Rhumk. -D'abord on prksente une discussion brke sur les avantages des rbonateurs pikzoceramiques comme element sklectif dans l'application des filtres klectroniques. Ensuite on prksente un rksumne des types differents de rksonateurs. Une nouvelle espkce de vibration d'kpaisseur, sera introduite, c'est-a-dire le cisaillement cc radial )). Enfin le mkanisme de piegeage sdectif d'energie acoustique et ses applications dans les filtres monolithiques est traite a l'aide de l'analogue optique des rkflections internes totales.Abstract. -After a short discussion about the advantages of piezoceramic resonators as selective element in electrical filters, a survey is given of the various types of resonators. A new mode of thickness vibration is introduced, the (( radial )) thickness shear mode. Finally the selective trapping of acoustical energy and its application in monolithic filters is discussed in view of the optical analogy of total internal reflection. In the high-frequency range (> 2 MHz) a significant breakthrough has been reached in the (( monolithic lumped LC networks. Some major advantages of such 4 1 2 networks are : 1) negligibly low dissipation of power ;
L -C networkArticle published online by EDP Sciences and available at http://dx.