Abstract: A transponder is disclosed to receive a wireless electromagnetic query signal and transmit a corresponding wireless electromagnetic response signal. The transponder comprises a first coil and at least one further coil that function as antennas to receive the wireless electromagnetic query signal and generate separate wired electrical incoming signals. An axis of the first coil and an axis of the at least one further coil are differently aligned in space, and each coil is associated with at least one means for limiting the voltage of the respective incoming signal. The separate wired electrical incoming signals are rectified and converted to current signals. The peak values of the current signals are detected and compared, such that a control signal is generated to identify one coil between the first coil and the at least one further coil that has a larger peak value of current.

Abstract: The invention relates to a microgyroscope for determining rotational movements about an x and/or y and z axis, comprising a substrate, several oscillating masses (4, 5), springs for fastening the oscillating masses (4, 5) to the substrate, drive elements for vibrating at least individual ones of the masses in an oscillatory manner in the x-y plane in order to produce Coriolis forces when the substrate is rotated, and sensor elements for defecting deflections of the masses (4, 5) on account of the Coriolis forces produced. At least individual ones of the masses (4, 5) are arranged in two groups. The masses (4, 5) of both groups can be jointly induced by the drive elements to carry out an oscillating primary movement in the plane of the x-y axis. The masses (4) of the first group are arranged on the substrate in such a manner that they allow movement starting from the x-y plane.

Abstract: The invention relates to an electromechanic microsensor (MEMS) (1) comprising drive elements (2, 3, 4) which are moved linearly in an x-y plane and disposed on a substrate for determining at least two, preferably three, components of the yaw rate vector of the substrate, wherein two groups of drive elements (2, 3; 4) exist, which are driven essentially in directions running essentially at right angles to each other. The electromechanic microsensor (MEMS) (1) according to the invention is characterized in that the drive elements (2, 4; 3, 4) which are moved at right angles to each other are connected to one another for synchronizing the movements by means of a coupling device (6, 7) that is rotatably mounted on the substrate.

Abstract: The invention relates to a MEMS gyroscope for detecting rotational motions about an x-, y-, and/or z-axis, in particular a 3-D sensor, containing a substrate, several, at least two, preferably four, drive masses (2) that are movable radially with respect to a center and drive elements (7) for the oscillating vibration of the drive masses (2) in order to generate Coriolis forces on the drive masses (2) in the event of rotation of the substrate about the x-, y-, and/or z-axis. The oscillating drive masses (2) are connected to at least one further non-oscillating sensor mass (3) that however can be rotated about the x-, y-, and/or z-axis together with the oscillating drive masses (2) on the substrate. Sensor elements (9, 10) are used to detect deflections of the sensor mass (3) and/or drive masses (2) in relation to the substrate due to the generated Coriolis forces. At least two, preferably four anchors (5) are used to rotatably fasten the sensor mass (3) to the substrate by means of springs (4).

Abstract: An arrangement for measuring a rate of rotation using a vibration sensor, being excited and measured by means of capacitive drive elements, and the rotation of said sensor in an axis, excited by a rotation in another axis by means of the Coriolis force, being measured by means of capacitive measuring elements. Excitation voltages can be supplied to the fixed electrodes of the drive elements, the frequency of said voltages corresponding to the resonance frequency or the subharmonic of the resonance frequency of the vibration sensor. An alternating voltage having a first measuring frequency which is higher than the excitation frequency can be supplied to capacitive elements for measuring the excited vibration.

Abstract: The invention relates to a microgyroscope for determining rotational movements about an x, y or z axis. At least one anchor is fastened to a substrate. A plurality of, in particular four, masses which oscillate radially with respect to the anchor are fastened to the anchor by means of springs. Drive elements are used to vibrate at least individual ones of the masses in an oscillatory manner in the x or y direction in order to produce Coriolis forces when the substrate is deflected. Sensor elements are used to detect deflections of the masses on account of the Coriolis forces produced. The oscillating masses are connected to at least one further, non-oscillating mass which can, however, rotate together with the oscillating masses on the substrate about the at least one anchor. A further sensor element is associated with this further mass.

Abstract: 1. Method and device for contactless sensing rotation and angular position using orientation tracking. 2.1 To improve the accuracy and possible resolution of a magnetic positioning system, a method and a device using a special tracking technique is proposed. 2.2. The method and the device are using multiple magnetic field sensing elements at different positions below a magnetic target. The sensed signals are used to select or combine the sensing elements for a best approach to the actual orientation of the magnet. This allows putting out the related orientation of the approach as a coarse value and the remaining displacement as a fine value. 2.3. A device using this method allows highly accurate measurement of angular positions controlling or tolerating the placement of a magnet as the input source.

Abstract: The present invention relates to an inertial sensor, preferably an acceleration sensor or multi-axis acceleration sensor as a microelectromechanical construction element, said sensor comprising a housing with at least one first gas-filled cavity in which a first detection unit is disposed moveably relative to the housing for detection of an acceleration to be detected, wherein the inertial sensor comprises a damping structure.

Abstract: 2.1. A new design configuration of an RF-transceiver front end is proposed. 2.2. The Power Amplifier (PA) output stage of the transceiver comprises a cascode circuitry of N-type transistors with open-drain-configuration. The cascode-transistor is acting as a common-gate-transistor, whose gate is controlled to block the transmitting-(TX) path. The Low Noise Amplifier (LNA) input stage uses a common-gate configuration of a p-channel MOS-transistor that is controlled by the voltage at the bulk terminal. Lifting the bulk potential of this PMOS-transistor above its source potential disables the receiving-(RX)-path. 2.3. This design allows low cost implementation for TDMA-RF-transceivers especially for Bluetooth-Solutions. The number of external components is reduced. No additional TX/RX switch is required. The same port and the same matching elements for the antenna's bandwidth adaptation are used for both, the TX-path and the RX-path.

Abstract: A MEMS sensor is provided with a substrate and a sensor element. The sensor element moves in response to an influence registered by the sensor primarily in an oscillating turn around a sensor axis that is parallel to the substrate. The sensor has an anchor arranged on the substrate in order to hold the sensor element onto the substrate. A connecting element arranges the sensor element on the anchor.

Abstract: A micromechanical rate-of-rotation sensor for detecting a rate of rotation about a sense axis includes a substrate, a detection unit, means for generating a rotational oscillation of the detection unit about a drive axis which is orthogonal to the sense axis, and a central suspension means rotatably coupling the detection unit to the substrate in a fulcrum of the detection unit. The central suspension means is configured to permit the detection unit to perform a detection movement about a detection axis orthogonal to the sense axis in the form of a rotational oscillation about the central suspension means. The sensor also includes at least two second suspension means coupling the detection unit and the substrate for providing a response behavior specific to rotation about at least one of the drive axis and the detection axis.

Abstract: A water flow rate sensing device for water ducts, comprising a thermal sensor (20) capable of measuring the flow by measuring the removal of heat by a heater from the water; an elongated support (9)/in particular, tubular, having the sensor (20) mounted at a free end thereof so that the support is inserted laterally with respect to the duct through a hole and cantilevered in order to keep the sensor in a central zone of the duct. The free end of the support comprises a lamina-shaped extension member. Furthermore, the device comprises means (5,7) for transmitting a measuring signal to a remote control unit. The invention comprises also a method for measuring the water flow.