462 results about "Inductive coupling" patented technology

The invention relates to an intelligent power distribution harmonic monitoring and dynamic compensation system which comprises a monitoring unit, a correction unit and a compensation unit. The monitoring unit continuously collects high-frequency harmonic voltage and current data in a distribution line at a high sampling frequency, extracts transient harmonic components through wavelet packet transformation and empirical mode decomposition, and generates low-dimensional feature vectors based on sparse representation. And the correction unit decodes the low-dimensional feature vector, recovers harmonic time-frequency features, calculates a phase drift rate, predicts a harmonic propagation path and an accumulation node by combining real-time power distribution network topology construction and adopting a nonlinear dynamic prediction model, and generates a correction instruction when abnormality is detected. And the compensation unit adopts pulse sequence density modulation to dynamically adjust a compensation current phase according to the correction instruction, and meanwhile, an inductive coupling device is utilized to transfer harmonic energy to a low-risk node, so that harmonic voltage distortion of a target node is quickly recovered to a stable level in a fundamental wave period after early warning.

An RFID tag including an inlay that is thin and easy to manufacture. The above problem is solved by an RFID tag including an inlay in which an IC chip and an antenna are provided on a base material having a main surface, wherein the antenna includes a loop conductive portion having both end portions connected to the IC chip so as to form a loop shape through the IC chip, and a dipole antenna portion disposed to surround the loop conductive portion with an interval allowing inductive coupling, and the loop conductive portion and the dipole antenna portion are formed on the main surface to have same thickness based on the main surface, and the IC chip is disposed on both end portions of the loop conductive portion.

The invention discloses a radio frequency plasma comprehensive testing device and method for an ion process system, and relates to the technical field of plasma testing, and the device comprises a host and a coupling probe; the coupling probe is placed on a radio frequency transmission line of an ion process system, is used for carrying out coupling sampling on radio frequency energy through a capacitance or inductance coupling mode according to an electromagnetic field coupling principle, obtains current and voltage signals through coupling, and is also used for sensing and obtaining real-time temperature data in the probe; the host comprises a main body shell and a shielding frame arranged in the main body shell, and a data processing and analyzing unit is arranged in the shielding frame and used for performing data processing on the received voltage, current and temperature signals; the radio frequency power supply power, the radio frequency power supply frequency spectrum, the impedance of the matcher and the vacuum reaction cavity and other ion process system parameter values are calculated and generated, and meanwhile clutter capture and radio frequency transmission harmonic wave test results in radio frequency transmission are output, so that the comprehensive test of the ion process system is realized.

In various embodiments of the invention, a cooled nuclear magnetic resonance (NMR) probe can utilize a sliding band capacitor which can be moved relative to a parent coil inner conductance tapered skirt to adjust the frequency of the parent coil to allow the parent coil to detect the resonance of at least two nuclei without requiring leads between the parent coil and a lock coil. In this manner a cooled NMR probe can be provided without the disadvantages of prior art cooled NMR probes. In an embodiment of the invention, the sliding band capacitor comprises a diamagnetic insulator with a first volume magnetic susceptibility, at least one paramagnetic metal with a second volume magnetic susceptibility and at least one diamagnetic metal with a third volume magnetic susceptibility, where the sum of the first volume magnetic susceptibility, the second volume magnetic susceptibility and the third volume magnetic susceptibility is approximately zero.

Systems and methods for capacitance tuning of devices in quantum processors are described. One implementation is a quantum processor with a first current path having a first loop, a Josephson structure with at least one Josephson junction interrupting the first loop, a second current path connected to the first current path, and a flux bias. The second current path has a first node spaced from a second node, a capacitor separating the first node and the second node, and a voltage gain tuner, the voltage gain tuner being inductively coupled to the inductance of the first current path. The flux bias is coupled to the voltage gain tuner and controls the voltage gain tuner to vary a voltage ratio between the first node and the second node, thereby influencing the capacitance of the first current path.

A superconducting quantum processor unit for quantum computing is provided. The processor unit is formed from the union of a qubit chip and a wiring chip with superconducting bonding bumps and spacers. The bumps may be densely distributed around active elements between the two chips and effectively form a Faraday-Cage around the qubits, control signal waveguides etc. The qubit chip has strategically spaced qubits and an inductively coupled probe line and the wiring chip has a bus coupling resonator with a number of voltage nodes and anti-nodes, a resonator pump and at least one SQUID. Magnetic flux applied through the SQUIDs changes their impedances and modifies the microwave boundary conditions of the bus. This allows in-situ shifting of electric field distributions of the resonance modes of the bus along the length of the bus. This tunes the coupling rates of the bus to all qubits simultaneously.

A circuit includes a transformer including a primary coil and a secondary coil, the primary coil and the secondary coil being inductively coupled to one another. The circuit further includes an excitation driver circuit having a driver input and a driver output. The driver output is coupled to the primary coil and a clock circuit having a clock output is coupled to the driver input. Furthermore, the circuit includes a clock detection circuit having a detection input and a detection output, wherein the detection input is coupled to the secondary coil and a data interface circuit having a clock input, a data input and an interface output, the clock input coupled to the detection output. In addition, the circuit includes a load circuit coupled between the interface output and the secondary coil, the load circuit including a modulation input coupled to the interface output.

The invention discloses a low-power-consumption radiation-resistant quadrature voltage-controlled oscillator based on an SOI (Silicon On Insulator) process, relates to the technical field of quadrature voltage-controlled oscillators, and is used for solving the technical problems that an existing quadrature voltage-controlled oscillator is low in radiation resistance in a harsh radiation environment and does not have the characteristic of low power consumption. The invention discloses a low-power-consumption anti-radiation quadrature voltage-controlled oscillator based on an SOI process. The low-power-consumption anti-radiation quadrature voltage-controlled oscillator comprises a first voltage-controlled oscillator, a second voltage-controlled oscillator, a first tail filter and a second tail filter, the first voltage-controlled oscillator and the second voltage-controlled oscillator respectively form an LC resonant cavity with a parasitic capacitor of an inductor and a varactor through the inductor; the first tail filter is connected with the first voltage-controlled oscillator, and the second tail filter is connected with the second voltage-controlled oscillator; two inductors of the first tail filter and the second tail filter are coupled; lC resonant cavities of the first voltage-controlled oscillator and the second voltage-controlled oscillator output oscillation waveforms, and negative impedance is formed through configured transistor pairs, so that the waveforms are output constantly.

Secondary sub-circuit (6) for the electrical power supply of an electrical energy storage unit (2), this sub-circuit (6) being capable of contactless exchange by inductive coupling of electrical energy with a primary sub-circuit (4) capable of being connected to a voltage network (5), and this sub-circuit (6) also being capable of being connected to an electrical energy storage unit (2), the secondary sub-circuit (6) comprising: - a secondary inductive cell (20) for contactless exchange by inductive coupling of electrical energy with the primary sub-circuit (4), - an inverter / rectifier (23) capable of performing an impedance adaptation of the impedance on the alternating input of this inverter / rectifier (23), independently of the impedance of the electrical energy storage unit (2),this inverter / rectifier (23) comprising at least two switching arms (24) namely: - a first switching arm switching at the frequency of the electrical energy induced in the secondary inductive cell (20) and, - a second switching arm (24) switching at a frequency higher than that of said electrical energy and with a duty cycle modulated according to the alternating current flowing in the secondary inductive cell (20) and the voltage on the alternating input of this inverter / rectifier (23), the second switching arm comprising two switching cells (12) arranged on either side of a midpoint (25) of this second switching arm, at least one of these switching cells (12) comprising at least two controllable electronic switches (29) arranged in parallel. Abstract figure: Fig.1,

Certain aspects of the present disclosure provide techniques for pre-distortion training feedback via inductive coupling. An example apparatus includes a receive path; a transmit path comprising an amplifier having a first output that is inductively coupled to the receive path; a memory; and a processor coupled to the memory. The processor is configured to cause the apparatus to obtain a first signal, based on a second signal output by the amplifier, via the receive path being inductively coupled to the first output of the amplifier; determine a parameter for pre-distortion associated with the amplifier based at least in part on the first signal; pre-distort a third signal based at least in part on the parameter; amplify the pre-distorted third signal via the amplifier; and transmit the amplified third signal.

A low-noise amplifier (LNA) includes a first transistor, a second transistor, and a load coupled to a drain of the first transistor and a drain of the second transistor. The LNA also includes a first reactive impedance matching network including a first inductor and a second inductor inductively coupled with the first inductor, wherein the first inductor is coupled to a source of the first transistor, and the second inductor is coupled to a gate of the first transistor. The LNA also includes a second reactive impedance matching network including a third inductor and a fourth inductor inductively coupled with the third inductor, wherein the third inductor is coupled to a source of the second transistor, and the fourth inductor is coupled to a gate of the second transistor. The LNA also includes a switching circuit configured to enable or disable each of the reactive impedance matching networks.

A power converter, power converter controller, and method of controlling a power converter are described. The power converter includes: a half bridge or full bridge switch network; an LLC resonant tank electrically coupled to the switch network; a rectifier circuit electrically coupled to a filter capacitor configured to provide a DC output voltage; a transformer inductively coupling the rectifier circuit to the LLC resonant tank; and a controller configured to determine a reference voltage to which the DC output voltage is regulated, and adjust a switching frequency of the switch network based on a difference between the DC output voltage and the reference voltage. The controller is configured to determine the reference voltage based on input voltage and / or output current feedback for the power converter and / or determine a variable switching frequency or a variable switching period for the switch network based on input voltage magnitude and output current magnitude.

An isolation circuit arrangement may include an isolation barrier and may be configured to receive one or more input signals on a low voltage side and deliver one or more output signals on a high voltage side. The isolation barrier may include a first capacitor, arranged along a first input line, a second capacitor arranged along a second input line, electrically parallel to the first capacitor, and a first inductor having a first end that is coupled to a first electrode of the first capacitor and having a second end that is coupled to a first electrode of the second capacitor. The isolation barrier may further include a center tap, connected to the first inductor, and a second inductor that is inductively coupled to the first inductor and is arranged with a first output end and a second output end on a high voltage side of the isolation circuit arrangement.

The invention discloses a non-intrusive sensor with an external excitation source and a voltage measurement method, and the non-intrusive sensor comprises an induction signal collection unit, an induction signal conditioning unit, and a main control unit. The main control unit is respectively connected with the induction signal conditioning unit and the cable power supply, the induction signal conditioning unit is connected with the induction signal acquisition unit, and the induction signal acquisition unit is in non-contact inductive coupling connection with a cable to be detected; the main control unit is used for injecting the specific excitation signal into an alternating current loop of a cable power supply to form a composite signal, analyzing the composite signal based on a preset excitation source amplitude parameter, and calculating the power supply voltage of the to-be-detected cable; the induction signal acquisition unit generates a corresponding induction signal by capturing electric field energy generated by a composite signal in the to-be-detected cable; the induction signal conditioning unit carries out standardization processing on the induction signal. According to the invention, the technical problems of low external excitation voltage measurement precision, low system integration and single excitation source generation mode in the prior art are solved.

The invention discloses an on-chip active reconfigurable filter passband flatness optimization method and circuit, and belongs to the field of integrated circuits and wireless communication. The filter comprises a coupling element, negative resistance compensation units are connected to the two ends of the coupling element and connected with the coupling element in parallel, and the coupling element comprises a coupling inductor or a coupling capacitor. The invention provides a passband flatness method based on active coupling compensation by deeply analyzing the passband flatness distortion reason of the on-chip coupling filter, and designs a detailed controllable negative resistance unit to compensate the coupling (inductive coupling) loss of the base transformer, thereby greatly reducing the in-band insertion loss variation of the filter, and improving the filter performance. And the amplitude consistency of the signal after passing through the filter is improved.

The invention discloses a defect coupling low-noise amplifier. The low-noise amplifier solves the problem that the performance of a low-noise amplifier in the prior art is influenced by a grid source inductance coupling coefficient. Forward coupling of an input inductor and a grid inductor and reverse coupling of the input inductor and a source inductor are achieved through a unique defect coupling transformer matching network, meanwhile, reverse coupling of a grid inductor and the source inductor is achieved, and the coupling coefficient of the grid-source inductor is reduced through coupling counteracting inductance; by combining a differential common-source transconductance amplification stage, a four-order magnetic coupling resonance unit, a differential transconductance amplification stage with a neutralizing capacitor and an output transformer matching network, the characteristics of high gain bandwidth and low noise are realized; simulation and actual tests verify that the low-noise amplifier can effectively reduce the noise coefficient and broaden the input matching range, has good compatibility and wide application prospects based on a conventional integrated circuit production process, can be applied to a phased array system, and can also form a receiver system with other circuits.

The invention relates to the technical field of plasma sources, in particular to a self-shielding inductively coupled plasma radio frequency electrode and plasma processing equipment. The device at least comprises a spiral inductance coil, a middle shielding electrode and a grounding capacitor, wherein the spiral inductance coil is used for transmitting radio frequency energy to a plasma excitation area in an inductive coupling mode; the middle shielding electrode is connected to the middle coil part of the spiral inductance coil and used for shielding high-voltage areas at the upper end and the lower end of the spiral inductance coil; the grounding capacitor is used for adjusting the voltage in the middle of the spiral inductance coil, so that the voltage amplitude of the position where the middle shielding electrode is located is reduced to the lowest point, and the self-shielding effect is achieved. According to the invention, the electric field of a high-voltage area of the coil is effectively shielded, the capacitive coupling effect is obviously reduced, the problems of particle pollution, shortened equipment life, ion damage and the like of a traditional plasma source in a wafer processing process are solved, and the system stability and the process reliability are improved.

The invention relates to a cross-inductor voltage regulator (TLVR) inductor module and a power electronic assembly including the TLVR inductor module. A cross-inductor voltage regulator (TLVR) inductor module includes: a magnetic core; a first winding embedded in the magnetic core; a second winding embedded in the magnetic core and inductively coupled to the first winding; a third winding embedded in the magnetic core; a fourth winding embedded in the magnetic core and inductively coupled to the third winding; and a first integrated metal connector connecting the second winding and the fourth winding in the series loop. A power electronic assembly including the TLVR inductor module is also described.

The invention relates to the technical field of micro display, and discloses a display panel and a preparation method thereof.The display panel comprises pixel units arranged in an array, each pixel unit comprises a driving circuit layer arranged on one side of a substrate, and each driving circuit layer comprises multiple metal wire layers and interlayer dielectric layers arranged between the adjacent metal wire layers; the display panel comprises an isolation structure arranged between any two adjacent pixel units, and the lower end of the isolation structure extends to be flush with the bottom face of any metal wire layer or any interlayer dielectric layer in the direction perpendicular to the substrate or extends into the substrate. The isolation structure comprises a bottom insulating layer and side wall insulating layers arranged on the side walls of any two adjacent driving circuit layers. The isolation grooves are formed between the pixels and are filled with materials such as gas, low-dielectric-constant media or metal, so that capacitive coupling, leakage current and inductive coupling between the pixels are reduced, and the problems of contrast reduction, color distortion, inaccurate gray scale and the like caused by crosstalk are solved.

Method for operating a device (100) for wirelessly transmitting energy towards an electrical load (200) by means of inductive coupling, wherein the device (100) comprises: - a rectifier (108) for generating a DC voltage (US) from a mains AC voltage (UN), - an inverter (102) supplied by the DC voltage (US) configured to generate a pulse-width modulated control signal (AS), and - a power coil (101) controlled by the pulse-width modulated control signal (AS), by means of which an alternating magnetic field can be generated for transmitting the energy during predetermined transmission cycles, - wherein the method comprises the following steps for predetermined operating conditions: - determining, for a plurality of time points during a respective transmission cycle,which energy has been transferred from the device (100) towards the electrical consumer (200) up to the corresponding time during the respective transmission cycle, - comparison of the transferred energy with a maximum value and - if the transferred energy is equal to or greater than the maximum value, switching off the pulse width modulated control signal (AS) for the remaining part of the transmission cycle.

Kitchen appliance (100), comprising: - an inductor (1) comprising ferrite elements (5) and a winding (2) and by means of which an alternating magnetic field can be generated for heating a cooking vessel (200) in a first operating mode of the kitchen appliance (100) and by means of which an alternating magnetic field can be generated for transmitting energy towards an electrical consumer (300) by means of inductive coupling in a second operating mode of the kitchen appliance (100), - a cooking plate (19) with a support surface (12) on which the cooking vessel (200) to be heated or the electrical consumer (300) is to be placed as intended, and - an electrically conductive, in particular metallic, carrier (3) on which the inductor (1) is arranged, - wherein a distance (4) between a side of the winding (2) facing the electrically conductive carrier (3) and a side of the electrically conductive carrier (3) facing the winding (2) is at least 6 mm, - wherein a distance (13) between a side of the winding (2) facing the mounting surface (12) and the mounting surface (12) is a maximum of 9 mm, in particular a maximum of 7.5 mm, - wherein the distance (4) between the side of the winding (2) facing the electrically conductive carrier (3) and the side of the electrically conductive carrier (3) facing the winding (2) is greater than a height (7) of the ferrite elements (5), and - wherein a distance (8) between a side of the ferrite elements (5) facing the electrically conductive carrier (3) and a side of the electrically conductive carrier (3) facing the ferrite elements (5) is at least 2 mm.

The disclosed embodiments relate to method and / or device which is effective at cancelling or altering electrical signals or pulses, generated by, for example, digital electronic systems and components, that are induced, reflected or otherwise made present on the mains power supply conductors and / or the earthing or grounding conductor (if present.) The disclosed embodiments cancel these electrical signals thereby providing an effective means of preventing the exfiltration of various data from a computing or similar system by means of power line emissions. The disclosed embodiments may perform this subjugation by: altering the shape of the fundamental current and voltage waveforms and also altering and diminishing any non-fundamental frequency waveforms to a point where they are no longer measurable or detectable; and preventing the communication via inductive coupling of any electrical signals on mains current onto the grounding path or vice versa.

The application relates to the communication technical field, and provides a filter and a coupling polarity adjusting method.The filter comprises a first component, a second component, a first resonator, a second resonator and a coupling piece, the first resonator and the second resonator are located in a first resonant cavity and a second resonant cavity formed between the first component and the second component; one end of the coupling piece is located in the first resonant cavity and connected to the first resonator or the first component to form a short-circuit end, and the other end of the coupling piece is suspended in the second resonant cavity and located on one side of the second resonator to form an open-circuit end; and the coupling piece is used for capacitive coupling or inductive coupling between the first resonator and the second resonator.The filter provided by the application can realize capacitive coupling or inductive coupling between the first resonator and the second resonator by setting the coupling piece with the same structure and only setting different lengths, and the structure can be effectively simplified.

The application provides a transient ground potential rise induced coupling determination method through cable shielding layer, and belongs to the technical field of cable shielding layer.The application establishes a distributed parameter partial element equivalent circuit model of a grounding network, solves transient ground potential distribution by using a finite difference time domain method, obtains equivalent transfer impedance frequency characteristics of a braided shielding layer by using a four-port S parameter vector network analysis method and a variational asymptotic homogenization multi-scale algorithm, solves core line common mode voltage and differential mode voltage by establishing a multi-conductor transmission line equation group, constructs an artificial intelligence prediction model based on a topology perception graph neural network, solves a large-scale sparse admittance matrix by using a multilevel fast multipole method to obtain full network induced voltage distribution, and establishes a quantitative relationship model between ground potential rise and core line induced voltage, so that the technical problems that cable core line induced voltage caused by transient ground potential rise is difficult to accurately predict and effectively suppress are solved.

This utility model discloses a circuit for preventing a 6kV vacuum contactor switch from erroneously closing automatically, relating to the field of safety protection technology for high-voltage electrical control equipment. It includes a main control circuit and a suppression circuit, both electrically connected to a control power supply and connected in parallel. The main control circuit includes an inductor L1 and a time relay KT1, both electrically connected to the control power supply and connected in parallel, and both connected in parallel with the suppression circuit. This utility model uses auxiliary contacts CH1 / CH3 to monitor the voltage status in real time, achieving millisecond-level rapid disconnection. Simultaneously, the time relay KT1 ensures complete release of electromagnetic energy, and capacitors C1 / C2 specifically absorb the energy coupled from the cable's distributed capacitance and inductance, thus constructing a triple protection system of electrical detection, timing control, and energy absorption.

The invention relates to a band-pass filter structure and a design method, the band-pass filter structure comprises two SIW resonators which are distributed in a bilateral symmetry manner, adjacent surfaces of the two SIW resonators form a common wall, a second metal layer at least comprises a strip line resonator and a stepped strip line with two short-circuited ends, the two SIW resonators and the strip line resonator adopt a coplanar waveguide feed structure, and the two SIW resonators and the stepped strip line resonator are connected in parallel. The two SIW resonators are electrically coupled with the stepped strip line of which the two ends are short-circuited, and an inductive coupling window is arranged on a common wall to form magnetic coupling; the stripline resonator comprises a U-shaped half-wavelength stripline resonator with two short-circuited ends, an L-shaped quarter-wavelength stripline resonator or a combination of the U-shaped half-wavelength stripline resonator with two short-circuited ends and a full-wavelength stripline resonator. The number of transmission zero points is large and the positions are controllable through hybrid electromagnetic coupling, the order design of the filter is realized through the shape and the number of the combined strip line resonators, and the filter has the advantages of high selectivity and compact structure.

The application provides a harmonic suppression circuit of an inductive coupling energy transmission system, which places an auxiliary receiving circuit with a resonance frequency of 3 times, 5 times, 7 times or 2n+1 (n=1, 2, 3…) times of a fundamental frequency on a secondary side, configures a corresponding voltage stabilizing circuit on a direct current voltage output side of the auxiliary receiving circuit, and realizes a self-power supply function of a power utilization device such as a control circuit on the secondary side, and a quality factor Q of the auxiliary receiving circuit is i The harmonic suppression method is simple, does not affect power transmission of a main circuit, and can improve the efficiency of the inductive coupling energy transmission system.

Systems and methods for coupling quantum modes using a linear inductive coupler are provided. The linear inductive coupler includes an inductor and two Josephson junctions having approximately equal Josephson energies, each coupled in parallel with the inductor. During operation, the linear inductive coupler is biased by a magnetic flux approximately equal to Φ0 / 2 such that a phase drop across each of the two Josephson junctions is approximately equal to π / 2. Driving the linear inductive coupler thereafter using at least one electromagnetic signal enables coupling between two quantum modes.

Proposed is a method for distinguishing a container body seated on a main body of a blender, and the blender. The blender according to the present disclosure has arranged at the lower part of the container body a light source module for transmitting a light signal, and has arranged at the upper part of the main body a light reception module for receiving the light signal such that, when the container body is seated on the main body, power is supplied to the light source module via inductive coupling of a first induction coil arranged on the main body and a second induction coil arranged on the container body, the light source module transmits the light signal corresponding to the container body, the light reception module receives the light signal, and the container body on the main body can thereby be distinguished.

Systems, circuits, and methods provide for detection of open-circuit states in an external conductor using inductive coupling. An on-chip coil is used to generate a reference magnetic field. An in-package conductor loop is connected to the external conductor. When the external conductor is continuous, the reference magnetic field generates an induced current in the in-package conductor whereas no induced current is generated when the external conductor is broken. The presence of an induced current produces an induced magnetic field, tending to cancel the reference magnetic field. The cancellation or attenuation of the reference magnetic field can be detected by an included magnetic field sensor and a comparator. Examples can include use of a closed loop acting as a feedback loop. The feedback loop can adjust the strength of a feedback magnetic field directed at the magnetic field sensor and used to compensate for nonlinearities of the magnetic field sensor.