Patent ID: 6131256
Filing Date: 2000-10-17
Classification: H03H,Y10T

Abstract:
A method for making a temperature compensated resonator, said method comprising steps of:providing a substrate including a cavity;providing a resonator layer including a conductor disposed on said resonator layer, said resonator layer comprising a single-crystal piezoelectric material chosen from a group consisting of lithium niobate and lithium tantalate and having a first thickness in a range of one hundred micrometers to one millimeter; andbonding said resonator layer to said substrate such that said resonator layer is disposed atop said substrate and said cavity, said step of bonding including a step of thinning said resonator layer to a second thickness less than said first thickness by a mechanical polishing technique, and wherein said step of bonding further includes a step of thinning said resonator layer to a third thickness less than said second thickness via a gas-phase etching process, and wherein said conductor is for heating said resonator layer during operation of said temperature compensated resonator in response to a current passing through said conductor.