Contactless interconnection between pcb and antenna assembly

An antenna arrangement comprising:

• a printed circuit board, PCB, having a first major surface Hay and an opposite second major surface, the PCB further comprising a plurality of solder balls soldered on the first major surface of the PCB, the PCB further comprising a conductive layer connecting the solder balls at their bases,
• an antenna module having a first major surface and an opposite second major surface, wherein the second major surface is electrically conductive and comprises at least one waveguide opening communicating with at least one antenna aperture arranged on the first major surface for transmitting or receiving electromagnetic waves of an operation wavelength λ, wherein the antenna module is arranged with the second major surface facing the first major surface of the PCB,
• wherein the solder balls are arranged to form an electromagnetic band gap, EBG, structure together with the conductive second major surface of the antenna module and the conductive layer of the first major surface of the PCB, and wherein the EBG structure delimits a waveguiding space, the antenna arrangement further comprising:
• a transmitting and/or receiving component;
• arranged on the PCB in the waveguiding space or arranged on the PCB-so as to communicate with the waveguiding space.