A mobile communication terminal, comprising: a shell (3, 3a), and a backfire antenna, including: a main board disposed in the shell (3, 3a) and having a transmitting circuit and a receiving circuit thereon; a main antenna element coupled to the transmitting circuit and the receiving circuit, wherein the main antenna element is disposed adjacent to a lower end of the main board; and a backfire resonator coupled to the main board and the main antenna element, in which the backfire resonator is fed by the main board from a position on the main board deviated from a center of the main board, wherein there are at least two backfire resonators (6a, 6b) constituting a backfire resonator array, the backfire resonator array is located in the shell (3, 3a) at a back side of the main board and constituted by first and second backfire resonators (6a, 6b), characterized in that a first distance between an upper end of the first backfire resonator and an upper end of the main board is larger than that between the main antenna element and a lower end of the first backfire resonator, a second distance between an upper end of the second backfire resonator and the upper end of the main board is smaller than that between the main antenna element and a lower end of the second backfire resonator, the first backfire resonator is fed by the main board from a first position on the main board adjacent to the lower end of the main board through capacitive coupling or a single metal conductor, and the second backfire resonator is fed by the main board from a second position on the main board adjacent to the upper end of the main board through two metal conductors. a shell (3, 3a), and a backfire antenna, including: a main board disposed in the shell (3, 3a) and having a transmitting circuit and a receiving circuit thereon; a main antenna element coupled to the transmitting circuit and the receiving circuit, wherein the main antenna element is disposed adjacent to a lower end of the main board; and a backfire resonator coupled to the main board and the main antenna element, in which the backfire resonator is fed by the main board from a position on the main board deviated from a center of the main board, a main board disposed in the shell (3, 3a) and having a transmitting circuit and a receiving circuit thereon; a main antenna element coupled to the transmitting circuit and the receiving circuit, wherein the main antenna element is disposed adjacent to a lower end of the main board; and a backfire resonator coupled to the main board and the main antenna element, in which the backfire resonator is fed by the main board from a position on the main board deviated from a center of the main board, wherein there are at least two backfire resonators (6a, 6b) constituting a backfire resonator array, the backfire resonator array is located in the shell (3, 3a) at a back side of the main board and constituted by first and second backfire resonators (6a, 6b), characterized in that a first distance between an upper end of the first backfire resonator and an upper end of the main board is larger than that between the main antenna element and a lower end of the first backfire resonator, a second distance between an upper end of the second backfire resonator and the upper end of the main board is smaller than that between the main antenna element and a lower end of the second backfire resonator, the first backfire resonator is fed by the main board from a first position on the main board adjacent to the lower end of the main board through capacitive coupling or a single metal conductor, and the second backfire resonator is fed by the main board from a second position on the main board adjacent to the upper end of the main board through two metal conductors.