Patent ID: 7312754
Filing Date: 2007-12-25
Classification: G06K,H01Q

Abstract:
1. A planar antenna comprising: a board having an upper surface on which a planar antenna element pattern is formed; a probe for feeding to said planer antenna element pattern by electromagnetic coupling; a ground plate; a base having a groove in which said probe is disposed, said base being disposed between said ground plate and said board; and a fastening member which fastens said board to said ground plate with said base sandwiched therebetween; wherein said ground plate has an upper surface on which said base is disposed, and said base has an upper surface on which said board is disposed, so that said base is directly sandwiched between the ground plate and the board; wherein said fastening member comprises: (i) a case disposed on the upper surface of said board, said case having N bosses which extend downwards and which have N screw holes, where N represents an integer which is not less than three; and (ii) N screws threaded in said N screw holes from a side of the ground plate; and wherein said board has N notches passing through said N bosses, and said base has N notches passing through said N bosses.