Patent ID: 7026996

Claim:
An antenna apparatus used for a radio communication device, comprising: a conductive plate; a main line antenna element located parallel to said conductive plate and having first and second end portions extending in different directions perpendicular to each other with said first and second end portions connected to each other, said first end portion providing a feeding point, said second end portion forming an open end; and a parasitic line antenna element located parallel to said conductive plate and having third and fourth end portions for being electrostatically coupled with said main antenna element; wherein said main line antenna element and said parasitic line antenna element are located so that said first end portion is closer to said parasitic line antenna than said second end portion and parallel to said third and said fourth end portions, and said third end portion and said fourth end portion are separated by a middle portion that is greater than either said third end portion or said fourth end portion, wherein said first end portion is arranged adjacent only one of said third end portion and said fourth end portion.