Abstract
We propose to realize a broadband and wide-angle reflective polarization converter in microwave regions. The proposed converter can convert a linearly polarized (LP) wave to its cross-polarized wave at three resonant frequencies. It can also convert the LP wave to a circularly polarized wave at other two resonant frequencies. Furthermore, the proposed converter can achieve broad bandwidth with incident angle up to 45°. The simulated and measured results are in agreement in the entire frequency regions, and the bandwidth of polarization conversion over 75 % can be obtained from 7.6 to 15.5 GHz under normal incidence and from 7.8 to 13.0 GHz under incident angle of 45°. The surface current distributions of the proposed converter are discussed to analyze the physical mechanism. The converter tolerance to wide angle of incidence and the broad bandwidth could be useful in the range of applications in the microwave regions.
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Acknowledgments
The authors are grateful to the supports from the National Natural Science Foundation of China under Grant Nos. 51025208 and 61001026, the Program for Changjiang Scholars and Innovative Research Team in University, the Fundamental Research Funds under Grant No. ZYGX2013J029, and the Open Foundation of National Engineering Research Center of Electromagnetic Radiation Control Materials under Grant ZYGX2013K001-5.
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Zhang, L., Zhou, P., Chen, H. et al. Broadband and wide-angle reflective polarization converter based on metasurface at microwave frequencies. Appl. Phys. B 120, 617–622 (2015). https://doi.org/10.1007/s00340-015-6173-2
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DOI: https://doi.org/10.1007/s00340-015-6173-2