Doubly Rotated Quartz Crystal Resonators With Reduced Sensitivity to Acceleration
AssigneeRakon Limited
InventorsDavid Salt, Ryan John Barron, Michael Shawn McIlroy
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Abstract
A doubts rotated quart/crystal resonator comprises a cantilever-mounted doubts rotated resonating element having a line of geometrical symmetry running from a supported end to a free end which is not perpendicular to the resonating element's crystallographic/axis. A method of manufacturing the crystal resonator comprises cutting a doubly rotated quartz crystal plate with xI and zI axes defining the plate's plane into one or more resonating elements at a non-zero degrees in-plane rotation angle in relation to the plate's xI axis. The resonator has reduced sensitivity to mechanical acceleration.
Claims15
-12. (canceled)
A method of manufacturing of a doubly rotated quartz crystal resonator with reduced sensitivity to mechanical acceleration comprising a cantilever-mounted doubly rotated resonating element, which method comprises the step of cutting a doubly rotated quartz crystal plate with xI and zI axes defining the plate's xIzI plane into one or more resonating elements at an in-plane rotation angle in relation to the plate's xI axis in the range from about 36° to about 56°.
A doubly rotated quartz crystal resonator with reduced sensitivity to mechanical acceleration comprising a cantilever-mounted doubly rotated resonating element having a line of geometrical symmetry running from a supported end to a free end of the cantilever-mounted resonating element wherein an angle between the line of the resonating element's geometrical symmetry and the crystallographic z axis is in the range from about 46° to about 61°.
A method of manufacturing of a doubly rotated resonating element suitable to construct a doubly rotated quartz crystal resonator with reduced sensitivity to mechanical acceleration, which method comprises the step of cutting a doubly rotated quartz crystal plate with xI and zI axes defining the plate's xIzI plane into one or more resonating elements at an in-plane rotation angle in relation to the plate's xI axis in the range from about 36° to about 56°.
A doubly rotated resonating element suitable to construct a doubly rotated quartz crystal resonator with reduced sensitivity to mechanical acceleration wherein an angle between a line of the resonating element's geometrical symmetry and the crystallographic z axis is in the range from about 46° to about 61°.
Dependencies are inferred from the claim text.