4 results about "Phase oscillation" patented technology

The invention relates to a micromechanical rotation rate sensor comprising: a sensor structure having drive structures and detection structures; a sensor substrate; a first partial oscillator having a first detection mass and a second detection mass; a second partial oscillator having a third detection mass and a fourth detection mass; and a coupling structure, characterised in that the coupling structure provides a mechanical coupling between the first partial oscillator and the second partial oscillator, wherein an in-phase oscillation of the first partial oscillator and the second partial oscillator is suppressed by the mechanical coupling.

True random number generators including ring oscillator circuits leveraging frequency and phase collapse events are described. An example ring oscillator circuit (ROC) includes a first oscillating loop comprising a first set of inverters, where the first oscillating loop is to oscillate at a first frequency and phase. The ROC further includes a second oscillating loop comprising a second set of inverters, which differs from the first set of inverters either in terms of a type of inverters or a number of inverters. The second oscillating loop is to oscillate at a second frequency and phase, different from the first frequency and phase. The ROC further includes a third oscillating loop to, as a result of mode switching from a first mode of operation into a second mode of operation, oscillate at a third frequency and phase, different from the first frequency and phase and the second frequency and phase.

A micromechanical angular rate sensor is described, comprising a sensor structure having drive structures and detection structures, a sensor substrate, and a first partial oscillator having a first detection mass and a second detection mass, and a second partial oscillator having a third detection mass and a fourth detection mass, and a coupling structure, characterized in that the coupling structure provides a mechanical coupling between the first partial oscillator and the second partial oscillator, wherein the mechanical coupling suppresses phase-in-phase oscillation of the first partial oscillator and the second partial oscillator.

The invention discloses a low-phase-noise voltage-controlled oscillator, and the oscillator comprises a resonance module which is used for generating a differential oscillation signal of the voltage-controlled oscillator and expanding the oscillation amplitude limit, and the differential oscillation signal comprises a negative-phase oscillation signal and a positive-phase oscillation signal; the automatic amplitude control module is used for detecting the maximum amplitude of the differential oscillation signal output by the resonance module, comparing the maximum amplitude with a preset reference voltage, and outputting a corresponding trimming current according to a comparison result; and the tail current source module is used for receiving the trimming current and the first reference current and dynamically outputting corresponding tail current to the resonance module according to the trimming current and the first reference current, and the resonance module adjusts the amplitude of the differential oscillation signal according to the tail current, so that a closed-loop amplitude control loop is formed, and oscillation amplitude self-calibration is realized. The automatic amplitude control module is arranged to form a closed-loop amplitude control loop, oscillation amplitude self-calibration is achieved, the working area of the oscillator can be effectively controlled by increasing oscillation amplitude limitation, and the phase noise performance of the oscillator is remarkably improved.