Patent ID: 6995720

Claim:
An antenna comprising: a support board having a ground conductor formed thereon; an insulating base disposed on the support board, the insulating base having an opening end and an internal space; a first radiation conductor plate disposed such that an opening end is covered with the first radiation conductor plate, the first radiation conductor plate having a bending flap that is bent from the opening end of the insulating base towards a side wall of the insulating base, the bending flap having at least one of a cutaway portion that reduces a current path length and a cutout portion that increases the current path length, the first radiation conductor plate having a first resonant frequency; a feed conductor plate having a first end connected with the first radiation conductor plate; a first short-circuiting conductor plate having a first end connected with the first radiation conductor plate and a second end connected with the ground conductor; and a second radiation conductor plate disposed in the internal space of the insulating base so as to be connected with a second end of the feed conductor plate, the second radiation conductor plate having a second resonant frequency higher than the first resonant frequency.