Electronically tunable microwave reflector

摘要

Exemplary embodiments of a structured surface are described which can efficiently reflect, steer or focus incident electromagnetic radiation. The surface impedance may be adjustable and can impart a phase shift to the incident wave using tunable electrical components of the surface. An array of electrodes interconnected by variable capacitors may be used for beam steering and phase modulation. In an exemplary embodiment, the electrodes have a circular configuration.