Reflecting device

A reflecting device, comprising:

• an intelligent reflecting surface system in which a plurality of intelligent reflecting surfaces each including a reflecting antenna portion for reflecting a radio wave are arranged in a matrix in a first direction and a second direction orthogonal to the first direction;
• and
• a control device for controlling a reflection direction of the radio wave reflected by the reflective antenna portion of each of the plurality of intelligent reflecting surfaces,
• wherein a first intelligent reflecting surface and a second intelligent reflecting surface disposed in the first direction from the first intelligent reflecting surface among the plurality of intelligent reflecting surfaces includes a first receiving antenna cell and a second receiving antenna cell, respectively,
• wherein the reflecting antenna portion comprises a plurality of reflecting antenna cells arranged in a matrix in the first direction and the second direction,
• wherein each of the plurality of reflecting antenna cells comprises:
• a first patch electrode,
• a first ground electrode overlapping the first patch electrode, and
• a liquid crystal layer between the first patch electrode and the first ground electrode,
• wherein the control device comprises:
• a radio wave acquisition section for acquiring a first intensity of the radio wave received by the first receiving antenna cell and a second intensity of the radio wave received by the second receiving antenna cell,
• an angle deviation calculation section for calculating a first angle deviation of a normal direction to a surface of the intelligent reflecting surface in the first direction based on a difference between the first intensity and the second intensity, and
• a control voltage generation section for generating a control voltage to be applied to the first patch electrode of each of the plurality of reflecting antenna cells, and
• wherein the control voltage is generated based on the first angle deviation.