Patent ID: 6958662
Filing Date: 2005-10-25
Classification: H01P

Abstract:
1. Device for guiding electromagnetic waves from a wave guide, to a transmission line, arranged at one end of the wave guide, comprising coupling means for mechanical fixation and impedance matching between the wave guide and the transmission line, where the coupling means comprises at least two dielectric layers being mechanically connected with a main plane of the transmission line, and where, in the at least two dielectric layers, a plurality of electrically conducting vias provide a fence-like arrangement and define the lateral dimensions of the part of the at least two dielectric layers effective for the transition of the waves, wherein said lateral dimensions of at least one of the at least two dielectric layers differ from the lateral dimensions of the other dielectric layers in a way that optimised impedance matching for a given center frequency of the electromagnetic waves is achieved, and wherein the thickness of at least one of the at least two dielectric layers differs from the thickness of the other dielectric layers and that the thickness of said at least one of the at least two dielectric layers is determined in a way that optimised impedance matching for a given center frequency of the electromagnetic waves is achieved.