Resonant Inc.
FILTER USING LITHIUM NIOBATE AND LITHIUM TANTALATE TRANSVERSELY-EXCITED FILM BULK ACOUSTIC RESONATORS

Abstract:

Acoustic filters are disclosed. A bandpass filter has a passband between a lower band edge and an upper band edge. The bandpass filter includes a plurality of transversely-excited film bulk acoustic resonators (XBARs) connected in a ladder filter circuit. The plurality of XBARs includes at least one lithium tantalate XBAR and at least one lithium niobate XBAR.