中国物理B ›› 2017, Vol. 26 ›› Issue (2): 24102-024102.doi: 10.1088/1674-1056/26/2/024102
• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇 下一篇
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)
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)
摘要: 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.
中图分类号: (Electromagnetic wave propagation; radiowave propagation)