555results about "Resonators" patented technology

The invention provides an active regulation and control device for a microwave resonant cavity based on Rydberg atoms. The microwave resonant cavity comprises a protective shell, an atomic gas chamber and a photoelectric detector, the active regulation and control device comprises a PID control module and piezoelectric ceramics, the PID control module is used for processing a received EIT transmission spectrum signal after generating a modulation signal to carry out atomic resonant frequency scanning on the atomic gas chamber, obtaining a target resonant frequency through a current feedback zero crossing point corresponding to an EIT transmission spectrum valley bottom value, and generating a deviation correction signal; and the piezoelectric ceramic is used for adjusting the length of a protective shell of the microwave resonant cavity according to the received correction signal, so that the atomic resonant frequency is locked as the target resonant frequency. The invention further provides an active regulation and control method for the microwave resonant cavity based on the Rydberg atoms. According to the invention, the resonant frequency of the microwave resonant cavity can be rectified in real time, and the optimal and most stable resonant mode of the local oscillation microwave frequency responding to atoms is kept.

A semiconductor device has an amplifier and common mode suppression (CMS) circuit formed on a common substrate. The CMS circuit has a first input and second input coupled for receiving an input signal and further has a first output coupled to a first input of the amplifier and a second output coupled to a second input of the amplifier to reduce common mode. The CMS circuit further has a ground plane, a first conductive trace disposed over the ground plane and coupled between the first input and first output, second conductive trace disposed over the ground plane and coupled between the second input and second output, and third conductive trace disposed over the ground plane with a first end of the third conductive trace coupled to the ground plane and a second end of the third conductive trace open circuit to form a resonator.

A superconducting qubit-based device includes: a superconducting qubit comprising a first conductive pad and a second conductive pad, each being formed of a superconducting material, and a ferromagnetic body configured to form a Josephson junction with the first conductive pad and the second conductive pad; a conducting wire spaced apart from the ferromagnetic body by a predetermined distance; and a control circuit configured to control a resonance frequency of the superconducting qubit by controlling a current flowing through the conducting wire.

A system, for measuring a dielectric property of a medium, includes: a resonator; an oscillator electrically coupled to the resonator and configured to generate an electrical signal representing an oscillation of the oscillator when the resonator is disposed in a vicinity of the medium; and measuring circuitry that receives the electrical signal. The measuring circuitry determines, from the electrical signal, at least one of a resonance frequency of the resonator and a quality factor of the resonator. The measuring circuitry determines, from the at least one of the resonance frequency and the quality factor, the dielectric property of the medium.

Localized heating can be provided using fixed-frequency planar transmission line resonators arranged along a main-line, and tuning an electromagnetic input signal frequency applied to the main line to selectively address and energize one or more planar resonators for also addressing and energizing one or more correspondingly located active substrate transducer heat sources for depositing heat in an adjacent active substrate. More generally, adjusting input signal frequency to select one or more planar resonators arranged along a main line can be used to selectively address and energize an electromagnetic-to-heat, an electromagnetic-to-vibration, or other transducer to controllably direct energy toward a desired transducer load.

The invention is generally related to the field of quantum computing and particularly to a quantum processing unit comprising at least one superconducting qubit based on phase-biased linear and non-linear inductive-energy elements. A superconducting phase difference across the linear and non-linear inductive-energy elements is biased, for example, by an external magnetic field, such that quadratic potential energy terms of the linear and non-linear inductive-energy elements are cancelled at least partly. In a preferred embodiment, such cancellation is at least 30%. By so doing, it is possible to implement a high-coherence high-anharmonicity superconducting qubit design.

Embodiments relate to a coaxial double motor for tuning an RF filter whose one motor is equipped with two coaxial shafts for controlling a tuning screwdriver for tightening a tuning screw of an RF filter and a nut driver for tightening a nut thereof and that is implemented to make one motor independently rotate one shaft for controlling a tuning screwdriver of an RF filter and the other shaft for controlling a nut driver thereof; and an RF filter tuning apparatus using the same and a method thereof.

The invention belongs to the technical field of electronic materials, and provides a microwave dielectric material, a preparation method thereof and an electronic component. The microwave dielectric material is prepared from the following raw materials in percentage by weight: 5wt%-20wt% of calcium-aluminum-boron glass, 60wt%-85wt% of SiO2 and 2wt%-15wt% of an additive, wherein the total weight percentage of the calcium-aluminum-boron glass, the SiO2 and the additive is 100%; wherein the additive comprises at least one of B2O3, Li2O and Al2O3, and at least one of ZnO and TiO2. The microwave dielectric material provided by the invention has a relatively low dielectric constant, can meet the high-frequency application requirement of the microwave dielectric material, has relatively low dielectric loss, can effectively reduce the energy loss of a system, also has a near-zero frequency temperature coefficient, and can ensure the frequency temperature property of a product at different use temperatures.

The invention relates to the technical field of communication, in particular to a miniaturized wide-passband filter based on an EMSIW and a microstrip resonator. According to the miniaturized wide-passband filter, the two EMSIW cavities are adopted, the size of the filter can be effectively reduced, high-order modes TE120, TE210, TE220 and TE130 cannot be propagated in the EMSIW cavities, and therefore the filter has a wide stop band. Two microstrip resonators are embedded at a coupling window between two EMSIW cavities, and four-order quasi-elliptical filtering response is realized under the condition that no extra circuit area is occupied. Compared with other EMSIW filters, the filter has the advantages of being small in size, wide in passband, wide in stop band and good in selectivity, and has potential application value in a communication system.

A quantum circuit and related manufacturing method are disclosed. The quantum circuit comprises a vertical Josephson junction (1001) formed by a bottom electrode (810) in a first superconducting material layer, a tunnel barrier (830), and a top electrode (820) in a second superconducting material layer. A contact portion (811) and a coupling portion (812) of the bottom electrode are located inside and outside the Josephson junction, respectively. A transmon qubit of the quantum circuit comprises the Josephson junction and a shunt capacitor formed by the top electrode and the contact portion of the bottom electrode as capacitor plates. A readout circuit is capacitively coupled to the bottom electrode through the coupling portion and includes a coupling head (861). The coupling portion is fitted into a recessed portion of the coupling head. The top electrode is configured as a floating electrode, not resistively coupled to the first superconducting material layer.

A system and method for transfer of signals between an inside of a cryogenic system and an external environment including at least one optical source (e.g., a laser) for generating optical input signals and at least one fibre for transferring modulated optical signals to the inside of the cryogenic system and receiving optical output signals from the inside of the cryogenic system. A plurality of detectors, located in the external environment, is used for detecting the optical output signals and are connected to the fibre. A plurality of first transducers converts the modulated optical signals to microwave input signals and a plurality of second transducers converts the microwave input signals to optical output signals. A first microwave impedance matching resonator is connected to the plurality of first transducers and a second microwave impedance matching resonator is connected to the plurality of second transducers.

The invention discloses a quantum bit, a quantum chip and a quantum computer, and belongs to the technical field of quantum chip manufacturing. The quantum bit is arranged on the substrate and comprises a Josephson junction arranged on the surface of the substrate; the two through holes are adjacent to the Josephson junction, penetrate through the substrate and are used for forming a bit capacitor, and the bit capacitor and the Josephson junction jointly form the quantum bit. Through the above mode, the through hole type bit capacitor provided by the invention occupies a smaller area on the surface of the substrate, so that more quantum bits can be arranged on the limited surface of the substrate.

This application discloses an electronic device applied in the field of electronic technology. The electronic device includes: a resonator, a connector, a tuner, and a ground plane. The resonator is electrically connected to the ground plane in sequence through the connector and the tuner. The tuner is used to adjust the frequency band of the clutter generated by the resonator to be outside the operating frequency band of the antenna of the electronic device.

The invention discloses a double-resonance microwave sensor, and relates to the technical field of sensors, the double-resonance microwave sensor comprises a dielectric plate, the front surface of the dielectric plate is provided with a microwave resonance layer, and complementary opening resonance units are etched on the microwave resonance layer; the complementary opening resonance unit comprises an inner ring groove and an outer ring groove which are concentrically arranged, one side of the inner ring groove is provided with a connecting bridge extending outwards, and the connecting bridge is communicated with the outer ring groove; interdigital slotting units which are symmetrical to each other are arranged on the two sides of the outer ring groove respectively; the back surface of the dielectric plate is provided with microstrip lines corresponding to the complementary opening resonance units. According to the invention, by adopting a dual-resonance structure in which the complementary opening resonance units are coupled with the microstrip lines, dual-resonance transmission response can be excited and formed, so that the detection precision and sensitivity of the sensor are improved.

This disclosure provides a planar resonant cavity for a planar gyrotron and a method for increasing its output power, relating to the field of microwave technology. The planar resonant cavity includes: a resonant cavity for increasing the energy of electromagnetic waves; wherein the energy of the electromagnetic waves gradually increases based on the interaction between the electron beam and the electromagnetic wave; electron emitting surfaces, respectively disposed at the upper and lower ends of the cavity surface in the negative Z direction, for emitting electron beams; wherein the electron emitting surfaces at the upper and lower ends of the cavity surface are symmetrical based on both the central YZ plane and the central XZ plane of the resonant cavity; and baffles, including a left baffle and a right baffle, the left and right baffles having identical structures, respectively disposed in the X direction of the resonant cavity between the electron emitting surfaces and the two ends of the resonant cavity, for reflecting electromagnetic waves to enhance the interaction between the electron beam and the wave, increase the energy of the electromagnetic waves, and increase the output power of the electromagnetic waves.

The invention discloses a Fabry-Perot resonant cavity for testing a Josephson junction and a manufacturing method, and relates to the technical field of Josephson junction testing devices. Comprising a reflecting spherical surface and a reflecting plane, and the reflecting plane is formed by the surface of one side of the metal reflecting substrate; a patterned dielectric layer is locally arranged on the surface of the metal reflection substrate; a metal redistribution layer is arranged on the patterned dielectric layer, and the metal redistribution layer forms an electrical path connected with a Josephson junction chip; wherein the patterned dielectric layer is only located right below the area covered by the metal redistribution layer. According to the invention, reliable electrical connection of Josephson junctions can be realized on the premise of not sacrificing the high Q value characteristic of the resonant cavity.

The invention discloses a superconducting microwave resonant cavity, a band elimination filter and a frequency control method, and relates to the technical field of superconducting microwave resonant cavities. The superconducting microwave resonant cavity comprises a thin film layer, a first superconducting electrode, a second superconducting electrode, a third superconducting electrode, a first port and a second port. The first superconducting electrode is arranged on the first surface of the thin film layer; the second superconducting electrode is arranged on one side of the second surface of the thin film layer, a gap exists between the second superconducting electrode and the second surface, and the first end of the second superconducting electrode is connected with the first end of the first superconducting electrode; the third superconducting electrode is arranged on the first surface; the first port is coupled with the first end of the first superconducting electrode and is coupled with the first end of the second superconducting electrode, and the first port receives an external input signal and outputs a target signal; and the second port is connected with the third superconducting electrode and receives an external direct current control signal. The resonant frequency of the microwave resonant cavity is adjustable.

The invention relates to the technical field of passive resonators, in particular to a multilayer collaborative metamaterial passive resonator for enhancing an MRI (Magnetic Resonance Imaging) radio-frequency field, which comprises a plurality of metamaterial units arranged in parallel, each metamaterial unit comprises a spiral copper wire, a flexible polyimide substrate and an external capacitor, the external capacitance value is determined through working frequencies of different magnetic resonance systems. Compared with the prior art, the structure of the multi-layer collaborative metamaterial passive resonator is designed, and the resonant frequency of the multi-layer collaborative metamaterial passive resonator is matched with the target frequency, so that the multi-layer collaborative metamaterial passive resonator realizes magnetic resonance radio frequency field enhancement in a target detection area, and the signal-to-noise ratio enhancement of a magnetic resonance image is realized.

The filter of the present application includes first and second resonators, and first and second stub resonators. The first and second resonators each include a first conductor portion, and a second conductor portion electrically connected to the first conductor portion and having a smaller impedance than the first conductor portion. The first stub resonator is electrically connected to the first conductor portion of the first resonator. The second stub resonator is electrically connected to the first conductor portion of the second resonator. The shape of the first stub resonator and the shape of the second stub resonator are different from each other.

An annular resonator and a wireless power transmission device are provided. The annular resonator comprises: a structure which includes an upper surface, a lower surface, an outer surface and an inner surface, and which is arranged according to annular shape; a plurality of conductors; and a plurality of capacitors connected, respectively, to the plurality of conductors, wherein each conductor includes a first section arranged on the upper surface, a second section, which extends from the first section and is arranged on the outer surface, a third section, which extends from the second section and is arranged on the lower surface, and a fourth section, which extends from the third section and is arranged on the inner surface, wherein the first section of respective first, second, third and fourth conductors can be sequentially arranged along the upper surface, and the second section of respective second, third, fourth and first conductors can be sequentially arranged along the outer surface.

The present application provides a resonator, filter, duplexer, multiplexer and communication device, the resonator comprises a resonant cavity, the resonant cavity has a resonant cavity and an open end, the resonator further comprises a deformed cover plate covering the open end and connected with the resonant cavity, a resonant tube located in the resonant cavity, and an adjusting mechanism arranged on the deformed cover plate, a groove is formed on the side of the deformed cover plate away from the resonant cavity, the adjusting mechanism is arranged in the groove and is used to provide a force in the axial direction of the resonant tube, so that the bottom of the groove is continuously deformed to adjust the distance between the deformed cover plate and the resonant tube. The present application can improve the intermodulation performance and high-power performance of the product, and at the same time, the production pass rate of the product can be improved, the product scrap rate and maintenance cost can be reduced, and the market competitiveness of the product can be improved.

A device includes a source region, a drain region, a channel region, a pair of depletion gates, an accumulation gate, and a superconductive resonator. The channel region is between the source region and the drain region. The pair of depletion gates are spaced apart from each other. The pair of depletion gates both overlap the channel region and define a quantum dot qubit region in the channel region and between the pair of depletion gates. The accumulation gate is above and crossing the pair of depletion gates. The superconductive resonator is laterally adjacent the quantum dot qubit region.

The invention discloses a quantum device, a quantum chip and a quantum computer, and belongs to the technical field of quantum chip manufacturing. The quantum device comprises a substrate of which the surface is provided with quantum bits; the resonant cavity and the quantum bit are arranged on the substrate in a coplanar mode, and the resonant cavity is coupled with the quantum bit and used for reading the quantum state of the quantum bit; wherein the resonant cavity takes the quantum bit as a starting point and spirally extends in a direction far away from the starting point. Through the mode, the quantum device provided by the invention comprises the spiral resonant cavity, and the resonant cavity in the form is smaller in size, namely, the area occupied by the surface of the substrate is smaller, so that more quantum devices such as quantum bits can be integrated on the surface of the substrate with the same size.

The application discloses a double-resonance microwave sensor and relates to the technical field of sensors, which comprises a dielectric plate, the front surface of the dielectric plate is provided with a microwave resonance layer, and the microwave resonance layer is etched with a complementary open resonant unit; the complementary open resonant unit comprises concentrically arranged inner ring grooves and outer ring grooves, one side of the inner ring grooves is provided with an outwardly extending connecting bridge, the connecting bridge is in communication with the outer ring grooves; the two sides of the outer ring grooves are respectively provided with interdigitated slotted units that are symmetrical to each other; and the back surface of the dielectric plate is provided with a microstrip line corresponding to the complementary open resonant unit. The double-resonance structure of the complementary open resonant unit and the microstrip line coupling can excite a double-resonance transmission response, so that the detection precision and sensitivity of the sensor are improved.

The invention relates to the technical field of ceramic materials, in particular to temperature-stable low-loss low-dielectric tetragonal lithium-based microwave dielectric ceramic and a preparation method thereof, the chemical formula of the microwave dielectric ceramic is LiScO2, and the preparation raw materials are Li2CO3 and Sc2O3. The preparation method comprises the following steps: weighing Li2CO3 powder and Sc2O3 powder according to a certain proportion, mixing, sequentially carrying out wet grinding and drying, pre-sintering for 4-8 hours in an air atmosphere at the temperature of 700 DEG C to obtain pre-sintered powder, carrying out secondary ball milling and drying on the pre-sintered powder, adding a binder, granulating, carrying out compression molding, and finally sintering for 4-8 hours in an air atmosphere at the temperature of 875-925 DEG C, so as to obtain the Li2CO3 / Sc2O3 composite material. The tetragonal lithium-based microwave dielectric ceramic can be obtained. The LiScO2 microwave dielectric ceramic prepared at the sintering temperature of 900 DEG C has a near-zero temperature coefficient of resonance frequency (-3.4 ppm / DEG C), can ensure the thermal stability of devices, and is widely used for manufacturing various dielectric antenna substrates, resonators, filters and other microwave devices.

A device for measuring a property of a substrate comprises an enclosure, two resonators, and two probes. The substrate has a top surface, and the enclosure defines a cavity for placing the substrate. The resonators extend into the cavity of the enclosure. The probes extend into the cavity, and each of the probes comprises a loop that extends about an axis that is substantially parallel to the top surface of the substrate so that the probes are operable to excite a transverse magnetic mode signal in the cavity.

Printed microstrip filter. A printed film radio frequency microstrip bandpass filter includes: a plurality of resonators disposed on a dielectric substrate; a first input / output (I / O) interface and a second I / O interface connected to corresponding first and second resonators located on the sides of one or more intermediate resonators. The opposite ends of the one or more intermediate resonators are connected to a ground plane on the opposite side of the substrate via corresponding wires. The intermediate resonators have an electrical wavelength that is half the wavelength of the filter's center frequency, and the first and second resonators may have an electrical wavelength that is nominally half the wavelength of the bandpass filter's center frequency.

A resonator apparatus, a filter apparatus as well as a radio frequency and microwave device are disclosed. According to an embodiment, the resonator apparatus comprises an electrically conductive case and a dual-mode dielectric resonator provided in the electrically conductive case. The dual-mode dielectric resonator comprises a first dielectric block having a shape of a columnar body whose cross section is a cruciform. A mode coupling structure for coupling two resonant modes of the dual-mode dielectric resonator is provided in the columnar body. A bottom face of the columnar body is supported by an inner face of the electrically conductive case or by a supporting member provided on the inner face of the electrically conductive case. In at least one extending direction of a first extending direction and a second extending direction of the cruciform which are perpendicular to each other, lateral end faces of the columnar body are spaced apart from inner faces of the electrically conductive case.

The application discloses a dielectric resonator, comprising: a cavity; a cover plate, comprising a first cover plate and a second cover plate, the second cover plate being crimped on the first cover plate; a tuning screw being installed on the cover plate; a metal resonant rod being fixed on the bottom of the cavity; a dielectric resonant rod having an upper end surface and a lower end surface, the upper end surface being in contact with the first cover plate, and the lower end surface being in contact with the metal resonant rod; the first cover plate having a first opening, a first slot portion and a second slot portion, the first slot portion being located radially outside the first opening and axially above the dielectric resonant rod, an elastic member being arranged in the first slot portion, and the second slot portion being located radially outside the first slot portion. The dielectric resonator adopts a double-layer thick cover plate, and through designing an inner and outer double-cut slot structure on the first cover plate, the upper and lower end surfaces of the dielectric resonant rod are kept in good contact in a simple and controllable structure.

A system for tracking diet and nutrition includes an oral module configured to be affixed within a mouth of a user and including a set of salivary sensors responsive to a level of at least one nutrient. The system also includes a set of eating event sensors responsive to an eating event. The set of eating event sensors can be included in the oral module, or can be included in a body module configured to be affixed adjacent to a body part of the user.