Abstract: A device for generating a clock signal, including a phase-locked loop including: a controlled oscillator to deliver a clock signal; plural phase comparators to compare a phase of the clock signal delivered by the controlled oscillator with plural clock signal phases applied at an input of the phase-locked loop; a mechanism for weighted summation of output signals of the plural phase comparators such that one or more of the weighting coefficients applied to one of the output signals has an absolute value that overrides the absolute values of the other weighting coefficients applied to the other output signals; and a mechanism filtering the weighted sum of the output signals of the plural phase comparators, to deliver at an output a control signal to the controlled oscillator.

Abstract: A device for generating a clock signal, including a phase-locked loop including: a controlled oscillator to deliver a clock signal; plural phase comparators to compare a phase of the clock signal delivered by the controlled oscillator with plural clock signal phases applied at an input of the phase-locked loop; a mechanism for weighted summation of output signals of the plural phase comparators such that one or more of the weighting coefficients applied to one of the output signals has an absolute value that overrides the absolute values of the other weighting coefficients applied to the other output signals; and a mechanism filtering the weighted sum of the output signals of the plural phase comparators, to deliver at an output a control signal to the controlled oscillator.

Abstract: The invention concerns a method for adjusting the operating gap of two mechanical elements of a substantially planar mechanical structure obtained by micro-etching. The method consists in attributing (A) to one of the elements (E) a fixed reference position (RF) in the direction of the residual gap separating said elements; connecting (C) the other element (OE) to the fixed reference position (RF) by an elastic link (S) and installing (D) between the fixed reference position (RF) and the other element (OE) at least a stop block defining an abutting gap, maximum displacement amplitude of the other element; subjecting (DE) the other element (OE) to a displacement antagonistic to the elastic link (S) up to the abutting position constituting the operating position, the residual gap being reduced to the difference between residual gap and abutting gap and less than the resolution of the micro-etching process. The invention is applicable to electromechanical resonators.

Abstract: The invention concerns a method for adjusting the operating gap of two mechanical elements of a substantially planar mechanical structure obtained by micro-etching. The method consists in attributing (A) to one of the elements (E) a fixed reference position (RF) in the direction of the residual gap separating said elements; connecting (C) the other element (OE) to the fixed reference position (RF) by an elastic link (S) and installing (D) between the fixed reference position (RF) and the other element (OE) at least a stop block defining an abutting gap, maximum displacement amplitude of the other element; subjecting (DE) the other element (OE) to a displacement antagonistic to the elastic link (S) up to the abutting position constituting the operating position, the residual gap being reduced to the difference between residual gap and abutting gap and less than the resolution of the micro-etching process. The invention is applicable to electromechanical resonators.

Abstract: A superheterodyne circuit includes at least one reception input, at least one production output wherefrom can be produced a baseband signal and at least one band-pass filter for channel selection interposed in the signal path between the input and the output. The filter is adapted to be connected to elements for measuring a characteristic frequency of signal passage in the filter, controllable shifting elements for frequency shift are arranged in the signal path, and control elements are provided, connected to the measuring elements and controlling the shifting elements with a supplementary signal, which compensates the difference of the measured characteristic frequency relative to a prescribed characteristic frequency value of the filter passage and whereof the frequency is determined based on the position of the path of the shifting elements relative to the filter.