Abstract: A microelectromechanical gyroscope which comprises one or more Coriolis masses driven by a drive transducer and a force-feedback system. The force-feedback circuit comprises first and second sideband modulators and the self-test circuit comprises first and second sideband demodulators.

Abstract: The present invention relates to an elongated catheter comprising a tubular section with a side wall with essentially annular cross-section defined by an outer surface and an inner surface of the tubular section. In the outer surface of the tubular section, there is at least one longitudinal installation recess extending over a first predefined distance over the longitudinal dimension of the catheter. A flexible circuit board is wrapped around the tubular section. Electrical wiring is disposed on the outer surface of the tubular section. At least one electronic device is assembled on the flexible circuit board and disposed within the at least one longitudinal installation recess. The at least one electronic device is interconnected via the flexible circuit board with the electrical wiring.

Abstract: An electrical component including a substrate, a first dielectric layer on the substrate, a redistribution layer pad on the first dielectric layer, and a component interconnection element on the redistribution layer pad so that the component interconnection element fills an opening in the second dielectric layer. The opening includes at least one protrusion between the component interconnection element solder ball metallization and the redistribution layer pad.

Abstract: This disclosure describes a multiaxis gyroscope comprising a first proof mass quartet centered around a first quartet center point and a second proof mass quartet centered around a second quartet center point. The phase of the primary oscillation of each proof mass in the first proof mass quartet in relation to the first quartet center point is anti-phase in relation to the phase of the primary oscillation of the corresponding proof mass in the second proof mass quartet in relation to the second quartet center point. The phase of the primary oscillation of the first and second proof masses in each proof mass quartet in relation to the corresponding quartet center point is anti-phase in relation to the phase of the primary oscillation of the third and fourth proof masses in the same proof mass quartet in relation to the same quartet center point.

Abstract: A microelectromechanical gyroscope comprising a force-feedback circuit with a sideband modulator configured to impart to a mechanical oscillator a modulated force-feedback signal, and a frequency-feedback circuit which receives from the oscillator a modulated sense signal and is configured to keep the phase of the secondary resonant frequency of the oscillator equal to its primary oscillation frequency.

Abstract: The disclosure describes a z-axis gyroscope where a proof mass is suspended from a peripheral suspender and a central suspender. The peripheral suspender forms a truncated triangle around the proof mass, and the central suspender extends through the truncated corner of the triangle formed by the peripheral suspender. The proof mass is driven into a primary oscillation mode by one or more piezoelectric drive transducers located on the peripheral suspender. One or more piezoelectric sense transducers located on the base of the peripheral suspender are configured to detect the secondary oscillation mode of the proof mass.

Abstract: The present invention relates to a method for cancelling effects of changes in interconnection capacitances on capacitive sensor readings, and an apparatus configure to perform such method. The sensor readings are provided by a capacitive sensor connected with an interface circuitry. The interface circuitry has at least two interconnections comprising a sensor interconnection and a compensating interconnection. The method comprises obtaining a total sensor capacitance value from the capacitive sensor, and obtaining a total compensating interconnection capacitance value from the compensating interconnection, calculating a compensated sensor capacitance value by reducing the obtained total compensating interconnection capacitance value multiplied with a weight coefficient from the obtained total sensor capacitance value and providing at an output of the interface circuitry an electrical signal corresponding to the compensated sensor capacitance value.

Abstract: A ring gyroscope which comprises first and second transversal symmetry axes and first and second diagonal symmetry axes in the ring plane. The gyroscope further comprises one or more primary piezoelectric split transducers configured to drive the ring into resonance oscillation and one or more secondary piezoelectric split transducers configured to sense the oscillation of the ring. The gyroscope further comprises four or more mass elements which form a symmetrical mass distribution in relation to both the first and second transversal symmetry axes and to the first and second diagonal symmetry axes, wherein each mass element is attached to the ring from a bridge connector and the bridge connectors are evenly distributed along the ring.

Abstract: An electrical component including a substrate, a first dielectric layer on the substrate, a redistribution layer pad on the first dielectric layer, and a component interconnection element on the redistribution layer pad so that the component interconnection element fills an opening in the second dielectric layer. The opening includes at least one protrusion between the component interconnection element solder ball metallization and the redistribution layer pad.

Abstract: A microelectromechanical gyroscope which comprises one or more Coriolis masses driven by a drive transducer and a force-feedback system. The force-feedback circuit comprises first and second sideband modulators and the self-test circuit comprises first and second sideband demodulators.

Abstract: A ring gyroscope which comprises a substantially circular and flexible ring which defines a ring plane, one or more primary piezoelectric split transducers configured to drive the ring into resonance oscillation, four or more mass elements which form a symmetrical mass distribution in relation to both a first and a second transversal symmetry axis and to a first and a second diagonal symmetry axis. The ring gyroscope also comprises a suspension structure configured to support the weight of the ring and the mass elements, wherein the suspension structure comprises N outer suspenders, where N is an integer greater than or equal to two, and each outer suspender extends along a ring tangent from a suspension attachment point on the outer edge of the ring to an anchor point.

Abstract: A microelectromechanical gyroscope comprising a force-feedback circuit with a sideband modulator configured to impart to a mechanical oscillator a modulated force-feedback signal, and a frequency-feedback circuit which receives from the oscillator a modulated sense signal and is configured to keep the phase of the secondary resonant frequency of the oscillator equal to its primary oscillation frequency.

Abstract: This disclosure describes a multiaxis gyroscope comprising a first proof mass quartet centered around a first quartet center point and a second proof mass quartet centered around a second quartet center point. In the primary oscillation mode all masses in each proof mass quartet move simultaneously either radially toward and away from the corresponding quartet center point, or in the same tangential direction in relation to the corresponding quartet center point.

Abstract: A ring gyroscope which comprises a substantially circular and flexible ring suspended from a substrate. The gyroscope comprises one or more primary piezoelectric split transducers placed on first sectors of the ring and one or more secondary piezoelectric split transducers placed on one or more second sectors of the ring. Each first sector crosses a transversal symmetry axis (T1, T2) of the ring and is symmetric with respect to that symmetry axis, and each second sector crosses a diagonal symmetry axis (D1, D2) of the ring and is symmetric with respect to that symmetry axis.

Abstract: A microelectromechanical z-axis gyroscope which comprises a proof mass system centred around a gyroscope center point. The oscillation of first and second proof mass pairs is synchronized by a substantially circular synchronization element which is centred at the gyroscope center point and comprises four first attachment points. Each proof mass is attached to the nearest first attachment point on the substantially circular synchronization element. The substantially circular synchronization element also comprises two or more second attachment points, and a substantially linear suspender extends tangentially from each second attachment point to an anchor point.

Abstract: The disclosure relates to a microelectromechanical gyroscope which comprises first and second proof masses which form a first proof mass pair and third and fourth proof masses which form a second proof mass pair. The oscillation of the first and second proof mass pairs is synchronized by a synchronization element which comprises a ringlike body and torsion bars which extend along the x-axis from the ringlike body to the first, second, third and fourth proof masses.

Abstract: A packaged circuit system structure with circuit elements embedded into a bulk material. At least one of the embedded circuit elements forms a dual coupling that includes an electrical connection to a signal ground potential on one side of the structure and an electrical connection to a conductive layer on the other side of the structure. The conductive layer extends over at least one embedded circuit element that does not form a dual coupling, and thereby provides an effective EMI shielding for it.

Abstract: This disclosure reveals a resonator where at least one suspended inertial mass is driven into rotational oscillation by a piezoelectric drive transducer, or where the rotational motion of at least one suspended inertial mass is sensed by a piezoelectric sense transducer. The disclosure is based on the idea of suspending the inertial mass with a one-sided suspender arrangement, where only one suspender is attached to each anchor point, and on the optimal positioning of the suspender in relation to the effective center of gravity of the resonator. The resonator may be employed in a resonator system, a clock oscillator or a gyroscope.

Abstract: This disclosure reveals a resonator where at least one suspended inertial mass is driven into rotational oscillation by a piezoelectric drive transducer, or where the rotational motion of at least one suspended inertial mass is sensed by a piezoelectric sense transducer. The disclosure is based on the idea of attaching suspenders to the inertial mass with at least one flexure, which allows the end of the suspender which is attached to the inertial mass to rotate in relation to the inertial mass at this attachment point when the inertial mass is in motion. The resonator may be employed in a resonator system, a clock oscillator or a gyroscope.

Abstract: The present invention relates to an elongated rapid exchange catheter configured to measure fractional flow reserve of a patient. The catheter comprises a shaft and a distal portion coupled to a distal end of the shaft. The distal portion comprises a lumen configured for inserting a guide wire, and an entry via in a side wall of the lumen for inserting the guide wire into the lumen. The entry via is disposed closer to the proximal end of the distal portion than the distal end of the distal portion. The catheter further comprises plurality of sensing devices comprising at least one distal sensing device disposed at the distal portion and a proximal sensing device. The at least one distal sensing device and the proximal sensing device are disposed at a predefined distance from each other along the longitudinal dimension of the catheter. The proximal sensing device is disposed on the proximal side of the entry via.