Wireless communication device

A wireless communication device comprising:

• a housing;
• a first board placed inside the housing;
• and
• a first communication circuit, a first antenna, a second communication circuit and a second antenna each mounted on the first board, wherein
• the first communication circuit and the first antenna perform wireless communication based on a first wireless communication system using a first frequency band, and the second communication circuit and the second antenna perform wireless communication based on a second wireless communication system using the first frequency band, the second wireless communication system being different from the first wireless communication system, and
• the first antenna and the second antenna are respectively placed in a first region and a second region, wherein the first region the second region are in a diagonal spatial relationship in a plan view of the first board.