Semiconductor device

A semiconductor device comprising:

• a first plate member formed of a high-resistance material, and having a circuit surface on which a circuit is provided;
• a second plate member formed of a high-resistance material, and having a circuit surface on which a circuit is provided;
• a plurality of first flat plates serving as communication antennas, the first flat plates being disposed on the circuit surface of the first plate member;
• a first communicating section for performing communication via the first flat plates, the first communicating section being disposed on the circuit surface of the first plate member;
• a plurality of second flat plates serving as communication antennas, the second flat plates being disposed on the circuit surface of the second plate member;
• and
• a second communicating section for performing communication via the second flat plates, the second communicating section being disposed on the circuit surface of the second plate member,
• wherein the first plate member and the second plate member are arranged so that a surface of the first plate member opposite to the circuit surface faces a surface of the second plate member opposite to the circuit surface.