Horn for Ka dual-band circularly polarized satellite antenna
AssigneeThales
InventorBertrand Boin
Life of this patent
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Abstract
An antenna horn includes a waveguide having an open end and an end allowing access to transmitted signals, the widest opposite walls constituting a first pair of walls, two first ridges inside the waveguide, in the middle and over the whole length of the walls of the first pair of walls, a flat central wall connecting the walls of the second pair of walls at their midpoints at the level of the accesses, stopping in the direction of the open end so as to polarize signals transmitted by the two accesses according to orthogonal circular polarizations, and forming two ridges in the middle of the walls of the second pair of walls from the side of the open end, and with an antenna, an item of radio communication equipment and a method using the horn.
Claims12
An antenna horn, comprising:
- a waveguide extending along a longitudinal axis, the waveguide having an open end and an end allowing access to signals transmitted in the waveguide, the widest opposite walls of the waveguide constituting a first pair of walls of the waveguide and the other two walls of the waveguide constituting a second pair of walls of the waveguide, the antenna horn comprising:
- two first ridges extending along the longitudinal axis inside the waveguide, in the middle and over the whole length of each of the walls of the first pair of walls,
- a flat central wall extending in the waveguide along the longitudinal axis, the central wall being configured so as, at the end allowing access to the signals transmitted in the waveguide, to connect the two walls of the second pair of walls at their midpoints, thus forming two separate accesses to said signals, and at the open end of the waveguide to stop so as to polarize signals transmitted by the two accesses according to orthogonal circular polarizations, the central wall forming two second ridges extending along the longitudinal axis in the middle of each of the walls of the second pair of walls from the open end of the waveguide.
Dependencies are inferred from the claim text.