7 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.

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.

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 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.

We provide a compact LC resonator utilizing integrated passive elements. [Solution] An LC resonator according to an embodiment of the present invention includes an inductor 120 with a pattern formed on an upper metal layer, and capacitors 131 and 132 formed by an upper metal plate formed on the upper metal layer and a lower metal plate formed on the lower metal layer facing each other, with the upper metal plate located inside the pattern of the inductor. By miniaturizing the LC resonator, the size of the filter can be made smaller than conventional filters, enabling high integration of components, and at the same time improving loss characteristics and performance.