Patent application number | Description | Published |
20090201344 | DEVICE AND METHOD FOR DELIVERING A FLUID IN FORM OF A HIGH-SPEED MICRO-JET - The present invention relates to a device and method for delivering a fluid in the form of a high-speed micro-jet. In order to provide a small and low-cost device for delivering a fluid in the form of a high-speed micro-jet, a device ( | 08-13-2009 |
20100182730 | FERROELECTRIC VARACTOR WITH IMPROVED TUNING RANGE - The present invention relates to a ferroelectric varactor ( | 07-22-2010 |
20100182731 | TUNABLE MEMS CAPACITOR - A MEMS tunable capacitor comprises first and second opposing capacitor electrodes ( | 07-22-2010 |
20100202254 | CMUTS WITH A HIGH-K DIELECTRIC - A capacitive ultrasound transducer includes a first electrode, a second electrode, and a third electrode, the third electrode including a central region disposed in collapsibly spaced relation with the first electrode, and a peripheral region disposed outward of the central region and disposed in collapsibly spaced relation with the second electrode. The transducer further includes a layer of a high dielectric constant material disposed between the third electrode and the first electrode, and between the third electrode and the second electrode. The transducer may be operable in a collapsed mode wherein the peripheral region of the third electrode oscillates relative to the second electrode, and the central region of the third electrode is fully collapsed with respect to the first electrode such that the dielectric layer is sandwiched therebetween. Piezoelectric actuation, such as d31 and d33 mode piezoelectric actuation, may further be included. A medical imaging system includes an array of such capacitive ultrasound transducers disposed on a common substrate. | 08-12-2010 |
20100277040 | THIN FILM DETECTOR FOR PRESENCE DETECTION - A transducer ( | 11-04-2010 |
20110038093 | TURNABLE CAPACITOR AND SWITCH USING MEMS WITH PHASE CHANGE MATERIAL - The present invention relates to a MEMS, being developed for e.g. a mobile communication application, such as switch, tunable capacitor, tunable filter, phase shifter, multiplexer, voltage controlled oscillator, and tunable matching network. The volume change of phase-change layer is used for a bi-stable actuation of the MEMS device. The MEMS device comprises at least a bendable cantilever, a phase change layer, and electrodes. A process to implement this device and a method for using is given. | 02-17-2011 |
20110102095 | MEMS RESONATOR FOR FILTERING AND MIXING - A method of operating a micro-electromechanical system, comprising a resonator; an actuation electrode; and a first detection electrode, to filter and mix a plurality of signals. The method comprises applying a first alternating voltage signal to the actuation electrode, wherein an actuation force is generated having a frequency bandwidth that is greater than and includes a resonant bandwidth of a mechanical frequency response of the resonator, and wherein a displacement of the resonator is produced which is filtered by the mechanical frequency response and varies a value of an electrical characteristic of the first detection electrode. The method also comprises applying a second alternating voltage signal to the first detection electrode, wherein the second voltage signal is mixed with the varying value to produce a first alternating current signal. The first alternating current signal is detected at the first detection electrode. | 05-05-2011 |
20110120843 | PIEZOELECTRIC BIMORPH SWITCH - The present invention relates to a piezoelectric bimorph switch, specifically a cantilever (single clamped beam) switch, which can be actively opened and closed. Piezoelectric bimorph switch are known from the prior art. Such a switch may be regarded as an actuator. Actuators are regarded as a subdivision of transducers. They are devices, which transform an input signal (mainly an electrical signal) into motion. Electrical motors, pneumatic actuators, hydraulic pistons, relays, comb drive, piezoelectric actuators, thermal bimorphs, Digital Micromirror Devices and electroactive polymers are some examples of such actuators. The switch of the invention comprises piezoelectric stack layers ( | 05-26-2011 |
20110137166 | TRANSDUCER ARRANGEMENT AND METHOD FOR ACQUIRING SONO-ELASTOGRAPHICAL DATA AND ULTRASONIC DATA OF A MATERIAL - The present invention relates to a transducer arrangement, particularly a transducer arrangement for acquiring tissue information, a method for using a transducer arrangement for acquiring tissue information and a glove which comprises a transducer arrangement. The transducer arrangement | 06-09-2011 |
20110163161 | RECONFIGURABLE RADIO-FREQUENCY FRONT-END - A reconfigurable radio-frequency front-end | 07-07-2011 |
20110198725 | GENERATING AND EXPLOITING AN ASYMMETRIC CAPACITANCE HYSTERESIS OF FERROELECTRIC MIM CAPACITORS - The present invention relates to an electric component comprising at least one first MIM capacitor having a ferroelectric insulator with a dielectric constant of at least 100 between a first capacitor electrode of a first electrode material and a second capacitor electrode of a second electrode material. The first and second electrode materials are selected such that the first MIM capacitor exhibits, as a function of a DC voltage applicable between the first and second electrodes, an asymmetric capacity hysteresis that lets the first MIM capacitor, in absence of the DC voltage, assume one of at least two possible distinct capacitance values, in dependence on a polarity of a switching voltage last applied to the capacitor, the switching voltage having an amount larger than a threshold-voltage amount. The invention is applicable for ESD sensors, memories and high-frequency devices. | 08-18-2011 |
20110278952 | CAPACITIVE DC-DC CONVERTER - A charge-pump capacitive DC-DC converter ( | 11-17-2011 |
20110292574 | HIGH DENSITY CAPACITOR - A high density capacitor | 12-01-2011 |
20120044612 | TANTALUM-BASED ELECTRODE STACK - An electronic device includes a metal-insulator-metal capacitive device. In connection with an example embodiment, a metal-insulator-metal (MIM) capacitor device is in a substrate having a surface and a three dimensional structure with high aspect ratio sidewalls. The MIM capacitor device includes a first capacitor electrode including a platinum group metal (PGM)-based layer and a Ta-based layer that is between the PGM-based layer and one of the sidewalls. The MIM capacitor also includes a second capacitor electrode and an insulator material between the first and second electrodes. | 02-23-2012 |
20120055768 | MEMS ELECTROSTATIC ACTUATOR - A MEMS electrostatic actuator comprises first and second opposing electrode arrangements, wherein at least one of the electrode arrangements is movable. A dielectric material ( | 03-08-2012 |
20120091546 | Microphone - A microphone comprises a substrate ( | 04-19-2012 |
20120139065 | MEMS DEVICE AND MANUFACTURING METHOD - A MEMS manufacturing method and device in which a spacer layer is provided over a side wall of at least one opening in a structural layer which will define the movable MEMS element. The opening extends below the structural layer. The spacer layer forms a side wall portion over the side wall of the at least one opening and also extends below the level of the structural layer to form a contact area. | 06-07-2012 |
20120286588 | MEMS SWITCHING CIRCUIT - A switching circuit employs MEMS devices. In connection with various example embodiments, signal switching circuit couples primary and secondary data link connectors having at least two channels and an electrode for each channel. A MEMS switch is coupled to each channel in of the secondary data link connectors, and includes a suspended membrane, first and second contact electrodes (one being in the membrane) and a biasing circuit that biases the membrane for moving the membrane between open and closed positions to contact the electrodes. A switch controller circuit selectively controls the application of an actuation voltage to each of the biasing circuits, thereby selectively actuating the membranes between the open and closed positions for routing signals between the primary and secondary data link connectors. | 11-15-2012 |
20120286846 | SWITCHING CIRCUIT - A switching circuit employs switches operating at low on resistance and high off capacitance. In connection with various example embodiments, a switching circuit selectively couples a communication port to one of two or more internal circuits based upon a type of input at the communication port. A sensor circuit senses the type of the input and, based upon the sensed input type, actuates one or more switches in the switching circuit. | 11-15-2012 |
20120305374 | MEMS SWITCH - A MEMS switch in which at least first, second and third signal lines are provided over the substrate, which each terminate at a connection region. A lower actuation electrode arrangement is over the substrate. A movable contact electrode is suspended over the connection regions for making or breaking electrical contact between at least two of the three connection regions and an upper actuation electrode provided over the lower actuation electrode. | 12-06-2012 |
20130056840 | ACOUSTIC TRANSDUCERS WITH PERFORATED MEMBRANES - A MEMS device, such as a microphone, uses a fixed perforated plate. The fixed plate comprises an array of holes across the plate area. At least a set of the holes adjacent the outer periphery comprises a plurality of rows of elongate holes, the rows at different distances from the periphery. This design improves the mechanical robustness of the membrane and can additionally allow tuning of the mechanical behaviour of the plate. | 03-07-2013 |
20130118265 | MEMS CAPACITIVE PRESSURE SENSOR, OPERATING METHOD AND MANUFACTURING METHOD - A MEMS pressure sensor wherein at least one of the electrode arrangements comprises an inner electrode and an outer electrode arranged around the inner electrode. The capacitances associated with the inner electrode and the outer electrode are independently measured and can be differentially measured. This arrangement enables various different read out schemes to be implemented and also enables improved compensation for variations between devices or changes in device characteristics over time. | 05-16-2013 |
20130279717 | SENSOR CIRCUIT AND CALIBRATION METHOD - A read out circuit for a sensor uses a feedback loop to bias the sensor to a desired operating point, such as the maximal possible sensitivity, but without the problem of an instable sensor position as known for the conventional read-out with constant charge. The reference bias to which the circuit is controlled is also varied using feedback control, but with a slower response than the main bias control feedback loop. | 10-24-2013 |
20130285173 | ACOUSTIC TRANSDUCERS WITH PERFORATED MEMBRANES - A MEMS device, such as a microphone, uses a perforated plate. The plate comprises an array of holes across the plate area. The plate has an area formed as a grid of polygonal cells, wherein each cell comprises a line of material following a path around the polygon thereby defining an opening in the centre. In one aspect, the line of material forms a path along each side of the polygon which forms a track which extends at least once inwardly from the polygon perimeter towards the centre of the polygon and back outwardly to the polygon perimeter. This defines a meandering hexagon side wall, which functions as a local spring suspension. | 10-31-2013 |
20130328142 | INTEGRATED CIRCUIT WITH PRESSURE SENSOR AND MANUFACTURING METHOD - Disclosed is an integrated circuit ( | 12-12-2013 |
20130335168 | RF Device and Method for Tuning an RF Device - An RF device includes a substrate and a series circuit of a tunable RF component and a DC blocking capacitor. The series circuit is arranged on the substrate and couples an RF signal terminal to a fixed voltage terminal that is electrically isolated from the RF signal terminal. The tunable RF component is coupled to the RF signal terminal, the DC blocking capacitor is coupled to the fixed voltage terminal and a driver terminal is coupled to the tunable RF component. | 12-19-2013 |
20140160607 | ESD PROTECTION - An ESD protection circuit comprises a series connection of at least two protection components between a signal line to be protected and a return line (e.g. ground), comprising a first protection component connected to the signal line and a second protection component connected to the ground line. They are connected with opposite polarity so that when one conducts in forward direction the other conducts in reverse breakdown mode. A bias voltage source connects to the junction between the two protection components through a bias impedance. The use of the bias voltage enables the signal distortions resulting from the ESD protection circuit to be reduced. | 06-12-2014 |