Patent ID: 7583227

Claim:
An electronic device with a built-in antenna, comprising: a housing; and an antenna substrate and a waveguide substrate both incorporated in the housing, wherein one of said antenna substrate and said waveguide substrate is fixed to an attachment part in said housing, the other substrate is disposed adjacent to said one substrate and in a standing position on said attachment part, said one substrate has an insert on an edge thereof, said the other substrate has a slit formed therein along the edge of said one substrate, and said insert is inserted into said slit; wherein said insert on said one substrate has an engaging hook for engaging with said slit in said the other substrate; wherein said one substrate has a first protrusion that is aligned with said insert and protrudes from said edge, said the other substrate has a second slit aligned with said slit and a second protrusion extending from the edge of said second slit to the inside of said second slit, and said second protrusion on said the other substrate is disposed at such a position that the second protrusion restricts the movement of said first protrusion on said one substrate in such a direction that said engaging hook is disengaged.