Patent ID: 8717239

Claim:
A multi-band antenna, receiving and transmitting electromagnetic wave signals of different bands, and comprising a substrate and an electro-conductive layer formed on the substrate; wherein the electro-conductive layer comprises: a feed-in terminal; a ground terminal; a connecting portion extended forward from the feed-in terminal; a first high frequency portion extended leftward from a rear end of the connecting portion to control a third frequency band; a low frequency portion bent and extended leftward from a front end of the connecting portion to control a first frequency band and a second frequency band; and a second high frequency portion extended rightward from the front end of the connecting portion to control a fourth frequency band; wherein the second high frequency portion is connected with the ground terminal and wider than the first high frequency portion; and harmonic oscillations are generated between the second high frequency portion and the first high frequency portion to control a fifth frequency band; wherein the low frequency portion comprises: a first low frequency arm extended leftward from the front end of the connecting portion; a bent sheet bent and extended forward from the rear end of the first low frequency arm; a second low frequency arm extended rightward from the bent sheet; and a third low frequency arm bent and extended forward and then downward from a rear end of the bent sheet; wherein the first low frequency arm, the second low frequency arm and the third low frequency arm are parallel to each other; a first gap is formed between the first low frequency arm and the second low frequency arm; a second gap is formed between the first low frequency arm and the third low frequency arm; and the second high frequency portion is disposed outside the first gap and the second gap.