Thomson-csf

Jacques Roquencourt

Yves Commault

Georges Bonnet

Alain Sehan

An antenna having a 'suspended stripline' structure with two metal plates encircling a dielectric film is disclosed. In this structure, a channel is made for a feeder of a slot with the end of a central conductor of the line penetrating a cavity whose thickness is approximately equal to that of the channel. The slot is made in the upper wall of the cavity.

Slot hyperfrequency antenna with a structure of small thickness

A waveguide having a cross-section of oblong shape is pierced with two arrays of longitudinal slots located opposite one another, symmetrically in relation to the longitudinal plane of symmetry of the guide intersecting the cross-section thereof along its smaller dimension. In order to obtain the desired omnidirectional pattern, which requires that the distance between oppositely located slots should not be too great, a waveguide is used the greater dimension of the cross-section of which is reduced relatively to the value required by the operation frequency, and ridges or dielectric material are provided inside the guide for increasing its cut-off frequency.

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Cormeilles en Parisis, France

Jacques Roquencourt