Abstract
In this paper, a high-efficiency and wideband converter based on a petal metasurface is proposed. This polarization converter can convert the linearly polarized incident electromagnetic wave to its orthogonal counterpart upon the reflection mode at resonance frequencies of 7.55 GHz, 14.15 GHz, 22.23 GHz, and at these three frequencies, the cross-polarization coefficient is almost 100%. The efficiency of the converter is higher than 90% from 6.81 GHz to 23.03 GHz. Moreover, its parameters of periodic and thickness are tunable. The physical mechanism is revealed by further analysis. Such a scheme of the linear polarization converter has potential applications in microwave communications, remote sensing, and imaging.
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