Patent ID: 8547283

Claim:
A multiband antenna comprising a ground plane and a radiating portion disposed on or above a dielectric substrate, wherein the radiating portion comprises: a first metal portion comprising a first coupling metal portion and a signal feeding line, wherein the signal feeding line is electrically connected to the first coupling metal portion and has a signal feeding point; a second metal portion comprising a second coupling metal portion and a shorting metal portion, wherein the shorting metal portion is electrically connected to the second coupling metal portion and has a shorting point electrically connected to the ground plane, and the second coupling metal portion is coupled to the first coupling metal portion and a capacitively-coupled portion is formed between the first and the second coupling metal portions; an inductively-coupled portion; and a third metal portion, wherein the inductively-coupled portion is connected between the third metal portion and the second metal portion, the first and the second metal portions enable the multiband antenna to generate a first operating band, the first, the second and the third metal portions enable the multiband antenna to generate a second operating band, wherein the frequencies of the second operating band are lower than those of the first operating band.