Patent attributes
An antenna device comprising (a) a mounting substrate having a ground portion and a non-ground portion, (b) a chip antenna mounted onto said non-ground portion, which comprises a substrate, a first radiation electrode formed on said substrate, a power-supplying electrode connected or not connected to the other end of said first radiation electrode, and a terminal electrode connected or not connected to one end of said first radiation electrode, and (c) at least one second radiation electrode formed in a conductor pattern on said non-ground portion, said second radiation electrode having one end connected or not connected to said terminal electrode and the other end which is an open end, and a cavity existing between said chip antenna and/or said second radiation electrode and said ground portion.
