Thomson-Csf

Bernard Dumont

Bernard Perrier

Jacques Rocquencourt

Robert Berland

Roland Brucker

Christiane Klein

Jean-Louis Bories

Bernard Bancelin

Jean Chambrun

Christian Proponet

This radiating slot array antenna is made out of a printed circuit sandwich structure with: a radiating plate in printed circuit form transparent to microwaves having, on its upper face, a metallization plane in which there are etched alignments of radiating slots; chutes made of a plastic material with a metallized inner wall, the chutes having their hollow part before the upper face of the radiating plate, being soldered by their edges to the metallization plane of the upper face of the radiating plate on and parallel to the alignments of radiating slots so as to overlap them, and reconstituting the three missing walls of waveguides whose fourth wall is constituted by the metallization plane etched with radiating slots of the upper face of the radiating plate; and an upper plate assembled on the back of the chutes to ensure the stiffness of the antenna. Its composition as a sandwich of printed circuits gives it high rigidity, great lightness and a low cost price.

Radiating slot array antenna

The invention relates to a cooling device for a printed circuit card and to its production process. It is constituted by a parallelepipedic copper frame, to one face of which is fixed the card. The frame is open on two opposite lateral faces orthogonal to the first face. Copper partitions, orthogonal to the first face, define passages through which the liquid or gaseous cooling fluid flows. Gaps can be made orthogonally to the first face for the passage of the fastening clips of the components. Application to printed circuit cards equipping airborne equipment.

Process for producing cooling device for printed circuit card

A structure for assembling couplex electronic circuits having a large number of external connection tabs, especially in professional equipment likely to be subjected to high degrees of vibration. The structure comprises five levels:

Structure for assembling complex electronic circuits

Growing community of inventors

Paris, France

Bernard Dumont