Multi-Band Anisotropic Metasurface: Simultaneous Linear and Circular Polarization for Robust Satellite Communication

This paper presents a novel metasurface design for efficient polarization conversion in electromagnetic wave applications. To achieve linear-to-linear polarization (LLP) and linear-to-circular polarization (LCP) conversions, the metasurface was meticulously engineered. The co-reflection and cross-reflection coefficients were carefully controlled to meet specific criteria for successful LCP conversion. The results demonstrated that within the frequency bands of 11.02-11.88 GHz, 12.92-15.20 GHz, and 15.14-16.42 GHz, the metasurface effectively achieved LCP conversion with high efficiency, meeting the handedness requirements for both left-circularly polarized (LHCP) and right-circularly polarized (RHCP) waves. The proposed design exhibited excellent performance not only for normal incidence but also at oblique incidence angles of up to 45 degrees, ensuring its robustness in practical scenarios. This versatile metasurface design holds promise for a wide range of applications in satellite communications, offering efficient and stable polarization conversion capabilities within multiple frequency bands.