Patent ID: 7351068

Claim:
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.