Method for making a microwave window and resulting window

The invention relates to a method of manufacturing a microwave window for the separation of media comprising a separating disk transparent to the electromagnetic microwaves and at least one collet in the form of a circular cylindrical tube brazed via of the two faces of the disk, characterized in that it includes at least one step consisting in depositing a thin film of active braze on that edge of the collet which is intended to be brazed onto one of the two faces of the disk, and then in brazing the tube onto the disk. The invention also relates to a media-separating microwave window resulting from the process, having at least one collet in the form of a circular cylindrical tube with a generatrix close to a straight line. Applications: high-power microwave tubes, microwave transmission lines.