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本文通过设计出一种反射型极化旋转超表面, 在8-12 GHz频域内实现高效的极化旋转, 并将其加载于微带缝隙天线下方构成新型的极化旋转超表面天线, 利用超表面的90极化旋转效应, 成功实现了天线的圆极化辐射调制. 仿真与实验结果表明: 圆极化天线的中心工作频率为f = 9.1 GHz, 阻抗带宽为8.3-10 GHz. 当微带缝隙天线与极化旋转超表面的间距H=4.5 mm时, 天线在8.3-8.8 GHz频带内实现了圆极化辐射; 当H=20 mm时, 天线在8.8-9.3 GHz频带内实现了圆极化辐射; 当H=8 mm时, 天线在9.3-10 GHz频带内实现了圆极化辐射. 实验结果与仿真结果相符, 证明了此种设计方法的有效性, 也为微带缝隙天线的圆极化设计提供了一种新的途径.A novel circular porlarization (CP) antenna is designed and fabricated by loading a kind of polarization conversion metasurface. The structure of polarization conversion metasurface is composed of metal slash and copper ground sheet, which is separated by an FR4 dielectric substrates with a thickness h=3 mm. When a normal electromagnetic wave incident on the whole surface vertically, the electric field of the wave can be decomposed into two components Evi and Evi. Under the excitation of the two components, resonance is induced between the metal slash and the copper ground sheet respectively, making their own reflection phase changed to = u - v = 180, eventually making the reflection wave appear with 90 polarization rotation. By taking the peculiarity of 90polarization rotation of the polarization conversion metasurface, we can modulate the linear polarization of microstrip slot antenna into the circular polarization radiation. Through adjusting the distance between the slot antenna and the polarization rotation metasurface, we can regulate the working frequency of the circular polarization. Simulated and experimental results show that the polarization conversion metasurface makes a high-efficiency polarization rotation at 8-12 GHz. And the center working frequency of the CP antenna is 9.1 GHz, the impedance bandwidth is 8.3-10 GHz. When the distance H = 4.5 mm between the microstrip slot antenna and the polarization conversion metasurface, the 3 dB axial ratio bandwidth is 8.3-8.8 GHz, the microstrip slot antenna may realize circular polarized radiation. When H = 20 mm, the 3 dB axial ratio bandwidth is 8.8-9.3 GHz, and the slot antenna can realize circular polarized radiation. When H = 8 mm, the 3 dB axial ratio bandwidth is 9.3-10 GHz, the slot antenna can realize circular polarized radiation. Experimental results are in agreement with the simulation results, showing the validity of this design method which may become a new approach for the CP antennain designing
[1] Yu N F, Genevet P, Kats A M, Aieta F, Tetienne J P, Capasso F, Gaburro Z 2011 Science 334 333
[2] Aieta F, Genevet P, Yu N F, Kats A M, Gaburro Z, Capasso F 2012 Nano Lett. 12 1702
[3] Yu N F, Capasso F 2014 Nature Mater. 13 139
[4] Li Y F, Zhang J Q, Qu Sh B, Wang J F, Chen H Y, Xu Zhuo, Zhang A X 2014 Appl. Phys. Lett. 104 221110
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[14] Chen H Y, Wang J F, Ma H, Qu S B, Zhang J Q, Xu Z, Zhang A X 2015 Chin. Phys. B 24 014201
[15] Chen H Y, Wang J F, Ma H, Qu S B, Xu Z, Zhang A X, Yan M B, Li Y F 2014 J. Appl. Phys. 115 154540
[16] Li Y F, Zhang J Q, Qu Sh B, Wang J F, Chen H Y, Xu Zhuo, Zhang A X 2014 J. Appl. Phys. 115 234506
[17] Li Y F, Zhang J Q, Qu Sh B, Wang J F, Zheng L, Zhou H, Xu Zhuo, Zhang A X 2015 Chin. Phys. B 24 014202
[18] Xue R F, Zhong S S 2002 Chin. J. Radio 17 331 (in Chinese) [薛睿峰, 钟顺时 2002 电波科学学报 17 331]
[19] Zhang J, Liu K C, Zhang X F 1988 The Theory and Engineering of Microstrip Antenna (Beijing: National Denfence Industry Press) p215 (in Chinese) [张钧, 刘克诚, 张贤峄 1988 微带天线理论与工程(北京:国防工业出版社) 第215页]
[20] Chen C, Wu S, Yen T 2008 Appl. Phys. Lett. 93 034110
[21] Mosallaei H, Sarabandi K 2004 IEEE Trans. Antennas Propag. 52 2403
[22] Yang F, Rahmat S Y 2003 IEEE Trans. Antennas Propag. 51 2691
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[1] Yu N F, Genevet P, Kats A M, Aieta F, Tetienne J P, Capasso F, Gaburro Z 2011 Science 334 333
[2] Aieta F, Genevet P, Yu N F, Kats A M, Gaburro Z, Capasso F 2012 Nano Lett. 12 1702
[3] Yu N F, Capasso F 2014 Nature Mater. 13 139
[4] Li Y F, Zhang J Q, Qu Sh B, Wang J F, Chen H Y, Xu Zhuo, Zhang A X 2014 Appl. Phys. Lett. 104 221110
[5] Yan X, Liang L J, Zhang Y T, Ding X, Yao J Q 2015 Acta.Phys. Sin. 64 158101 (in Chinese) [闫昕, 梁兰菊, 张雅婷, 丁欣, 姚建铨 2015 物理学报 64 158101]
[6] Manjappa M K, Chiam Sh Y, Cong L Q, Bettiol A, Zhang W L, Singh R J 2015 Appl. Phys. Lett. 106 181101
[7] Forouzmand A, Yakovlev A B 2015 IEEE Trans. Antennas Propag. 64 2191
[8] Wan X, Jiang W X, Ma H F, Cui T J 2014 Appl. Phys. Lett. 104 151601
[9] John S H, Brynan Q, Tanabe Y J, Alexander J Y, Fan S H, Ada S. Y. 2015 Phys. Rev. B 91 125145
[10] Zhu H L, Liu X H, Cheung S W, Yuk T I 2014 IEEE Trans. Antennas Propag. 62 80
[11] Chamok N, Anthony T K, Weiss S J, Ali M 2015 IEEE Antennas Propag. Mag. 57 167
[12] Hao J M, Yuan Y, Ran L X, Jiang T, Kong J A, Chan C T, Zhou L 2007 Phys. Rev. Lett. 99 063908
[13] Shi H Y, Li J X, Zhang A X, Wang J F, Xu Z 2014 Chin. Phys. B 23 118101
[14] Chen H Y, Wang J F, Ma H, Qu S B, Zhang J Q, Xu Z, Zhang A X 2015 Chin. Phys. B 24 014201
[15] Chen H Y, Wang J F, Ma H, Qu S B, Xu Z, Zhang A X, Yan M B, Li Y F 2014 J. Appl. Phys. 115 154540
[16] Li Y F, Zhang J Q, Qu Sh B, Wang J F, Chen H Y, Xu Zhuo, Zhang A X 2014 J. Appl. Phys. 115 234506
[17] Li Y F, Zhang J Q, Qu Sh B, Wang J F, Zheng L, Zhou H, Xu Zhuo, Zhang A X 2015 Chin. Phys. B 24 014202
[18] Xue R F, Zhong S S 2002 Chin. J. Radio 17 331 (in Chinese) [薛睿峰, 钟顺时 2002 电波科学学报 17 331]
[19] Zhang J, Liu K C, Zhang X F 1988 The Theory and Engineering of Microstrip Antenna (Beijing: National Denfence Industry Press) p215 (in Chinese) [张钧, 刘克诚, 张贤峄 1988 微带天线理论与工程(北京:国防工业出版社) 第215页]
[20] Chen C, Wu S, Yen T 2008 Appl. Phys. Lett. 93 034110
[21] Mosallaei H, Sarabandi K 2004 IEEE Trans. Antennas Propag. 52 2403
[22] Yang F, Rahmat S Y 2003 IEEE Trans. Antennas Propag. 51 2691
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