Holographic antenna, beam control method, electronic device, and computer readable medium

A holographic antenna, comprising:

• a dielectric substrate, a radiation layer, a reference electrode layer and a plurality of switching units;
• wherein the dielectric substrate comprises a first surface and a second surface opposite to each other;
• the radiation layer is on the first surface, and the reference electrode layer is on the second surface;
• a plurality of slit openings are in the radiation layer;
• the plurality of switching units are in a one-to-one correspondence with the plurality of slit openings, and each of the plurality of switching units is configured to control a switching state of a corresponding slit opening of the plurality of slit openings;
• wherein the holographic antenna further comprises:
• a calculation part configured to obtain an excitation amplitude of each slit opening through an amplitude sampling function according to position information, a target pointing angle and a simulation frequency of the slit opening;
• a processing part configured to discretize the excitation amplitude of the slit opening to obtain a discretization result;
• and
• a control part configured to control a switching state of the switching unit according to the discretization result, to control the switching state of the corresponding slit opening.