Arbitrary Rotation of Linear Polarization Direction

Polarization is an essential property of electromagnetic waves that has numerous applications in various fields. We introduce in this article a metasurface capable of rotating linear wave polarization to any azimuth angle. This metasurface consists of two types of substrate-integrated waveguides. in a crossed form and exhibits a high conversion efficiency from 5.9 to 6.6 GHz. One key advantage of the proposed design is its ability to maintain a high conversion efficiency regardless of the polarization rotation angle, making it an excellent candidate for use in wireless communication and imaging systems.