Apparatus and method for controlling beam in wireless communication system

A communication device for controlling a beam in a wireless communication system, the communication device comprising:

• a lens including at least one layer in which a plurality of unit cells are disposed;
• at least one processor configured to:
• determine a beam pattern, and
• control capacitance of each of the plurality of unit cells based on the beam pattern;
• and
• a transceiver configured to transmit a signal in the determined beam pattern through the lens, the lens being capacitance-controlled,
• wherein each of the plurality of unit cells includes:
• a first conductive member,
• a second conductive member disposed by overlapping at least a portion of the first conductive member, and spaced apart from the first conductive member, and
• a dielectric interposed between overlapped portions of the first conductive member and the second conductive member, and
• wherein an overlap region of the first conductive member and the second conductive member is arranged in a direction shielded from an external electromagnetic wave.