465 results about "Resonator" patented technology

A surface acoustic wave (SAW) device including resonators formed on piezoelectric substrates of different heights and a method for manufacturing the same are provided. The SAW device includes: a support substrate; a piezoelectric substrate disposed on the support substrate and including a first region, a second region, and a step region disposed between the first and second regions; a first resonator formed on the first region of the piezoelectric substrate; a second resonator formed on the second region of the piezoelectric substrate; and a bus bar formed on the step region of the piezoelectric substrate. The piezoelectric substrate has different thicknesses between the first and second regions, and a surface of the step region connecting the first and second regions forms an angle of 60 degrees or less with the top surface of the first or second region.

To provide a wireless communication signal distribution device that can easily expand the number of signals distributed. [Solution] The wireless communication signal distribution device of the present invention comprises a transmission path for transmitting a first signal, and a plurality of resonators that are not in contact with the transmission path and are spaced apart along the transmission direction of the first signal, and that resonate at the frequency of the first signal, thereby exciting a second signal that has the same frequency as the first signal. The resonators are composed of conductors having a length that causes resonance at the frequency of the first signal.

This invention relates to a locally resonant metamaterial, aiming to provide a locally resonant metamaterial based on electromagnetic branch circuit damping to achieve control over the bandgap characteristics of the metamaterial. The technical solution is a locally resonant metamaterial based on electromagnetic branch circuit damping, characterized in that: the locally resonant metamaterial is composed of multiple cells arranged coaxially and connected end-to-end; each cell includes a rubber spring assembly, an upper cell shell and a lower cell shell connected in sequence, a resonator installed between the lower cell shell and the upper cell shell, and a branch circuit connecting a pair of coils in the resonator.

Provided is a filter device wherein electric power resistance can be improved.　A filter device according to the present invention comprises a plurality of elastic wave resonators (serial arm resonators S2a, S2b) that share a piezoelectric substrate 2 having a support member 3 and a piezoelectric film that is provided on said support member 3 and includes a piezoelectric layer 6, and each have a functional electrode (IDT electrode 7) that is provided on the piezoelectric film. In each of the plurality of elastic wave resonators, a cavity section 2a is provided in the support member 3 in a location that overlaps with the functional electrode in plan view. The support member 3 and the piezoelectric film are positioned such that a section of the support member 3 and a section of the piezoelectric film face each other with the cavity sections 2a interposed therebetween. The plurality of elastic wave resonators include at least one set of parallel-connected resonators, which are at least two elastic wave resonators that are connected in parallel to each other. The cavity sections 2a of the at least one set of parallel-connected resonators are separated from each other in at least one section by a partition wall 2b, which is a section of the support member 3.

The invention relates to a measurement system (10) of the MEMS and / or NEMs type comprising: a resonant assembly (RE) comprising a plurality of N indexed OMRi resonators i, at least one resonant mechanical element MEij coupled to each OMRi resonator, and at least one waveguide (WG) to which the optical resonators are coupled, an emission device (ED), an injection device (ID), each OMRi resonator of the resonant assembly being further configured to be excited at a mechanical excitation frequency (fex / o(i)) and to modulate the light beam associated with said first excitation frequency (fex / o(i)), a resonant mechanical element (MEij) being configured to be excited at a mechanical excitation frequency (fex / e(i,j)) and to modify an optical transmission or reflection in the vicinity of the optical resonance of said associated resonator, said modification being a function of a physical quantity (u) to be measured,at least one detector (Det) and a demodulation device (DDM) comprising a plurality of synchronous detection demodulation modules (11), referred to as LIA. Figure 11,

An apparatus can include a resonator configured to oscillate at a resonant frequency; and a first oscillator core and a second oscillator core coupled to the resonator in a parallel configuration; wherein the first oscillator core is configured to drive the resonator by providing a first drive signal and generate a first oscillator signal based on oscillation of the resonator; and wherein the second oscillator core is configured to drive the resonator by providing a second drive signal and generate a second oscillator signal based on oscillation of the resonator.

This invention discloses a surface acoustic wave (SAW) device, comprising: a resonant filter element including multiple parallel resonators, one end of which is connected to at least one ground port; wherein at least two of the parallel resonators are connected to the same ground port, and the ground port connected to the at least two parallel resonators is a common ground port; and a packaging substrate located on one side of the resonant filter element; the packaging substrate includes a first substrate, which includes a common ground region and at least one independent cut-out region; the independent cut-out region is correspondingly disposed to at least one of the common ground ports and connected to the corresponding common ground port; the independent cut-out region is connected to the common ground region through a connecting portion, the extension direction of which is perpendicular to the SAW propagation direction of the SAW device. This invention improves the isolation performance of the device.

Provided in the present disclosure are an acoustic wave resonator and a manufacturing method therefor, which can be applied to the technical field of resonators. The acoustic wave resonator comprises: a substrate; a first piezoelectric layer, which is arranged on the substrate and is used for coupling a plurality of acoustic waves, the first piezoelectric layer being not patterned; and a second piezoelectric layer, which comprises: at least two piezoelectric structures, the at least two piezoelectric structures being arranged on the first piezoelectric layer, the at least two piezoelectric structures being configured to excite a plurality of acoustic waves under the action of a longitudinal electric field, and the second piezoelectric layer having been patterned; and at least two interdigital electrodes, arranged on the second piezoelectric layer, the at least two interdigital electrodes being configured to form a longitudinal electric field, and the positions of the at least two interdigital electrodes being in a one-to-one correspondence with the positions of the at least two piezoelectric structures.

The invention relates to a cyclotron which enables the production of α- or β-emitting radionuclides. The cyclotron, with a magnetic periodicity of 3, comprises three accelerating cavities connected to the centre, thus not requiring phase control between the cavities, forming a single high-frequency resonator. The six accelerating gaps per turn enable rapid acceleration (the angle ϕ between the accelerating gaps of each cavity being approximately 30°) which is essential for acceleration at the third and sixth harmonics. This cyclotron preferably has an injection system (31) supplied by different types of ion sources, making it possible to efficiently accelerate charged particles having Z / A ratios equal to 1 / 2 and to 1 / 4. The cyclotron may also have stripping extraction means positioned in the cyclotron so as to extract the charged particles and double their state of charge. These particles enable a set of nuclear reactions for producing α-emitting radionuclides.

Provided is a self-injection locking type laser device in which variations in environmental changes, optical path length, and resonator length are less likely to occur. The self-injection locking type laser device includes a first base plate, a second base plate, a temperature adjustment element disposed between the first base plate and the second base plate, a semiconductor laser light source disposed on the first base plate, a reference resonator disposed on the first base plate, located on an optical path of laser light emitted from the semiconductor laser light source, and including at least a first mirror and a second mirror for providing optical feedback to the semiconductor laser light source, a first cover covering the semiconductor laser light source and the reference resonator and in contact with the first base plate, and a second cover covering the first cover and in contact with the second base plate.

The application relates to a device and method for improving the surface quality of a hemispherical resonator, which comprises a hemispherical resonator and a support assembly for fixing the hemispherical resonator, and further comprises a grinding tool and a polishing ring for polishing the surface of the hemispherical resonator; the support assembly comprises a circular ring support and at least one set of positioning frames, the positioning frames are arranged on the circular ring support and are arranged on the side facing the grinding tool, the axis extension line of the grinding tool coincides with the axis of the circular ring support, the hemispherical resonator can be fixedly sleeved on the positioning frame, the inner polishing surface of the polishing ring is an arc surface which is matched with the outer surface of the hemispherical resonator, and the polishing ring is further connected with a driving assembly for driving the polishing ring to move along the polishing ring axis. The application ensures the uniformity and symmetry of material removal, significantly improves the surface shape precision and dynamic balance performance of the hemispherical resonator, and solves the problems of local uneven pressure, residual particles and uneven wear caused by the fact that the fixed grinding tool and the curved surface cannot be matched.

The present application relates to an elastic wave device and a communication device, the elastic wave device comprising: a package substrate; a piezoelectric substrate configured opposite to the package substrate and connected by a plurality of bumps; the bumps include a first bump also used for heat dissipation; a plurality of series resonators formed on the piezoelectric substrate, each series resonator is connected in series by a corresponding wiring; a cross-coupled capacitor formed on the piezoelectric substrate, a first end of the cross-coupled capacitor is connected to a first wiring between two series resonators, and a second end of the cross-coupled capacitor is connected to a first bump pad of the first bump joint. By utilizing the first bump used for heat dissipation as a path for the cross-coupled capacitor to the package substrate, the wiring can be effectively reduced, and the occupied area can be reduced.

The application belongs to the technical field of microelectronics, discloses a micromechanical resonator and a preparation method thereof, and improves the Q value of the micromechanical resonator Q The application provides the micromechanical resonator, which comprises a resonant unit and a coupling block; the coupling block is used for realizing mechanical energy transmission between adjacent resonant units; at least one coupling block contained in the micromechanical resonator is provided with a thermal resistance enhancement structure; the thermal resistance enhancement structure is an etching groove formed in the coupling block, or the thermal resistance enhancement structure is composed of the etching groove formed in the coupling block and a low-thermal-conductivity material located in the etching groove; the thermal conductivity of the low-thermal-conductivity material is less than that of a main material of the coupling block. Q The application can effectively improve the Q value of the micromechanical resonator without affecting mechanical coupling between the resonant units.

Systems and techniques are provided for processing audio data. For example, a process can include determining audio context information corresponding to a multi-band bone conduction microphone (BCM), wherein the audio context information is indicative of at least one of noise information or voice information. A process can include generating a control signal indicative of a resonance configuration for one or more resonators of a plurality of resonators included in the multi-band BCM, wherein the resonance configuration is based on the audio context information and corresponds to one or more frequency response adjustments. A process can include transmitting the control signal to the multi-band BCM, wherein the control signal is configured to cause the multi-band BCM to generate a BCM output signal using the resonance configuration.

The present disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate, and a class-F amplifier (500) according to an embodiment of the present disclosure may comprise: an input matching network (IMN) (510) including an input harmonic tuning network (511) and an input fundamental matching network (512); a power amplifier (PA) (520) electrically connected to the input matching network (510); and a class-F output matching network (F-OMN) (530) electrically connected to the power amplifier (520).

The application claims a MEMS frequency accurate tracking and locking method based on a resonant phase-locked loop (R-PLL). The application relates to the technical field of MEMS (micro-electro-mechanical system) resonator control and frequency tracking, and the method takes the output of a voltage-controlled oscillator as an interference signal, takes the physical response (such as weak electromagnetic leakage or acoustic radiation) of a disturbed MEMS device as a feedback signal, compares the phase difference between the feedback signal and a reference signal through a phase detector, adjusts the interference frequency, and forms a closed-loop locking system. The application adjusts the interference source frequency through a phase detector and a filter, can track the target resonant frequency drift caused by factors such as temperature change in real time, makes the MEMS resonator keep in a phase-locked state with the target resonant frequency, and ensures that the interference energy is always efficiently coupled.

A refrigerant compressor includes a volute and a resonator positioned near a discharge opening of the volute. The resonator includes a pipe including an inlet, and a plurality of plates positioned near the inlet. A first one of the plurality of plates includes a first opening, and a second one of the plurality of plates includes a second opening sized differently from the first opening.

The application discloses a method for improving filter power capacity and non-linear characteristics, a filter, a multiplexer and electronic equipment. The method comprises the following steps: arranging at least two parent series resonators and at least two parent parallel resonators between the input and output terminals of the filter, performing series non-linear splitting on the first level parent series resonator close to the input terminal, performing series non-linear splitting on the parent series resonator with the lowest parallel resonant frequency among all the parent series resonators, performing parallel non-linear splitting on the first level parent parallel resonator close to the output terminal, and performing series non-linear splitting or parallel non-linear splitting on the first level parent series resonator close to the output terminal, wherein the series or parallel non-linear splitting refers to replacing the parent resonator with two child resonators which are connected in series or in parallel and whose electrodes are reversely arranged. The method helps to improve the power capacity and non-linear characteristics of the filter and increase the flexibility of device design.

A filter module comprises a first terminal, a second terminal, and a filter disposed along each signal path extending from the first terminal to the second terminal, the filter including a plurality of series resonators and a plurality of shunt resonators disposed between the series resonators and a ground, at least one resonator among the plurality of series resonators and the plurality of shunt resonators being a first type of resonator with a temperature compensating layer for better temperature coefficient of frequency, at least one resonator among the plurality of series resonators and the plurality of shunt resonators being a second type of resonator without a temperature compensating layer.

This invention discloses a full-angle control system and method for a hemispherical gyroscope based on a dual-frequency carrier scheme, employing a dual-frequency carrier excitation / readout scheme. In this scheme, two high-frequency carriers of different frequencies are used to excite / read out the hemispherical gyroscope. x, y The electrostatic driving force signal in the directional direction is modulated and applied to the circumferential excitation electrodes of the gyroscope, causing the vibration signals in the two axes to propagate in mutually independent frequency bands. At this time, the resonator's spherical shell acts as a common capacitor plate; therefore, a front-end amplifier is used to read the modulation signals of the two axes from the resonator, which are then fed into subsequent circuits for filtering and demodulation to obtain the displacement information for each axis. Since the signal originates from... x, y The detection signals from both axes are read out through the same circuit, thereby suppressing the asymmetry of the anisotropic electrodes and x, y This system detects errors caused by asymmetry in analog circuit parameters. It achieves full-angle output functionality for a hemispherical resonant gyroscope and possesses high practical value.

This invention discloses a linear multi-zero cavity duplexer based on a hybrid resonator. The duplexer comprises a rectangular hollow metal cavity, a common signal terminal at the top of the cavity, and two signal branches on either side. The branches employ a hybrid cascaded structure of single-mode and dual-mode metal resonators, forming a linear topology without cross-coupling. The dual-mode metal resonator can operate simultaneously in inter-plate coupling mode and coaxial mode. The resonant mode order is set by pre-setting the internal inter-plate distance, allowing each branch to generate two preset transmission zeros. This invention achieves a six-pole filtering response using only four resonant cavities, forming a dual passband and generating four preset transmission zeros, ensuring high quality factor and high channel isolation while achieving device miniaturization. This invention features a simple structure, easy fabrication, and independently and precisely adjustable coupling parameters, making it suitable for 5G / 6G communication, emergency communication, and UAV-borne high-performance miniaturized RF front-end applications.

The application discloses a kind of parallel random number generation devices based on pulse driving micro-ring resonator cavity, by adopting pulse mode driving micro-ring resonator cavity, improve the instantaneous power level in cavity, enhance nonlinear effect, to effectively expand the effective bandwidth of chaotic entropy source, improve the complexity of entropy source.Meanwhile, using the characteristics that micro-ring resonator cavity naturally supports multi-wavelength output, and combining with filter demultiplexing structure, the parallel output of multiple chaotic entropy sources is realized, which is beneficial to improve the parallel generation ability of random number.Finally, by combining post-processing methods such as difference, quantization and decorrelation, the overall generation rate of random bits is improved while ensuring randomness quality.The application has relatively simple structure, is suitable for integrated implementation, and can meet the application requirements of high-speed parallel random number generation.

This invention provides a design method for a high-order matching network applied to an ultra-wideband amplifier. It involves deriving equivalent modules for the single-port preamplifier input and output stages; determining the internal structure of the high-order matching network and the transformer coupling coefficient; analyzing and obtaining the mismatch coefficient of the high-order matching network; and transforming the calculation of the load resonator quality factor into solving the constraint conditions based on the constraints between the transformer coupling coefficient, the high-order matching network mismatch coefficient, and the load resonator quality factor. The source resonator quality factor is then obtained based on the mismatch relationship between the load resonator quality factor and the high-order matching network. Finally, the parameter values ​​of the internal components of the high-order matching network are determined, resulting in the final designed high-order matching network. Compared to existing technologies, this invention achieves impedance matching between the source and load over an ultra-wideband range and enables high-gain flatness amplification within the ultra-wideband range.

A resonator-integrated duct includes: a duct portion through which intake air flows, and a resonator chamber integrally formed with the duct portion and in contact with the duct portion so that an outer wall of the duct portion serves as a partition wall. The resonator chamber includes a plurality of opening portions and respectively having an opening and an opening that penetrate through an outer wall of the resonator chamber, a communication hole that is formed, on the partition wall, at a position facing the opening of the one opening portion and that communicates with the duct portion, and a plurality of lid members that close the openings of the plurality of opening portions.

A crystal resonator is configured to be coupled to a start-up circuit, the start-up circuit comprising an H-bridge circuit having a number of switches. A number of switch control signals are generated in response to detecting a zero-crossing event of a motional current in the crystal resonator. The switches of the H-bridge circuit are controlled by the switch control signals to apply a voltage to the terminals of the crystal resonator with a first polarity during a first switch control phase and with a second, opposite polarity during a second switch control phase. During a respective first sub-phase of the respective switch control phase, the number of switches are configured in a first configuration to couple a power supply node to the respective crystal resonator terminal. During a respective second sub-phase of the respective switch control phase, the number of switches are configured in a second configuration to couple the power supply node to the respective crystal resonator terminal. In the second configuration, a resistance between the power supply node and the respective crystal resonator terminal is greater than in the first configuration. A zero-crossing is detected during each respective second sub-phase.

This invention discloses a frame decoupling structure and a MEMS resonant gyroscope incorporating it, belonging to the field of microelectromechanical systems (MEMS) technology. The frame decoupling structure is a centrally symmetric structure, comprising a drive decoupling frame and a detection decoupling frame. The drive decoupling frame is connected to a fixed anchor point via a first elastic support structure with low stiffness in the drive direction and high stiffness in the detection direction, and is connected to a mass block via a second elastic support structure with high stiffness in the drive direction and low stiffness in the detection direction. The detection decoupling frame is connected to the fixed anchor point via a third elastic support structure with low stiffness in the detection direction and high stiffness in the drive direction, and is connected to the mass block via a fourth elastic support structure with high stiffness in the detection direction and low stiffness in the drive direction. This design physically separates the mechanical paths of drive and detection using anisotropic stiffness beams, thereby effectively suppressing orthogonality errors and improving the gyroscope's performance and production yield.

Title: Frequency Converter with Optical Resonators The invention relates to a frequency converter (1) comprising a first surface (10) for receiving signal radiation (S) with a frequency fs and pump radiation (P) with a frequency fp, the first surface comprising an array of optical resonators (11) configured to generate, from the signal radiation (S) and the pump radiation (P), converted radiation (C) with a frequency fs + fp, referred to as the sum frequency and denoted fSFG. The converter further comprises a filtering device (20) and a second surface (30) configured to receive the converted radiation (C) and to focus it away from the converter. The filtering device is configured to receive the converted radiation and the pump radiation from the first surface (10) and to limit the propagation of the pump radiation from the first surface (10) to the second surface (30).Figure for the abridged version: Fig.1A.

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.

Etch-free optical metasurface (free space optical resonator) supporting million-quality-factor resonances at visible wavelengths in free space and associated systems and methods are described. In an embodiment, a free space optical resonator includes: a low refractive index layer; a high refractive index layer having a wide band gap; and a low refractive index resist layer. The high refractive index layer is disposed between the low refractive index layer and the resist layer. The resist layer includes a 2-D subwavelength periodic pattern of openings. The low refractive index layer, the high refractive index layer and the low refractive index resist layer are arranged as a vertical stack. The optical resonator is lossless at visible wavelengths of light.