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Tunable Piezoelectric MEMS Resonators suitable for real-time clock applications

机译:适用于实时时钟应用的可调压电MEMS谐振器

摘要

A microelectromechanical resonator can include a suspended frame-shaped beam anchored at four corners thereof to a surrounding substrate along with a suspended resonator plate tethered on four sides thereof to corresponding sides of the frame-shaped beam. A pair of drive electrodes are provided on first and third diametrically opposite corners of the frame-shaped beam and a pair of sense electrodes are provided on second and fourth diametrically opposite corners of the frame-shaped beam. The resonator may also include a ground electrode on the frame-shaped beam and a piezoelectric layer sandwiched between each of the drive and sense electrodes and the ground electrode.
机译:微机电谐振器可包括在其四个角处锚定到周围基板的悬挂的框架形梁,以及在其四个侧面拴接到框架形梁的对应侧的悬挂的谐振器板。一对驱动电极设置在框架形梁的第一和第三径向相对的角上,而一对传感电极设置在框架形梁的第二和第四径向相对的角上。谐振器还可以包括在框形梁上的接地电极以及夹在每个驱动电极和感测电极与接地电极之间的压电层。

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