP.2023.3241435 [13] 魏文元, 宫德明, 陈必森. 天线原理[M]. 北京: 国防工业出版社, 1985Wei Wenyuan, Gong Deming, Chen Bisen. Antenna theory[M]. Beijing: National Defense Industry Press, 1985 [14] Elliott R S, O'Loughlin W R. The design of slot arrays including internal mutual coupling[J]. IEEE Transactions on Antennas and Propagation, 1986, 34(9): 1149-1154. doi: 10.1109/TAP.1986.1143947 [15] Johnson R C, Jasik H. Antenna engineering handbook[M]. New York, NY, USA: McGraw-Hill, 1984. [16] 季严松, 张民, 王承玉, 等. SF6/N2混合气体在电弧作用下分解产物试验研究[J]. 高压电器, 2021, 57(3):145-151,156Ji Yansong, Zhang Min, Wang Chengyu, et al. Study on decomposition products of SF6/N2 gas mixture under the action of electric arc[J]. High Voltage Apparatus, 2021, 57(3): 145-151,156 [17] 莫尔施W, 豪席尔德W. 高压绝缘用六氟化硫[M]. 李建基, 译. 北京: 机械工业出版社, 1984Mosch W, Howschild W. Hochspannungsisolierungen mit schwefelhexa-fluori[M]. Li Jianji, trans. Beijing: China Machine Press, 1984 -