8117 results about "Resonator" patented technology

Aspects of this disclosure relate to an acoustic wave resonator with a patterned conductive layer. The acoustic wave resonator can include a piezoelectric layer, an interdigital transducer electrode over the piezoelectric layer, and a temperature compensation layer over the interdigital transducer electrode. The interdigital transducer electrode can include a bus bar and fingers extending from the bus bar. The fingers can each include an edge portion and a body portion. The patterned conductive layer can overlap the edge portions of the fingers. The patterned conductive layer can conductive portions that are spaced apart from each other. A portion of the temperature compensation layer can be positioned between the patterned conductive layer and the interdigital transducer electrode.

An acoustic wave device includes first and second acoustic wave resonators, each including a piezoelectric layer and a functional electrode, and an acoustic coupling layer laminated between the piezoelectric layer of each of the first and second acoustic wave resonators. Each of the functional electrodes of the first and second acoustic wave resonators includes at least one pair of electrode fingers. In each of the first and second acoustic wave resonators, when a thickness of the piezoelectric layer is defined as d and a center-to-center distance of the electrode fingers adjacent to each other is defined as p, d / p is about 0.5 or smaller. The first and second acoustic wave resonators face each other across the acoustic coupling layer.

The invention discloses a comprehensive performance prediction and structural parameter optimization method for a hemispherical resonator, and belongs to the technical field of aerospace inertia. According to the method, a high-precision finite element simulation model of the ideal hemispherical harmonic oscillator is established based on a multi-region grid uniform division method; aiming at the condition that each structure parameter corresponds to different structure sizes, calculating through a finite element model of a control variable to obtain a data set of different performance parameters of the hemispherical resonator; based on a BP neural network algorithm optimized by a particle swarm optimization algorithm, after the data set is divided into a training set and a test set, a comprehensive performance parameter prediction model of the hemispherical harmonic oscillator is established; and taking the PSO-BP neural network model as the input of a second-generation non-dominated sorting genetic algorithm, and performing multi-objective optimization on the structural parameters of the hemispherical harmonic oscillator by taking higher thermoelastic damping and larger minimum frequency difference between the interference modal and the PSO-BP neural network model as optimization objectives. The use performance of the hemispherical resonator is improved, and the performance requirement of the aerospace technology field on the high precision of the hemispherical resonator gyroscope is met.

An acoustic wave device includes acoustic wave resonators each including a support substrate, a piezoelectric body layer, and a functional electrode. The support substrate includes a cavity portion overlapping a portion of the functional electrode in a first direction. The cavity portion is connected to an opening in a portion of the support substrate facing the piezoelectric body layer. The acoustic wave resonators include a first resonator and a second resonator with a larger intersecting width of the functional electrode than the first resonator. A taper angle of the first resonator is larger than a taper angle of the second resonator.

A disclosed water droplet sensing system and methods using split-ring resonators, which may be embedded within a material. In use, a component includes at least one split-ring resonator (SRR) which may be embedded within a material of the component. The at least one SRR may be formed from a composite material. Additionally, the at least one SRR may be configured to form a signal that is correlated with a concentration of water proximate to the at least one SRR. In some aspects, each SRR may resonate at a first frequency in response to an electromagnetic ping when the material is in a first state, and may resonate at a second frequency in response to the electromagnetic ping when the material is in a second state. A resonant frequency of the material may be based on physical characteristics of the material (including fluid accumulation on the material).

Aspects of this disclosure relate to acoustic wave devices on stacked die. A first die can include first acoustic wave device configured to generate a boundary acoustic wave. A second die can include a second acoustic wave device configured to generate a second boundary acoustic wave, in which the second die is stacked with the first die. The first acoustic wave resonator can include a piezoelectric layer, an interdigital transducer electrode on the piezoelectric layer, and high acoustic velocity layers on opposing sides of the piezoelectric layer. The high acoustic velocity layers can each have an acoustic velocity that is greater than a velocity of the boundary acoustic wave.

The invention discloses a tunnel fire air curtain smoke prevention control method and system, and relates to the technical field of intelligent fire fighting, and the method comprises the steps: building a digital twinborn prediction model, and generating a fire source position coordinate and a smoke diffusion trend prediction map through multi-physics field coupling simulation; analyzing the stability requirement of the air curtain jet flow through a Brapare-Prandtt boundary layer analysis algorithm, and generating a jet flow enhancement requirement parameter table in combination with temperature gradient correction; optimizing an acoustic vortex main frequency band by adopting a Slodhaar number, and generating an acoustic vortex control parameter set in combination with a matched sound pressure level and a configured resonator phase difference; and converting the acoustic vortex control parameter set into an execution instruction, monitoring the jet velocity, the vortex street stability and the smoke retardation effect in real time, and dynamically correcting the parameters of the digital twinborn prediction model. According to the method, physical quantity outline matching of the blocking intensity and the sound pressure level is achieved through the sound intensity-momentum equivalent method, and the optimal phase configuration is determined in combination with POD modal analysis.

The invention relates to the technical field of electromagnetic materials, and discloses a lossy multimode resonant metasurface unit and a multifunctional active coding wave absorber. The lossy multimode resonant metasurface unit comprises a lossy metal pattern layer, a supporting dielectric layer, an impedance matching dielectric layer and a metal ground layer which are sequentially arranged from top to bottom; the lossy metal pattern layer comprises a multi-mode resonator and a radio frequency PIN diode, the multi-mode resonator is used for realizing a plurality of resonance modes and playing a role in electromagnetic wave frequency selection, and the radio frequency PIN diode is used for playing a role of an adjustable resistor and adjusting the electromagnetic wave loss so as to realize intensity adjustment of reflected electromagnetic waves; every two adjacent multi-mode resonators are connected in a cascading mode through a radio frequency PIN diode and are combined to form a closed-loop pattern. The multifunctional electromagnetic wave absorber is simple in structure, has the constant phase scattering cancellation characteristic, and can independently regulate and control the reflection amplitude so as to solve the technical problem of an existing multifunctional electromagnetic wave absorber.

A displacement sensor including an optical whispering gallery mode (WGM) microresonator and a package encasing at least a portion of the WGM microresonator, the package comprising polydimethylsiloxane (PDMS). The WGM microresonator can be configured as a sensor and used in a displacement detection system that can detect displacement with high quality. Artificial intelligence can be implemented in the displacement detection system for improved sensing of different variables and / or pinpointing the location of perturbations.

The present invention discloses a mold and method for thermoforming a micro-hemispherical resonator based on full mold constraint. The mold comprises a main body and a forming ball. The main body has a cavity recessed downward from its top surface, the cavity having a plurality of air holes communicating with the exterior of the main body, and the bottom of the cavity has positioning holes. The forming ball is placed in the cavity through the positioning holes. The shape parameters of the forming ball match the shape parameters of the inner cavity of the micro-hemispherical resonator. The method for thermoforming a micro-hemispherical resonator employs the above-mentioned mold to form the micro-hemispherical resonator. Compared with the prior art, the present invention utilizes a precisely machined forming ball to constrain the shape of the micro-hemispherical resonator during the forming process, thereby further improving the structural symmetry of the micro-hemispherical resonator and enabling control of the shape parameters of the micro-hemispherical resonator.

An acoustic wave device includes acoustic wave resonators each including a piezoelectric substrate including a piezoelectric body layer, and an IDT electrode on the piezoelectric substrate and including electrode fingers. At least one of the acoustic wave resonators is an excitation angle change resonator, in which, the piezoelectric body layer includes a propagation axis and the electrode fingers are curved. In the excitation angle change resonator, an excitation direction of an acoustic wave in a portion of one of the electrode fingers is one of first, second, or third directions. An excitation angle of the excitation angle change resonator is not uniform in the IDT electrode.

The invention discloses a waveguide array gas sensing system for high-sensitivity multi-gas detection. The waveguide array gas sensing system comprises a waveguide substrate, and a waveguide Bragg grating, a phase shift Bragg grating, a micro-ring resonator, a Mach-Zehnder interferometer, a waveguide array, an electric field regulation and control module and a signal processing unit which are arranged on the waveguide substrate. Through the waveguide array structure, topological optical protection adsorption and other technologies, the sensitivity and selectivity of methane, carbon dioxide and other gases are effectively improved, and accurate detection can be achieved in a complex environment; according to the invention, a topological optical principle is adopted, signal loss caused by environmental noise or surface defects is reduced, and the stability of the sensor is improved; according to the invention, automatic calibration and temperature and humidity compensation of the system are realized, and autonomy and operation convenience of the system are enhanced; the system has high environment adaptability and can stably work under different temperature and humidity conditions.

A packaged acoustic wave component has a device substrate and a metal layer disposed over the device substrate. An acoustic wave device is disposed over at least a portion of the metal layer so that the metal layer is interposed between the device substrate and at least a portion of the acoustic wave device. A cap substrate is spaced above the device substrate, and peripheral wall that is attached to and extends between the device substrate and the cap substrate, the peripheral wall surrounding the acoustic wave device. One or more vias extend through the device substrate and are disposed under the metal layer.

The invention belongs to the technical field of topological photonic crystals, and discloses a topological laser resonant cavity, a design method thereof and a topological valley photonic crystal laser. According to the invention, three different photonic crystal areas are utilized to form a three-layer heterostructure, and the three different photonic crystal areas are divided into A, B and A'areas according to the same lattice period array arrangement; the area A and the area A'are the innermost layer and the outermost layer of the topological laser resonant cavity respectively, the closed topological laser resonant cavity is formed at the interface of the area A and the area A ', and the area B is embedded in the middle of the interface; the three different photonic crystal regions have different primitive cell energy band characteristics, and the energy band structure of the photonic crystal primitive cell in the region B has a linear dispersion curve and can be described by a Dirac equation; and the photonic crystal primitive cells in the A'and the A region are energy band structures with different topological valley numbers obtained by breaking the symmetry of the photonic crystal primitive cells in the B region. According to the invention, the performance of the topological valley photonic crystal laser can be enhanced.

A wearable electronic device can include a sidewall housing defining an internal volume and a band slot configured to receive a securement band. The sidewall housing can include a radio-frequency (RF)-transparent window defining the band slot, a rear cover coupled to the sidewall housing with the rear cover including metal, an antenna resonator disposed in the internal volume adjacent the RF-transparent window, and a conductor electrically coupling the rear cover to the antenna resonator.

A method of generating a coupling gate between qubits and a superconducting integrated circuit providing a pulse source are discussed. The method includes energizing a power line connected to a pulse source, applying a signal to a control line in communication with a coupler, the coupler in communication between the two qubits, and applying a second signal to a control line in communication with a resonator. The method further includes inducing a tone on a transmission line that selectively communicates with the resonator to bias the resonator, the resonator coupling a signal to the pulse source in combination with the power line, and applying a third signal to a pulse source control line in communication with the pulse source, the pulse source applying a pulse to the coupler in response to the third signal to couple the two qubits for a duration of the coupling gate.

A measuring arrangement (10; 110, 210; 310) for determining the position of a movable component (526) in an optical system (500) for microlithography comprises: an optical resonator (26) with two resonator mirrors (28, 30) enclosing a resonator cavity (32), and a movable measuring mirror (14) associated with the component, which is arranged within the resonator cavity for directing a measuring beam back and forth between the resonator mirrors. The measuring mirror is arranged at a working distance (34) from one of the resonator mirrors, which has a curvature adapted to the measuring mirror such that its center point (31) is located on the measuring mirror or at most 10% of the working distance therefrom.

A quadrature oscillator according to the embodiments herein comprising two pairs of main transistors, two pairs of resonators and two pairs of injection transistors. The quadrature oscillator is split into two halves, which are separated in the chip layout. That is the two pairs of resonators are separated from each other, and the two pairs of the main transistors are separated from the resonator they coupled to such that the quadrature oscillator is separated into two spaced apart oscillator halves connected by transmission lines.

A horizontally polarized omnidirectional multi-band antenna structure includes a substrate and two structurally-symmetric radiators, each being provided on a layout area on one of the two opposite sides of the substrate, and including a X-shaped primary microstrip line, four secondary microstrip lines, four primary stubs, four secondary stubs and four resonators. The primary microstrip line has four end points arranged with the secondary microstrip lines along different extending directions. The primary stubs extend along different directions from four sections of the primary microstrip line. Each secondary microstrip line is provided with one of the secondary stubs. Resonators are provided between four end points of the primary microstrip line and the primary stubs. The antenna structure supports WiFi 6E / WiFi 7 frequency bands including the 2 GHz, 5 GHz and 6 GHz bands, has characteristics of horizontal polarization and omnidirectionality, and effectively satisfies the needs for miniaturized multi-band and wide band antennas.

The photonic integrated device comprises a substrate, a plurality of mechanical resonator structures on a surface of the substrate, exposed to receive sound waves from outside the device; a plurality of sensing optical waveguides, each sensing optical waveguide at least partly mechanically coupled to at least one of the mechanical resonator structures, or a sensing optical waveguide that is at least partly mechanically coupled to all of the mechanical resonator structures; an input optical waveguide on the surface of the substrate, coupled to the plurality of sensing optical waveguides or the single sensing optical waveguide, for supplying light to the plurality of sensing optical waveguides or the single sensing optical waveguide; at least one output optical waveguide on the surface of the substrate, coupled to the plurality of sensing optical waveguides or the single sensing optical waveguide, for collecting light from the plurality of sensing optical waveguides or the single sensing optical waveguide that has been affected by vibration of plurality of mechanical resonator structures.

The technology described herein is directed towards resonators that incorporate or are closely coupled to transducers from which energy is harvested. The resonators can be unit cells of a metasurface configured for narrowband sound absorption by phase cancellation of the acoustic wave Electroacoustic transducers such as piezoelectric transducers can be positioned, e.g., at the neck ports of the resonators, to generate electricity as the air pressure of incoming acoustic waves enters the unit cells. Energy can be harvested from the electricity, and stored for usage and / or used directly to power a device. Such a device powered by the harvested energy can change the resonant frequency of the device, e.g., by changing temperatures in the resonators' air cavities, changing respective dimensions of the respective air cavities, or changing the resonant frequency of the unit cells resonators by changing respective airflow in the respective air cavities.

An adaptive modular multimodal communication and computing panel includes a multilayer stack with a protective layer transmissive in selected bands, a reconfigurable communication layer operable in phased array, reflectarray, hybrid phased reflector, free space optical, or quantum modes, and electronics with heterogeneous processors. A multi scale interconnect and input and output fabric couples electrical, radio frequency, guided optical, and free space optical domains through interfaces including electro optic transduction and RF or baseband conversion. The fabric may implement programmable true time delay, resonators, and comb referenced timing. A management system coordinates beamforming, sensing, routing, calibration, workload placement, and security. Panels tessellate and connect by electrical, radio frequency, and fiber optic interfaces, supporting hot swappable modules, blind mate connectors, robotic servicing, and anti tamper features. Power and thermal subsystems harvest, store, regulate, and dissipate energy. The architecture scales from chip level modules to vehicle, airborne, maritime, orbital, and deployable systems.

The present application provides a method for generating a micro-scale columnar high-speed acoustic beam in a liquid environment, comprising: a liquid environment; a high-frequency resonator, which generates 0.5-30 GHz ultrasonic waves to act on the liquid environment during operation, generating a directional fluid motion along the direction of propagation of the sound wave in the liquid at the solid-liquid interface, i.e., a columnar focused acoustic beam; the high-frequency resonator is driven to operate in at least one driving cycle with a first power, each driving cycle including a first stage and a second stage, the first stage driving the high-frequency resonator to operate, and the second stage stopping the driving; the magnitude of the first power causes the high-frequency resonator to generate an acoustic beam in the first stage; and the duration of the first stage at the first power is less than the second threshold or the duty cycle of the first stage in one driving cycle is less than the first threshold. Corresponding applications are also provided, such as a method for directional transport of liquids or particles in liquids, and a method for processing target objects.

Systems, methods, and devices for generating tunable low frequency signals, such as microwave and radiofrequency signals are disclosed. A first waveguide in optical communication with a first ring resonator can be configured to receive a light input and generate frequencies via optical parametric oscillation. A second waveguide with second ring resonator can receive the frequencies and optically synchronize the frequencies via optical frequency division to generate a low frequency signal. One or more heating elements can be connected to each ring resonator to tune the resonators and reduce noise associated with the low frequency signal.

The invention provides a surface acoustic wave resonator, a filter and electronic equipment, and relates to the technical field of semiconductors. A piston structure is formed in the tail end area of an electrode finger strip, larger sound velocity difference is achieved by changing the sound velocity of the tail end area of the electrode finger strip, and therefore a transverse mode is reflected in different directions to avoid energy dissipation caused by resonance. And a high-sound-velocity material covers the middle area of the interdigital electrode to form a high-sound-velocity layer, and a sound barrier between the middle area and the tail end area of the interdigital electrode is constructed, so that the propagation of a transverse mode is inhibited, and the effect of inhibiting in-band transverse stray is achieved.

An air conditioning device includes an air conditioning case defining an air passage through which air flows to an air-conditioning target space, and an air cooler arranged inside the air conditioning case to cool air by absorbing heat from air. The air conditioning device further includes a blower fan arranged inside the air conditioning case on a downstream side of an air flow of the air cooler to generate an air flow passing through the air cooler, and a resonator provided outside the air passage. The resonator includes a cavity portion having a predetermined volume and a communication portion that allows communication between the cavity portion and the air passage. The cavity portion is provided with a partition member that divides an internal space of the cavity portion into multiple closed spaces, and each of the multiple closed spaces communicates with the air passage via the communication portion.

An on-chip mid-infrared micro-ring resonant cavity microfluidic spectrometer is integrated on a substrate material and comprises a spot size converter, an optical coupler, a microfluidic module, a micro-ring resonant cavity, a miniature thin-film resistance heater, a sequential control power supply module, an optical filtering system and a photoelectric detector array. Selective filtering is performed on an input optical signal, and the flow and flow velocity of liquid or gas to be detected are controlled by using the microfluidic module, so that selective absorption of spectral components of the liquid or gas to be detected is realized. In addition, the invention also discloses a mid-infrared integrated optical chip micro-fluidic multiphase detection device comprising the spectrometer and a detection method thereof, the device also comprises a pumping and reference light source module and an on-chip mid-infrared frequency comb generation module, a broadband frequency comb is generated as a light source, a photoelectric detector array is used for collecting signals, and the detection precision is improved. The detection and inversion of the type and concentration of multi-component liquid or gas to be detected are realized, and the on-chip, real-time and micro detection of multi-component substances is realized.

The invention provides a resonator phase noise suppression method based on Kalman filtering. The resonator phase noise suppression method comprises the following implementation steps: sampling displacement of a resonator; calculating a priori error matrix and a priori estimation value of each sampling; calculating the Kalman gain of each sampling; calculating an error matrix of each sampling; and obtaining a resonator phase noise suppression result. According to the method, suppression of the resonator phase noise in the mechanical resonant device is realized based on Kalman filtering, and the method is suitable for various noise types including high-frequency noise, can flexibly cope with different working environments and noise types, and has relatively good adaptability; based on the recursive calculation characteristic of Kalman filtering, state estimation can be updated every time new data arrives, processing of all historical data is not needed, meanwhile, dynamic estimation and optimization are carried out on input signals in combination with a prediction model and noise observation, a filter can rapidly respond to the change of signal frequency, and the accuracy and the reliability of the method are improved. And an efficient real-time adjustment capability is provided.

A metamaterial includes a plurality of films arranged with main surfaces thereof facing each other, a plurality of micro-resonators included in the plurality of films, and a stress relieving member disposed between two mutually-adjacent films of the plurality of films. The plurality of films transmit a target electromagnetic wave that is an electromagnetic wave having a wavelength within a target wavelength range. The plurality of micro-resonators resonate with the target electromagnetic wave. The stress relieving member transmits the target electromagnetic wave and has a lower elastic modulus than the plurality of films.

The invention provides a TF-SAW resonator, a preparation method thereof and a filter, and relates to the technical field of semiconductors. The interdigital electrode comprises piston structures, sub-bus bars and metal bumps, the piston structures are positioned at two ends of the acoustic part, it can be understood that the piston structures are arranged at the tail end areas of the acoustic part on the electrode finger strips, and larger sound velocity difference is realized by changing the sound velocity of the tail end areas; therefore, the transverse mode is reflected in different directions to avoid energy dissipation caused by resonance; on a propagation path of a transverse mode, the sub bus bars and the metal bumps are sequentially arranged, clutter interference is eliminated by causing sound velocity difference, so that clutter mode interference is inhibited to the greatest extent, the Q value is improved, the insertion loss flatness in a passband is improved, and the performance of the TF-SAW resonator is further improved.