A component operating with bulk acoustic waves has two Bulk Acoustic Wave (BAW) resonators that are stacked and are acoustically coupled to one another, with a first resonator being connected to an asymmetric port, and a second resonator being connected to a symmetrical port. The acoustic coupling is...http://www.google.com/patents/US6917261?utm_source=gb-gplus-sharePatent US6917261 - Component operating with bulk acoustic waves, and having asymmetric/symmetrical circuitry
