Ultra-wideband circular-polarization converter with micro-split Jerusalem-cross metasurfaces  

作　　者：高喜 余行阳 曹卫平 姜彦南 于新华 

机构地区：[1]School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, China [2]Guangxi Key Laboratory of Wireless Wideband Communication & Signal Processing, Guilin 541004, China

出　　处：《Chinese Physics B》2016年第12期455-461,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.61461016 and 61661012);the Natural Science Foundation of Guangxi Zhuang Autonomous Region,China(Grant Nos.2014GXNSFAA118366,2014GXNSFAA118283,and 2015jj BB7002);the Innovation Project of Graduate Education of Guilin University of Electronic Technology,China(Grant No.2016YJCX82)

摘　　要：An ultrathin micro-split Jerusalem-cross metasurface is proposed in this paper, which can efficiently convert the linear polarization of electromagnetic （EM） wave into the circular polarization in ultra-wideband. By symmetrically employing two micro-splits on the horizontal arm （in the x direction） of the Jerusalem-cross structure, the bandwidth of the proposed device is significantly extended. Both simulated and experimental results show that the proposed metasurface is able to convert linearly polarized waves into circularly polarized waves in a frequency range from 12.4 GHz to 21 GHz, with an axis ratio better than 1 dB. The simulated results also show that such a broadband and high-performance are maintained over a wide range of incident angle. The presented polarization converter can be used in a number of areas, such as spectroscopy and wireless communications.An ultrathin micro-split Jerusalem-cross metasurface is proposed in this paper, which can efficiently convert the linear polarization of electromagnetic （EM） wave into the circular polarization in ultra-wideband. By symmetrically employing two micro-splits on the horizontal arm （in the x direction） of the Jerusalem-cross structure, the bandwidth of the proposed device is significantly extended. Both simulated and experimental results show that the proposed metasurface is able to convert linearly polarized waves into circularly polarized waves in a frequency range from 12.4 GHz to 21 GHz, with an axis ratio better than 1 dB. The simulated results also show that such a broadband and high-performance are maintained over a wide range of incident angle. The presented polarization converter can be used in a number of areas, such as spectroscopy and wireless communications.

关 键 词：circular-polarization converter micro-split Jerusalem-cross metasurface ultrathin ULTRA-WIDEBAND 

分 类 号：O441.4[理学—电磁学]