Abstract: The invention relates to a holder (1) for a mobile radio terminal (0) and an antenna coupler for a mobile radio terminal. The holder is provided with an interface (50) for connection of an external antenna, in particular of a motor vehicle antenna, and with a coupling structure for electromagnetic coupling of RF signals between the holder (1) and the antenna of a mobile radio terminal (0) which is located in the holder. The coupling structure is arranged in the holder (1) in such a way that, when the mobile radio terminal (0) is inserted, the coupling structure is positioned in the vicinity of the mobile radio terminal (0). The coupling structure is in the form of a two-layer or multilayer coupling structure with two or more coupling structure elements (2, 3) arranged one above the other.