Abstract
Polarization converters play an important role in practical applications to manipulate the electromagnetic wave. However, the development of a polarization converter that possesses both high conversion efficiency and a wide frequency band is very challenging due to the trade-off between them. Here, we present an ultra-wideband and high-efficiency cross-polarization converter based on a double split ring shaped metasurface. The performance of the proposed converter is simulated and verified by experiments, showing a good agreement. The proposed polarization converter shows the cross-polarization conversion with a conversion efficiency above 93% in a wide frequency range from 4.0 to 14.0 GHz covering the entire C- and X-bands and a part of the Ku-band due to the combination of multi-modes of magnetic and electric resonances. Compared with other ultra-wideband polarization converters, the proposed converter shows excellent characteristics in terms of high efficiency, wide frequency band, and lightweight design, demonstrating a great potential application in C-, X-, and Ku-bands.
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