Patent ID: 8514140

Claim:
A dual-band antenna system comprising: a reflector; and a feed horn comprising: a cylindrical region comprising a first end and a second end, wherein the first end has a connection for a waveguide carrying both a low-frequency signal in a first band and a high-frequency signal in a second band that is higher in frequency than the first band and does not overlap the first band; and a substantially conical second region comprising a first end that is coupled to the second end of the cylindrical region and an internal surface with a variable slope, one or more slope discontinuities disposed at separated locations along the internal surface, and one or more internal diameters at the respective locations of the slope discontinuities; wherein the slope discontinuities and internal diameters are chosen to generate a low-frequency beam and a high-frequency beam that respectively have first and second beam widths that are approximately equal.