Patent ID: 8069542
Filing Date: 2011-12-06
Classification: H01L,H03H,Y10T

Abstract:
1. A method comprising: providing a piezoelectric substrate; forming two acoustic reflectors on the piezoelectric substrate to create an acoustic cavity between the acoustic reflectors; forming an alpha IDT on the piezoelectric substrate between the acoustic reflectors, the alpha IDT comprising a first alpha bus bar electrically coupled to a first interface and a second alpha bus bar; forming a beta IDT on the piezoelectric substrate between the acoustic reflectors, the beta IDT comprising a first beta bus bar and a second beta bus bar electrically coupled to a second interface; and forming an interleaved IDT on the piezoelectric substrate between the alpha IDT and the beta IDT, the interleaved IDT comprising a first interleaved bus bar electrically coupled to the first alpha bus bar of the alpha IDT and a second interleaved bus bar electrically coupled to the second beta bus bar of the beta IDT, each of the alpha IDT, the beta IDT, and the interleaved IDT aligned in acoustic series with each other within the acoustic cavity.