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Plasma Sci. Technol. ›› 2018, Vol. 20 ›› Issue (1): 14017-014017.doi: 10.1088/2058-6272/aa8f3e

• 18届全国等离子体科学和技术会议 • 上一篇    下一篇

Studies on omnidirectional enhancement of giga-hertz radiation by sub-wavelength plasma modulation

Fanrong KONG (孔繁荣)1, Qiuyue NIE (聂秋月)1, Shu LIN (林澍)2, Zhibin WANG (王志斌)3, Bowen LI (李博文)4, Shulei ZHENG (郑树磊)4 and Binhao JIANG (江滨浩)1   

  1. 1 School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
    2 School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
    3 Laboratory for Space Environment and Physical Sciences, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
    4 Department of Physics, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
  • 出版日期:2017-12-04 发布日期:2017-12-07

Studies on omnidirectional enhancement of giga-hertz radiation by sub-wavelength plasma modulation

Fanrong KONG (孔繁荣)1, Qiuyue NIE (聂秋月)1, Shu LIN (林澍)2, Zhibin WANG (王志斌)3, Bowen LI (李博文)4, Shulei ZHENG (郑树磊)4 and Binhao JIANG (江滨浩)1   

  1. 1 School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
    2 School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
    3 Laboratory for Space Environment and Physical Sciences, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
    4 Department of Physics, Harbin Institute of Technology, Harbin 150001, People’s Republic of China
  • Online:2017-12-04 Published:2017-12-07
  • Supported by:

    This work was supported by National Natural Science Foundation of China under Grant No. 51577044.

Abstract:

The technology of radio frequency (RF) radiation intensification for radio compact antennas based on modulation and enhancement effects of sub-wavelength plasma structures represents an innovative developing strategy. It exhibits important scientific significance and promising potential of broad applications in various areas of national strategic demands, such as electrical information network and microwave communication, detection and control technology. In this paper, laboratory experiments and corresponding analyses have been carried out to investigate the modulation and enhancement technology of sub-wavelength plasma structure on the RF electromagnetic radiation. An application focused sub-wavelength plasma-added intensification up to ∼7 dB higher than the free-space radiation is observed experimentally in giga-hertz (GHz) RF band. The effective radiation enhancement bandwidth covers from 0.85 to 1.17 GHz, while the enhanced electromagnetic signals transmitted by sub-wavelength plasma structures maintain good communication quality. Particularly, differing from the traditional RF electromagnetic radiation enhancement method characterized by focusing the radiation field of antenna in a specific direction, the sub-wavelength plasma-added intensification of the antenna radiation presents an omnidirectional enhancement, which is reported experimentally for the first time. Corresponding performance characteristics and enhancement mechanism analyses are also conducted in this paper. The results have demonstrated the feasibility and promising potential of sub-wavelength plasma modulation in application focused RF communication, and provided the scientific basis for further research and development of sub-wavelength plasma enhanced compact antennas with wide-range requests and good quality for communication.

Key words: sub-wavelength plasma, omnidirectional radiation enhancement, operating properties of plasma-added antenna

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