Patent ID: 6043726
Filing Date: 2000-03-28
Classification: H03H

Abstract:
A surface acoustic wave filter having resonators with transverse coupling, comprising three acoustic pathways coupled by proximity, characterized in that:a first acoustic pathway made up of a first transducer, comprising a first and a second bonding pad, and arranged between a first reflector and a second reflector, forms a first resonator,a second acoustic pathway made up of a second transducer, comprising a third bonding pad and a fourth bonding pad, and arranged between a third reflector and a fourth reflector, forms a second resonator, wherein said second pathway is adjacent to said first pathway, anda third acoustic pathway made up of a third transducer, comprising a fifth and a sixth bonding pad, and arranged between a fifth reflector and a sixth reflector, forms a third resonator, wherein said third pathway is adjacent to said second pathway, andwherein each bonding pad of the transducers is linked to a specified potential and in that the second resonator is connected in differential mode.