Coupled antenna, antenna device and electronic equipment

The utility model discloses a coupled antenna, an antenna device and electronic equipment, the electronic equipment can be applied to an FTTR scene, and the coupled antenna comprises a feed structure, a conductive structure surrounding the feed structure and a first feed line electrically connected with the feed structure; the feed structure comprises a signal line part and a branch part which are connected, and in the length direction of the coupled antenna, the end, close to the signal line part, of the branch part is smaller than the end, away from the signal line part, of the branch part; the conductive structure and the feed structure are spaced; the first feeder line comprises a first outer conductor and a first inner conductor, the first inner conductor is arranged in the first outer conductor and is electrically isolated from the first outer conductor, the first inner conductor crosses the conductive structure to be connected with the signal line part of the feed structure, and the first outer conductor is electrically connected with the conductive structure. The size of one end, close to the signal line part, of the branch part is smaller than that of one end, away from the signal line part, of the branch part, so that the size of the whole feed structure can be reduced, and the size of the whole coupled antenna can be reduced.