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Published on: June 7, 2019
Electromagnetic polarization conversion based on Huygens' metasurfaces with coupled electric and magnetic resonances
Abstract:
Electromagnetic (EM) polarization control is a key issue in various studies on communication and imaging systems. Two-dimensional metasurfaces have been employed to realize polarization conversion based on chiral, anisotropic structures. Herein, we employ Huygens' metasurfaces that utilize both electric and magnetic resonances when interacting with EM waves to realize polarization manipulation. Polarization conversion is achieved by introducing direct coupling between the equivalent electric and magnetic sources. A polarization conversion splitter as well as reflective and transmissive polarization convertors are designed and verified by simulations and experiments. The proposed polarization manipulation devices possess compact dimensions in the deep sub-wavelength regime and maintain good angular performance for oblique incidences up to 60°.
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