ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Metamaterial beam scanning leaky-wave antenna based on quarter mode substrate integrated waveguide structure |
Guo-Cheng Wu(吴国成), Guang-Ming Wang(王光明), Xiao-Long Fu(付孝龙), Jian-Gang Liang(梁建刚), Wei-Xiong Bai(白渭雄) |
Air and Missile Defense College, Air Force Engineering University, Xi'an 710051, China |
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Abstract In this paper, we first propose a metamaterial structure by etching the same two interdigital fingers on the upper ground of quarter mode substrate integrated waveguide (QMSIW). The simulated results show that the proposed QMSIW-based metamaterial has a continuous phase constant changing from negative to positive values within its passband. A periodic leaky-wave antenna (LWA), which consists of 11 QMSIW-based metamaterial unit cells, is designed, fabricated, and measured. The measured results show that the fabricated antenna achieves a continuous beam scanning property from backward -43° to forward +32° over an operating frequencyrange of 8.9 GHz-11.8 GHz with return loss better than 10 dB. The measured antenna gain keeps consistent with the variation of less than 2 dB over the operating frequency range with a maximum gain of 12 dB. Besides, the measured and simulated results are in good agreement with each other, indicating the significance and effectiveness of this method.
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Received: 20 June 2016
Revised: 14 October 2016
Accepted manuscript online:
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PACS:
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61372034). |
Corresponding Authors:
Guo-Cheng Wu
E-mail: wgc805735557@163.com
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Cite this article:
Guo-Cheng Wu(吴国成), Guang-Ming Wang(王光明), Xiao-Long Fu(付孝龙), Jian-Gang Liang(梁建刚), Wei-Xiong Bai(白渭雄) Metamaterial beam scanning leaky-wave antenna based on quarter mode substrate integrated waveguide structure 2017 Chin. Phys. B 26 024102
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