Patent ID: 7286093

Claim:
An antenna, comprising: radiating waveguides, having three adjacent legs, an angle between the first leg and the central leg being in the clockwise sense greater than or equal to 90 degrees and less than 180 degrees, an angle between the central leg and the third leg being in the anticlockwise sense greater than or equal to 90 degrees and less than 180 degrees, a coupling slot being disposed on the rear face of the central leg of each radiating waveguide; a feed waveguide having a stack of elements, said elements having three adjacent legs, an angle between the first leg and the central leg being in the anticlockwise sense greater than or equal to 90 degrees and less than 180 degrees, an angle between the central leg and the third leg being in the clockwise sense greater than or equal to 90 degrees and less than 180 degrees, a coupling slot being disposed on the front face of the central leg of each element of each feed waveguide; the coupling slot of each radiating waveguide being merged with the coupling slot of an element of the feed waveguide, the central leg of each radiating waveguide being crossed with the central leg of an element of the feed waveguide, the variation of the direction of pointing of the beam of the antenna in at least one plane being obtained by varying the frequency of the wave guided by the feed waveguide, the length of the feed waveguide between the coupling slots of two adjacent radiating waveguides being greater than the distance separating the coupling slots of these two adjacent radiating waveguides.