Dual-band antenna

The invention provides a double frequency antenna, which is used for receiving and sending electromagnetic wave signals. The double frequency antenna comprises an antenna body, a feed-in terminal and an earth terminal, wherein the antenna body comprises a matching part, a high frequency part and a low frequency part which are arranged in the same plane, the matching part is used for regulating impedance matching of the double frequency antenna and comprises a first connecting end and a second connecting end, the high frequency part is connected with the first connecting end of the matching part, a first groove is arranged between the high frequency part and the matching part, the low frequency part is connected with the second connecting end of the matching part, a second groove is arranged among the low frequency part, the matching part and the high frequency part, and the feed-in terminal and the earth terminal are both arranged on the matching part.