Surface-mount multi-band antenna

A surface-mount multi-band antenna electrically connected to a circuit board and the surface-mount multi-band antenna comprising:

• a carrier having a front face, a top face, a back face, a bottom face and two side faces;
• a first radiator comprising a rectangular region and a stripe region of different shapes, the rectangular region and the stripe region arranged on the front face, the top face, the back face, and the bottom face;
• a second radiator comprising a third rectangular region and a fourth rectangular region respectively arranged on the front face and the bottom face;
• a third radiator comprising a fifth rectangular region and a sixth rectangular region respectively arranged on the top face and the front face;
• wherein the first radiator comprises a first rectangular region arranged on one end of the bottom face of the carrier and a second rectangular region arranged on another end of the bottom face of the carrier, the second rectangular region has an opened area on the surface of the bottom face of the carrier such that the second rectangular region has a smaller contact area and a larger contact area separated by the opened area, the smaller contact area is used as signal feeding point and the larger contact area is used as a fixed contact point and for signal radiation;
• wherein the second radiator has a fourth rectangular region arranged on the bottom face of the carrier and having length of 9.9 mm, the fourth rectangular region is arranged between the first rectangular region and the second rectangular region, the fourth rectangular region has a first end and a second end, the first end is adjacent to the smaller contact area and forms a ground point, a separation between the first end and the smaller contact area is 0.75 mm.