Abstract
We present voltage-controlled millimeter-wave beam-scanning through a fully-integrated vanadium dioxide (VO2) reconfigurable meta-surface. The meta-surface consists of a two-dimensional array of resonant unit-cells with a cross-shape metallic pattern layer constructed on a heating electrode layer. By tuning the applied voltage to the heating electrodes we control the dielectric properties of the VO2 layer of each meta-surface row and hence, we introduce a linear phase gradient across the meta-surface for the transmitted millimeter-wave through the meta-surface. As a result we scan the millimeter-wave beam direction electronically by applying appropriate voltages across the array, and achieve 44° of beam-scanning at 0.1 THz.