| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device which hardly affects efficiency of operations. SOLUTION: The antenna device includes: a base body (2) mounted on a circuit board (90); and a metallic radiation conductor (31) which is provided to the base body and radiates radio waves, the radiation conductor having a lower conductor portion (34) provided to a ground surface (6) of the base body, and an upper conductor portion (32) provided to a top surface (4) of the base body, both of which face a circuit board, and a connection portion (36) which is formed integrally with the lower conductor portion and upper conductor portion to connect the lower conductor portion and upper conductor portion to each other. The base body has a side surface (10) connecting with the top surface and ground surface, the side surface having a stepped portion (12) gripping the connection portion. COPYRIGHT: (C)2009,JPO&INPIT
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