Multifunctional Linear Dichroism and Polarization Transforming Metasurface for mm-Wave Application

In this paper, a multifunctional metasurface is designed and developed to achieve linear-to-linear (LP-LP) and linear-to-circular (LP-CP) polarization conversion along with linear dichroism functionality. The proposed metasurface consists of split ring resonator structures printed on the top layer which perform the LP-LP, LP-CP, and absorption at two distinct frequency bands. Overall, the polarization conversion ratio (PCR) for cross-polarization conversion is greater than 90 %. The absorption ratio for linear dichroism in TM mode is higher than 85%, while the axial ratio for circular polarization conversion is less than 3 dB. The proposed metasurface can be utilized in wireless communication and satellite communication applications.