Passive reflectarray panel for enhanced wireless communication in near field coverage area and methods of designing the same

A passive reflectarray panel for near-field wireless communication applications, comprising:

• a substrate with a conductive ground plane;
• and
• an array of reflectarray cells disposed on the substrate, the array of reflectarray cells configured to produce a phase distribution on the surface of the array of reflectarray cells using a near-field pattern synthesis algorithm, wherein the phase distribution for two orthogonal linear polarizations produces a reflected radio frequency (RF) power density in near-field according to a previously defined coverage pattern, and wherein each reflectarray cell comprises:
• a first plurality of conductive elements configured to produce a first phase-shift in a first linear polarization that contributes to the power density in near-field for a first linear polarization;
• and
• a second plurality of conductive elements arranged orthogonally to the first plurality of conductive elements, configured to produce a second phase shift in a second linear polarization, orthogonal to the first polarization, that contributes to the power density in a second linear polarization with the same near-field coverage than in the first linear polarization.