Intelligent Metasurface for Enhanced Polarization Control for mmWave Applications

This work presents the design of an intelligent, multifunctional metasurface capable of polarization control across multiple frequency bands. In ON-state of the diode, it achieves linear-to-circular and linear-to-linear polarization conversion across three and nine bands, respectively. In the OFF state, this conversion occurs over six and twelve bands. It enables transitions between linear-to-circular and linear-to-linear polarizations, as well as alternating between reflection and polarization transformations, allowing flexible control over polarization states by altering the state of diode.