Patent ID: 8733171

Claim:
A gyroscope that compensates frequency mismatch comprising: a top substrate including an outermost structure having a octagon shape, a first driving structure, a second driving structure, a third second driving structure, and a fourth driving structure and a first sensing structure, a second sensing structure, a third sensing structure, and a fourth sensing structure, the first, second, third, and fourth driving structures and the first, second, third, and fourth sensing structures being disposed within the outermost structure, the outermost structure being open and enclosing the first driving structure and the first sensing structure, the first driving structure and the first sensing structure including a first driving electrode and a first sensing electrode that are disposed on a bottom surface of the first driving structure and first sensing structure, respectively, a portion of the mass on the top surface of the first sensing structure being removed; and a bottom substrate that is disposed below the top substrate, the bottom substrate including a second driving electrode and a second sensing electrode that are disposed on a top surface of the bottom substrate and below the first driving electrode and the first sensing electrode.