Patent ID: 7242354

Claim:
An antenna unit provided in a wireless communication apparatus which performs wireless communication, said antenna unit comprising: a radio wave resonance part through which a radio wave is transmitted or received, the radio wave resonance part comprising a radio wave resonance side part and a radio wave resonance upper part; an antenna ground part electrically connected to said radio wave resonance part, wherein the radio wave resonance upper part is opposed to the antenna ground part and is approximately parallel to the antenna ground part, and further wherein the radio wave resonance side part is approximately perpendicular to the antenna ground part and the radio wave resonance upper part and couples the radio wave resonance upper part and the antenna around part such that the radio wave resonance upper part and the radio wave resonance side part form a U-shaped member; and a connection part which fixes said antenna ground part at such a position that said antenna ground part is closer to said radio wave resonance part than other ground parts of the wireless communication apparatus.