Patent ID: 8115565

Claim:
A waveguide arrangement having a longitudinal extension, along which an electromagnetic wave may propagate, comprising: at least one waveguide part and a feeding arrangement, where the feeding arrangement is arranged for feeding said waveguide part with a first polarization and a second polarization, said polarizations being mutually orthogonal; the feeding arrangement further comprising a dielectric carrier material having a first main side and a second main side with metallization patterns formed on said first and second main side, wherein the metallization patterns further comprise a first feeding conductor, feeding the first polarization, and a second feeding conductor, feeding the second polarization, wherein the first polarization is excited by means of first excitation means fed by said first feeding conductor, and the second polarization is excited by means of second excitation means fed by said second feeding conductor, wherein the second excitation means comprises at least one pair of tapered structures which extend in the longitudinal extension, each tapered structure among the at least one pair of tapered structures being essentially orthogonal to a taper of the first excitation means where the each tapered structure among the at least one pair of tapered structures is symmetrical with respect to a symmetry line that extends in the longitudinal extension and equally divides the first main side of the dielectric carrier material into two parts, the each tapered structure among the at least one pair of tapered structures being placed opposite each other, each tapered structure being directed away from the feeding arrangement.