Patent ID: 8598961

Claim:
A waveguide transition arrangement in a microwave circuit comprising: a first surface-mounted waveguide part, a second surface-mounted waveguide part and a dielectric carrier material with a metallization provided on a first main side, the first surface-mounted waveguide part comprising a first wall, a second wall, and a third wall, the second and third walls each having a flange part arranged to be surface mounted to a part of the metallization, the first, second and third walls of the first surface-mounted waveguide part together essentially forming a U-shape, the second surface-mounted waveguide part comprising a first wall, a second wall and a third wall, the second and third walls each having a flange part arranged to be surface mounted to a part of the metallization, the first, second and third walls of the second surface-mounted waveguide part together essentially forming a U-shape, the dielectric carrier material further comprising a second main side with a ground plane, the first surface-mounted waveguide part comprising a first bend part having a first end and the second surface-mounted waveguide part also comprising a second bend part having a second end, where the first and second ends face each other when the first and second surface-mounted waveguide parts are mounted, wherein the metallization on the first main side is removed such that a first aperture and a second aperture are formed with respect to the first surface-mounted waveguide part and the second surface-mounted waveguide part, respectively, the first and second apertures being enclosed by a frame of via holes, the via holes electrically connecting the ground plane with the metallization on the first main side, the first bend part being fitted such that the first aperture permits passage of a microwave signal propagating via the first bend part and the second bend part being fitted such that the second aperture permits passage of a microwave signal propagating via the second bend part, such that the dielectric carrier material itself acts as a waveguide transition between the first aperture and the second aperture.