A linear-to-circular polarization converter based on I-shaped circular frequency selective surfaces

作者：Wu, Jia-Liang^*; Lin, Bao-Qin; Da, Xin-Yu; Wu, Kai

来源：Chinese Physics B, 2017, 26(9): 094201.

DOI：10.1088/1674-1056/26/9/094201

• polarization converter
• metasurface
• frequency selective surface

In this paper, a linear-to-circular polarization converter using a three-layer frequency selective surface based on Ishaped circular structure resonant is presented and investigated. Numerical simulations exhibit that when the normal ypolarized waves impinge on this device propagating towards +z direction, the two orthogonal components of the transmitted waves have a 90 degrees phase difference as well as the nearly equal amplitudes at the resonant frequency of 7.04 GHz, which means that the left-hand circular polarization is realized in transmission. For validating the proposed design, a prototype which consists of 25 x 25 elements has been designed, manufactured and measured. The measured results are in good agreement with the simulated ones, showing that the polarization conversion transmission is over 3 dB in the frequency range of 5.22-8.08 GHz and the axial ratio is below 3 dB from 5.86 GHz to 7.34 GHz.

• 出版日期2017-9
• 单位中国人民解放军空军工程大学