Patent ID: 7109948

Claim:
A dielectric antenna module comprising: an antenna element unit having a first dielectric substrate having an upper face and bottom face and a side face connecting edges of the upper and bottom faces of the first dielectric substrate to each other, and having radiation electrode and a signal line which are formed on the upper face of the first dielectric substrate; and a module substrate unit having a second dielectric substrate having an upper face and bottom face and a side face connecting edges of the upper and bottom faces of the second dielectric substrate to each other, and having a signal processing circuit formed on the second dielectric substrate, wherein one of the side faces of said first and second dielectric substrates has a projection and the other of the side faces of said first and second dielectric substrates has a recess having a shape corresponding to that of the projection, said antenna element unit and said module substrate unit are disposed so that the bottom faces of said first and second dielectric substrates are in a common single plane, and the side faces of said first and second dielectric substrates are opposed and connected to each other by fitting the projection to the recess, and wherein signal lines are formed on the opposed side faces of said first and second dielectric substrates, a ground electrode is formed on at least one of the opposed side faces of said first and second dielectric substrates, and said signal lines on the opposed side faces are electrically connected to each other.