Patent ID: 7602341
Filing Date: 2009-10-13
Classification: H01Q

Abstract:
1. A multi-band antenna, comprising: a ground; an asymmetric T-shaped radiation element, which has a first radiation part for receiving signal in a first radiation band, a second radiation part for receiving signals in a second radiation band, and a first conduction part approximately perpendicular to the first radiation part and the second radiation part, the length of the second radiation part being smaller than that of the first radiation part; an inverted L-shaped conduction element, which has a second conduction part connected to the first conduction part and arranged between the second radiation part and the ground, and a third conduction part connected approximately perpendicular to the ground; and a parasitic element to generate an additional operating band close to the second radiation band so as to enlarge a bandwidth of the second radiation band, wherein the parasitic element has a fourth conduction part connected approximately perpendicular to the ground, and a third radiation part disposed between the first radiation part and the ground.