40 results about "Lc resonator" patented technology

This invention discloses a double-layer mutually inducted coupled planar eddy current detection sensor. First, an external excitation source provides AC power input to the detection coil layer, causing the LC resonator, composed of the detection coil and a parallel resonant capacitor, to resonate, generating a sinusoidal current and forming a primary magnetic field. When the test piece is in the primary magnetic field, eddy currents are generated on its surface, creating a mutual inductance effect with the sensing coil. Changes in lift-off or disturbances in the flow direction of eddy currents at defects lead to changes in the mutual inductance coefficient, causing a change in the equivalent inductance of the sensing coil and a change in the resonant frequency. Finally, the resonant frequency is detected and extracted to obtain the detection signal. Similarly, a set of detection signals is also extracted from the reference coil. By comparing the changes in the signals detected by the reference coil and the detection coil, lift-off and defect signals are separated to obtain defect information.

A multilayer bandpass filter includes an LC resonator inside a multilayer body of stacked dielectric layers. The LC resonator has a loop shape arranged such that a winding axis is perpendicular to a stacking direction of the multilayer body. The LC resonator includes a capacitor conductor pattern, a line conductor pattern and a GND conductor pattern connected by first and second interlayer connecting conductors extending in the stacking direction. A capacitance portion is formed where at least a part of the capacitor conductor pattern and at least a part of the GND conductor pattern face each other on different layers. A length of the first interlayer connecting conductor in the stacking direction defines a “via length” and a gap between the first and second interlayer connecting conductors defines a “line length.” The via length is longer than the line length.

The invention belongs to the technical field of micro-nano plasma switches and radio frequency and power circuits, and particularly relates to a frequency-adjustable high-power pulse signal generation circuit based on a micro-nano plasma switch, which comprises a sinusoidal signal generation module, a tuning module and a micro-nano plasma switch module, the sinusoidal signal generation module comprises an NMOS cross coupling pair, a PMOS cross coupling pair and an LC resonant cavity. The tuning module comprises a capacitor array and a frequency tuning module. A micro-nano plasma switch is used for realizing large-current transmission and is matched with a sine wave signal to generate a specific pulse signal. An inductor and a variable capacitor are introduced into the LC resonant cavity and the frequency tuning unit, and the capacitance value is adjusted by changing the end voltage of the capacitor, so that the circuit outputs a pulse signal of which the frequency covers a low frequency band to a terahertz frequency band under the control of different voltages. The pulse signal generated by the circuit has the characteristics of high power, picosecond-level rising edge and different repetition frequencies, and is suitable for terahertz communication, radar and other systems.

The present invention discloses a balise (100) being configured for transmitting a train control signal (102) to an onboard unit of a rail vehicle, comprising: - a control unit (116) being configured for receiving train control data and converting the train control data into the respective train control signal, - an electronic driver unit comprising an LC resonator (106) configured to transmit the train control signal via a transmitting coil of the LC resonator (116) to a vehicle antenna (104) aligned with the onboard unit of the rail vehicle; - a monitoring unit (112) comprising a signal generation circuit (a) configured for generating a test signal and further comprising a signal transmitting antenna (b) for transmitting the test signal (B(t)) thereby inducing a response signal (b(t)) in the transmitting coil of the LC resonator (106); - said monitoring unit (112) further comprising a receiving antenna (c) configured for receiving the response signal (b(t)), said response signal inducing an output signal in the receiving antenna (c); and - said monitoring unit (112) further comprising an evaluation unit (f) configured to evaluate the output signal with respect to its frequency and / or amplitude. Thus, the monitoring unit performs a frequency and quality supervision of the resonance of the LC resonator. This measure permits to send a feedback, optionally in addition of more information of the configuration and the orders received from the control unit that controls the balise, thereby enabling the emission of more restrictive orders in case of balise failures detected by the monitoring unit integrated into the balise, and in this way avoiding rail accidents.

The utility model discloses a dot matrix thermal therapy system, which is characterized in that a 12MHZ frequency signal is generated by a 12MHZ active crystal oscillator, a 6MHZ frequency signal is realized through a D trigger by buying two frequency divisions, the 6MHZ signal achieves an output peak 6MHZ envelope signal by controlling LC resonance, and the final peak value can reach 200V; and according to the real work gear, the 18-60V output adjustable intelligent power supply gives signals through the MCU to obtain voltages of different gears. Meanwhile, human body resistance detection is added to the system, and output energy can be adjusted according to a real-time human body resistance detection value. The heating device can deeply heat dermis and subcutaneous tissues in a deep, uniform and volumetric manner. By heating the sublayer of the skin, this heat results in the production of collagen, referred to as new collagen production. The new collagen enables the skin to look more compact, and improves the overall texture of the skin.

A wireless power system includes a magnetic resonance wireless power supply with a plurality of coupled LC resonators, each LC resonator being driven by a separate radio frequency (RF) generator. The system is modular, allowing the resonator to be added, removed, or repositioned. Each RF generator is configured to sense the phases of the other RF generators and adjust their phases to maintain a constant phase difference. Each RF generator includes a class E amplifier driven by an injection locked oscillator and a low pass filter that outputs a current sine wave. The RF generator senses the phase of the RF current of the other RF generators through the induced voltage and adjusts its phase based on a sum voltage derived from the voltage signal and the current signal. The system maintains frequency locking by adjusting a variable capacitor in the presence of environmental detuning.

The application discloses a kind of LC resonator automation manufacturing device, including cabinet, coil shaping assembly, work station component and control system;Wherein, the work station component includes winding work station component, stripping work station component, upper capacitor work station component, welding work station component, cutting head work station component and discharge work station component;The coil shaping assembly includes mounting base, shaping dynamic mould, shaping static mould and wire clamping structure;First driving structure for the wire clamping structure drive and second driving structure for the shaping dynamic mould drive are provided on the cabinet;A notch is provided on the mounting base.The method that six groups of coil shaping assemblies are arranged on a turntable, and work station components are arranged in adaptation with the six groups of coil shaping assemblies;Make that production efficiency is promoted, guarantee product performance consistency, reduce manufacturing cost, reliable in use, high in automation level, compact structure.

The application belongs to a high-sensitivity sensing circuit based on transmission valley degeneracy, a sensing method and a pressure sensor, and the sensing circuit comprises: a first LC resonator and a second LC resonator, the first LC resonator and the second LC resonator are weakly coupled with a transmission line with a predetermined characteristic impedance; a coupling element connected between the first LC resonator and the second LC resonator for realizing the coupling between the two resonators; and a signal extraction device for extracting the scattering parameter of the transmission line; wherein the first LC resonator and the second LC resonator are used to make the sensing circuit work at the transmission valley degeneracy point by adjusting the coupling element and the external coupling element, and when the coupling element is disturbed, the splitting of the spectral line valley in the reflection spectrum occurs. The application significantly improves the output signal-to-noise ratio and solves the contradiction between sensitivity and noise.

The application discloses a high-precision capacitive acceleration sensor based on a high-order non-Hermite circuit and belongs to the technical field of electronic sensors. The high-precision capacitive acceleration sensor comprises a capacitive accelerometer CO, a high-speed same-direction amplifier LM6171 and passive elements, the passive elements comprise a left LC resonator and a right LC resonator, the capacitive accelerometer is connected between the left LC resonator and the right LC resonator, the left LC resonator and the right LC resonator are respectively connected with a positive resistor R, a voltage source V g , a voltage source internal resistance Z0, a resistor R0 and a resistor R f containing an equivalent circuit of the high-speed same-direction amplifier LM6171 in parallel. The high-precision capacitive acceleration sensor based on the high-order non-Hermite circuit has the advantages of high sensing precision, strong structural stability, simple manufacturing process, low cost, good comprehensive performance, fast response, high sensitivity and suitability for actual use. Moreover, the non-Hermite circuit has the advantages of high efficiency, high flexibility, high degree of freedom, high adjustability, high circuit resonance frequency shift and high sensitivity.

A cascode amplifier with stability compensation network for removing instabilities of the amplifier due to cascode gate inductance is presented. The stability compensation network is a LC resonator with a resonance that targets a frequency of instability of the cascode amplifier. At the frequency of instability, the LC resonator is a short. The LC resonator is coupled in parallel to the gate inductance and a corresponding gate capacitance. According to one aspect, the gate inductance is a parasitic inductance. According to another aspect, the gate inductance further includes a gain boosting gate inductance. The gate boosting inductance provides a gain boost at a frequency of operation of the cascode amplifier. According to one aspect, values of an inductor and / or capacitor of the LC resonator are iteratively derived based on an optimization routine with criteria that includes a magnitude of a k- or μ-factor.

On-chip multi-band equalizers for adjusting signal strength for a receiver receiving multi-band frequency signals are provided. An example multi-band equalizer comprises multiple series connected tapped LC resonators. The tapped LC resonator may be capacitive tapping or inductive tapping, where both frequency and gain of the frequency bands of interest may be programmed by tuning the capacitances of the programmable capacitors and / or selecting the tapped-out terminals of the inductors. The multi-band equalizer may be connected to a signal node, for instance between two amplifiers in the receiver.

The invention designs an F-type voltage-controlled oscillator harmonic extraction device and method, and the device comprises an LC resonator, the LC resonator is coupled with a drain resonator of an F-type voltage-controlled oscillator, the resonant frequency of the LC resonator is three times of the fundamental frequency of the F-type voltage-controlled oscillator, and a third harmonic signal is extracted from a port of the LC resonator. The LC resonator used for third harmonic extraction is introduced to be coupled with the drain resonator in the F-type voltage-controlled oscillator, so that the phase noise performance of the F-type voltage-controlled oscillator is improved, the fundamental frequency suppression degree is higher, and the subsequent cascading requirement of a multi-stage band-pass amplifier is avoided.

A hybrid EM-LC resonator for a wireless power transfer (WPT) system includes a plurality of capacitive loops and LC circuits each having mutual inductance in a non-resonant mode of operation. The resonator is useful in a wireless energy transfer system. The system comprises a transmitter antenna assembly and a receiver antenna assembly, wherein each antenna assembly comprises at least two circuits isolated from each other. One way of isolating circuits is to place them at a pre-selected distance from each other, as shown below. It is required to sufficiently separate the circuits to allow for a relatively loose coupling between them.

This invention improves the characteristics of LC filters and suppresses their large size. One embodiment of the LC resonator (1A) includes a first planar electrode (102), a second planar electrode (103), a first line electrode (101), a first conducting conductor (111), a second conducting conductor (112), and a third planar electrode (104). The second planar electrode (103) is opposite to at least a portion of the first planar electrode (102) in a specific direction (Z). The first conducting conductor (111) and the second conducting conductor (112) extend from the first line electrode (101) along the specific direction (Z) and are connected to the first planar electrode (102) and the second planar electrode (103), respectively. The third planar electrode (104) is opposite to at least a portion of the second planar electrode (103) in a specific direction. The second planar electrode (103) is disposed between the first planar electrode (102) and the third planar electrode (104) in the specific direction (Z).

A multilayered filter device includes a first port, a second port, a first LC resonator electrically connected to the first port, a second LC resonator electrically connected to the second port, a third LC resonator provided between the first LC resonator and the second LC resonator in a circuit configuration, and a stack. The first LC resonator includes a first inductor. The second LC resonator includes a second inductor. The first inductor and the second inductor are configured to be magnetically coupled inside the stack.

A filter device includes a multilayer body including dielectric layers, and an LC resonator including an inductor and a capacitor to transmit a signal from an input terminal to an output terminal. The LC resonator includes plate electrodes on dielectric layers different from each other and connected by a via. The plate electrodes define and function as the inductor. The plate electrodes overlap at least partially in a direction of lamination of the multilayer body. Each of the plate electrodes includes an extending portion extending in an x axis direction, and an extending portion extending in a y axis direction. An area of the extending portion of one plate electrode is smaller than an area of the other extending portion.

The wireless power system includes a magnetic resonant wireless power supply with multiple coupled LC resonators, each driven by a separate radio frequency (RF) generator. The system is modular, allowing for the addition, removal, or rearrangement of resonators. Each RF generator is configured to sense the phase of other RF generators and adjust its own phase to maintain a constant phase difference. Each RF generator includes a Class E amplifier driven by an injection-synchronous oscillator and a low-pass filter that outputs a current sine wave. This RF generator senses the phase of the RF current of other RF generators via an induced voltage and adjusts its own phase based on the combined voltage derived from the voltage and current signals. The system maintains frequency synchronization even in the event of environmental disturbances by adjusting a variable capacitor.

This invention discloses a method and apparatus for evaluating the parasitic capacitance of an injection-locked circuit. The evaluation method includes: determining the device parameters of an LC resonator based on a target operating frequency range, and simulating the LC resonator with the device parameters applied to obtain a first simulation result; loading an injection structure at the first and second simulation interface terminals of the LC resonator to obtain a first circuit, simulating the first circuit to obtain a second simulation result, and adjusting the second simulation result based on the first simulation result to determine the first parasitic capacitance of the injection structure; loading a locking structure between the first and second simulation interface terminals of the first circuit to obtain a second circuit, simulating the second circuit to obtain a third simulation result, and adjusting the third simulation result based on the target operating frequency range to determine the second parasitic capacitance of the locking structure. Thus, this solution achieves accurate evaluation of the parasitic capacitance of the injection-locked circuit.

A quantum device having an LC resonator circuit for performing a qubit measurement or readout is disclosed. The device comprises a silicon layer (601), a dielectric layer (603) disposed on the silicon layer (601) and forming a functional interface with the silicon layer (601), a first metal region (614) disposed on the dielectric layer 603, and a second metal region 624 disposed on the dielectric layer 603 and laterally separated from the first metal region (614). The first and second metal regions (614, 624) are arranged to be electrically connected such that a double quantum dot having a first state and a second state of a qubit can be induced to form at the functional interface under the first and second metal regions (614, 624). The double quantum dot provides a capacitor Cl in the LC resonator circuit, the capacitance of the double quantum dot depending on the state of the qubit. The first metal region (614) provides an inductor LI in the LC resonator circuit, the resonance frequency of the LC resonator circuit depending on the state of the qubit, such that the state of the qubit can be measured or inferred.

To provide an electronic component capable of improving the visibility of an identification mark, while maintaining the strength of a substrate body. An electronic component includes substrate body that includes a plurality of insulating substrates laminated in thickness direction and that has a pair of principal surfaces and side surface, LC resonator that includes inductor conductor disposed on at least one of the plurality of substrates, and capacitor conductor disposed on at least one of the plurality of substrates and electrically connected to inductor conductor, shield conductor that is disposed on principal surface and that is electrically connected to ground, and identification mark that is provided on surface of shield conductor.

The invention relates to an aerosol-generating device for generating an aerosol by inductively heating an aerosol-forming substrate and an aerosol-generating system comprising such a device and an aerosol-generating article comprising an aerosol-forming substrate to be heated. The device comprises first and second LC resonator circuits, the first LC resonator circuit having a first resonant frequency and the second LC resonator circuit having a second resonant frequency different from the first resonant frequency. The control circuit further comprises a drive oscillator circuit comprising an oscillator coil inductively coupled to an induction coil for selectively generating an alternating magnetic oscillator field at the first resonant frequency or at the second resonant frequency such that the alternating magnetic field is selectively generated to selectively heat different sections of a susceptor or different susceptors in different sections of the device. The invention further relates to an aerosol-generating system comprising the device and the aerosol-generating article.

Provided is a filter device capable of reducing changes in filter characteristics caused by lamination misalignment. A filter device is provided with: a laminate including a plurality of dielectric layers; and an LC resonator including an inductor and a capacitor and transmitting a signal from an input terminal to an output terminal. The LC resonator includes a plate electrode (20A) and a plate electrode (20B), and the plate electrode (20A) and the plate electrode (20B) are disposed in different dielectric layers and are connected to each other via a via. The plate electrode (20A) and the plate electrode (20B) at least partially overlap in a plan view from the lamination direction of the laminate. The plate electrode (20A) includes an extension portion (201A) extending in an X-axis direction along a longitudinal direction of the laminate and an extension portion extending in a Y-axis direction along a short direction of the laminate. The plate electrode (20B) includes an extension portion (201B) extending in the X-axis direction and an extension portion extending in the Y-axis direction. The area of the extension portion (201A) is smaller than the area of the extension portion (201B).

The application discloses a coplanar and load-independent multi-branch constant-current constant-voltage wireless power transmission system, which comprises a high-frequency inverter power supply, an LC resonator array with soft magnetic body for enhancing magnetic coupling of adjacent coils and a plurality of loads; the LC resonator array comprises a source-end coupling coil and a common-end relay coupling coil, the common-end relay coupling coil is extended with a constant-voltage branch coil and a constant-current branch coil, the constant-voltage branch coil comprises a constant-voltage branch load-end coupling coil, the constant-current branch coil comprises a constant-current branch relay coupling coil and a constant-current branch load-end coupling coil, and double-layer soft magnetic bodies are covered on the upper and lower surfaces of the joint of adjacent coils; all the coils are connected in series with tuning capacitors for tuning the resonator to a working frequency. The application has a simple structure, each branch is independent through the common-end relay coupling inductive coil, constant-current constant-voltage output can be realized on each branch which does not affect each other, and the charging characteristics of different electric appliances are met.

Disclosed in the present invention are a miniaturized low-loss millimeter-wave filter and a radio-frequency front-end system. The miniaturized low-loss millimeter-wave filter comprises two stacked dielectric substrates, resonators and feed structures, wherein a first metal layer, a second metal layer and a third metal layer are respectively disposed at the top, middle and bottom of the two dielectric substrates; there are at least two resonators, and the at least two resonators are coupled in sequence; and the feed structures include a first feed structure and a second feed structure, the first feed structure and the second feed structure are connected to the resonators located at the head and tail ends, and by means of adjusting the connection positions, the external quality factors of an input end and an output end of the filter are controlled. Compared with conventional micro-strip or LC resonators, the present invention has a higher Q value, and a low loss of the filter can thus be implemented.

A hybrid EM-LC resonator for a Wireless Power Transfer (WPT) system includes plural capacitive loops, and LC-circuits that each have mutual inductances in non-resonant modes of operation.

The invention discloses a broadband microwave filter and an implementation method thereof, and a prototype circuit of the broadband microwave filter with a plurality of transmission zeros of a lumped parameter element circuit topological structure is obtained by constructing a transmission zeros by adopting a generalized pole extraction comprehensive method to implement a complex function. And obtaining a circuit structure of the broadband microwave filter through circuit conversion and microwave circuit distribution parameter element equivalent replacement, continuously performing impedance conversion on a distributed element circuit topological structure by using an impedance conversion method, reducing the characteristic impedance of a transmission line, and obtaining the final broadband microwave filter. The invention further designs a medium-bandwidth microwave filter which is composed of four LC resonators connected in series, three LC resonator branches and three susceptance elements connected in parallel. The broadband microwave filter with high selectivity can be designed, and the microstrip line has low characteristic impedance, so that the problem of performance deterioration of the filter caused by discontinuous impedance of the transmission line is reduced, and the working stability is improved.

The invention provides a high-efficiency general quantum computer central processing unit. The high-efficiency general quantum computer central processing unit is constructed by connecting n quantum bits together through n LC harmonic oscillators which are distributed in a radiation cluster shape, wherein each LC harmonic oscillator has the same inherent frequency, and each LC harmonic oscillator comprises a capacitor and an inductor which are connected with each other; the frequency of each quantum bit is adjustable, and the quantum bits are directly connected to the same point through an inductor of the connected LC harmonic oscillator after being connected with a capacitor of one LC harmonic oscillator; coupling interaction between the quantum bits is achieved through collective harmonic oscillator modules of the n LC harmonic oscillators, and coupling connection or disconnection between the quantum bits is controlled by adjusting the detuning amount between the frequency of the quantum bits and the inherent frequency of the LC harmonic oscillators. By implementing the quantum computer, the problem that a quantum computer in a latticed connection form needs a large number of quantum bits can be avoided, high-efficiency coupling on-off operation between any quantum bits can be realized, and commercial difficulty and cost are reduced.

A hybrid EM-LC resonator for wireless power transmission (WPT) systems comprises multiple capacitive loops and LC circuits, each having mutual inductance in a non-resonant operating mode. This resonator is usable in wireless energy transmission systems. The system comprises transmitter antenna components and receiver antenna components, each component comprising at least two separate circuits. One way to separate the circuits is to place them at a predetermined distance from each other, as shown in the diagram below. Sufficient separation of the circuits is necessary to allow for relatively loose coupling between them.

The present invention discloses a miniaturized wide-stopband bandpass filter with inductive coupling, comprising components such as a reference metal ground, a substrate, a feeder, a spiral inductor, a chip capacitor, a ground pad, a metallized through-hole, and a gold wire bond. In filter design, a large number of inductive components will cause unnecessary parasitic effects, thereby leading to communication system security issues. At the same time, it will also increase the complexity of design and debugging for technicians. The present invention introduces inductive coupling between two parallel series LC resonators, replacing the two inductors with one coupled inductor, reducing the number of inductive components, thereby avoiding parasitic effects caused by the inductors, and facilitating design and debugging work for technicians. The filter of the present invention provides low insertion loss in the passband and large signal attenuation in the stopband. By adopting coupled inductors, the size of the filter is further reduced, and it has the characteristics of miniaturization, lightness, and high integration.

A quantum device is disclosed having an LC resonator circuit for performing qubit measurement or readout. The device comprises a silicon layer (601), a dielectric layer (603) disposed upon and forming a functional interface with the silicon layer (601), a first metallic region (614) disposed upon the dielectric layer 603, and a second metallic region (624) disposed upon the dielectric layer 603 and laterally separated from the first metallic region (614). The first and second metallic regions (614, 624) are arranged to be electrically connected such that a double quantum dot, forming a qubit having a first state and a second state, can be induced beneath the first and second metallic regions (614, 624) at the functional interface. The double quantum dot provides a capacitor C1 in the LC resonator circuit and the capacitance of the double quantum dot is dependent on the state of the qubit. The first metallic region (614) provides an inductor L1 in the LC resonator circuit, and the resonant frequency of the LC resonator circuit is dependent on the state of the qubit such that the state of the qubit can be measured or inferred.