KEYNOTE: X-band Plasma-Based Reflective Surface

Plasma-based reflective surfaces are a novel concept aimed at reconfiguring electromagnetic (EM) signals. These devices consist of a series of plasma discharges placed on top of a metallic ground plane. According to recently developed theoretical and numerical models, plasma-based reflective surfaces enable beam-steering and polarization control. This is possible since the EM response of plasma depends on its properties (e.g., density) that can be controlled electronically. Moreover, the plasma properties required to implement plasma-based reflective surfaces are compatible with the discharge technology at the state-of-the-art. This work reviews the recent advances in plasma-based reflective surfaces, highlighting their applicability in satellite communications and the pathway toward the realization of the first proof-of-concept.