SURFACE ACOUSTIC WAVE COMPONENT AND METHOD FOR PRODUCING IT

• Main Authors: WINKLER, ANDREAS, MENZEL, SIEGFRIED
• Format: Patent
• Language: English; French; German
• Published: 15.10.2014
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

The invention is concerned with the field of electrical engineering/ acoustoelectronics and relates to a surface acoustic wave component such as can be used for example as a filter component in mobile telephones. The problem addressed by the present invention is that of specifying a surface acoustic wave component in which the degradation of the IDT is significantly reduced. The problem is solved by the invention specified in the claims. The dependent claims relate to advantageous configurations. The surface acoustic wave component according to the invention consists at least of a piezoelectric material, interdigital transducers, a non-piezoelectric material and electrical contact-connections, wherein the interdigital transducers are connected to the non-piezoelectric material at least in a force-locking and/or a positively locking manner and they can excite surface waves in the piezoelectric material, and, at least partly in the region of the aperture of interdigital transducers, the interdigital transducers are mechanically decoupled from the piezoelectric material.