327results about "Impedence matching networks" patented technology

The invention provides a self-adaptive impedance matching method and system of a microwave frequency band. The method comprises the following steps: performing initial impedance measurement on a plurality of microwave component ports to obtain a complex impedance parameter as a matching reference; in the operation process, a current impedance state and a reflection coefficient are collected through a reflection monitoring mechanism, and a dynamic impedance state vector is constructed; inputting the state information into an adaptive algorithm module, generating a matching parameter vector and configuring an adjustable device to realize real-time adjustment of a matching network; calculating a matching error according to the current reflection state and a target reference value, and driving parameters to be iteratively updated; after the matching precision requirement is met, the final parameters are loaded to the controller to complete actual configuration; meanwhile, the system periodically collects environmental parameters and matching effects, and dynamically judges whether rematching is needed or not so as to maintain long-term stable operation of the system. The method has the capabilities of automatic sensing, closed-loop optimization and environmental change adaptation, and can improve the matching efficiency and signal transmission quality of a microwave system under multi-band and high-dynamic working conditions.

The invention discloses a frequency division control radio frequency power supply solid-state impedance matcher and a method thereof, and aims to solve the problems that a traditional mechanical impedance matcher is slow in response, low in adjustment precision and difficult to adapt to a dynamic load. According to the system, an all-solid-state impedance matcher is adopted, impedance dynamic adjustment is achieved through a matching network composed of an adjustable inductance module and a switched capacitor module, closed-loop control is constructed in combination with a radio frequency signal detection module and a digital signal processor, and a frequency division control strategy is adopted, and the high-frequency band realizes high-precision matching through a control strategy of coarse adjustment of the adjustable inductance module and fine adjustment of the switched capacitor module. The device has the advantages of high response speed, wide frequency band coverage and the like, and is particularly suitable for industrial plasma application scenes with remarkable dynamic impedance characteristics.

The invention discloses a dual-compensation active common-mode EMI filter based on impedance mismatch and a design method thereof, and belongs to the technical field of filter design, the dual-compensation active common-mode EMI filter is connected between an interfered end and an interference source end, the dual-compensation active common-mode EMI filter comprises a voltage sampling circuit, a signal amplification circuit and a compensation circuit, the compensation circuit comprises a voltage injection module and a current injection module, the first end of the voltage injection module is connected with the first end of the voltage sampling circuit, the second end is connected with the second end of the signal amplification circuit, and the third end is connected with the first end of the interference source end; the first end of the current injection module is connected with the second end of the signal amplification circuit, the second end is connected with the third end of the voltage injection module, and the third end is connected with the second end of the interference source end. According to the invention, the insertion loss of the filter can be significantly improved, the filter has an effective bandwidth enough to cover and conduct electromagnetic interference, has better attenuation on full-band noise signals, and has the advantages of small size and high insertion loss.

An electronic component is provided that includes a substrate, an insulator layer expanding over a surface of the substrate, a planar conductor on the substrate or in the insulator layer and expanding in a plane parallel to the surface of the substrate, and an inductor conductor pattern on the insulator layer or in the insulator layer. When viewed in a direction perpendicular to the surface of the substrate, a length in a longitudinal direction of a region in which a region with the inductor conductor pattern overlapping the planar conductor is represented by Ls, and a distance between the inductor conductor pattern and the planar conductor is represented by d, such that Ls / d is 1 or more and 60 or less.

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.

An impedance matching circuit includes a radiofrequency terminal and a series circuit connected to the radiofrequency terminal, wherein the series circuit comprises at least one reactance and at least one switching element having a drive input. A drive circuit is connected to the drive input and a coupler is connected to the drive circuit so as to an enable signal input. The impedance matching circuit enables short switching times and low losses in the at least one switching element.

The utility model provides an equalizer adjustable circuit, an amplifier adjustable circuit and electronic equipment, and belongs to the technical field of equalizers. And the cross negative impedance module is used for compensating the input signal through negative impedance. And the adjustable current module is connected with the cross negative impedance module. And the adjustable current module is used for providing adjustable bias current for the cross negative impedance module so as to adjust the negative impedance generated by the cross negative impedance module through the adjustable bias current. By adjusting the current of the adjustable current module, the bias current of the cross negative impedance module can be adjusted, and then the negative impedance generated by the cross negative impedance module can be adjusted, so that the loss of the circuit and the frequency response characteristic can be optimized in bandwidth, gain, peak point and peak amplitude; the technical problem that a traditional equalizer circuit cannot adjust the circuit gain is solved, so that the circuit can achieve the equalization effect, and input signals are compensated and equalized.

The invention discloses a high-speed serial signal linear equalization circuit which comprises an input terminal, a continuous time linear equalizer (CTLE), a super source follower, a variable gain amplifier (VGA) and an adaptive feedback. The input end is connected with a 100-ohm internal resistance differential signal source of the transmitting end through a channel; the equalization circuit CTLE is connected to the output end of the input end connection module, two groups of resistance switches (RsMF and RsHF) of the CTLE module are respectively controlled by 4-bit binary codes to enable source degeneration resistors Rs of two stages of CTLEs to be variable, two groups of capacitance switches (CsMF and CsHF) are respectively controlled by 2-bit binary codes to enable source degeneration capacitors Cs of the two stages of CTLEs to be variable, and the two groups of capacitance switches (CsMF and CsHF) are respectively controlled by 2-bit binary codes to enable source degeneration capacitors Cs of the two stages of CTLEs to be variable. The change of a zero pole of the circuit is realized through the change of the source degeneration resistor Rs and the source degeneration capacitor Cs, and the adjustability of the difference between the high-frequency gain and the low-frequency gain of the circuit is realized, so that the multi-gear adjustability of the equalization capability is realized.

The embodiment of the invention provides a radio frequency power supply and semiconductor process equipment, and the power supply comprises a power supply voltage control sub-module which is connected with a switching power supply module and is used for controlling the DC output voltage of the switching power supply module; the radio frequency control sub-module is connected with the radio frequency module and is used for controlling the power and the frequency of the radio frequency signal output by the radio frequency module; the power sampling sub-module is used for being connected with the radio frequency module and collecting a power feedback value of a radio frequency signal output by the radio frequency module; and the processor sub-module is connected with the power supply voltage control sub-module, the radio frequency control sub-module and the power sampling sub-module, and is used for outputting a control signal to the power supply voltage control sub-module and the radio frequency control sub-module based on the power feedback value and the frequency of the radio frequency signal, so that the radio frequency module outputs the required radio frequency signal. The embodiment of the invention can improve the output efficiency of the radio frequency module.

A communication circuit includes a termination circuit with multiple termination blocks where the termination circuit is coupled to a die terminal for conveying a signal. Each termination block includes a resistive circuit and a switch for selectively implementing the resistance of the resistive circuit in the termination resistance of the communication circuit. Each block includes a string of one or more diodes coupled to the resistive circuit and to the selection switch. The string of one or more diodes is nonconductive during normal operation and is conductive during an ESD event affecting the die terminal to discharge the ESD current to a supply voltage terminal when the selection switch is nonconductive.

A communication circuit includes a termination circuit with multiple termination blocks where the termination circuit is coupled to a die terminal for conveying a signal. Each termination block includes a resistive circuit and a switch for selectively implementing the resistance of the resistive circuit in the termination resistance of the communication circuit. Each block includes a string of one or more diodes coupled to the resistive circuit and to the selection switch. The string of one or more diodes is nonconductive during normal operation and is conductive during an ESD event affecting the die terminal to discharge the ESD current to a supply voltage terminal when the selection switch is nonconductive.

The invention discloses a TSV-based tunable inductor structure and a tuning method thereof, the tunable inductor structure comprises a primary side inductor and an auxiliary inductor, the primary side inductor is nested in the auxiliary inductor to form a nested tunable inductor structure; wherein the auxiliary inductor is connected with the modulation source, and the primary inductor is connected with an actual application circuit, so that a voltage difference between a voltage V1 between two ports of the primary inductor and a voltage V2 between two ports of the auxiliary inductor is regulated and controlled through the modulation source, and the primary inductor and the auxiliary inductor are mutually coupled under the action of the voltage V1 and the voltage V2; and the inductance tuning of the primary side inductor is realized. According to the TSV tunable inductor, the TSV tunable inductor structure which is small in tuning range, large in area and high-frequency performance degradation of a traditional tunable inductor is converted into a TSV tunable inductor structure which is based on the magnetic coupling technology, is small in area and wide in tuning range and can be continuously tuned.

The invention relates to the technical field of impedance matching, and discloses an impedance matching method and device, external line gateway equipment, a storage medium and a computer program product, the method is applied to the external line gateway equipment, the external line gateway equipment is connected with a telephone network for use, and the method comprises the following steps: sending a multi-frequency detection signal to the telephone network based on a preset period, echo signal attributes corresponding to the collected echo signals are obtained; feature extraction is carried out according to the echo signal attribute to obtain a feature vector, the normalized feature vector is input into a preset neural network prediction model to obtain a prediction impedance value, and the preset neural network prediction model is obtained by training the sample impedance value and the sample feature vector; and obtaining a target impedance value based on a preset smooth transition algorithm and the predicted impedance value, and performing impedance matching according to the target impedance value. Since the corresponding target impedance value is generated in real time for impedance matching, the equipment can adapt to different telephone network line characteristics for impedance matching.

Various embodiments of a wireless connector system are described. The system has a transmitter module and a receiver module that are configured to wirelessly transmit electrical energy and / or data via near field magnetic coupling. The wireless connector system is designed to increase the amount of wirelessly transmitted electrical power over a greater separation distance. The system is configured with various sensing circuits that alert the system to the presence of the receiver module to begin transfer of electrical power as well as undesirable objects and increased temperature that could interfere with the operation of the system. The wireless connector system is a relatively small footprint that is designed to be surface mounted.

The invention relates to the technical field of wireless communication, and provides a power synthesis circuit and a power amplifier. Comprising a first signal input end, a second signal input end, an input impedance matching circuit, a first harmonic suppression circuit, a second harmonic suppression circuit, a first high-pass filter circuit, a second high-pass filter circuit, a low-pass filter circuit and a signal synthesis output end, the low-pass filter circuit comprises a first inductor, a second inductor and a first capacitor; the first end of the first inductor serves as the first input end of the low-pass filter circuit, the first end of the second inductor serves as the second input end of the low-pass filter circuit, the second end of the first inductor is connected with the first end of the first capacitor and the second end of the second inductor and serves as the output end of the low-pass filter circuit, and the second end of the first capacitor is grounded. The power synthesis circuit has the impedance conversion characteristic, and has the advantages of low cost, high isolation, high integration and the like.

An electronic device may include wireless circuitry having a first circuit, a second circuit, and an impedance matching network coupled between the first and second circuits. The impedance matching network can include a transformer having a primary coil and a secondary coil and a first feedforward resistor having a first terminal coupled to the primary coil and having a second terminal coupled to the secondary coil. The impedance matching network can further include a second feedforward resistor coupled between the primary coil and the secondary coil. The first and second feedforward resistors can be configured to provide a flat passband gain response for the impedance matching network.

The invention discloses a multi-mode ultra-wideband continuously adjustable microwave power amplifier circuit, and belongs to the technical field of microwave integrated circuits. Switching between the ultra wide band and multiple communication frequency bands can be realized by adjusting the control voltage and the drain electrode power supply circuit of the pre-stage circuit, and the center frequency of the communication frequency bands can be independently designed. And the center frequency of the communication frequency band can be changed by changing the values of the capacitor and the inductor in the continuous adjustable branch knot and the inductor in the drain power supply circuit of the pre-stage circuit. Through on-chip voltage and external voltage switching control, mode switching of the ultra wide band and multiple communication frequency bands can be realized, and the problems that the ultra wide band and the communication frequency bands of the high-performance power amplifier can be switched and the communication frequency is continuously adjustable are solved.

The invention discloses an impedance matching plate, an impedance matching system and an impedance matching method, and relates to the technical field of electronic engineering, the impedance matching plate comprises a control module and a series resistance module, the series resistance module comprises a plurality of resistor gating modules connected in series and a first switching device, the resistor gating modules are respectively arranged on different target resistor units, and the first switching device is connected with the control module. Each resistor gating module comprises resistors with different resistance values and a second switching device which are connected in parallel, and the control module receives a resistance value adjusting instruction containing a target resistance value and generates a control signal according to a resistance value setting field in the resistance value adjusting instruction; the series resistance module conducts the target resistance gating module connected with the first switching device corresponding to the target resistance unit according to the control signal, and conducts the resistor corresponding to the second switching device in the target resistance gating module to generate a target resistance value, so that the problems that the large-range resistance adjustment cannot be realized and the impedance matching efficiency is low can be solved; the technical effects of adjusting the resistance in a large range and improving the impedance matching efficiency are achieved.

The embodiment of the invention provides a dynamic impedance adjusting device for a semiconductor signal circuit and an adjusting method thereof, and belongs to the technical field of semiconductor signal detection. The dynamic impedance adjusting device comprises a first adjusting unit which is provided with a first switch array and a first resistor array which are electrically connected to perform binary coarse adjustment through different resistance value combinations so as to determine a target resistance value to perform impedance preliminary matching; the second adjusting unit is provided with a second switch array and a second resistor array which are electrically connected, and the second switch array and the second resistor array are subjected to sub-ohm level stepping linear fine tuning to precisely correct a target resistance value obtained by the first adjusting unit to complete impedance matching; the control unit is electrically connected with the first adjusting unit and the second adjusting unit so as to control on-off of each switch in the first switch array and the second switch array. According to the dynamic impedance adjusting device, high-precision real-time dynamic adjustment is carried out on impedance matching through mixed adjustment of combined resistance coarse adjustment and small resistance value fine adjustment of multi-switch series connection resistors.

The invention discloses a continuous time linear equalizer which is arranged in a receiver. The input end of the alternating current coupling module is electrically connected with the output end of an impedance matching module of a receiver, and the alternating current coupling module is used for receiving a differential signal output by the impedance matching module, isolating a direct current signal in the differential signal to obtain a differential alternating current voltage signal, and carrying out voltage division processing on a voltage signal output by a direct current power supply to obtain a differential alternating current voltage signal; generating a direct-current common-mode voltage signal; the input end of the linear equalization module is electrically connected with the output end of the alternating-current coupling module, the output end of the linear equalization module is electrically connected with the input end of a comparator of the receiver, and the linear equalization module is used for receiving the differential alternating-current voltage signal and the direct-current common-mode voltage signal and amplifying a high-frequency signal in the differential alternating-current voltage signal; high-frequency signal attenuation caused by a low-pass channel is compensated, and the offset voltage of the circuit is calibrated based on the direct-current common-mode voltage signal. According to the invention, the bandwidth of the circuit can be expanded without increasing the power consumption.

Technologies for impedance matching networks for qubits are disclosed. In one illustrative embodiment, an impedance matching network matches a 50 Ohm transmission line to a spin qubit with a state-dependent resistance of 100 kiloohms to 105 kiloohms. The illustrative impedance matching network is tunable, allowing the impedance transformation ratio to be changed without significantly changing the matching frequency of the impedance matching network. In some embodiments, the impedance matching network matches a 50 Ohm transmission line to a lower-resistance state of a qubit. In other embodiments, the impedance matching network matches a 50 Ohm transmission line to an impedance value in between a lower-resistance state and a higher-resistance state of a qubit.

In one embodiment, an RF impedance matching circuit is disclosed. The matching circuit is coupled between a plasma chamber and an RF source. The matching circuit includes a first electronically variable capacitor (EVC) having a first variable capacitance, a terminal of the first EVC being operably coupled to the RF input, and a second EVC having a second variable capacitance, a terminal of the second EVC being operably coupled to the RF output. A control circuit determines, based on a first parameter, a first capacitance value for the first EVC and a second capacitance value for the second EVC. The control circuit then generates a control signal to alter the first and second variable capacitances accordingly. The alteration of the capacitances, while the frequency of the RF source is not altered, causes RF power reflected back to the RF source to decrease.

The present application discloses a phase shift circuit and a radio frequency microwave system. The phase shift circuit may comprise: a first node circuit, a second node circuit, and a first signal channel and a second signal channel coupled between the first node circuit and the second node circuit, wherein the first node circuit is configured to split an input signal so as to simultaneously output a first differential signal to the first signal channel and a second differential signal to the second signal channel; the first signal channel and the second signal channel are implemented on the basis of a differential circuit architecture, and are configured to respectively perform signal attenuation and / or quadrant transformation on the first differential signal and the second differential signal, so as to implement phase shift; the second node circuit is configured to synthesize a first phase-shifted signal output by the first signal channel and a second phase-shifted signal output by the second signal channel so as to obtain an output signal; and the phase difference between the output signal and the input signal is within the range of 0-360 degrees.

Circuitry is provided that includes a matching circuit, a first mixer coupled to the matching circuit and configured to receive a signal with an oscillation frequency, a second mixer coupled to the matching circuit, a first transmission line path coupled between the matching circuit and an input of the first mixer, and one or more capacitors coupled to the input of the first mixer and configured to reject signals at a harmonic frequency of the oscillation frequency. The wireless circuitry can further include a second transmission line path coupled between the matching circuit and an input of the second mixer. The transmission line path can include a first transmission line for conveying signals between the matching circuit and the first mixer, a second transmission line for conveying signals between the matching circuit and the first mixer, and a floating transmission line interposed between the first and second transmission lines.

An electronic device may include wireless circuitry having a first circuit, a second circuit, and an impedance matching network coupled between the first and second circuits. The impedance matching network can include a transformer having a primary coil and a secondary coil and a first feedforward resistor having a first terminal coupled to the primary coil and having a second terminal coupled to the secondary coil. The impedance matching network can further include a second feedforward resistor coupled between the primary coil and the secondary coil. The first and second feedforward resistors can be configured to provide a flat passband gain response for the impedance matching network.

The invention discloses a Colpitts voltage-controlled oscillator based on harmonic tuning, which comprises a differential driving module and a differential resonant cavity, and is characterized in that the differential driving module outputs a differential current signal and is used for providing a differential resonant current for the differential resonant cavity; the differential resonant cavity is used for converting an input differential current signal into a differential voltage signal, and the differential resonant cavity inputs the differential voltage signal into the differential driving module and provides a differential driving voltage for the differential driving module; wherein the differential resonant cavity has two differential-mode impedance peaks and one common-mode impedance peak, and the working frequency of the differential-mode impedance peak working at a high frequency band is increased to about two times based on a coupling effect among own inductors and a synergistic effect of frequency tuning and impedance matching; and meanwhile, the frequency corresponding to the common-mode impedance peak is one to three times of the frequency corresponding to the differential-mode impedance peak, so that the phase noise of the oscillator can be better suppressed, and more excellent comprehensive performance is realized under the condition of realizing higher working frequency.

The invention belongs to the technical field of electromagnetic detection, and particularly relates to a self-adaptive multi-frequency resonance matching system and a design method, the self-adaptive multi-frequency resonance matching system comprises a magnetic coupling resonance module and a controllable variable impedance unit which are connected in series, a switch control capacitor comprises a matching capacitor and a control switch which are connected in parallel, and a switch control inductor comprises a matching inductor and a control switch which are connected in series; the magnetic coupling resonance module comprises an inductor and a capacitor, and the capacitor is connected with the inductor in parallel and then connected with the inductor in series. The signal strength of the multi-frequency grounding type electromagnetic transmitter is improved, and efficient transmission of the multi-frequency excitation signals is achieved.

The invention provides a circuit. The circuit generates an output signal on an output node according to an input signal received from an input node; the circuit comprises a first path, a second path, a first switch and a second switch, the first path comprises a high-pass filter, the second path comprises another filter, and the first path and the second path are both connected between an input node and an output node in parallel. The first switch and the second switch respectively control whether the first path and the second path transmit an input signal to generate an output signal; wherein, at any specific moment, only one of the first switch and the second switch is configured to allow a corresponding path to transmit an input signal; the high-pass filter comprises a first capacitor and a first inductor; the first switch is connected between the first capacitance and the first inductance in the first path. The invention also provides a phase shifter and a system. According to the invention, the influence of parasitic capacitance in a high-pass filter which is used in parallel with another filter in a switching configuration can be reduced.

The radio frequency (RF) generator includes an RF power source configured to output an RF power signal and a controller coupled to the RF power source. The controller is configured to generate a pulse to modulate the RF power signal of the RF power source. The pulse includes one or more state transitions. The controller is further configured to receive a synchronization signal indicative of one or more operating characteristics or parameters of the other RF generator, and to adjust at least one of the state transitions of the pulse to synchronize the state transition with a defined phase of the received synchronization signal. Other exemplary RF generators, RF power delivery systems including the one or more RF generators, and control methods for adjusting the state transitions of the pulse to synchronize the state transition with a defined phase of the synchronization signal are also disclosed.

The invention discloses a high-isolation and high-selectivity filtering power divider with an input end broadband non-reflection characteristic. Comprising an input port, two output ports, a double-L-shaped non-reflection absorption structure, two microstrip connecting lines, two parallel coupling lines, two L-shaped step resonators, two non-reflection absorption isolation resistors, a quarter-wavelength parallel coupling connecting line and two U-shaped transmission lines. The input port is a first port; the two output ports comprise a port II and a port III; the double-L-shaped non-reflection absorption structure comprises a first non-reflection absorption resistor, a second non-reflection absorption resistor, a first L-shaped non-reflection absorption connecting line and a second L-shaped non-reflection absorption connecting line. According to the invention, the broadband reflection-free absorption characteristic of the input end and the broadband high isolation between the output ports are realized at the same time, a plurality of transmission zeros are introduced through the L-shaped step resonators, and the frequency selectivity and out-of-band rejection are improved.