| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile communication relay system which has an antenna in which the directivity in a certain direction is suppressed low, and also uses a thinner type communication device than that provided newly with a radio reflecting plate.SOLUTION: The mobile communication relay system has a first communication device for making first radio communications with a base station device, and a second communication device for making second radio communications with a mobile station device. The first communication device has a circuit board 600 providing a circuit component, and the antenna provided on the side of one surface 602 of the circuit board 600. The circuit board 600 has: the one surface 602 provided to face an arrival direction of radiowaves from the base station device; and the other surface 604 provided to face a direction of a region where the second radio communications are made. The circuit board 600 has a conductive layer 614 which reflects radiowaves on the one surface 602. |
