667results about How to "Reduce dissipation" patented technology

It is possible to facilitate design and reduce a size and power dissipation of a radio frequency integrated circuit RFIC for full duplex system, by forming a duplexer for passing only a desired band, a low noise amplifier circuit LNA for amplifying an output signal of the duplexer, and a BPF for passing only a desired band in an output signal of the LNA in the same module and preventing a leak level of a transmission signal to a receiver side from affecting the design of the RFIC.

A detecting device for biochemical detections is provided. The detecting device includes a first substrate, a magnetic layer located on the first substrate, an isolation layer located on the magnetic layer, at least a first electrode located on the isolation layer, a first dielectric layer located on the first electrode, a first hydrophobic layer located on the first dielectric layer, a second substrate, at least a second electrode located on the second substrate and having a cathode and an anode, a second dielectric layer located on the second electrode and a second hydrophobic layer located on the second dielectric layer. The first electrode is zigzag-shaped, and the cathode and the anode of the second electrode are comb-shaped and interlaced with each other.

An optical device (300) comprises a multilayer structure, formed by wafer bonding, incorporating in sequence a silicon dioxide layer (304), a buried silicide layer (306), a contact layer (308) and a silicon surface layer (310). The surface layer (310) is selectively etched to form an exposed rib (312). An upper surface of the rib (312) is doped to form an elongate electrode (314) therealong. The surface layer (310) is selectively etched to the contact layer (308) in regions remote from the rib (312) to form via channels (316a, 316b) for making electrical connection to the contact layer (308). The rib (312) forms a waveguide along which radiation propagates. When the electrode (314) is biased relative to the contact layer (308), charge carriers are injected into the rib (312) and induce refractive index changes in a central region (324) thereof where most of the radiation propagates along the rib (312). The silicide layer (306) provides an efficient current conduction path for injecting the carriers, thereby providing enhanced device operating bandwidth and reduced power dissipation.

A screw type inerter mechanism includes a screw with a limit portion and a thread portion with threads; a screw cap engaged with the thread portion of the screw; an inertia body fixed to the limit portion of the screw; and a connection body engaged with the limit portion of the screw wherein an axial of the screw serves as a rotation axial for the screw to rotate relatively to the connection body. Thus, when a non-zero external force is applied to the inerter mechanism to generate relative horizontal displacement between the screw cap and the connection body, the screw cap brings the screw to rotate, which further brings the inertia body to rotate, thereby achieving the inerter features.

The method provides a new fluid simulation technique that significantly reduces the non-physical dissipation of velocity using particles and derivative information. In solving the conventional Navier-Stokes equations, the method replace the advection part with a particle simulation. When swapping between the grid-based and particle-based simulators, the physical quantities such as the level set and velocity must be converted. A novel dissipation-suppressing conversion procedure that utilizes the derivative information stored in the particles as well as in the grid points is developed. Through several experiments, the proposed technique can reproduce the detailed movements of high-Reynolds-number fluids, such as droplets/bubbles, thin water sheets, and whirlpools. The increased accuracy in the advection, which forms the basis of the proposed technique, can also be used to produce better results in larger scale fluid simulations.

A packaged electronic device includes a leadframe including a die pad, a first, second, and third lead pin surrounding the die pad. An IC die is assembled in a face-up configuration on the lead frame. The IC die includes a substrate having an active top surface and a bottom surface, wherein the top surface includes integrated circuitry including an input pad, an output pad, a power supply pad, and a ground pad, and a plurality of through-substrate vias (TSVs) including an electrically conductive filler material and a dielectric liner. The TSVs couple the input pad to the first lead pin, the output pad to the second lead pin, the power supply pad to a third lead pin or a portion of the die pad. A fourth TSV couples pads coupled to the ground node to the die pad or a portion of the die pad for a split die pad.

A hash-CAM (H-CAM) which may work with a controller and a memory containing a database of either search values and associate content or associate content by itself The H-CAM includes at least one set of paired hash units and CAM units and at least one logic unit. The CAM units hold values known to cause hash collisions in the respectively paired hash units, and the logic unit prioritizes the hash and CAM unit outputs to a single address value usable to access the memory and obtain a search result at the controller that is not the result of a hash collision. The H-CAM may optionally include a search data storage to store the search values, so that they need not be stored in the memory, and a comparator to determine and handle newly determined hash collisions.

The invention relates to a mono-dual frequency electromagnetic flowmeter excitation control system based on linear power supply, comprising a constant current source circuit, a current bypass circuit,an exciting coil driving circuit, an excitation time sequence generating circuit and a galvo circuit. A high voltage power supply is adopted for supplying power, the constant current source is constructed by linear power supply to supplying electricity for the exciting coil driving circuit, the current bypass circuit is jointed in parallel with the input/output end of the linear power supply to solve the problem of energy dissipation, the exciting coil driving circuit is composed of an H bridge and a control circuit thereof, the galvo circuit is bridge-jointed between the lower end of the H bridge and a reference ground, and a digital signal processor (DSP) is used for controlling multiple switches and an electrical level matching device to generate time sequence and control the action ofthe exciting coil driving circuit. The excitation control system can obviously improve excitation frequency range and excitation frequency preciseness, is suitable for single frequency high frequencysquare wave excitation or dual frequency square wave excitation, and can simultaneously provide more exact current detection to correct the flow signal processing result.

A flip-flop circuit having low power consumption includes a sensing circuit, and a clock generating circuit. The flip-flop is leading edge triggered and operates on an internally generated pseudo clock signal. The sensing circuit senses a change in an input signal and an output signal of the flip-flop. The clock generating circuit generates a pseudo clock signal with a sharp rise and fall based upon an external clock signal.

A battery charger controller is coupled to DC output terminals of an AC-DC (or DC-DC) adapter containing an AC-DC (or DC-DC) converter. A controlled current flow path between input and output terminals of the battery charger controller circuit is controlled to provide a substantially constant current to charge the battery to a nominal battery voltage. When a constant voltage output of the said adapter transitions to a value that limits available charging current to a value less than programmed constant charging current, current flow drive for the controlled current flow path is increased for a limited time interval. Thereafter, the controlled current flow path gradually reduces charging current as the battery voltage remains at its nominal battery voltage until the charge is complete or otherwise terminated.

The invention discloses a cross-critical carbon dioxide energy storage system and method based on utilization of LNG cold energy utilization. The system comprises a carbon dioxide circulation loop; the carbon dioxide circulating loop comprises a liquid carbon dioxide gas storage tank, a first heat exchanger, a second heat exchanger, a compression unit, a supercritical carbon dioxide storage tank and an expansion unit; the outlet of the liquid carbon dioxide storage tank is connected with the inlet of the supercritical carbon dioxide storage tank through the evaporation side of the first heat exchanger and the compression unit; the outlet of the supercritical carbon dioxide storage tank is connected with the inlet of the liquid carbon dioxide air storage tank sequentially through the expansion unit, the condensation side of the first heat exchanger and the condensation side of the second heat exchanger; the evaporation side inlet of the second heat exchanger is connected with an LNG storage tank, and the outlet of the second heat exchanger is connected with the user end to form an LNG utilization loop; and the liquefied carbon dioxide flowing out from the condensing side of the first heat exchanger is further condensed through LNG as a cold source; the compression unit is connected with a motor driven by an off-peak electric motor for energy storage; and the expansion unit is connected with a user through a power generator to carry out energy release.

Embodiments of the present invention provide an improved ESD protection circuit within a power over Ethernet (PoE) network device operable to handle a network signal that may include both power and data. This PoE network device includes a network connector, an integrated circuit (IC) and an ESD protection circuit. The network connector physically couples the PoE network device to the network. The IC couples to the ESD protection circuit, wherein the IC further includes a power feed circuit. This power feed circuit is operable to handle network signals containing both data signals and power signals. The ESD protection circuits shunts ESD events to an ESD capacitance and then dissipates the ESD event through a discharge path in order to reduce the energy associated with the ESD event and dissipated within the IC.

The invention discloses a magnetic core structure and an electromagnetic coupling device based on the magnetic core structure. The magnetic core structure comprises an emitter coil magnetic core baseplate and a picking coil magnetic core baseplate, which are square and are parallel to each other during working, wherein a plurality of magnetic winding columns are arranged on the inner side surface of the emitter coil magnetic core baseplate and are uniformly distributed in a rectangular array, while winding slots taking the shape of a Chinese character 'hui' are formed in the inner side of the picking coil magnetic core baseplate. The magnetic core structure and the electromagnetic coupling device have the remarkable effects that the structure of the magnetic core is simple, the processing forming is convenient, the magnetic field concentration ability is strong, the radio energy transmission distance is increased, the wound coil can be selectively powered and controlled, the electrical energy transmission area is adjustable to adapt to position deflection of a picking mechanism, the energy dissipation is small and the transmission efficiency is high.

The invention relates to a multi-sending and multi-receiving acoustic measurement method for oceanic internal waves. According to the method, sound wave signals with frequency bands are sent through an internal wave measurement device, travel time of the sound wave signals with the frequency bands in the vertical direction in seawater is measured, after influences of a factor of background environmental is removed, echo time disturbance is obtained and combined with dynamics property of the internal waves, the relation between the echo time disturbance and the amplitude of the internal waves is built, so that change of crucial hydrology parameters such as temperature, salinity and flow rate of whole water depth caused by the internal waves is obtained, and therefore the purpose of observation on the oceanic internal waves is achieved. The multi-sending and multi-receiving acoustic measurement method for the oceanic internal waves can be widely used for the observation on the oceanic internal waves, particularly for the observation on internal waves in a deep sea.

An over-provisioned multicore processor employs more cores than can simultaneously run within the power envelope of the processor, enabling advanced processor control techniques for more efficient workload execution, despite significantly decreasing the duty cycle of the active cores so that on average a full core or more may not be operating.

The present invention discloses a dual-band RF transceiver. The transceiver comprises a first module, used as the RF front-end of the dual-band transceiver and used for receiving and transmitting a first RF signal and a second RF signal; a second module, electrically connected to the first module, used as the IF IQ modulator/demodulator of the dual-band RF transceiver; a third module, electrically connected to the first and the second modules, used as the tripe-band phase-locked frequency synthesizer of the dual-band RF transceiver and used for providing a first local oscillating signal and a second local oscillating signal to the first module, and a third local oscillating signal to the second module. The dual-band RF transceiver according to the present invention realizes the dual-band triple-mode operation of IEEE802.11 a/b/g by a single dual-band RF module, and therefore the circuit size, power dissipation, component count, and cost can be dramatically reduced.

The invention belongs to a device for solid-liquid separation/classification and non-homogeneous separation, specifically a hydraulic cyclone with improved structure of central post and overflow pipe. The device comprises a feed pipe, a cylindrical section, a coniform section, an overflow pipe and a hollow tubular central post with partial-spiral fins and spiral flow deflectors and provided outside the overflow pipe. The central post is a hollow tube provided thereon with a plurality of holes. The spiral flow deflectors are provided on the outer surface of the central post. The spiral fins are provided on the overflow pipe from the bottom of the overflow pipe to a height below the bottom of an inlet pipe. Compared with the prior art, the separation efficiency of the hydraulic cyclone is increased by 5-10% and the energy consumption is reduced by 20%. The hydraulic cyclone has high stability and reliability in separation efficiency and is suitable for solid-liquid separation in ore dressing, dredging, chemical and petroleum industries.