Patent ID: 7471252

Claim:
An antenna structure comprising: a board having a ground region in which a ground is formed and a non-ground region, the ground region and the non-ground region being positioned adjacent to each other such that the non-ground region is disposed on one end of the board; a dielectric base member provided in at least part of the non-ground region of the board, the dielectric base member including a first surface and a second surface next to the first surface; a feed radiation electrode provided on at least the first surface and the second surface of the dielectric base member, a first end of the feed radiation electrode defining a feed end on the first surface of the dielectric base member, a second end of the feed radiation electrode defining an open end, the feed radiation electrode being configured such that a current path extending from the feed end to the open end has a loop shape and such that a capacitance is formed between a portion of the feed radiation electrode on the first surface of the dielectric base member and the feed electrode; and a feed electrode connected to the feed end of the feed radiation electrode and provided on the side surface of the dielectric base member.