204 results about "Resonance point" patented technology

The invention discloses a stator blade shape-following frequency modulation design method based on a bending vibration mode and application, belongs to the field of vibration design of stator blades of aero-engines and gas turbines, and is suitable for vibration frequency modulation design of non-cantilever type stator structure blades (such as fans and gas compressor stators) with inner rings and outer rings in the aero-engines or the gas turbines. According to the method, firstly, static frequency and dynamic frequency modal analysis is carried out through finite element modeling, and dangerous resonance points and corresponding vibration modes in a working rotating speed range are recognized by combining a Campbell diagram; based on a vibration mode amplitude normalization result, setting a vibration degree parameter and a scale factor, selecting a high response node and carrying out directed disturbance, and updating a structure model to improve a target vibration mode frequency; and through frequency amplification verification and iterative optimization, geometric reconstruction and frequency modulation confirmation are finally completed in combination with aerodynamic performance and processing requirements. The method can realize rapid and accurate frequency modulation of a specific bending vibration mode, avoids introduction of new resonance, and has the advantages of high efficiency, strong adaptability and the like.

The invention belongs to the technical field of testing equipment, and particularly relates to a multipurpose high-frequency fatigue testing machine which comprises main control equipment and a fatigue testing machine body, the fatigue testing machine body comprises a bottom machine and an electromagnetic high-frequency generating machine body, and a balance weight table is assembled under the electromagnetic high-frequency generating machine body through connecting rod connection; clamp assemblies are assembled on the surface of the bottom machine and the lower surface of the counterweight table; the multiple balance weights are adjustably stacked on the surface of the balance weight table and used for being matched with the resonance points by replacing balance weights; and the plate clamp is detachably assembled with the clamp assembly and is used for detecting cracks generated in the test process of the test sample. The device can replace manpower to flexibly adjust the counterweight, realizes rapid and convenient operation, can timely detect a cracked plate in a test, and is convenient to timely stop the test before the sample is fractured.

The utility model discloses a surface acoustic wave device and a radio frequency front-end module. The surface acoustic wave device comprises an interdigital transducer, wherein the interdigital transducer comprises a first bus bar and a second bus bar which are oppositely arranged, an electrode finger and a plurality of gap electrodes; in the extending direction of the electrode fingers, an overlapping area is formed between the first bus bar and the second bus bar, a first area is formed between the overlapping area and the first bus bar, a second area is formed between the overlapping area and the second bus bar, and the first area and the second area are adjacent to the first bus bar and the second bus bar respectively; the plurality of gap electrodes are arranged in at least one of the first area and the second area, and the plurality of gap electrodes, the bus bars and the electrode fingers are arranged at intervals; wherein the plurality of gap electrodes form a first curve in the arrangement direction of the electrode fingers. According to the invention, the Q value near the anti-resonance point can be improved while the inhibition effect of the transverse mode is improved.

The invention belongs to the technical field of machining, and particularly relates to an ultrasonic internal broaching test platform and an ultrasonic vibration mode control method.The test platform comprises a base, a broach and a clamping mechanism, and the clamping mechanism comprises a supporting ring and a clamping sleeve; a clamping groove is formed in the broach, and a protrusion matched with the clamping groove is arranged on the clamping sleeve. A plurality of supporting columns are arranged on the base, and the supporting columns are arranged in a circular shape. The broach is arranged in a space defined by the multiple supporting columns. And a piezoelectric actuator is arranged on the broach. Based on the platform, the invention provides the control method of the ultrasonic vibration mode, modal drift can be optimized and reduced by adjusting the pre-tightening force and the ultrasonic power supply driving frequency, the pre-tightening force is adopted to adjust and stabilize the contact rigidity, and the energy loss can be reduced; through frequency tracking, resonance points are matched in real time, and energy transfer can be maximized; the two modes are cooperatively controlled, response speed and stability are both considered, and the method adapts to high-dynamic loads.

The invention discloses a broadband wearable double-frequency filtering antenna with an independent and controllable radiation zero point, and the antenna employs a double-layer dielectric substrate structure, the upper layer is a Rogers4350B substrate, the lower layer is a flexible felt substrate, and a multi-structure coupling design of a T-shaped strip, a U-shaped groove, a rectangular groove and a parasitic strip is integrated through a rectangular radiation patch. And dual-frequency work and radiation zero independent regulation and control are realized. Wherein the T-shaped strip generates a dual-frequency characteristic and a first radiation zero point between two frequency bands; the U-shaped groove regulates and controls the low-frequency zero point and broadens the low- The rectangular groove introduces a second radiation zero point between two frequency bands and expands the high-frequency bandwidth; a high-frequency zero point and a new resonance point are introduced into the parasitic strip, and the high-frequency matching bandwidth is widened. The antenna has the flexible wearable characteristic, the broadband performance and the independent controllable characteristic of the radiation zero point, and is suitable for wireless communication scenes such as WiMAX / WLAN and the like.

The invention discloses a spiral resonance photoacoustic cell and an operation method, the spiral resonance photoacoustic cell comprises a gas chamber straight tube, a spiral tube, an optical fiber collimator and an optical fiber F-P sonic sensor, the two ends of the gas chamber straight tube are open, the two ends of the spiral tube are communicated with the gas chamber straight tube, an acoustic resonance point is formed at the center of the spiral tube, and the optical fiber F-P sonic sensor is arranged in the central area of the spiral tube; and the optical fiber collimator is arranged at one end of the air chamber straight pipe. The spiral pipe is wound outside the air chamber straight pipe, the spiral pipe is communicated with the air chamber straight pipe, the structural design of the spiral pipe enables the spiral pipe to form acoustic resonance at a specific frequency, and the optical fiber F-P sonic sensor obtains a photoacoustic signal; compared with a conventional resonance photoacoustic cell, the physical volume of the resonance photoacoustic cell is greatly compressed, and the system integration level is effectively improved. More importantly, under the condition that a compact appearance similar to that of a non-resonant photoacoustic cell is kept, the device amplifies the photoacoustic signal intensity by several times through an acoustic resonance effect, and the detection sensitivity and the signal-to-noise ratio of the system are remarkably improved.

The invention discloses a capacitor loss angle determination method and device, a storage medium and computer equipment, and the method comprises the steps: carrying out the coarse frequency scanning of a measurement loop based on a logarithmic frequency step length, and determining a resonance region based on the change rate of the impedance amplitude of the measurement loop; performing fine frequency scanning on the measurement loop based on the linear frequency step length in the resonance area; determining a resonance peak based on the impedance amplitude of a frequency point in the resonance area; determining resonance attribute information of the resonance peak; selecting a reference frequency point in a preset area around the resonance peak based on the resonance attribute information; determining an initial resonance point frequency of the measurement loop, and compensating the initial resonance point frequency to obtain a resonance point frequency; determining a resonance type and a corresponding loss angle determination mode, determining initial circuit parameters, and performing error compensation on the initial circuit parameters in real time to obtain circuit parameters; and based on the circuit parameters and the resonance point frequency, determining the capacitor loss angle by using a loss angle determination mode.

The invention relates to the technical field of electronic measurement and sensing, and discloses a capacitance monitoring method and system based on a sweep frequency resonance point, and the method comprises the steps: carrying out the coarse sweeping in an initial frequency range, obtaining an impedance spectrum, and recognizing a coarse resonance interval; carrying out fine scanning in the interval and calculating an accurate resonant frequency by adopting a quadratic interpolation method; calculating a capacitance value in combination with the mapping table; and dynamically adjusting the frequency sweeping window of the next period based on the historical resonant frequency. The system comprises an excitation signal generation unit, an impedance response acquisition unit, a coarse / fine scanning control unit, a resonant frequency calculation unit, a capacitance resolving unit and a dynamic frequency window updating unit, and integrates a temperature compensation and anomaly detection mechanism. Through the two-stage frequency sweeping and self-adaptive frequency window strategy, the monitoring period is shortened to 1 / 5 or below of that of a traditional method while it is guaranteed that the resonant frequency measurement precision is superior to 0.01 Hz, and the real-time performance, stability and environmental adaptability are remarkably improved.

The invention discloses a broadband double-layer interconnection structure based on a silicon adapter plate technology, and belongs to the technical field of radio frequency microsystems. According to the method, a three-dimensional compensation structure is formed by adding square conductive metal and TSVs into lower-layer metal at one end, close to a transition structure, of an original coplanar waveguide transmission line, and a resonance point with return loss of-51dB is introduced at 17.59 GHz, so that the broadband interconnection effect that the return loss of 0-33GHz is smaller than or equal to-20dB is achieved, and the in-band insertion loss fluctuation value is reduced by 11.6% compared with that of the original structure. Compared with a traditional interconnection structure broadband design, the method has the advantages that on the premise that the plane area is not increased, the broadband interconnection design difficulty is greatly reduced through the three-dimensional structure design.

The invention discloses a digital system power distribution network impedance optimization method and system, and the method comprises the following steps: S1, obtaining the frequency-varying parasitic parameters Jg (f), Jr (f) and Jz (f) of a digital system power supply through a vector network analyzer, and enabling f to be a frequency variable; s2, calculating a dynamic matching coefficient DsC based on the frequency-varying parasitic parameter, and calling a PDN decoupling scheme set from a decoupling scheme database according to a DsC matching interval; s3, inputting the PDN decoupling scheme set into ADS software for segmented variable step size impedance simulation, wherein the step size of the frequency band from 1 MHz to 100 MHz is 0.5 MHz, and the step size of the frequency band from 100 MHz to 3 GHz is 5 MHz; and generating a surface-mounted PCB decoupling index DI containing a resonance penalty term and a micro-system substrate decoupling index WI. According to the method, the high-frequency resonance suppression capability is improved, frequency change parasitic parameter extraction is combined with resonance point penalty term design, impedance peak fluctuation is compressed to be within + / -8% of a target value in a 1-3GHz frequency band, and actually measured power supply noise of a 10Gbps SerDes interface is reduced by 62%.

The invention provides a resonance control method for an excimer lamp driven by a steep pulse edge, and relates to the technical field of molecular lamps. The resonance control method of the excimer lamp driven by the steep pulse edge comprises the following steps: S1, based on a dielectric barrier discharge equivalent circuit model, adopting a fast Fourier transform spectrum analysis method, measuring fundamental wave impedance characteristics of an LC resonance network through an impedance analyzer, establishing a transfer function containing parasitic parameters: Z (s) = [sLr + 1 / (sCr)] Rarc, and generating an initial resonance parameter set; by establishing a transfer function model containing parasitic parameters, combining fast Fourier transform spectrum analysis and accurately extracting fundamental wave impedance characteristics, the problem of resonance point offset caused by neglecting the parasitic parameters in a traditional method is solved, the precision of an initial resonance parameter set is improved, real-time phase difference data are identified on line by using a recursive least square method, and the real-time phase difference is obtained. Resonant frequency changes are dynamically tracked, frequency drift errors are compensated, resonance point tracking precision is controlled within + / -0.1%, and invalid discharge energy loss is remarkably reduced.

The invention discloses an antenna design method integrated with a two-dimensional structure balancer. The two-dimensional structure balancer is composed of a feed cable and a simulation cable, wherein the feed cable and the simulation cable are bent along a characteristic line of a two-dimensional oscillator and attached to the surface of the two-dimensional oscillator. According to the invention, a low-frequency resonance point can be introduced without adding any load or disturbance, the lower limit working frequency of the antenna is expanded, and the broadband performance is realized. The broadband performance is realized, and only the horizontal polarization component is excited when the antenna is horizontally arranged. The antenna is simple in structure, low-frequency resonance points can be introduced without additional loading or disturbance, broadband performance is achieved, the original size of the antenna is kept, the antenna has the advantage of miniaturization, and the antenna is easy and convenient to manufacture and high in cost effectiveness. The antenna array can also be used for an oscillator antenna with any two-dimensional convex boundary shape, an antenna array unit can be designed and arrayed according to the scheme, the antenna array unit is expected to be further designed and used for all communication frequency bands, and the antenna array unit has wide application prospects in high-speed data transmission scenes such as low-altitude service and everything intelligent connection.

The invention discloses a manufacturing method, a process module matching method and a substrate processing device. The manufacturing method includes: a device setting operation of matching resonance points of a first process module and a second process module different from the first process module to each other; a first substrate processing operation of processing the substrate in the first process module and / or the second process module; and a resonance frequency control operation of adjusting a resonance point of the first process module and the second process module, which is changed in a case where the first substrate processing operation is performed, to an initial resonance point, the resonant frequency control operation includes controlling at least one of a variable element of a first resonant control circuit of the first process module and a variable element of a second resonant control circuit of the second process module to adjust a resonance point of the first process module and the second process module to an initial resonance point.

A plastic integrated three-dimensional broadband dual-polarized antenna unit comprises a plastic substrate, a radiator and a feed structure, the radiator comprises a main radiator and a coupling resonator, the main radiator comprises four radiation arms, the four radiation arms and the plastic substrate form a first angle to form a three-dimensional structure body, and the coupling resonator is arranged on the plastic substrate. The first angle is larger than 0 degree and smaller than 90 degrees, the coupled resonator is arranged above the main radiator, and the main radiator is electrically connected with the feed structure; the coupled resonator and the main radiator are coupled to generate a first resonance point, and two radiation arms, located on a diagonal line, in the four radiation arms are combined to form two pairs of radiation arms and feed through corresponding feed structures to respectively generate a first polarization direction radiation signal and a second polarization direction radiation signal which are orthogonal to each other. Radiation signals generated by the two pairs of radiation arms correspond to a second resonance point, and a third resonance point is generated between the two pairs of radiation arms through coupling.

The invention belongs to the technical field of cable insulation material aging detection, and relates to a cable aging degree judgment method based on an impedance spectrum and a related device. The method comprises the steps of obtaining a reflection coefficient curve based on an impedance spectrum curve; obtaining a reflection coefficient real part curve based on the reflection coefficient curve, and extracting a resonant frequency corresponding to a resonant point of the reflection coefficient real part curve; calculating a relative dielectric constant real part of an insulating medium of the cable to be measured under different resonant frequencies; outputting an attenuation constant curve based on the reflection coefficient curve and a cable reflection coefficient amplitude calculation model; extracting a plurality of attenuation constant values of the attenuation constant curve on the resonant frequency; substituting the attenuation constant value and the relative dielectric constant real part into a dielectric loss angle tangent value calculation model to obtain a dielectric loss angle tangent value of the to-be-measured cable under the resonant frequency; and carrying out aging degree judgment based on the dielectric loss angle tangent value. The problem that an existing method is long in time consumption or cannot acquire full-band dielectric information of a cable insulating material is solved.

The invention discloses a frequency selective surface performance prediction method and related equipment. The method comprises the following steps: constructing a pre-training data set; constructing a variational auto-encoder model, and extracting potential common features of a performance curve by using a variational auto-encoder as a generative model; training a variational auto-encoder model by using the pre-training data set; preprocessing the data of the target frequency selective surface scene, extracting resonance characteristics of the performance curve, and obtaining a characteristic data set; constructing a resonance sensing variable-length proxy model; and sampling the characteristic data set to train a resonance sensing variable-length proxy model, and using the trained model to predict the performance of the frequency selective surface. According to the method, physical priori knowledge is embedded in the agent model training process to improve the curve representation capability, a resonance point sensing curve generation mechanism is introduced, the physical consistency modeling and high-quality reconstruction of the performance curve are realized from the resonance point characteristics of the curve, and the expression capability of the model to the complex resonance characteristics is remarkably improved.

The invention discloses a multi-frequency resonance point absorption type sea wave energy conversion device and a control method. The device comprises a fixed base, a sea wave energy absorption mechanism, an energy conversion mechanism, a variable stiffness mechanism and a power generation mechanism. An energy conversion mechanism, a variable stiffness mechanism and a power generation mechanism are mounted in the fixed base, and the variable stiffness mechanism and the power generation mechanism are connected with the energy conversion mechanism; one end of the sea wave energy absorption mechanism is arranged in the fixed base in a penetrating mode, and the end, arranged in the fixed base in a penetrating mode, of the sea wave energy absorption mechanism is connected with the energy conversion mechanism. According to the point absorption type sea wave energy conversion device, a new thought for improving the energy capture efficiency is provided, the spring force output by the spring is adjusted through the variable stiffness mechanism, and the stiffness of the whole sea wave energy capture device is changed through real-time adjustment of the spring force; therefore, the floater can be matched with the dominant frequency of the sea waves in a certain frequency band to generate resonance, and the capturing efficiency of the sea wave energy is further improved.

The invention provides a vibration reduction method and device for a vertical condensate pump. The vertical condensate pump aims at accurately adjusting resonance points, reducing vibration hazards and improving the running stability of the vertical condensate pump. The vibration reduction method of the vertical condensate pump is applied to the vibration reduction device, and the vibration reduction device comprises a motor, a controller, a fixing support and a lead screw. Acquiring the real-time rotating speed of the vertical condensate pump; on the basis that the real-time rotating speed is matched with a target rotating speed in a preset information base, a vibration reduction adjusting scheme of the vertical condensate pump at the target rotating speed is stored in the preset information base, and the vibration reduction scheme is used for controlling a vibration reduction device to adjust the supporting force of a lead screw for supporting the vertical condensate pump at the target rotating speed. The amplitude data corresponding to the resonance point of the vertical condensate pump is adjusted to be within the corresponding standard amplitude data range; and if the matching is consistent, determining a motor control instruction based on the corresponding vibration reduction adjustment scheme, and sending the motor control instruction to the controller.

The invention relates to the technical field of impedance measurement, in particular to an impedance measurement method and system for a common-mode inductor, and the method comprises the steps: obtaining voltage and current signals of the common-mode inductor in a test circuit, and obtaining frequency domain response atlas data containing impedance characteristics through time-frequency transformation; carrying out non-linear segmentation division on the frequency axis to form a plurality of frequency segmentation regions; extracting the phase amplitude of each segmented region, carrying out clustering segmentation, and recognizing an effective impedance frequency band; analyzing phase synchronization characteristics in the effective impedance section, and determining a common-mode resonant frequency point through clustering analysis; and fusing multi-section frequency region division, effective impedance section and resonance point information to finish accurate measurement of the impedance characteristic of the common-mode inductor. According to the method, through non-linear scanning and phase information joint analysis, the recognition precision of impedance response key characteristics in a broadband range is improved, the capturing capacity of parasitic parameters and resonance behaviors is enhanced, and efficient and high-precision comprehensive evaluation of the impedance characteristics of the common-mode inductor is achieved.

The present application provides a new type of brushless high speed motor, in which the integrated shell and air duct are separately fixed to the outside of the inner hole column, the material of the air duct and the outer shell is BMC, and the material of the inner hole column is metal. The two parts are combined and configured to be made of different materials, which can effectively buffer and reduce the resonance point of the motor, and reduce the noise caused by the high speed rotation of the motor. In addition, the housing is configured as a split type, and the air duct and shell can be directly fixed outside the inner hole column by BMC injection molding, which reduces the processing technology, reduces the burr of the housing. A grounding post is provided on the outside of the stator package for grounding.

The embodiment of the invention provides a harmonic control method and device of an electric power system and a storage medium, the electric power system comprises a converter for converting direct current into alternating current, and the method comprises the following steps: determining a frequency range of a resonance point of the electric power system; under the condition that the switching frequency of the converter falls into the frequency range, determining a target resonant frequency of the resonant point; determining the type and electrical parameters of a nonlinear device needing to be added by taking the target resonant frequency as an optimization target; and setting the non-linear device in the power system. According to the method, a relatively serious resonance point in a power system is identified, and the vibration frequency of the resonance point of the power system is changed in a mode of increasing a nonlinear device, so that the frequency point of an original resonance source in a circuit is avoided, and the harmonic problem in a specific scene is solved in a low-cost mode; and long-term stable operation of a power system can be ensured.

The lens antenna is provided in the glasses, and includes a feed sheet and an annular region. The feed sheet is configured to perform excitation feeding in the first frequency band to excite the annular region to produce a first resonance point. A capacitive coupling gap is provided between the annular region and the feed sheet. The annular region is provided around the edge of the lens, and a first gap provided at a designated position of the annular region. The feed sheet is fixed to the edge area of the lens.

The invention discloses a power divider, which is applied to the technical field of radio frequency communication, and comprises an input end, a first output end and a second output end, a plurality of first impedance conversion modules are connected in series between the input end and the first output end; a plurality of second impedance conversion modules are connected in series between the input end and the second output end; wherein the ith first impedance conversion module is the same as the ith second impedance conversion module; an isolation module is connected in parallel between each first impedance conversion module and each second impedance conversion module; the isolation module comprises at least one capacitor and at least two resistors which are connected in series in a symmetrical state, or at least one resistor and at least two capacitors which are connected in series in a symmetrical state. According to the power divider, more resonance points can be introduced in frequency response through the isolation module, so that the isolation degree of the power divider is improved.

The application relates to a vibration error distribution and suppression method of an airborne suspension type light beam pointing mechanism, and belongs to the technical field of photoelectric detection. The method steps comprise the following: determining a shear frequency range of a servo system; judging whether the light beam pointing mechanism meets the requirements by adopting wide-frequency vibration excitation; recording frequency points of resonance and amplification rates corresponding to the resonance points by adopting wide-frequency vibration excitation; obtaining light axis jitter amounts generated by each frequency point of resonance by adopting fixed-frequency vibration excitation, and sorting the light axis jitter amounts according to the sizes of the light axis jitter amounts; placing the servo system in an open loop state, exciting the light beam pointing mechanism again, obtaining light axis jitter amounts generated by each frequency point of resonance, and sorting the light axis jitter amounts according to the sizes of the light axis jitter amounts; comparing the differences between the light axis jitter amounts obtained twice, judging the reasons for the light axis jitter, and compensating the vibration error of the light beam pointing mechanism. The application effectively improves the precision of the suspension type light beam pointing mechanism and improves the detection capability of photoelectric products.

The present application provides a plasma processing device capable of controlling the position of a resonance point and bringing the resonance point close to the output end of a coil antenna. The device comprises an ICP antenna (21) having an input end (21I) and an output end (21O); a series circuit formed by connecting an additional inductor (24) and a variable capacitor (25) in series; and a control device (33) for changing the capacitance of the variable capacitor (25). The input end (21I) is connected to an antenna power source (23) via an antenna matching device (22), the output end (21O) is connected to the additional inductor (24), and the additional inductor (24) is connected to a ground end via the variable capacitor (25).

The invention discloses a sound production unit and head-mounted sound production equipment, and relates to the technical field of sound production devices, the sound production unit is in contact with human face skin when worn, and the sound production unit comprises a bone conduction sound production device and an air conduction sound production device which are independently arranged; the bone conduction sound production device and the air conduction sound production device can be independently controlled to produce sound, and the minimum value of the difference value between the working frequency band of the bone conduction sound production device and the low-frequency resonance point of the bone conduction sound production device is larger than or equal to 20 Hz. The sound production unit can utilize respective sound production characteristics of the bone conduction sound production device and the air conduction sound production device, so that the sound listening effect is improved, relatively strong vibration generated by vibration near a low-frequency resonance point of the bone conduction sound production device is reduced, and the use experience is improved.

According to the magnetoelectric dipole antenna, the coaxial feed communication bandwidth is larger than 100%, and the technical problems that broadband impedance matching and high-frequency mismatching are achieved, and the stability of a feed structure is poor are solved. According to the antenna, a meandering seam bending type electric dipole and a stepped flaring type magnetic dipole are cooperatively matched, and a feed structure and a U-shaped reflector are combined to integrally form the magnetoelectric dipole antenna. A meandering seam is etched on a horizontal rectangular patch, a vertical patch is welded on the outer side of the horizontal rectangular patch to form a three-dimensional radiator, and the three-dimensional radiator and a stepped flaring type cavity structure magnetic dipole form a closed structure. The feed structure comprises a coaxial line and two bent copper sheets, thereby realizing direct current grounding and providing mechanical reinforcement. 3.7 GHz and 4.2 GHz resonance points are introduced to realize 104.8% of relative bandwidth, while the compact structure is maintained, the broadband coverage and stable radiation characteristics are realized, the long-term reliability in an outdoor complex environment is ensured by a stable feed structure, part of 5G communication signals in a Sub-6G frequency band can be effectively covered, and the antenna is suitable for various wireless communication systems.

The utility model relates to a circular antenna array and a full-array antenna thereof, belongs to the technical field of satellite communication ground terminal antennas, and solves the problems of how to improve the broadband of the antenna array and reduce mutual coupling among array antenna units. The radiation patch on the third base layer generates radiation, and the parasitic patch on the first base layer introduces a new resonance point, so that the working bandwidth of the antenna is expanded; impedance matching in the working frequency band of the antenna array is carried out by adjusting the thickness of the second base layer; a metal wall structure increases the isolation degree between antenna units, inhibits surface wave propagation, improves the mutual coupling strength between the units, and improves the active standing wave performance of antenna array scanning.

The invention discloses an elastic wave device and a radio frequency front-end module, and the elastic wave device is characterized in that a base end widening part is arranged on an electrode finger, and the projection of the base end widening part and the projection of the free end of an adjacent electrode finger in the extension direction of the electrode finger are at least partially overlapped, or a bus bar is subjected to opening processing, and an opening is rectangular; the non-opened part is at least partially overlapped with the projection of the free end of the electrode finger in the extending direction of the electrode finger, so that the suppression effect of a transverse mode can be improved, the suppression effect of a gap mode is improved, meanwhile, a miscellaneous mode on the left side of a resonance point of the elastic wave device can be suppressed, the Q value of the elastic wave device is further improved, and the reliability of the elastic wave device is improved. And the working performance of the elastic wave device is improved.

The application discloses a kind of transceiving matching network and radio frequency front-end circuit, chip, the transceiving matching network includes: the output matching network of transmission end, the coupled resonant switch network of receiving end and first transmission line are connected in turn;The output matching network of transmission end is used for transmission end impedance matching and provides first resonance point in receiving mode;The coupled resonant switch network of receiving end is used for receiving end impedance matching, switches transceiving mode;The first transmission line is used to provide second resonance point in receiving mode.The application embodiment effectively improves the linear output power and efficiency of front end transmission by removing the switch of transmission branch, while using coupled resonant switch structure in receiving branch to ensure that receiving has wideband, low insertion loss characteristics, and comprehensively improves the radio frequency transceiving performance of radio frequency front end.The application embodiment can be widely applied in the field of wireless communication technology.