Abstract:
A MEMS array structure includes MEMS resonators that form an array. Each MEMS resonator includes beam sections. At least one of the beam sections of a first one of the MEMS resonators is a shared beam section that is also included in another of the MEMS resonators adjacent to the first MEMS resonator.
Abstract:
A plurality of mechanically coupled MEMS resonators that are arranged in an N×M MEMS array structure. Each MEMS resonators includes a plurality of straight (or substantially straight) elongated beam sections that are connected by curved/rounded sections. Each elongated beam section is connected to another elongated beam section at a distal end via the curved/rounded sections thereby forming a geometric shape (e.g., a rounded square). Further, each resonator is mechanically coupled to at least one other adjacent resonator of the array via a resonator coupling section. The resonator coupling sections may be disposed between elongated beam sections of adjacent resonators. The resonators, when induced, oscillate at the same or substantially the same frequency. The resonators oscillate in a combined elongating (or breathing) mode and bending mode; that is, the beam sections exhibit an elongating-like (or breathing-like) motion and a bending-like motion. The one or more of the resonators of the array structure may include one or more nodal points or areas (i.e., portions of the resonator that are stationary, experience little movement, and/or are substantially stationary during oscillation of the resonator/array) in one or more portions or areas of the curved sections of the structure. The nodal points are suitable and/or preferable locations to anchor the resonator/array to the substrate.
Abstract:
A microelectromechanical resonator may include one or more resonator masses that oscillates in a bulk mode and that includes a first plurality of regions each having a density, and a second plurality of regions each having a density, the density of each of the second plurality of regions differing from the density of each of the first plurality of regions. The second plurality of regions may be disposed in a non-uniform arrangement. The oscillation may include a first state in which the resonator mass is contracted, at least in part, in a first and/or a second direction, and expanded, at least in part, in a third and/or a fourth direction, the second direction being opposite the first direction, the fourth direction being opposite the third direction.
Abstract:
A system and method are provided which includes ring resonator structures coupled together with beam structure(s). The ring resonators are configured to operate in the contour or breathe mode. The center of the coupling beam structure is used as a nodal anchor point for anchoring the ring resonators and the beam structures, and also provides a reflecting interface. In an embodiment, the coupling beam structure includes two quarter-wavelength matched beams and an anchor located at a nodal point for coupling the two quarter-wavelength matched beams and ring resonator structures. The symmetric ring design also provides a differential drive and sense configuration while balancing the driving forces about the anchor located at the center of the beam structure. The system exhibits low energy losses while providing large sensing signals and a high quality factor (Q) of about 186,000 at a resonant frequency of about twenty-nine (29) MHz.
Abstract:
There are many inventions described and illustrated herein, as well as many aspects and embodiments of those inventions. In one aspect, the present invention is directed to one or more microelectromechanical ring resonator structures having a circular or substantially circular outer surface and a circular or substantially circular inner surface. The microelectromechanical ring resonator(s) include an anchor support element having an impedance matching structure coupled to at least one substrate anchor. The impedance matching structure may be a beam, having a predetermined length, which couples the ring resonator(s) to substrate anchor. In one embodiment, the impedance matching structure operates in a bulk-elongation mode. In another embodiment, the impedance matching structure operates in a flexure mode. In operation, when induced, the microelectromechanical ring resonator structure oscillates in an elongating/compressing or breathing mode (or in a primarily or substantially elongating or breathing mode). In this regard, the ring resonator structure exhibits an elongating/compressing-like or breathing-like motion.
Abstract:
There are many inventions described and illustrated herein, as well as many aspects and embodiments of those inventions. In one aspect, the present invention is directed to a resonator architecture including a plurality of in-plane vibration microelectromechanical resonators (for example, 2 or 4 resonators) that are mechanically coupled to provide, for example, a differential signal output. In one embodiment, the present invention includes four commonly shaped microelectromechanical tuning fork resonators (for example, tuning fork resonators having two or more rectangular-shaped or square-shaped tines). Each resonator is mechanically coupled to another resonator of the architecture. For example, each resonator of the architecture is mechanically coupled to another one of the resonators on one side or a corner of one of the sides. In this way, all of the resonators, when induced, vibrate at the same frequency.
Abstract:
There are many inventions described and illustrated herein, as well as many aspects and embodiments of those inventions. In one aspect, the present invention is directed to one or more microelectromechanical ring resonator structures having a circular or substantially circular outer surface and a circular or substantially circular inner surface. The microelectromechanical ring resonator(s) include an anchor support element having an impedance matching structure coupled to at least one substrate anchor. The impedance matching structure may be a beam, having a predetermined length, which couples the ring resonator(s) to substrate anchor. In one embodiment, the impedance matching structure operates in a bulk-elongation mode. In another embodiment, the impedance matching structure operates in a flexure mode. In operation, when induced, the microelectromechanical ring resonator structure oscillates in an elongating/compressing or breathing mode (or in a primarily or substantially elongating or breathing mode). In this regard, the ring resonator structure exhibits an elongating/compressing-like or breathing-like motion.
Abstract:
A microelectromechanical resonator may include one or more resonator masses that oscillates in a bulk mode and that includes a first plurality of regions each having a density, and a second plurality of regions each having a density, the density of each of the second plurality of regions differing from the density of each of the first plurality of regions. The second plurality of regions may be disposed in a non-uniform arrangement. The oscillation may include a first state in which the resonator mass is contracted, at least in part, in a first and/or a second direction, and expanded, at least in part, in a third and/or a fourth direction, the second direction being opposite the first direction, the fourth direction being opposite the third direction.
Abstract:
A MEMS array structure including a plurality of bulk mode resonators may include at least one resonator coupling section disposed between the plurality of bulk mode resonators. The plurality of resonators may oscillate by expansion and/or contraction in at least one direction/dimension. The MEMS array structure may include a plurality of sense electrodes and drive electrodes spaced apart from the plurality of bulk mode resonators by a gap. The MEMS array structure may further include at least one anchor coupling section disposed between the at least one resonator coupling section and a substrate anchor.
Abstract:
A microelectromechanical resonator may include one or more resonator masses that oscillates in a bulk mode and that includes a first plurality of regions each having a density, and a second plurality of regions each having a density, the density of each of the second plurality of regions differing from the density of each of the first plurality of regions. The second plurality of regions may be disposed in a non-uniform arrangement. The oscillation may include a first state in which the resonator mass is contracted, at least in part, in a first and/or a second direction, and expanded, at least in part, in a third and/or a fourth direction, the second direction being opposite the first direction, the fourth direction being opposite the third direction.