Journal
JOURNAL OF APPLIED PHYSICS
Volume 117, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4906220
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Funding
- National Natural Science Foundation of China [61331005, 11204378, 11274389, 11304393, 61302023]
- Aviation Science Foundation of China [20132796018, 20123196015]
- National Science Foundation for Post-doctoral Scientists of China [2013M532131, 2013M532221]
- Natural Science Foundation of Shaanxi Province [2013JM6005]
- Special Funds for Authors of Annual Excellent Doctoral Degree Dissertations of China [201242]
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In this paper, we propose to achieve wideband linear-to-circular (LTC) polarization conversion by ultra-thin bi-layered metasurfaces. As an example, an LTC polarization conversion metasurface operating in 11.4-14.3 GHz is designed and fabricated, which is composed of two layers of metallic pattern arrays separated by a 1.5 mm-thick dielectric spacer. When linearly polarized waves impinge on the bi-layered metasurface, LTC polarization conversion transmission is greater than 90% over a wide frequency range from 11.0 GHz to 18.3 GHz. Meanwhile, the axis ratio is lower than 3 dB in 9.8-18.3 GHz. This wide-band and highly efficient LTC polarization conversion transmission is analyzed theoretically. The measured LTC polarization conversion transmissions are well consistent with the simulated results. (C) 2015 AIP Publishing LLC.
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