Agence Nationale De Valorisation De La Recherche (Anvar)

Andre-Jean Berteaud

Georges Roussy

Jean-Marie Thiebaut

The invention provides a microwave feeder or applicator, that is to say a resonant chamber for coupling to a source of microwaves, arranged for the microwave treatment of a sample of material, comprising two main conductive walls extending parallel to a common axial direction and each having two projections and a central part joining the two projections, the projections of the two walls facing one another in pairs whereas the central parts of the two walls likewise face one another and define a region in which there is a local increase in the distance between the two main walls; a first conductive end wall forming a short-circuit and extending in a plane forming a cross-section of the main walls; a second conductive end wall forming a second short-circuit extending in a plane forming a cross-section of the main walls, and a coupling means for supplying microwave energy to the feeder, the dimensions of the cavity formed by the main end walls being arranged so that the cavity resonates almost exclusively in the TE.sub.11 mode, where the electric field is oriented along the cross-section of the main walls.

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Versailles, France

Andre-Jean Berteaud