The present disclosure relates to a waveguide arrangement including a mounting printed circuit board, PCB, and at least a first waveguide layer. Each waveguide layer comprises at least a first waveguide conducting tube, each waveguide conducting tube having an electrically conducting inner wall. The PCB includes a signal interface for each waveguide conducting tube. The waveguide arrangement further includes at least a first coupling layer that is positioned between the PCB and the first waveguide conducting tube such that at least the first waveguide conducting tube of the first waveguide layer is connected to the corresponding signal interface via the first coupling layer.