Patent ID: 7522104
Filing Date: 2009-04-21
Classification: H01Q

Abstract:
1. An antenna that provides three resonance frequencies, said antenna comprising: a dielectric; and an electrically conductive antenna element arranged on said dielectric, said antenna element branches into three parts configured to generate the three resonance frequencies and being connected to a single feeding point, and at least two of the three parts being electromagnetically coupled with each other so as to form one of the three resonance frequencies, wherein said antenna element has a solid structure by bending an electric conductor on said dielectric, and the three part includes: a first part that extends in a first direction and has a Z shape; a second part that extends in second direction opposite to the first direction; and a third part that extends in the second direction and then bends in a third direction perpendicular to the second direction, wherein the solid structure bends the first part in the second direction, bends the second part in the first direction, and bends the third part so as to enclose the second part that has been bent, and wherein the second part that has been bent is electromagnetically coupled with the third part that has been bent.