Patent ID: 11897757
Assignee: SITIME CORPORATION
Field: Basic communication processes (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 0:
1. A micromachined resonator comprising:
a first structure formed from a silicon wafer having a crystallographic orientation, the first structure having a length extending along a first axis, the first axis having a predetermined angular offset from the crystallographic orientation, the first structure to move in resonant motion; and
a second structure also formed from the silicon wafer, the second structure having a length extending along a second axis, the second axis having a predetermined angular offset from each of the first axis and the crystallographic orientation, the second structure to move in resonant motion;
wherein the predetermined angular offset of the second axis from the crystallographic orientation is less than forty-five degrees and is the negative of the predetermined angular offset of the first axis from the crystallographic orientation; and
wherein the first structure and the second structures are structurally coupled, wherein a resonant frequency of the micromachined resonator is dependent on the first structure and the second structure, and wherein the first structure and the second structure each include an impurity dopant having concentration which is greater than 1019 cm−3.