Inventors:
David Hula - Fort Collins CO, US
Carrie Guthrie - Fort Collins CO, US
Ronnie Varghese - Fort Collins CO, US
Stephen Miller - Fort Collins CO, US
Jennifer Bradford - Corvallis OR, US
International Classification:
H03H009/54
US Classification:
333/188000, 333/189000, 310/312000
Abstract:
A method and apparatus is presented. The method produces a Film Bulk Acoustic Resonator (FBAR) structure. A piezoelectric layer is provided and a series of manufacturing steps are performed to deposit a thin mass-load layer above the piezoelectric layer. Further, an electrode material is deposited on the thin mass-load layer after portions of the thin mass-load layer have been removed. The electrode material includes a non-mass-loaded region positioned above the piezoelectric layer and a mass-loaded region positioned above the mass-load layer.