52 results about "Resonator filter" patented technology

The invention discloses a multi-resonator filter collaborative optimization method and system based on cloud computing, particularly relates to the field of cloud computing task processing, is used for solving the problem of resource scheduling resources, and can realize intelligent grouping of tasks in a task input stage through a dynamic density clustering method. A dynamic weight coefficient is calculated in combination with the data association degree and the resource conflict probability, so that priority division of tasks is completed before scheduling, and the accuracy of scheduling decision making is improved; a capacity expansion threshold is adjusted in combination with a historical load trend prediction model and a dynamic weight, and a resource capacity expansion strategy based on benefit driving is realized, so that the energy consumption of the system is reduced, and meanwhile, resource expansion is ensured to accurately match actual requirements; task subblock disassembly and a greedy distribution strategy are carried out based on the real-time energy efficiency ratio and the network topology cost, so that the calculation load tends to the optimal node distribution all the time, the calculation throughput is improved, and the delay loss of cross-node data transmission is reduced.

A radio frequency front-end module includes an antenna switch module and a receive path including a low-noise amplifier and a receive filter. The receive filter is connected between a port of the antenna switch module and the low-noise amplifier. A first transmit path includes a power amplifier, a transmit filter, and an inductive coupled resonator. The inductive coupled resonator is connected between the transmit filter and the port of the antenna switch module. The transmit filter is connected between the inductive coupled resonator and the power amplifier.

An acoustic wave device includes an acoustic wave resonator and a longitudinally coupled acoustic wave resonator filter, in which the longitudinally coupled acoustic wave resonator filter is shorter than the acoustic wave resonator in terms of a length of first and second edge regions that is a dimension along an extending direction of electrode fingers of the first and second edge regions in an IDT electrode.

An ESA antenna includes a layer of filters between the layer of radiating elements and the ground layer. The filter layer obviates certain post processing steps. The filters define a passband at the operating range of the antenna and a stopband defined to prevent crosstalk or reduce known external interference. Each filter includes alternating cells of a resonator cell formed by two split ring resonators and a resonator cell formed by a complementary split ring resonator and a complementary patch / stub. A particular implementation of the filter defines an operating range around 23 gigahertz with a passband to stopband transition of less than 500 megahertz. Vias may connect the filter layer to a surface component layer with beamforming integrated circuits, bypassing the routing layer.

One example includes an acoustic resonator filter system. The system includes a filter element arranged between a low-voltage rail and a filter-path node through which an RF input signal propagates to provide a filtered RF output signal. The filter element includes an acoustic resonator and a capacitive network arranged in parallel with the acoustic resonator.

A short-circuit rectangular metal patch and a dielectric slot act on a cavity-backed substrate integrated dielectric resonator, and by utilizing a newly-added mode of the short-circuit rectangular metal patch and a matching effect of the short-circuit rectangular metal patch and the dielectric slot on a slot mode and an adjusting effect of the short-circuit rectangular metal patch and the dielectric slot on amplitude distribution of an electric field of four modes, the broadband stable beam broadening dielectric resonator filtering antenna is obtained. By combining a low-frequency out-of-band radiation zero point generated by the whole resonator and a high-frequency out-of-band wave limiting effect of the U-shaped groove, the broadband wide-beam dielectric resonator antenna is realized, and the broadband wide-beam dielectric resonator antenna has the advantages of broadband stable beam broadening and integration of a filtering function, and can simultaneously take substrate integration and low profile into account.

A bulk acoustic resonator filter includes a series part including at least one series acoustic resonator electrically connected between a first and second radio frequency ports; and shunt acoustic resonators electrically connected to each other in series between a first node of the series part and a first ground port, wherein each of the shunt acoustic resonators comprises a resonance portion including a first electrode, a piezoelectric layer, and a second electrode; and an overlap region in which the first electrode, the piezoelectric layer, and the second electrode overlap, the overlap region has an aspect ratio equal to a ratio between a longest length of the overlap region in an extension direction of a longest side of the overlap region and a longest length of the overlap region in a direction perpendicular to the extension direction, and the aspect ratios of the shunt acoustic resonators include different aspect ratios.

The application discloses a manufacturing method of a resonant filter. The method comprises the following steps: manufacturing a first substrate and a resonant filter structure, wherein the resonant filter structure is formed on a first side of the first substrate, the resonant filter structure comprises a bulk acoustic wave resonant structure and a Lamb wave resonant structure, the bulk acoustic wave resonant structure and the Lamb wave resonant structure are electrically connected, the bulk acoustic wave resonant structure comprises a first electrode structure, the Lamb wave resonant structure comprises a second electrode structure, the second electrode structure comprises a first interdigital electrode and a second interdigital electrode, the first electrode structure and the second electrode structure share a same first electrode layer, the first interdigital electrode is electrically connected with the outside, and the second interdigital electrode is electrically connected with the first electrode structure.

The present invention relates to the field of wireless communication technologies, and provides a microstrip dual-path coupled resonator filter. The microstrip dual-path coupled resonator filter includes a metal layer, a silicon substrate stacked on the metal layer, and a filter structure stacked on the silicon substrate; the filter structure passes through the silicon substrate and is electrically connected to the metal layer; the filter structure includes two microstrip transmission lines stacked and fixed on the silicon substrate and oppositely arranged along a first direction, two open-circuit microstrip resonators, a short-circuit resonator, and a tightly coupled feeding structure; the two microstrip transmission lines and the two open-circuit microstrip resonators are arranged in an interleaved manner, and the open-circuit microstrip resonators and the short-circuit resonator are spaced from the two microstrip transmission lines respectively; each microstrip transmission line is configured with two tightly coupled feeding structures, and the other ends of the two tightly coupled feeding structures are respectively connected to the two open-circuit microstrip resonators. The microstrip dual-path coupled resonator filter of the present invention has high integration and reliability.

A coupled resonator filter including a first parallel resonator including a first capacitance connected in parallel with a first inductance. The filter includes a second parallel resonator including a second capacitance connected in parallel with a second inductance and a third parallel resonator including a third capacitance connected in parallel with a third inductance. Magnetic coupling between the first inductance and the second inductance, between the second inductance and the third inductance, and between the first inductance the third inductance occurs in accordance with first, second and third coupling factors, respectively. A frequency response of the coupled resonator filter includes a notch when values of the first coupling factor, the second coupling factor and the third coupling factor satisfy predetermined conditions.

The present invention discloses a high-voltage DC circuit topology. In the high-voltage DC circuit topology, the positive pole of the DC power supply DC is connected to the positive terminal of the bus capacitor C0 via the diode D1, and the negative pole is connected to the negative terminal of the bus capacitor C0; the positive terminal of the bus capacitor C0 is connected to the common drain of the fault current limiting unit and the full-bridge circuit, and the negative terminal is connected to the common source of the full-bridge circuit to form a radio frequency oscillator. The primary winding of the radio frequency transformer T1 is connected in parallel with the tuning capacitor C2. The radio frequency feed electrode a is connected to the a end of the first secondary winding of the radio frequency transformer, and the radio frequency feed electrode b is connected to the b end of the second secondary winding of the radio frequency transformer. A voltage multiplier is placed between the radio frequency feed electrode a and the radio frequency feed electrode b to achieve voltage superposition. The voltage multiplier is composed of a cascade of multiple radio frequency energy coupling electrodes and radio frequency rectifiers. One end of the parallel resonance filter is connected to the last-stage radio frequency energy coupling electrode of the voltage multiplier, and the other end is connected to the load to achieve a DC voltage with low ripple on the load.

The invention discloses a filter and an electronic device, and belongs to the technical field of semiconductors. The filter comprises a plurality of filter elements which are connected in series and / or in parallel, each filter element comprises a transducer, the plurality of filter elements comprise at least one longitudinal coupling resonant filter, and the longitudinal coupling resonant filter comprises a plurality of transducers; and the duty ratios of the plurality of transducers of the longitudinal coupling resonant filter are different. According to the invention, the Rayleigh mode and the near-end high-frequency clutter mode of the filter can be suppressed, and the overall performance of the filter is improved.

The invention discloses a high-precision wide-tuning hybrid integrated external cavity semiconductor laser and a tuning method, the high-precision wide-tuning hybrid integrated external cavity semiconductor laser comprises a semiconductor optical amplifier (1), a SiO2 expansion chip (2) and a computer (3), a silicon-based annular resonant filter (02) is integrated on the SiO2 expansion chip (2), the silicon-based annular resonant filter (02) comprises a first micro-ring resonator (001) and a second micro-ring resonator (002), and the first micro-ring resonator (001) and the second micro-ring resonator (002) are integrated on the computer (3). The first micro-ring resonator (001) and the second micro-ring resonator (002) are connected in series, and the waveguide refractive index is adjusted by utilizing a waveguide thermo-optic effect, so that'coarse 'tuning of the wavelength is realized, and a wide wavelength tuning range is obtained; and a phase shifter (04) is integrated on the SiO2 extended chip (2) and is used for finely tuning the cavity length to realize fine tuning of the wavelength. According to the invention, the micro spectrometer is integrated on the SiO2 expansion chip, the wavelength information is fed back, and the high wavelength tuning precision is obtained.

The present application discloses a resonant filter and a method for manufacturing the same. The resonant filter includes: a first substrate; and a resonant filter structure formed on a first side of the first substrate, wherein the resonant filter structure includes a bulk acoustic wave resonant structure and a Lamb wave resonant structure, and the bulk acoustic wave resonant structure and the Lamb wave resonant structure are electrically connected. The bulk acoustic wave resonant structure includes a first electrode structure, and the Lamb wave resonant structure includes a second electrode structure, wherein the first electrode structure and the second electrode structure share the same first electrode layer; alternatively, the bulk acoustic wave resonant structure and the Lamb wave resonant structure share the same piezoelectric layer.

The invention relates to the technical field of circuits, in particular to a resonator filter structure, a preparation method and a filter. The resonator filter structure comprises a substrate and a circuit structure integrated on one side of the substrate, the substrate comprises a resonator region and a capacitor region; the resonator area is provided with a resonator circuit structure, and the capacitor area is provided with a capacitor structure; the acoustic mirror in the resonator circuit structure and the capacitor dielectric layer of the capacitor structure are both air and are formed through the same sacrificial layer deposition and release process.

A coupled resonator filter includes a first parallel resonator (620) including a first capacitance (C1) connected in parallel with a first inductance (L1). The filter includes a second parallel resonator (622) including a second capacitance (C2) connected in parallel with the second inductance (L2), and a third parallel resonator (624) including a third capacitance (C3) connected in parallel with the third inductance (L3). Magnetic coupling between the first inductor and the second inductor, between the second inductor and the third inductor, and between the first inductor and the third inductor occurs according to a first coupling factor (k12), a second coupling factor (k23), and a third coupling factor (k13), respectively. When the values of the first coupling factor, the second coupling factor and the third coupling factor satisfy a predetermined condition, the frequency response of the coupled resonator filter comprises a notch such that signal cancellation for a direct coupling path occurs via a cross coupling path of the first coupling (k12) and the second coupling (k23) and via the third coupling (k13).

Systems and methods for impedance shifting between a filter and an amplifier are disclosed. In one aspect, an active inductor, which may otherwise be placed between a filter and a low noise amplifier (LNA), may be replaced with a passive impedance enhancement circuit. The impedance enhancement circuit may be, for example, a passive voltage gain circuit, and, as another example, may be implemented with a coupled resonator filter (CRF) structure. The use of such a passive voltage gain structure in a receive circuit whose input noise is primarily determined by the noise voltage component means that any passive voltage gain prior to the active amplifier will result in a reduction in the overall receive path noise index, and may potentially save the space that would otherwise be dedicated to large inductor circuits.

Hybrid lattice filters with acoustic baluns are disclosed. In one aspect, a hybrid lattice filter may be formed using acoustic elements. The hybrid lattice filter may operate with acoustic baluns such as coupled resonator filters (CRF) or stacked crystal filters (SCF). To achieve the desired common mode rejection, an additional rejection or low common mode intermediate impedance network may be supplied between the acoustic balun and the hybrid lattice filter. By combining the acoustic balun with the low common-mode intermediate impedance network and the hybrid lattice filter, a passband filter with a desired bandwidth may be created.

One example includes an acoustic resonator filter system. The system includes a plurality of filter blocks. Each of the filter blocks can include a plurality of tunable filter elements. Each of the tunable filter elements can include an acoustic resonator. The system also includes a switching network that receives a radio frequency (RF) input signal and provides a filtered RF output signal. The switching network can be configured to selectively switch at least one of the filter blocks in a signal path of the RF input signal to provide the RF output signal.

The invention discloses a filter network based on external active group delay regulation and control equalization, which comprises a fourth-order microstrip split ring resonator filter network to be subjected to phase calibration, a 3dB bridge, two single-port reflection type split ring resonators and two active feedback amplification loops, the output end of the fourth-order microstrip split-ring resonator filter network is coupled with one port of the 3dB bridge, ports of the two single-port reflection-type split-ring resonators are connected with the other two ports of the 3dB bridge respectively, and the last port of the 3dB bridge serves as a microstrip output port. The two active feedback amplification loops and the two single-port reflection type split ring resonators are in one-to-one correspondence and weak coupling. According to the method, the working characteristics of the single-port reflection type split ring resonator are utilized, the group delay characteristic of the resonator acts on the to-be-calibrated filter network when the resonator resonates, the group delay characteristic of the resonator is superposed with the group delay characteristic of the to-be-calibrated filter network, and then the linear phase filter network with flat group delay is obtained; and meanwhile, an active feedback amplification loop is utilized, a reflected signal acts on the filter circuit through a single-ended split-ring resonator and a 3dB bridge, and the loss of the to-be-calibrated and regulated filter network is compensated, so that the overall transmission performance of the filter network is improved.

A coupled resonator filter including a first parallel resonator including a first capacitance connected in parallel with a first inductance. The filter includes a second parallel resonator including a second capacitance connected in parallel with a second inductance and a third parallel resonator including a third capacitance connected in parallel with a third inductance. Magnetic coupling between the first inductance and the second inductance, between the second inductance and the third inductance, and between the first inductance the third inductance occurs in accordance with first, second and third coupling factors, respectively. A frequency response of the coupled resonator filter includes a notch when values of the first coupling factor, the second coupling factor and the third coupling factor satisfy predetermined conditions.

The present invention relates to a fault signal detection system of target equipment using a resonance filter, which can precisely detect a fault signal of a coil in the target equipment regardless of frequency resolution, and can greatly improve a signal-to-noise ratio. To this end, provided is a detection device which detects a fault signal that may occur in a target coil (30) of the target equipment, comprising: a tuning capacitor (150) which is connected in series between a coil power source (120) and a coil inductor (160) with respect to a coil power source (120), the coil inductor (160), and a coil resistor (180) of the target coil (30), and is capable of tuning a frequency of the resonance filter; and a matching capacitor (140) which is connected to the coil power source (120) in parallel and can be matched with the frequency of the resonance filter, and thereby, a signal-to-noise ratio (SNR) may be further increased when the fault signal in the frequency domain passes through the resonance filter.

Structures for a micro-ring resonator filter and methods of forming a structure for a micro-ring resonator filter. The structure comprises a bus-ring coupling section including a first Mach-Zehnder interferometer, and a micro-ring resonator section including a ring resonator coupled to the first Mach-Zehnder interferometer. The ring resonator includes a second Mach-Zehnder interferometer.

The application discloses a parameter optimization method of a W-waveband wideband low standing wave ratio resonant filter network and relates to the field of resonant filter parameter optimization. The application adopts a variation method to optimize design variables, and utilizes the influence of the partial derivative of an objective function on design parameters to realize a more efficient optimization process, thereby reducing the standing wave ratio and the insertion loss.

A bulk acoustic wave resonator filter is provided. The bulk acoustic wave resonator filter includes: a series bulk acoustic wave resonator electrically connected in series between a first port and a second port through which a radio frequency signal passes; a second shunt bulk acoustic wave resonator electrically connected in shunt between the series bulk acoustic wave resonator and a ground, and having a resonant frequency lower than a resonant frequency of the series bulk acoustic wave resonator; and a first shunt bulk acoustic wave resonator electrically connected in shunt to the second shunt bulk acoustic wave resonator and having a resonant frequency higher than the resonant frequency of the second shunt bulk acoustic wave resonator. One or both of the series bulk acoustic wave resonator and the first shunt bulk acoustic wave resonator includes: a first electrode disposed above a substrate; a piezoelectric layer disposed on an upper surface of the first electrode; a second electrode disposed on an upper surface of the piezoelectric layer; and a trench formed in or above the second electrode and recessed downward.

The application discloses an energy generator topology and a control method thereof, and belongs to the field of energy generator design. The energy generator topology comprises an adjustable DC power supply, an input capacitor, an H-bridge circuit, a resonance filter, a current sampling transformer and a controller. The adjustable DC power supply outputs electric energy to an external bipolar plasma knife through the input capacitor, the H-bridge circuit and the resonance filter. The current sampling transformer collects the current value of the resonance filter output to the bipolar plasma knife in real time and outputs the current value to the controller. The controller receives the current value and determines the load state of the bipolar plasma knife. According to the load state, the working frequency of the switching device of the H-bridge circuit is controlled, so that the energy generator provides adaptive electric energy output for the bipolar plasma knife. The application can reduce the high current stress and thermal stress impact of high peak power on the energy generator, thereby greatly reducing the volume of the energy generator.

One example includes an acoustic resonator filter bank system. The system includes a multiplex passive filter that is configured to provide a plurality of filtered versions of a radio frequency (RF) input signal. The system also includes a filter bank that comprises a plurality of filter blocks that are each configured to provide a plurality of pass-bands across a frequency spectrum. Each of the filter blocks includes an acoustic resonator. The system further includes a switch matrix that is configured to provide one of the filtered versions of the RF input signal to one of the filter blocks in the filter bank to provide an RF output signal having a frequency band corresponding to a respective one of the pass-bands.

The utility model discloses a surface acoustic wave filter with a built-in inductor, which belongs to the technical field of surface acoustic wave filters, comprises a piezoelectric substrate, and is characterized in that one end of a coupling resonant filter is connected with a signal input terminal, and the other end of the coupling resonant filter is connected with one end of a third surface acoustic wave resonator; the other end of the third surface acoustic wave resonator is connected with the signal output terminal, the first surface acoustic wave resonator and the first inductor are connected between the signal input terminal and the coupling resonant filter in parallel, one end of the first surface acoustic wave resonator is connected with the signal input terminal, and the other end of the first surface acoustic wave resonator is connected with the ground potential. One end of the first inductor is connected with the signal input terminal, and the other end is connected with a ground potential. Compared with the prior art, the bandwidth of the surface acoustic wave filter is expanded.

A galvanometer motor control method based on resonant filtering and a Luneburg observer, relating to the field of motor control, is disclosed. The drive control system of the galvanometer motor includes a position PI controller, a resonant filter, a speed PI controller, a current PI controller, and a DA conversion drive circuit connected in sequence, and a Luneburg observer positioned between the resonant filter and the speed PI controller. The method includes the following steps: the position PI controller processes position-related information; the resonant filter performs resonant filtering on the parameters output by the position PI controller; the Luneburg observer introduces an observation gain matrix to stabilize itself and estimates the speed; and the speed PI controller processes the speed estimate to generate the voltage controlling the galvanometer motor. This invention employs coordinated control of position, speed, resonant filter, Luneburg observer, and current, enhancing the system's dynamic performance, reducing inter-loop coupling effects, and improving control accuracy.

The utility model relates to a radio frequency filter and communication equipment, and the radio frequency filter comprises a first signal transmission end, a second signal transmission end, a filter network, a coupled resonator filter, and a suppression lifting unit. The filter network is arranged between the first signal transmission end and the second signal transmission end and comprises a plurality of series branches and at least one parallel branch; each series branch comprises at least one series surface acoustic wave resonator, and each parallel branch comprises at least one parallel surface acoustic wave resonator; the coupling resonant filter is arranged between the series branch closest to the second signal transmission end and the second signal transmission end; and a suppression lifting unit is connected between the second signal transmission end and the ground so as to generate a zero point on the high-frequency side of the pass band of the radio frequency filter.