The invention relates to the technical field of mobile communication, and discloses an antenna for solving the technical problem that in the prior art, up and down links are asymmetric. The antenna comprises antenna subarrays for transmitting K-way transmitting signals and receiving K-way receiving signals, K feed networks, K sets of combining and branching filters separately connected with the K feed networks, a processing module connected with the K sets of combining and branching filters for acquiring the K-way transmitting signals based on N-way transmitting signals and acquiring M-way receiving signals based on K-way receiving signals, wherein the ith feed network of the K feed networks is connected with the ith antenna array of K antenna arrays, and N and M are different positive integers. As appropriate N and M values can be determined according to expected data transmission rates at the data sending end and the data receiving end, up and down rates are matched with each other, so that the technical effect of symmetric up and down links is realized.