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A spatial filter/diplexer for gigawatt level high power microwave is theoretically and experimentally investigated in this paper. The spatial filter consists of several cylindrical rods which are located in the near field of the applied radiating antenna. The S/X dual band microwaves are reflected and transmitted by the spatial filter in the same propagation directions. In the low power experiments, the transmitted and the reflected patterns are very close to that of the applied antenna. The measured reflection and transmission efficiencies, calculated from the power densities in the far-field region, are about 96% and 97% respectively. In addition, the spatial filter has the isolation level higher than 25 dB and the cross polar level much lower than -25 dB. Under the illumination by S/X band high power microwave with a pulse magnitude of about 1.5 GW and duration of about 100 ns, no microwave breakdown is observed.
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Keywords:
- high power microwave /
- coupling output /
- spatial filter /
- diplexer
[1] Fan Y W, Zhong H H, Li Z Q, Shu T, Yang H W, Wang Y, Luo L, Zhao Y S 2008 Chin. Phys. B 17 1804
[2] Wang D, Chen D B, Fan Z K, Deng J K 2008 Acta Phys. Sin. 57 4875 (in Chinese) [王 冬、陈代兵、樊植开、邓景康 2008 物理学报 57 4875]
[3] Liao C, Liu D G, Liu S G 2009 Acta Phys. Sin. 58 6709 (in Chinese) [廖 臣、刘大刚、刘盛纲2009物理学报 58 6709]
[4] Fan Y W, Zhong H H, Yang H W, Li Z Q, Shu T, Zhang J, Wang Y, Luo L 2008 J. Appl. Phys. 103 123301
[5] Wang D, Chen D B, Qin F, Fan Z K 2009 Chin. Phys. B 18 4282
[6] Lu Z G, Gong Y B, Wei Y Y, Xu J, Gao P, Wang W X 2009 Chin. Phys. B 18 2447
[7] Fu W J, Yan Y 2007 Acta Phys. Sin. 56 7100 (in Chinese) [傅文杰、鄢 扬2007物理学报56 7100]
[8] Chen D B, Wang D, Fan Z K, Meng F B, An H S, Gong H T, Qin F 2009 Acta Phys. Sin. 58 4548 (in Chinese) [陈代兵、王冬、范植开、孟凡宝、安海狮、龚海涛、秦 奋2009物理学报 59 4548]
[9] Li G L, Yuan C W, Zhang J Y, Shu T, Zhang J 2008 Laser and Partilce Beams 26 371
[10] Fan Y W, Zhong H H, Li Z Q, Shu T, Yang H W, Zhou H, Yuan C W, Zhou W H, Luo L 2008 Phys. Plasmas 15 083102
[11] Li G L, Shu T, Yuan C W, Zhang J, Jin Z X, Yang J H 2010 Phys. Plasmas 17 033301
[12] Li G L, Shu T, Yuan C W, Zhu J, Liu J, Wang B, Zhang J 2010 Laser and Particle Beams B 28 35
[13] Levine J, Aiello N, Benford J 1990 Proc. SPIE 60 1226
[14] Li G L, Shu T, Yuan C W 2007 High Power Laser and Particle Beams 19 667 (in Chinese) [李国林、舒 挺、袁成卫2007强激光与粒子束 19 667]
[15] Besso P, Bozzi M, Perregrini L, Drioli L S, Nickerson W 2003 IEEE Trans. Antennas Propag. 51 388
[16] Imbriale W A, Esquivel M S, Manshadi F 1998 IEEE Trans. Antennas Propag. 46 1790
[17] Yasumoto K 2006 Electromagnetic Theory and Applications for Photonic Crystals (New York: Taylor & Francis Group) p227
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[1] Fan Y W, Zhong H H, Li Z Q, Shu T, Yang H W, Wang Y, Luo L, Zhao Y S 2008 Chin. Phys. B 17 1804
[2] Wang D, Chen D B, Fan Z K, Deng J K 2008 Acta Phys. Sin. 57 4875 (in Chinese) [王 冬、陈代兵、樊植开、邓景康 2008 物理学报 57 4875]
[3] Liao C, Liu D G, Liu S G 2009 Acta Phys. Sin. 58 6709 (in Chinese) [廖 臣、刘大刚、刘盛纲2009物理学报 58 6709]
[4] Fan Y W, Zhong H H, Yang H W, Li Z Q, Shu T, Zhang J, Wang Y, Luo L 2008 J. Appl. Phys. 103 123301
[5] Wang D, Chen D B, Qin F, Fan Z K 2009 Chin. Phys. B 18 4282
[6] Lu Z G, Gong Y B, Wei Y Y, Xu J, Gao P, Wang W X 2009 Chin. Phys. B 18 2447
[7] Fu W J, Yan Y 2007 Acta Phys. Sin. 56 7100 (in Chinese) [傅文杰、鄢 扬2007物理学报56 7100]
[8] Chen D B, Wang D, Fan Z K, Meng F B, An H S, Gong H T, Qin F 2009 Acta Phys. Sin. 58 4548 (in Chinese) [陈代兵、王冬、范植开、孟凡宝、安海狮、龚海涛、秦 奋2009物理学报 59 4548]
[9] Li G L, Yuan C W, Zhang J Y, Shu T, Zhang J 2008 Laser and Partilce Beams 26 371
[10] Fan Y W, Zhong H H, Li Z Q, Shu T, Yang H W, Zhou H, Yuan C W, Zhou W H, Luo L 2008 Phys. Plasmas 15 083102
[11] Li G L, Shu T, Yuan C W, Zhang J, Jin Z X, Yang J H 2010 Phys. Plasmas 17 033301
[12] Li G L, Shu T, Yuan C W, Zhu J, Liu J, Wang B, Zhang J 2010 Laser and Particle Beams B 28 35
[13] Levine J, Aiello N, Benford J 1990 Proc. SPIE 60 1226
[14] Li G L, Shu T, Yuan C W 2007 High Power Laser and Particle Beams 19 667 (in Chinese) [李国林、舒 挺、袁成卫2007强激光与粒子束 19 667]
[15] Besso P, Bozzi M, Perregrini L, Drioli L S, Nickerson W 2003 IEEE Trans. Antennas Propag. 51 388
[16] Imbriale W A, Esquivel M S, Manshadi F 1998 IEEE Trans. Antennas Propag. 46 1790
[17] Yasumoto K 2006 Electromagnetic Theory and Applications for Photonic Crystals (New York: Taylor & Francis Group) p227
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