Patent ID: 7205951

Claim:
A multibeam primary radiator apparatus comprising first and second horns; said first horn having a generally circular proximal end aperture at a proximal end thereof, and a generally circular distal end aperture at a distal end thereof, said distal end aperture being larger than said proximal end aperture; said second horn having a generally circular proximal end aperture at a proximal end thereof, and a distal end aperture larger than said proximal end aperture at a distal end thereof; said first and second horns being disposed with center axes of said proximal end apertures thereof being in parallel with each other and spaced from each other by a distance smaller than a diameter of said proximal end aperture of said first horn; said distal end aperture of said second horn including a semicircular portion having a shape which is a half of a circle having a diameter larger than a diameter of the proximal end aperture of said second horn, said semicircular portion being located remote from said first horn, said distal end aperture of said second horn further including a semi-elliptical portion having a shape which is a half of an ellipse, said semi-elliptical portion being contiguous to said semicircular portion at ends thereof on a major axis of said ellipse, said semi-elliptical portion being located to occupy a void in said proximal end aperture of said first horn, an end of a minor axis of said ellipse remote from said semicircular portion being at a location outward of said proximal end aperture of said first horn.