Patent ID: 6791437
Filing Date: 2004-09-14
Classification: H03H

Abstract:
A surface acoustic wave (SAW) filter, comprising:an acoustic track on a piezoelectric substrate; a number n of first interdigital transducers to input or output a signal and n+1 second interdigital transducers to output or input a signal, the first and second interdigital transducers being located between at least two reflector structures that border the acoustic track, the first interdigital transducers including a middle transducer that as split into partial transducers that are symmetric with respect to a perpendicular to a direction of propagation of a surface acoustic wave through the surface acoustic wave filter; and a housing having connections to input or output a signal via the first and second interdigital transducers, the connections being symmetric with respect to the perpendicular to produces an axis-symmetrical connection layout.