A mobile terminal comprises at last a first casing (7) and a second casing (8). First casing (7) and second casing (8) are coupled together in a manner such that the combined configuration of the first and second casings can be varied. First casing (7) has at least a radio circuit (5) and a first antenna (1) connected to the radio circuit, and second casing (8) has at least a second antenna (3). First casing (7) has a feed element (2) connected to the radio circuit. When the combined configuration of the first and second casings is a predetermined configuration, feed element (2) of the first casing and the second antenna of second casing (8) are close to each other to be capacitively coupled together, so that second antenna is connected with radio circuit through feed element via high-frequency waves.