Abstract: The invention relates to a holder for a mobile radio terminal and an antenna coupler for a mobile radio terminal. The holder is provided with an interface 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 and the antenna of a mobile radio terminal which is located in the holder. The coupling structure is arranged in the holder in such a way that, when the mobile radio terminal is inserted, the coupling structure is positioned in the vicinity of the mobile radio terminal. The coupling structure is in the form of a two-layer or multilayer coupling structure with two or more coupling structure elements arranged one above the other.