Commissariat a L'energie Atomique

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Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Thales

Elisabeth Orsier

Bernard Diem

Marc Belleville

Olivier Lefort

Cyril Condemine

H&eacute;l&egrave;ne Wehbe-Alause

Hélène Whebe-Alause

A sigma-delta modulator comprising: According to the invention, at least one resonator in the modulator is chosen from among the group comprising mechanical, acoustic, electromechanical, electrostatic, optical and chemical resonators. Application to analogue-digital conversion, signal detection and signal generation.

Bandpass sigma-delta modulator and uses of the sigma delta modulator for conversion, detection and production of signals

A vibrating structure including at least two oscillators vibrating in a direction of oscillation included in a plane, a rigid support of the oscillators, and an oscillator coupling device to couple their vibratory movements. The coupling device is connected to the rigid support and to the oscillators. Each oscillator includes at least one mass and at least one flexible arm connecting the mass to the coupling device. The coupling device includes flexible attachment mechanisms associated with at least one flexible arm of each oscillator by at least one point of attachment, making a pivot at the point of attachment.

Vibrating structure comprising two coupled oscillators, in particular for a gyro

A mechanical structure ( ) comprises a moving mass ( ) suspended by beams ( ) from a fixed frame ( ). The structure ( ) comprises elongation means ( ) mechanically connected to each of the beams ( ). The elongation means is designed such that the stiffness of the beams ( ) varies only little during movement of the moving mass. The structure is characterized in that the response of an elongation means is asymmetric when acting in tension and in compression. The structure is thus made insensitive to accelerations along a direction parallel to the suspension direction.

Micro-machined mechanical structure and device incorporating the structure

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Grenoble, France

Elisabeth Orsier