摘要:
Disclosed is an integrated circuit (100) comprising a cavity (52) defined over a substrate (10) and a membrane (42, 50) arranged to be exposed to infrared radiation suspended over said cavity, said membrane comprising a conductive body (42) and an infrared radiation absorbing polymer (50) covering said conductive body such that the conductive body is shielded from said radiation by said polymer, said conductive body being conductively coupled to a pair of electrodes. A body detection system including such an IC and a method of manufacturing such an IC are also disclosed.
摘要:
A variety of circuits, methods and devices are implemented for radiofrequency amplifiers. According to one such implementation, a radiofrequency amplifier circuit is implemented in a SMD package. The circuit amplifies a radiofrequency signal having a base-band portion and a plurality of carrier signals frequency-spaced larger than the base-band bandwidth. The circuit includes a radiofrequency transistor connected to a circuit output having a parasitic output capacitance. The source-drain terminal is electrically connected to the circuit output. An internal shunt inductor provides compensation for the parasitic output capacitance. A high-density capacitor is connected between the internal shunt inductor and a circuit ground. The high-density capacitor has a terminal with a surface area can be at least ten times that of a corresponding planar surface.
摘要:
A MEMS capacitive pressure sensor has a deformable sensor electrode with a length to width ratio of 3 or more. This enables the flexibility to be kept low, so that the pressure range of operation is increased, while also enabling an increased area to give an increased signal.
摘要:
Disclosed is an integrated circuit (100), comprising a semiconductor substrate (110) carrying a plurality of circuit elements; and a pressure sensor including a cavity (140) on said semiconductor substrate, said cavity comprising a pair of electrodes (120, 122) laterally separated from each other; and a flexible membrane (130) over and spatially separated from said electrodes such that said membrane interferes with a fringe field between said electrodes, said membrane comprising at least one aperture (132). A method of manufacturing such an IC is also disclosed.
摘要:
The sensor has at least two membranes of which one membrane is sealed and one other membrane has an opening to ambient pressure, and functions as a reference device. The sealed membrane deflects as function of pressure whereas the deflection of the "open" membrane remains unaltered. The reference device enables determination of relevant calibration parameters such as capacitance offset, dC/dP, parasitic capacitance, membrane stiffness, back side pressure. This then enables an accurate capacitance pressure function to be obtained with only two calibration points and without needing to control pressure levels.
摘要:
A variety of circuits, methods and devices are implemented for radiofrequency amplifiers. According to one such implementation, a radiofrequency amplifier circuit is implemented in a SMD package. The circuit amplifies a radiofrequency signal having a base-band portion and a plurality of carrier signals frequency-spaced larger than the base-band bandwidth. The circuit includes a radiofrequency transistor connected to a circuit output having a parasitic output capacitance. The source-drain terminal is electrically connected to the circuit output. An internal shunt inductor provides compensation for the parasitic output capacitance. A high-density capacitor is connected between the internal shunt inductor and a circuit ground. The high-density capacitor has a terminal with a surface area can be at least ten times that of a corresponding planar surface.
摘要:
The invention relates to a token (100), to an integrated circuit (200) comprising the token, to a method of randomizing the token and a system (500, 502) for randomizing the token. The token comprises a physical unclonable function (10, 12, 14, 16, 18) and comprising probing means (110) for probing the physical unclonable function. The physical unclonable function comprises a capacitor (20, 22) comprising a dielectric medium (30, 32) being arranged at least partially between the electrodes (20A, 20C; 22A, 22C) of the capacitor. The dielectric medium is configured for contributing to a capacitance value of the capacitor and comprises conducting particles (40, 42; 40A, 40B, 40C) substantially randomly dispersed in the dielectric medium. The conducting particles comprise a phase changeable material being changeable between a first structural state (40A, 40C) having a first conductivity and a second structural state (40B) having a second conductivity different from the first conductivity.
摘要:
A differential pressure sensor comprises a cavity having a base including a base electrode and a membrane suspended above the base which includes a membrane electrode, wherein the first membrane is sealed with the cavity defined beneath the first membrane. A first pressure input port is coupled to the space above the sealed first membrane. A capacitive read out system is used to measure the capacitance between the base electrode and membrane electrode. An interconnecting channel is between the cavity and a second pressure input port, so that the sensor is responsive to the differential pressure applied to opposite sides of the membrane by the two input ports.
摘要:
a gaming system has a pressure measurement in the remote control (which may be the complete gaming apparatus) and this is used to derive a height of the remote control. In this way, barometric pressure measurement allows precise determination of the altitude of the game controller. The altitude information is then used to control the game.
摘要:
A pressure sensor measures pressure by measuring the deflection of a MEMS membrane using a capacitive read-out method. There are two ways to implement the invention. One involves the use of an integrated Pirani sensor and the other involves the use of an integrated resonator, to function as a reference pressure sensor, for measuring an internal cavity pressure.