中圖分類號(hào)： TN929.5 文獻(xiàn)標(biāo)識(shí)碼： A DOI：10.16157/j.issn.0258-7998.223393 中文引用格式： 侯佳，周秀杰，李艷芬，等. 面向6G毫米波通信的超寬帶超材料圓偏振器設(shè)計(jì)與研究[J].電子技術(shù)應(yīng)用，2022，48(10)：5-8. 英文引用格式： Hou Jia，Zhou Xiujie，Li Yanfen，et al. Design and research of 6G millimeter wave UWB resonant metamaterial circular polarizer[J]. Application of Electronic Technique，2022，48(10)：5-8.
Design and research of 6G millimeter wave UWB resonant metamaterial circular polarizer
Hou Jia，Zhou Xiujie，Li Yanfen，Yuan Xueqi
Research Institute of China Telecom.，Ltd.，Beijing 102209，China
Abstract： A 6G millimeter wave ultra-wideband resonant metamaterial circular polarizer is presented in this paper. The polarizer is a single-layer structure with 10 μm ultra-thin polyimide film as the substrate, which effectively reduces the profile thickness of the polarizer and reduces the substrate loss to a certain extent. The circular polarization polarizer uses a low-Q design to mirror the symmetrical T-shaped metal surface, and the metal thickness is 0.6 μm, which is less than the skin depth of the metal in this frequency band. To some extent, the gold properties of the metal metasurface structure are reduced. The low-gold properties and low-Q metasurface design effectively improve the operating bandwidth of the metasurface. The resonator adopts a double resonant metamaterial design method to modulate the phase of orthogonal polarization wave with the same amplitude and phase, so as to achieve a 90° phase difference to form a circularly polarized wave. When the center frequency is 140 GHz, the 3 dB axial ratio can reach the bandwidth of 54 GHz, the center bandwidth can reach 39%, and the insertion loss is less than 5 dB.
Key words : 6G；millimeter wave；UWB；circular-polarization
