Semiconductor device and communication system including the same

A semiconductor device comprising:

• a semiconductor chip;
• and
• a semiconductor package that seals the semiconductor chip and has a substantially rectangular planar shape, wherein
• the semiconductor chip comprises:
• first and second electrode pads;
• and
• at least one of a transmission circuit that transmits a signal via the first and second electrode pads and a reception circuit that receives the signal via the first and second electrode pads,
• the semiconductor package comprises:
• an antenna formed of a lead frame;
• a first wire that connects the antenna and the first electrode pad;
• and
• a second wire that connects the antenna and the second electrode pad,
• the semiconductor chip is disposed in one of four regions in the semiconductor package that are sectioned by line segments connecting midpoints of two pairs of opposing sides of the semiconductor package, and
• a centroid of the semiconductor chip is positioned outside a closed curve that is composed of a line segment connecting by a straight line a first connection point where the antenna and the first wire are connected and a second connection point where the antenna and the second wire are connected, and a line connecting the first connection point and the second connection point along the antenna.