Journal
OPTICS EXPRESS
Volume 26, Issue 16, Pages 20913-20919Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.020913
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Funding
- National Natural Science Foundation of China (NSFC) [11304253]
- Fundamental Research Funds for the Central Universities [XDJK2016A019]
- Undergraduate Science and Technology Innovation Fund [201810635040, 20171802001]
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We report the design, fabrication, and measurement of an ultra-broadband wide-angle reflective cross-polarization convertor using the compact H-shaped metasurface. The significant bandwidth expansion is attributed to the four electromagnetic resonances generated in an H-shaped unit. The simulation results show that the polarization conversion ratio (PCR) of the proposed metasurface is above 90% in the frequency range from 7 to 19.5 GHz and the relative bandwidth reaches 94%. The proposed metasurface is valid for a wide range of incident angles, and the mean polarization conversion ratio remains 80% even though the incident angle reaches 41.5 degrees. The experimental results are in good agreement with the simulation results. Compared with the previous designs, the proposed linear polarization converter has a simple geometry but an excellent performance and hence has potential applications in microwave communications, remote sensors, and imaging systems. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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