2158 results about "Isolator" patented technology

The invention relates to the technical field of isolator service life prediction, and discloses an isolator remaining service life prediction method based on deep learning. The method comprises the following steps: acquiring a vibration signal and a temperature signal when the isolator operates, and constructing a multi-dimensional sensor sequence; dividing a plurality of sub-sequence units containing a fixed time window; extracting time domain and frequency domain features of each sub-sequence unit, and generating a fusion feature vector; calculating statistical distribution characteristics and variation trend characteristics of key indexes in the vector, and outputting a health state index; through a bidirectional recurrent neural network model containing an attention mechanism, taking the health state index and the historical degradation data as input, processing a time sequence dependency relationship through multi-layer residual error connection, and generating a residual service life prediction value; and updating the multi-dimensional sensor sequence according to the real-time sensor signal, and dynamically correcting the predicted value. According to the method, multi-dimensional data are integrated, degradation characteristics are deeply mined, and the accuracy and adaptability of prediction of the remaining service life of the isolator can be improved.

The invention relates to a low-frequency vibration isolator with a wide quasi-zero stiffness interval. The low-frequency vibration isolator comprises a bearing platform, a base, a first negative stiffness assembly, a second negative stiffness assembly and a linear vibration isolation assembly. The bearing platform and the base are arranged in parallel and are both provided with bolt holes and limiting holes; a linear vibration isolation assembly is installed between the bearing platform and the base. The first negative stiffness assemblies are symmetrically distributed with the center point connecting line of the bearing platform and the base as the symmetry axis. The top of the first negative stiffness assembly is connected with the bearing platform, and the bottom of the first negative stiffness assembly is connected with the base. The two ends of the second negative stiffness assembly are connected with the two first negative stiffness assemblies correspondingly. The low-frequency vibration isolator has the characteristics of high static rigidity and low dynamic rigidity, the contradiction between the bearing capacity and the vibration isolation performance of a linear vibration isolation system is effectively solved, and the effective low-frequency vibration isolation effect on a vibration-isolated object is achieved while the bearing capacity of the vibration isolator is guaranteed.

The invention discloses a response time conduction type testing device and method for a radio frequency channel protection device. The response time conduction type testing device comprises a transient field intensity generating device, an isolator, a directional coupler, a first attenuator, a second attenuator, a third attenuator, a first power meter, a second power meter, a high-speed oscilloscope, a vector network analyzer and a radio frequency channel protection device to be tested. According to the method, the response performance of the protection device under the influence of the transient strong field can be comprehensively, safely and accurately evaluated, the amplitude limiting function of the protection device can still be effectively exerted under the action of the transient strong field with an extremely narrow rising edge, and then subsequent devices, circuits and equipment are prevented from being damaged.

The invention relates to an all-fiber sub-hundred femtosecond laser based on an SESAM. The all-fiber sub-hundred femtosecond laser comprises the SESAM, a wavelength division multiplexer, a pumping source, a pumping protector, a gain fiber, a chirp fiber bragg grating, an isolator, a reflector, a compression unit and an autocorrelator. According to the invention, the chirp fiber bragg grating with the dispersion amount of 0.115 ps / nm is adopted to compensate positive dispersion in the cavity, so that mode-locked pulse with the spectral width of 23nm is realized. A transmission-type diffraction grating pair is adopted, the pulse width is compressed to 88fs, and the maximum spectral width 27nm is obtained under the dispersion of 0.00087 ps2 in a near-zero cavity. The condition that the optimal spectral bandwidth of the optimal seed source pulse based on the optical fiber chirped pulse amplification laser should be larger than 15 nm is met, and the compression pulse distortion of the amplifier is reduced. By adopting the linear cavity, the SESAM is adhered to the surface of the single-mode optical fiber patch cord for starting mode locking, so that an all-optical-fiber structure of the system is realized, and the single-mode optical fiber patch cord is suitable for industrial integrated application.

The all-metal vibration isolation buffering device comprises a bearing base, a center disc is arranged in the center of the bearing base, a buffering pad is arranged between the center disc and the bearing base in a clamped mode, and a plurality of vibration isolation structures are evenly distributed on the periphery of the center disc in a circumferential mode; and the vibration isolation structure is telescopically connected with the central disc. Due to the excellent high and low temperature resistance, fatigue resistance and omni-directional vibration isolation and buffering performance, an efficient and stable vibration isolation and buffering effect can be provided in an extreme environment. The all-metal multidirectional vibration isolation buffer structure can replace a traditional rubber vibration isolator, is applied to the fields of spaceborne, aerospace, precise instruments, ship equipment, high-speed traffic and the like, and is used for reducing the influence of vibration on key equipment, improving the stability of a system, prolonging the service life of the system and meeting the application requirements of high reliability and long service life.

An electronic device, such as a watch, has an input mechanism, such as a crown, that may receive translational inputs, rotational inputs, and / or touch inputs. Inputs received at the crown may result in changes in operation of the electronic device and / or outputs, such as graphical outputs, provided by the electronic device. In various embodiments, the crown includes a retainer that couples an outer crown body to an inner crown body and secures an isolator between the outer crown body and the inner crown body. The embodiments of the crown described herein provide a simple and robust input mechanism for receiving rotational, translational, and touch inputs as described above, while simplifying part alignment, ensuring consistent rotation, and allowing for efficient manufacturing.

The invention relates to a vibration absorption and isolation device structure with an additional acoustic black hole combined with a hexagonal honeycomb frame. The vibration absorption and isolation device structure comprises an upper cover plate, a lower cover plate, the hexagonal honeycomb frame and an additional acoustic black hole vibration reduction structure, wherein the upper cover plate and the lower cover plate are oppositely arranged; the bottom of the hexagonal honeycomb frame is connected with the lower cover plate while the top of the hexagonal honeycomb frame is connected with the upper cover plate; the hexagonal honeycomb frame is formed by a plurality of hexagonal cell arrays, and the section formed by sectioning a single hexagonal cell along the direction perpendicular to the cover plate is in a symmetrical hexagon shape; the bottom of the additional acoustic black hole vibration reduction structure is fixedly connected with the lower cover plate, and the additional acoustic black hole vibration reduction structure is not in contact with the upper cover plate and the hexagonal honeycomb frame. Low-frequency vibration energy is absorbed and dissipated through the additional acoustic black hole vibration reduction structure, the effects of bearing the structure and isolating a part of vibration energy are achieved through the hexagonal honeycomb frame, and the vibration reduction and noise reduction effects can be improved.

According to the capacitance-enhanced circular isolator structure provided by the invention, common-ground electric connection is realized by forming a ground metal boss structure, the distance between a grounding metal and a multi-path impedance adding structure is remarkably reduced, the ground capacitance of the multi-path impedance adding structure is remarkably improved, and meanwhile, bandwidth expansion is realized through capacitance-inductance cooperative tuning; a second-order LC matching network is adopted in three radio frequency ports, a slotting part of a matching capacitor can enable a matching inductor and the matching capacitor to share space to a certain extent, so that the size of the matching network is effectively reduced, a first-order LC matching network is adopted in an absorption port, impedance matching of the absorption port is realized under the condition that only a single resistor is added, and the impedance matching performance of the absorption port is improved. The size of the matching network can be reduced while a good absorption effect is achieved, and the size of the non-reciprocal central junction structure can be reduced; in addition, the first non-reciprocal central junction structure and the second non-reciprocal central junction structure are subjected to conjugate matching by adopting an L-C-L type matching network, so that good isolation performance is realized.

One or more systems, devices, methods of use and / or methods of fabrication provided herein relate to a device that can facilitate qubit measurement with isolation imposed between a quantum processor and a respective qubit measurement circuit and / or which respective qubit measurement circuit can have a small footprint, such as within a respective cryogenic chamber of a quantum system. According to one embodiment, a device comprises an isolator circuit having a bandpass filter configuration coupled between a pair of ports and the bandpass filter configuration comprising two or more poles. Two or more shunt resonators can be realized as the two or more poles, wherein the two or more shunt resonators can comprise DC SQUIDs and can be coupled together with one or more admittance inverters. A non-reciprocal signal transmission can be generated between the two ports by RF pumping the DC SQUIDs.

The invention discloses a calibration device with a spectrum self-calibration function and a high-resolution spectrum calibration method thereof. The device comprises a narrow-band light source, a broadband light source, an optical fiber isolator, a coupler, an interference system, a multi-way switch, an FP (Fabry-Perot) cavity, a collimator, an orthogonal dispersion system and a computer, wherein the orthogonal dispersion system consists of a cylindrical lens, a reflector, a virtual phase array, a grating, a focusing lens and an industrial camera; according to the device, different light source paths are gated, FP cavity modulation and orthogonal dispersion system light splitting are utilized, and an industrial camera is combined to receive light signals. According to the method, the mapping relation between pixels and wavelengths can be established, the two-dimensional spectrum is compressed into the one-dimensional calibration spectrum through light intensity modulation and normalization processing, the calibration process of the orthogonal dispersion system is simplified, and the measurement precision is improved; and system drift can be compensated in real time through self-checking calibration, and the reliability of a measurement result is ensured, so that accurate calibration and measurement of a high-resolution spectrum can be realized.

The invention provides an anti-common-mode transient interference circuit, a receiving circuit and a digital isolator, and the anti-common-mode transient interference circuit comprises a demodulation module which is electrically connected with an isolation capacitor of a receiving end, and demodulates a received carrier signal, so as to output an intermediate digital signal; and the filtering module is electrically connected with the demodulation module and is used for removing noise caused by the common-mode transient event in the intermediate digital signal so as to output a target digital signal. According to the invention, the filtering module is additionally arranged to remove the noise caused by the common-mode transient event and carried in the intermediate digital signal, so as to obtain the clean target digital signal, reduce the influence of the common-mode transient event on other links in the circuit system, and facilitate the subsequent function module in the circuit system to process the target digital signal.

The embodiment of the invention discloses a light amplification device and a related system and method. The light amplification device comprises an optical fiber isolator, a pump light source, a beam combiner and an EYDF. A large amount of pump light in the EYDF cannot be completely absorbed by ytterbium ions, and ytterbium-band ASE light generated by the ytterbium ions can be further amplified by the pump light, so that effective amplification of signal light by the pump light is limited by the ytterbium-band ASE light. According to the embodiment of the invention, the optical fiber isolator in the light amplification device is modified, the optical fiber isolator can reflect the ytterbium-band ASE light as an auxiliary signal back to the EYDF, the excited amplification of the auxiliary signal and the absorption of the auxiliary signal by the EYDF can effectively inhibit the EYDF from generating the ytterbium-band ASE light, the self-oscillation and self-pulsation of the ytterbium-band ASE light are avoided, and the reliability of the light amplification device is improved. Therefore, the pumping conversion efficiency and the stability of the output power are improved. Meanwhile, the optical amplification device provided by the embodiment of the invention can effectively inhibit the EYDF from generating the ytterbium-band ASE light without adding an additional device, and is beneficial to reducing the cost and the power consumption.

The invention relates to the technical field of adjustable power dividers, in particular to an adjustable power divider matched with any port impedance, which comprises a transmission line structure power divider used for dividing an input signal into multiple paths for output; the input ends of the second impedance matching networks are connected with the output end of the transmission line structure power divider; wherein the second impedance matching network comprises an adjustable capacitor and an inductance element, and the second impedance matching network dynamically matches the impedances of different output ports by adjusting the capacitance value of the adjustable capacitor without changing the structural parameters of the transmission line. According to the adjustable power divider matched with the impedance of any port, the impedance matching networks which are formed by the adjustable capacitors and are connected in parallel are introduced into the output end of the power divider, real-time matching of different load impedances can be achieved only by adjusting capacitance values of the capacitors, a transmission line does not need to be redesigned or an isolator does not need to be additionally arranged, and the adjusting complexity is remarkably reduced.

The present invention provides a common-mode transient suppression protection circuit for a digital isolator, including a modulation circuit, a demodulation circuit and an isolation capacitor connected between the modulation circuit and the demodulation circuit. The modulation circuit includes a modulation circuit front-end and a drive circuit, which are connected in sequence, and a clamping module is arranged in the drive circuit. The protection circuit further includes a linear voltage regulator structure connected with the drive circuit, and a power supply clamp is arranged in the linear voltage regulator structure. By providing the linear voltage regulator structure having the power supply clamp and the drive circuit having the clamping module in the protection circuit, low-voltage devices in the drive circuit can be protected from being damaged by high-voltage signals generated by common-mode transient interference.

The invention discloses a method and a device for outputting large-energy picosecond pulse laser with external synchronization picosecond-level jitter. The device comprises a high-precision time sequence controller, a semiconductor picosecond pulse seed source, an optical isolator and a high-gain and high-stability regenerative amplifier. The semiconductor picosecond pulse seed source outputs low-energy picosecond-level (10-12J, pJ) and low-jitter picosecond-level (10-12s, ps) picosecond pulse seeds under the trigger of a time sequence controller of a high-precision external clock, the picosecond pulse seeds enter the high-gain high-stability regenerative amplifier through the optical isolator, and the high-gain high-stability regenerative amplifier outputs high-energy picosecond-level (10-12s, ps) picosecond pulse seeds under the control and adjustment of the high-precision time sequence controller. The picosecond pulse seed is locked to be regenerated and amplified in the regenerative amplifier, and the energy of the picosecond pulse seed with low energy and low jitter at a picofocus (pJ) level is amplified to uJ-mJ (10 <-6 > J-10 <-3 > J), so that low jitter and large energy output of laser pulses and trigger signals are realized, and application development of high-precision laser ranging, laser communication, time-frequency transmission and the like is effectively promoted.

An apparatus includes a transmitter, a voltage regulator, an isolator, and a test controller. The transmitter has an input, an output, and a first supply voltage terminal. The input couples to the apparatus' input terminal. The voltage regulator's input couples to a second supply voltage terminal. The voltage regulator's output couples to the first supply terminal. The first terminal of the isolator couples to the output of the transmitter. A first test controller terminal couples to the second supply voltage terminal. A second test controller terminal couples to the input terminal of the apparatus. The first control output couples to the control input of the voltage regulator. The test controller changes a logic state of a control signal at the first control output from a first logic state to a second logic state.

The invention discloses a high-tolerance synchronous dual-band pulse laser, and relates to the field of lasers, and the laser comprises a first resonant cavity and a second resonant cavity; the first resonant cavity comprises a first pumping source and an optical annular cavity formed by sequentially connecting a first wavelength division multiplexer, a first thulium-doped optical fiber, a first optical coupler, a first isolator, a second wavelength division multiplexer, a high-nonlinearity saturable absorber, a third wavelength division multiplexer and a first polarization controller; the second resonant cavity comprises a second pumping source and an optical annular cavity which is formed by sequentially connecting a fifth wavelength division multiplexer, a second erbium-doped fiber, a second optical coupler, a second wavelength division multiplexer, a high-nonlinearity saturable absorber, a third wavelength division multiplexer, an electric control adjustable delay line, a fourth wavelength division multiplexer, a second polarization controller and a second isolator, and the fifth wavelength division multiplexer, the second erbium-doped fiber, the second optical coupler, the high-nonlinearity saturable absorber, the third wavelength division multiplexer, the electric control adjustable delay line, the fourth wavelength division multiplexer, the second polarization controller and the second isolator; and the first optical coupler and the second optical coupler respectively output synchronization pulses in the wave bands of 2 microns and 1.5 microns. The device is compact in structure, low in manufacturing cost, convenient to operate and capable of covering the mid-infrared band of 2 microns.

A system includes an inverter including: a first galvanic isolator separating a primary voltage area from a secondary voltage area; a second galvanic isolator separating the primary voltage area from the secondary voltage area; a first bias network in the secondary voltage area, and connected to the first galvanic isolator; a second bias network in the secondary voltage area, and connected to the second galvanic isolator; a first amplifier in the secondary voltage area, and connected to the first bias network; a second amplifier in the secondary voltage area, and connected to the second bias network; and an open connection detector in the secondary voltage area, the open connection detector connected to the first amplifier and connected to the second amplifier, wherein the open connection detector includes one or more voltage-to-current converters.

The invention discloses a solving method for a micro-vibration transmission model of a flexible cable of a spatial magnetic suspension vibration isolator, and relates to the technical field of spatial vibration isolation. The method comprises the following steps: establishing a spatial magnetic suspension vibration isolator flexible cable micro-vibration transmission model based on central line telescopic deformation and cross section shear deformation; constructing a partial differential equation solving model based on the physical information neural network; constructing a loss function of a partial differential equation solving model by using the residual error, the residual error gradient, the initial condition and the boundary condition of the partial differential equation so as to train the partial differential equation solving model, and performing offline storage on the trained model; and then solving the micro-vibration transmission model of the flexible cable of the spatial magnetic suspension vibration isolator to obtain a solving result. According to the method, the accuracy of the flexible cable micro-vibration transmission model in the construction and solving process can be improved, support is provided for the design of vibration isolation compensation control, and then the problem of dynamic disturbance introduced by the flexible cable in a space magnetic suspension vibration isolation system is solved.

Methods and apparatus for a signal isolator that mitigates the effects of CMTI strikes. In embodiments, a first die comprises a transmit module and the first die has a first voltage domain; and a second die comprises a receive module including a receive amplifier configured to receive from the transmit module a transmit signal that includes a differential signal and a common mode current. The second die may have a second voltage domain with the first and second die being separated by an isolation barrier. In embodiment, the receive amplifier includes a differential amplifier to receive the differential input signal from the transmit module; and a common mode module configured to sense the common mode current and sink or source the common mode current and minimize changes to an input impedance of the receive amplifier.

Disclosed are an intelligent vibration isolator and a control method thereof. The intelligent vibration isolator includes a base, a vibration isolation mechanism disposed inside the base, and a controller; the base includes a bottom plate and a supporting sleeve disposed on the bottom plate; the vibration isolation mechanism includes a load platform, a supporting platform, a magnetorheological elastomer and an electromagnet which are sequentially and coaxially disposed from top to bottom; the vibration isolation mechanism is provided with at least three negative stiffness mechanisms that are uniformly distributed in a circumferential direction of the supporting platform; a strain detection device is disposed on an outer wall of the magnetorheological elastomer; and the controller adjusts and controls a magnitude of current of the electromagnet according to a received strain magnitude to control vertical stiffness of the isolator, and make the intelligent vibration isolator always be in a quasi-zero stiffness state.

The invention belongs to the technical field of optoelectronic devices, and provides a laser gyroscope frequency stabilization system and a frequency stabilization method thereof.The laser gyroscope frequency stabilization system comprises a large laser gyroscope to be subjected to frequency stabilization, an electro-optical modulator, an adjusting light path, a signal generator, a mode matching mirror set, a PID regulator, a frequency mixer, a photoelectric detector, an ultra-stable cavity, a low-pass filter, a computer and a data acquisition card; and a square transmission light path is arranged in the ultra-stable cavity. According to the invention, the problem of insufficient isolation caused by an optical isolator consisting of a polarization splitting prism and a 1 / 4 wave plate is effectively avoided, the influence of an optical feedback effect is reduced, and the optical isolator is better adapted to the field of high-precision measurement related to a large laser gyroscope.

In at least one embodiment, a method for operating a receiver includes configuring a receiver front-end circuit of the receiver according to a selected power consumption configuration. The method includes adjusting a quiescent current of a programmable flat gain stage coupled to the receiver front-end circuit according to the selected power consumption configuration to compensate for any gain loss of the receiver front-end circuit in the selected power consumption configuration. The selected power consumption configuration may be a reduced power consumption configuration and the programmable flat gain stage may be configured to at least partially compensate for the gain loss of the receiver front-end circuit in the reduced power consumption configuration.

The invention provides an electromagnetic quasi-zero stiffness vibration isolator and a control method, and belongs to the technical field of vibration isolation. The vibration isolator comprises a base, a positive stiffness mechanism, a negative stiffness mechanism, a positive and negative stiffness connecting mechanism and a dynamic control module. The positive stiffness mechanism adopts a hydraulic spring to provide basic positive stiffness; the negative stiffness mechanism comprises a plurality of stator units distributed on the base in an annular array and a rotor suspended in the center of a magnetic field of the stator units, and is used for generating nonlinear negative stiffness; the top end of the hydraulic spring supports a load through the bearing table and keeps a preset gap with the inner wall of the rotor; the positive and negative stiffness connecting mechanism realizes displacement transmission and cooperative adjustment; the dynamic control module comprises a displacement sensor and a controller, the sensor collects displacement signals, and the controller adjusts excitation currents of the stator units according to the signals and dynamically adjusts electromagnetic force, so that the vibration isolator is kept in a quasi-zero stiffness state. The quasi-zero stiffness state can be still kept when the load changes, load self-adaption low-frequency vibration isolation is achieved, and the system stability and the vibration isolation performance are improved.

The invention discloses an isolator circuit structure of a high-level inter-level isolation double-junction microstrip circulator, belongs to the field of microwave devices, and aims to shorten the length of an inductor and change the capacitance matched with the inductor, so that the plane size of a product can be effectively reduced; a three-section matching stub line interstage circuit structure design compensates the length of a connecting line between two loop junctions, so that the interstage isolation degree of the double-junction microstrip circulator isolator can be effectively improved; by combining the two designs, the interstage isolation degree of the double-junction microstrip circulator isolator is improved by more than 3dB under the condition that the size is not changed or reduced.

The invention relates to the technical field of floor vibration reduction, in particular to an adjustable vibration isolator capable of pre-pressing damping vibration isolation and an adjustable floor floating structure, and the adjustable vibration isolator comprises an outer elastic assembly, an inner elastic assembly, a connecting plate body, a fixed frame body, an adjusting screw tube and a fastening screw. The adjustable floor floating structure comprises a plurality of the adjustable vibration isolators, and further comprises a bearing plate and a ground isolation layer. The adjustable vibration isolator has the advantages that the excellent vibration isolation effect can be achieved in the vertical direction, the service life of related equipment can be prolonged, the efficient vibration reduction effect can be kept for a long time, high stability can be kept, and the excellent sound insulation, vibration isolation and damping performance can be achieved; the adjustable floorslab floating structure can obtain all the advantages brought by the adjustable vibration isolator, the vibration reduction strength can be adjusted according to actual requirements, and therefore the situation that the follow-up using performance is affected by design, construction and manufacturers can be avoided, and the excellent sound insulation, vibration isolation and vibration elimination performance can be brought into play.

A universal pressure instrument connecting device belongs to the technical field of pressure instruments and comprises a concentric-square-shaped block, a mounting assembly, a rotating assembly, a connecting assembly and a bottom plate, a filter pipe is arranged on the bottom plate and connected with a connecting port through an oil-water isolator, the connecting port is connected with an air source, and the connecting assembly is arranged on the bottom plate and connected with the concentric-square-shaped block through the rotating assembly. An installation assembly is arranged on the concentric-square-shaped block and connected with a pressure instrument, and a supporting base is arranged at the bottom of the bottom plate. By adding the mounting assembly, the pressure gauges which can be adjusted and matched in the radial direction and the longitudinal direction are added, the pressure gauges are simply and conveniently inserted into the mounting assembly, the mounting convenience is improved, by adding the rotating assembly, the direction of the pressure gauges can be adjusted, the pressure leakage problem is avoided, the stability is improved, and the practicability is high. The angle is conveniently adjusted; the applicability is improved.

Disclosed in the present application is a plate-shaped structure with vibration damping and limiting functions. The plate-shaped structure comprises an upper plate, a lower plate, phononic crystal vibration-damping cell elements, diagonally tensioned friction-damping cell elements and C-type limiting cell elements, wherein the phononic crystal vibration-damping cell elements and the diagonally tensioned friction-damping cell elements are disposed between the upper plate and the lower plate and are periodically arranged at intervals; and the C-type limiting cell elements are distributed at four corners of the plate-shaped structure. The present application has an ingenious design, and arranging the phononic crystal vibration-damping cell elements and the diagonally tensioned friction-damping cell elements between the upper plate and the lower plate to form a periodically arranged array, and arranging the C-shaped limiting cell elements at the four corners of the plate-shaped structure greatly reduce the mounting space for an electronic device and a vibration control apparatus, and solve the current problems of vibration isolators for electronic devices, i.e., poor vibration-damping and impact-resistant effects and a large displacement during operation.

The invention discloses a quasi-zero stiffness vibration isolator based on coupling of an inerter and a connecting rod and a parameter design method, and belongs to the technical field of vibration isolators. The quasi-zero stiffness vibration isolator comprises a connecting rod structure, a spring assembly, an inerter, a vibration isolation plate and a mounting base, the connecting rod structure comprises four connecting rods with the same length; the spring assembly comprises a connecting spring and two supporting springs; the rod pieces AB, AC, A 'B' and A 'C' are connected through hinge joints; two ends of AA'are connected with the inerter through connecting springs which are horizontally arranged in parallel; two ends of CC'are fixed on the mounting base, and two ends of BB 'are fixedly hinged on the vibration isolation plate; the BC end and the B 'C' end are connected through a vertical supporting spring; the supporting spring provides positive rigidity in the vertical direction, the connecting spring provides negative rigidity, and the inertial container amplifies the equivalent mass of the vibration isolation target through inertia so as to reduce the resonance frequency. The vibration isolator achieves low force transmissibility and displacement transmissibility under low-frequency excitation, and the adaptability and stability of the vibration isolator are enhanced.

The invention discloses a method for eliminating interference of isolator chip radiation on a radio frequency system, which can measure the frequency of a low-frequency RC oscillator in a chip wafer test stage or a packaged finished product test stage, flexibly burn a corresponding frequency control signal of a storage unit according to the requirement of a client product communication system, and improve the reliability of the radio frequency system. Therefore, the local frequency and the harmonic frequency of the isolator chip are adjusted, so that the isolator chip can avoid the communication frequency band of a client. According to the method, a low-temperature-drift RC oscillation circuit is combined with a frequency-locked loop technology, and it is guaranteed that the frequency deviation of a local oscillation signal is controlled within 3% in different process deviations and a full-temperature range. Besides, the frequency of the high-frequency oscillator is accurately adjusted until the frequency is close to the target frequency, and the configuration parameters are stored in the nonvolatile storage module, so that the isolator chip does not interfere with other communication systems in the actual working process, and the stability and the reliability of the whole communication system are improved.