41results about "Multiple-port active networks" patented technology

The invention relates to the technical field of weighing, in particular to a dynamic weighing filtering circuit and a dynamic weighing filtering method.The dynamic weighing filtering circuit comprises a weighing sensor, a signal processing module, a filtering module and a phase shifting module, and the dynamic weighing filtering circuit is obtained by collecting an electric signal output by the weighing sensor and conducting amplification, filtering and phase processing on the electric signal. The interference processing burden of the subsequent software side is reduced, so that a high-quality digital signal source is output in the dynamic weighing process, the overall detection precision is improved, and the MCU operation pressure is relieved.

The utility model provides a high-temperature-resistant sinusoidal signal source filter circuit, which comprises a high-stability oscillation source module, the high-stability oscillation source module is composed of a crystal oscillator Y1 and other elements, the frequency stability of an oscillation source is ensured, the output frequency of a sinusoidal signal source can be changed by changing the frequency of the crystal oscillator, an inverter U1B shapes and outputs oscillation source signals, and the signal quality is further ensured. The power supply filtering module effectively eliminates circuit noise and interference, the high-stability voltage source module supplies power to the oscillation source circuit through a resistor R1, a voltage stabilizing diode D1 and a capacitor C5, the temperature stability of the oscillation source circuit is good due to the characteristics of the voltage stabilizing diode D1, and it is guaranteed that the circuit works stably under different conditions. The signal amplitude adjusting module can flexibly change the output amplitude of the sinusoidal signal source, the active band-pass filtering module can accurately convert square wave signals output by the oscillation source into sine wave signals, parameter setting is reasonable, and the characteristics of quality factor Q, gain G, center frequency F and the like enable the signal processing effect to be good. And parameters of the band-pass filter are matched with parameters of the oscillating source during debugging, so that the circuit is stable and reliable in overall performance, and is suitable for high-temperature environments and other scenes with high signal quality requirements.

A circuit may comprise a first multiplexer, a second multiplexer, a combination of logic gates, a third multiplexer, a first low-pas filter, and a second low-pass filter. The first multiplexer can be configured to receive and select a first clock signal, a second clock signal, a third clock signal, and a fourth clock signal. Respective phases of the first to fourth clock signals are related to each other. The second multiplexer can be configured to receive and select the first to fourth clock signals. The combination of logic gates may comprise a first logic gate and a second logic gate. The combination of logic gates can be coupled to the second multiplexer and can be configured to receive the second plurality of the first to fourth clock signals. The third multiplexer can be configured to receive and select the first to fourth outputs.

Embodiments of a re-driver and a resistance unit for a re-driver are disclosed. In an embodiment, a resistance unit for a re-driver comprises at least one resistor connected to an input / output of the re-driver, at least one switch connected in series to the at least one resistor, and a voltage regulator connected to the at least one switch and configured to generate a termination voltage for the at least one switch. Using the voltage regulator can avoid large voltage jumps at the input / output to keep the connected device safe, instead of grounding the at least one resistor.

An Ising machine system comprises a plurality of capacitors, a plurality of resistors having first and second terminals, wherein each capacitor is electrically connected to the first or second terminal of at least one resistor of the plurality of resistors via each of its positive and negative terminals, a power supply having positive and negative rails, a switching network configured to initialize each of the plurality of capacitors with a positive or negative voltage from the power supply, then disconnect all of the plurality of capacitors from the power supply, allowing the capacitor voltages to float, and at least one voltage measuring device configured to measure a voltage across the positive and negative terminals of a capacitor of the plurality of capacitors. A method of running an Ising machine system is also disclosed.

According to an aspect of the present inventive concept there is provided a multistage feed network for distributing a signal stage by stage for feeding a superconducting circuit. The multiple stages of the multistage feed network are arranged in a sequential order, and a plurality of two-port networks are configured to connect to two adjacent stages in between for impedance matching. At least one stage comprises a mesh network made of interconnected superconducting wires such that incoming signal(s) of said stage can be distributed to the outgoing signals of said stage by said mesh network with a minimal deviation of signal amplitude and of signal phase.

A non-linear superconducting quantum circuit comprising at least one resonant portion (30,32) and an asymmetrical threaded superconducting quantum interference device (34) connected to said at least one resonant portion (30,32) galvanically, said non-linear superconducting circuit having a first mode with a first resonant frequency and a second mode with a second resonant frequency, the ratio between said first resonant frequency and said second resonant frequency being different from ½, said at least one resonant portion (30,32) being configured with inductance and capacitance values of its symbolic representation which induce with said asymmetrical threaded superconducting quantum interference device (34) said first mode and said second mode such that, said non-linear superconducting quantum circuit has zero-point fluctuations of the superconducting phase across the asymmetrical threaded superconducting quantum interference device (34) for the first mode and the second mode which are superior or equal to 0.05 rad.

The utility model provides a noise suppression amplifier which comprises a first instrument amplifier, a second instrument amplifier, a first filter and a second filter, the first instrument amplifier is electrically connected with the second instrument amplifier, and the second instrument amplifier is electrically connected with the first filter; and the second filter is arranged in the first instrument amplifier or the second instrument amplifier. On one hand, the second filter can perform primary filtering on the signal input into the second instrument amplifier, so that noise in the output signal of the second instrument amplifier is effectively reduced. And on the other hand, the signal input by the second instrument amplifier is filtered into the stable low-noise signal by the first-stage filter, so that the bandwidth of the first filter can be relatively large to ensure that the driving capability of the second instrument amplifier meets the design requirement.

The embodiment of the invention provides a control method of a filter modulator module, an integrated circuit chip and a motor control system. Relates to the technical field of integrated circuits. The method comprises the following steps: for each path of pulse width modulation module in multiple paths of pulse width modulation modules, if it is determined that a current count value of the pulse width modulation module meets a preset synchronization triggering condition in a counting process, triggering a synchronization event, and generating a synchronization signal corresponding to the synchronization event. And after the synchronous signal is generated, if it is determined that the current count value meets a preset interruption triggering condition at the current moment in the counting process, interruption is executed at the current moment, and the current value of the motor is collected at the current moment. The method is used for achieving the effect of improving the accuracy and the responsivity of the filtering modulator.

The utility model provides a radio frequency source module based on multichannel filtering, the radio frequency source module comprises a phase-locked loop module, a frequency multiplication filtering amplification module and a frequency division filtering amplification module, the phase-locked loop module provides radio frequency signals for the frequency multiplication filtering amplification module and the frequency division filtering amplification module respectively, and the frequency division filtering amplification module provides frequency division signals for the frequency multiplication filtering amplification module and the frequency division filtering amplification module respectively. In the frequency multiplication filtering and amplifying module and the frequency division filtering and amplifying module, a filter is independently arranged for each frequency band, so that the finally output signal is purer.

The invention provides an antenna assembly and an intelligent terminal. The antenna assembly comprises a plurality of antenna units, a phase adjusting unit and a filtering network. The plurality of antenna units at least comprise a first antenna unit and a second antenna unit which are adjacently arranged; the phase adjusting unit is electrically connected with the first antenna unit and is used for changing the direction of the induction current generated by the second antenna unit when the first antenna unit works in the working frequency band; and the filter network is electrically connected between the first antenna unit and the second antenna unit and is used for enabling the induction current to flow outside the working frequency band so as to reduce the intensity of the induction current in the working frequency band, thereby reducing the coupling effect between adjacent antennas, improving the isolation between the adjacent antennas and improving the performance of the antennas.

Embodiments of redrivers and resistive units for redrivers are disclosed. In an embodiment, a resistive unit for a redriver includes at least one resistor connected to an input / output terminal of the redriver, at least one switch serially connected to the at least one resistor, and a voltage regulator connected to the at least one switch and configured to generate a termination voltage for the at least one switch. Instead of grounding the at least one resistor, using the voltage regulator can avoid large voltage jump at input / output terminals to keep connected devices safe.

An electronic device according to an embodiment of the present disclosure may comprise: a processor; a memory electrically connected to the processor; a power management integrated circuit (PMIC) electrically connected to the processor; a radio frequency integrated circuit (RFIC) electrically connected to the processor; a power supply module including a power supply electrically connected to the PMIC and the processor; a front-end module including circuitry\electrically connected to the PMIC, the RFIC, and the power supply module, and is configured to modulate and amplify an RF signal received from the RFIC; a variable notch filter electrically connected to the power supply module and the front-end module, and connected to a transmission signal amplifier of the front-end module and configured to remove a harmonic frequency; and an antenna electrically connected to the front-end module, wherein the processor is configured to: control the PMIC and the power supply module to supply power to the front-end module; control a wireless communication operation to be performed using multiple frequency bands; and based on performing the wireless communication operation using the multiple frequency bands, control impedance of the variable notch filter to adjust a frequency removal band of the variable notch filter based on a parameter pre-stored in the memory.

The object of the present invention is to provide a high-bandwidth loopback circuit in a high-speed SerDes. The circuit includes: a T-coil module, an IOpad path, a loopback path, and an ESD capacitor; the T-coil module is connected to the IOpad path, the ESD capacitor, and the loopback path for eliminating the influence of the ESD capacitor on the circuit; the IOpad path is disconnected when the loopback path is turned on. The present invention utilizes the bandwidth expansion advantage brought by putting the loopback circuit into the ESD shared T-coil, so that the influence of the loopback switch on the signal path is reduced, and an additional inductor is added on the loopback path to reduce the attenuation caused by the large parasitics of the ESD branch.

A method is provided for adjusting the resonance frequency of a resonance circuit included in an electronic pen. The method uses adjusting means for adjusting the capacitance of an internal capacitor array and measuring means for measuring an alternating magnetic field generated by the resonance circuit. The method includes (1) a step of changing the state of a predetermined portion of multiple capacitive elements constituting the internal capacitor array, and (2) a step of changing, according to reference resonance frequency variations of the resonance circuit before and after the state change, the state of a portion or all of at least one capacitive element constituting the inner capacitor array other than said predetermined portion of the capacitive elements.

A non-linear superconducting quantum circuit comprising at least one resonant portion (30,32) and an asymmetrical threaded superconducting quantum interference device (34) connected to said at least one resonant portion (30,32) galvanically, said non-linear superconducting circuit having a first mode with a first resonant frequency and a second mode with a second resonant frequency, the ratio between said first resonant frequency and said second resonant frequency being different from ½, said at least one resonant portion (30,32) being configured with inductance and capacitance values of its symbolic representation which induce with said asymmetrical threaded superconducting quantum interference device (34) said first mode and said second mode such that, said non-linear superconducting quantum circuit has zero-point fluctuations of the superconducting phase across the asymmetrical threaded superconducting quantum interference device (34) for the first mode and the second mode which are superior or equal to 0.05 rad.

Disclosed is an electromagnetic-circuit co-design approach for massively reconfigurable, multifunctional, and high-speed programmable metasurfaces with integrated chip tiling. The ability to manipulate the incident electromagnetic fields in a dynamically programmable manner and at high speeds using integrated chip tiling approach is also disclosed. The scalable architecture uses electromagnetic-circuit co-design of metasurfaces where each individual subwavelength meta-element is uniquely addressable and programmable. The disclosed device comprises a large array of such meta-elements. The design relies on integrated high frequency switches designed in conjugation with meta-element for massive reconfigurability of incident amplitude and phase. The disclosed chip is multi-functional and can perform beamforming, high speed spatial light modulation, dynamic holographic projections, and wavefront manipulation.

The invention discloses a novel CMOS (Complementary Metal-Oxide-Semiconductor Transistor) active module, namely a voltage-controlled voltage-current converter (VCUIC), which is a core module of a linear ion drift model memory resistor simulator. On the basis of an HP memristor principle, a reconfigurable memristor simulator model based on a VCUIC is invented. In this model, the VCUIC may configure an active device with current control and amplification capabilities to form a magnetic flux controlled memristor emulator. Based on the VCUIC module, three types of memristor simulators are provided, and the memristor characteristics of the three types of memristor simulators in a high-frequency range are researched. The application range is wide, including high-speed memory arrays such as RRAM, analog and digital circuits, neuromorphic circuits and the like.

The nonlinear superconducting quantum circuit includes at least one resonator (30, 32) and a superconducting quantum interferometer (34) with an asymmetric thread galvanically connected to the at least one resonator (30, 32). The nonlinear superconducting circuit has a first mode having a first resonant frequency and a second mode having a second resonant frequency. The ratio between the first resonant frequency and the second resonant frequency is different from 1 / 2. The at least one resonator (30, 32) is configured with inductance and capacitance values ​​whose symbolic representations induce the first and second modes through the superconducting quantum interferometer (34) with an asymmetric thread such that the nonlinear superconducting quantum circuit has a zero-point variation of 0.05 radians or more in the superconducting phase across the superconducting quantum interferometer (34) with an asymmetric thread in the first and second modes.

The invention discloses a chaotic circuit based on an absolute value memristor, and relates to the field of chaotic systems, and the chaotic circuit comprises a first phase inverter circuit which is used for carrying out the phase inversion operation of a first signal, and obtaining a sixth signal; the absolute value memristor circuit is used for performing absolute value operation on the fifth signal to obtain a third intermediate signal; the first branch circuit is used for calculating the first signal, the second signal and the fourth signal at the previous moment; the second branch is used for calculating the first signal, the third signal and the fourth signal at the previous moment; the third branch is used for calculating the first signal and the second signal at the previous moment; the fourth branch is used for calculating the first signal, the third intermediate signal and the second signal at the previous moment; the fifth branch is used for carrying out operation on a fifth signal and a sixth signal at the previous moment; according to the invention, the complexity of the chaotic circuit is reduced while the complexity of the chaotic signal of the chaotic circuit is improved.

To provide a coupler and a calculator that can improve controllability.SOLUTION: A coupler according to an embodiment includes first through fourth capacitors, first and second inductors, and a first Josephson junction. The first inductor is electrically connected to the first capacitor. The second inductor is electrically connected to the second capacitor. The other end of the second inductor is electrically connected to the other end of the first capacitor, the other end of the second inductor, and the other end of the second capacitor. The first Josephson junction is electrically connected to the first and second capacitors. A space is provided which is surrounded by the first inductor, the second inductor and the first Josephson junction. The third capacitor is electrically connectable with a first nonlinear resonator. The fourth capacitor is electrically connectable with a second nonlinear resonator.SELECTED DRAWING: Figure 1

An excitation source circuit comprises a sinusoidal signal generation circuit, a D-type power amplification circuit, an LC filter and a push-pull switching power supply circuit. The sinusoidal signal generation circuit is used for outputting a sinusoidal signal; the D-type power amplification circuit is electrically connected with the sinusoidal signal generation circuit, and the D-type power amplification circuit realizes the amplification of a sinusoidal signal by controlling the on and off of a power switching device; the LC filter is electrically connected with the D-type power amplification circuit, and the LC filter processes the amplified sinusoidal signal and then outputs a driving signal; the push-pull switching power supply circuit is used for supplying power to the D-type power amplification circuit. According to the utility model, the noise of the excitation source circuit is reduced, and the measurement precision of the inductive displacement sensor is further improved.

A non-linear superconducting quantum circuit comprising at least one resonant portion and an asymmetrical threaded superconducting quantum interference device connected to said at least one resonant portion galvanically, said non-linear superconducting circuit having a first mode with a first resonant frequency and a second mode with a second resonant frequency, the ratio between said first resonant frequency and said second resonant frequency being different from ½, said at least one resonant portion being configured with inductance and capacitance values of its symbolic representation which induce with said asymmetrical threaded superconducting quantum interference device said first mode and said second mode such that, said non-linear superconducting quantum circuit has zero-point fluctuations of the superconducting phase across the asymmetrical threaded superconducting quantum interference device for the first mode and the second mode which are superior or equal to 0.05 rad.

A tunable filter (40; 50; 60; 70; 80; 80'; 90; 130) with tunable suppression, comprising: a first inductor (L1); a second inductor (L2) mutually coupled to the first inductor (L1), wherein the first inductor (L1) is connected in series with the second inductor (L2); and a tunable capacitor circuit (42; 52; 62; 72; 74; 92) which is electrically connected in parallel to the first inductor (L1) which has a switch (S11, S12, ..., S1N; S21, S22, ..., S2N; S31, S32, ..., S3N; S41, S42, ..., S4N; S51, S52, ..., S5N) and which is designed to match at least two notches in the frequency response of the tunable filter by changing a switching state of the switch (S11, S12, ..., S1N; S21, S22, ..., S2N; S31, S32, ..., S3N; S41, S42, ..., S4N; S51, S52, ..., S5N), wherein the tunable filter is designed to filter a high-frequency signal.

According to one embodiment, a coupler includes first to fourth capacitors, first and second inductors, and a first Josephson junction. The first capacitor includes a first capacitor end portion and a first capacitor other-end portion. The first inductor includes a first inductor end portion, and a first inductor other-end portion. The second inductor includes a second inductor end portion, and a second inductor other-end portion. The first Josephson junction includes a first Josephson junction end portion, and a first Josephson junction other-end portion. A space is surrounded with the first inductor, the second inductor, and the first Josephson junction. The third capacitor includes a third capacitor end portion, and a third capacitor other-end portion. The fourth capacitor includes a fourth capacitor end portion, and a fourth capacitor other-end portion.

A non-linear superconducting quantum circuit includes at least one resonant portion (30, 32) and an asymmetrically threaded superconducting quantum interference device (34) electrically connected to the at least one resonant portion (30, 32). The nonlinear superconducting circuit includes a first mode having a first resonant frequency and a second mode having a second resonant frequency, the ratio of the first resonant frequency to the second resonant frequency being different from 1 / 2. The at least one resonant portion (30, 32) is configured with inductance and capacitance values represented by its symbols that, together with the asymmetric threaded superconducting quantum interference device (34), induce the first mode and the second mode such that the non-linear superconducting quantum circuit has, in the first mode and the second mode, at least one of the resonant portions (30, 32) is coupled to the non-symmetric threaded superconducting quantum interference device (34), and the at least one resonant portion (30, 32) is coupled to the non-symmetric threaded superconducting quantum interference device (34). And the zero fluctuation of the superconducting phase on the asymmetric thread superconducting quantum interference device (34) is greater than or equal to 0.05 radian.

A non-linear superconducting quantum circuit comprising at least one resonant portion and an asymmetrical threaded superconducting quantum interference device connected to said at least one resonant portion galvanically, said non-linear superconducting circuit having a first mode with a first resonant frequency and a second mode with a second resonant frequency, the ratio between said first resonant frequency and said second resonant frequency being different from ½, said at least one resonant portion being configured with inductance and capacitance values of its symbolic representation which induce with said asymmetrical threaded superconducting quantum interference device said first mode and said second mode such that, said non-linear superconducting quantum circuit has zero-point fluctuations of the superconducting phase across the asymmetrical threaded superconducting quantum interference device for the first mode and the second mode which are superior or equal to 0.05 rad.

Methods and devices to address body leakage current generation and bias voltage distribution associated with body leakage current in an OFF state of a FET switch stack are disclosed. The devices include charge redistribution arrangements and bridge networks to perform coupling / decoupling to / from the FET switch stack. Detailed structures of such bridge networks are also described.

The invention provides an integrated circuit. An integrated circuit for an electronic pen includes: an internal capacitor array including a first portion of a capacitive element and a second portion of the capacitive element, in which a state of the first portion of the capacitive element can be changed by a predetermined process, in which the second portion of the capacitive element and a coil constitute a resonance circuit; and a circuit coupled to the internal capacitor array, and the circuit, in operation, controls the electronic pen to transmit a signal using the resonant circuit.

Various embodiments are described for controlling the resonant frequency of a resonator. The system includes at least one resonant circuit and an active variable reactance circuit that controls the resonant frequency of the at least one resonant circuit. The active variable reactance circuit includes an electrically controllable switching element and a switch controller subcircuit configured to switch the electrically controllable switching element at a frequency of a radio frequency (RF) current or voltage passing through or across the device such that the RF current flowing from a first terminal to a second terminal is substantially sinusoidal.