Thales

Georges Guillaumot

Jean-Paul Artis

Maxence Marcant

Gérard Debionne

Thierry Dousset

Michel Soiron

This invention relates to an apparatus for emission and/or reception of electromagnetic waves for aerodynes, characterised in that it comprises a blade antenna on the top of the fuselage of the aerodyne, a principal reflect-array arranged horizontally at the bottom of the blade antenna, a principal illumination horn arranged at the summit of the blade antenna, the horn illuminating the principal reflect-array, two secondary reflect-arrays arranged vertically on each side of the faces of the blade antenna, two secondary illumination horns arranged at the bottom of the blade antenna in the plane of the principal reflect-array, each horn illuminating one of the secondary reflect-arrays, each reflect-array reflecting waves emitted by the illumination horn illuminating it.

Apparatus for emission and/or reception of electromagnetic waves for aerodynes

The invention relates to a frequency dispersive antenna. The antenna comprises at least one top part and one bottom part. The top part and the bottom part comprises radiating waveguides coupled electromagnetically by way of coupling slots to a feed waveguide. The feed waveguide of the top part of the antenna does not comprise any coupling slot over a length L. The length L is chosen so as to achieve an electric length substantially equal to the electric length of the feed guide coupled to the bottom part of the antenna. In particular, the invention applies to the pinpointing of meteorological phenomena over an angular domain greater than the natural width of an airborne antenna.

Frequency dispersive antenna suitable in particular for the pinpointing of objects over an angular domain greater than the natural width of the said antenna

The invention relates to a frequency-dispersive antenna. The antenna comprises radiating waveguides on which are formed slots. The antenna comprises at least one feed waveguide linked by coupling slots to the radiating waveguides. The variation of the pointing direction of the beam from the antenna in at least one plane is 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 is greater than the distance separating the coupling slots of these two adjacent radiating waveguides. In particular, the invention applies to an airborne antenna suited to the detection and locating of meteorological phenomena.

Frequency-dispersive antenna applied in particular to a meteorological radar

The invention relates to a frequency dispersive antenna comprising radiating waveguides divided into three legs. The indirect angle between the first and second leg is greater than or equal to 90 degrees and less than 180 degrees, the direct angle between the second and third leg being greater than or equal to 90 degrees and less than 180 degrees. The antenna comprises a feed waveguide comprising a stack of elements divided into three adjacent legs, the direct angle between the first and second leg being greater than or equal to 90 degrees and less than 180 degrees, the indirect angle between the second and third leg being greater than or equal to 90 degrees and less than 180 degrees. In particular, the invention applies to an airborne antenna suitable for the detection and for the pinpointing of meteorological phenomena.

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Tigery, France

Georges Guillaumot