42results about "Impedence convertors" patented technology

The invention discloses a terahertz broadband frequency multiplier structure based on a gap waveguide, and belongs to the technical field of terahertz frequency multiplication. A microwave signal is fed in from the input end of the broadband frequency multiplier and is input into the nonlinear diode through the low-pass filter, the microwave signal excites the nonlinear diode to generate harmonic waves, and the terahertz signal is selectively output through the high-pass filter and is transmitted to the output port. The terahertz broadband frequency multiplier based on the gap waveguide designed by the invention is wider in working bandwidth and easy to dissipate heat, can effectively avoid the problem that power continuity between spliced frequency bands needs to be considered in frequency band splicing in a terahertz broadband system, and can effectively reduce the complexity of a high-frequency terahertz frequency multiplication link.

The invention discloses a low-temperature filtering module and a quantum computer using the same. The low-temperature filtering module comprises a grounded shell; the filter main body is integrated in the shell, and the filter main body comprises a plurality of coaxially arranged metal cylinders to form an impedance conversion structure; the infrared wave-absorbing structure is integrated in the housing, and the infrared wave-absorbing structure wraps the filter main body. According to the invention, the low-pass filter and the infrared wave-absorbing structure are integrally designed through a coaxial discontinuous metal cylinder structure, and impedance conversion filtering and infrared quasi-particle absorption functions are realized in parallel in an integrated module, so that the high-frequency filtering performance of an original separation device is maintained, the number of devices is reduced through function integration, and the cost is reduced. The material cost and the occupied space of the mK temperature zone are remarkably reduced, the cooling capacity pressure of a refrigerator is relieved, meanwhile, the loss of a cascade connector is eliminated, the consistency of devices is improved, and a key solution is provided for space expansion and reliability optimization of a high-density superconducting bit system.

A tunable grounded positive and negative active inductor simulator and impedance multiplier circuit and a method for implementing the tunable grounded positive and negative active inductor simulator and impedance multiplier circuit are described. The circuit includes one second generation voltage-mode conveyor circuit (VCII+), a voltage source configured to generate an output current, a first impedance, a second impedance and an operational transconductance amplifier OTA. The first impedance is connected between the voltage source and the positive VCII+ input terminal, Y. The second impedance is connected between the second output terminal and a ground terminal. The OTA is configured to have a transconductance gain. The circuit is configured to be tuned by a selection of values for the first and second impedances.

The invention provides a pre-amplification module of a multi-mode vector hydrophone, which can be programmed through pins and has multiple working modes so as to adapt to three main types of vector hydrophones, namely an accelerometer co-oscillation type vector hydrophone, a speedometer co-oscillation type vector hydrophone and a differential pressure vector hydrophone. Therefore, the integration difficulty of the hybrid vector array equipment is effectively reduced, and the maintainability of the equipment is improved. The pre-amplification module of the multi-mode vector hydrophone comprises an amplification unit, a constant current source unit, a filtering unit and a programming configuration unit, wherein a plurality of different circuit units are configured in the programming configuration unit and are respectively used for adapting to different types of vector hydrophones; and the programming configuration unit adapts to signals output by the front-end vector hydrophone by switching internal circuit units participating in signal processing.

A server farm with at least one hybrid computing module operating at clock speed optimally matching intrinsic clock speed of a related semiconductor die related thereto.

An N tap resistor network circuit (11) is provided with a plurality of first resistors and a plurality of first taps, and generates a control voltage having one of a plurality of predetermined voltage values by selecting one among the plurality of first taps in response to an inputted digital control signal. An M tap resistor network circuit (12) is provided with a plurality of second resistors and a plurality of second taps, and generates a plurality of predetermined reference voltages from the plurality of second taps. A folding circuit (13, 14) generates an output signal having a signal level corresponding to a predetermined phase of a sine wave or a cosine wave on the basis of a difference between the control voltage and the plurality of reference voltages.

A high peak bandwidth I / O channel embedded within a multilayer surface interface that forms the bus circuitry electrically interfacing the output or input port on a first semiconductor die with the input or output port on a second semiconductor die.

The invention discloses a high-efficiency transmitter and communication equipment, the high-efficiency transmitter comprises a power amplifier and an impedance conversion assembly connected with the output end of the power amplifier, and the impedance conversion assembly is used as load impedance to maintain the output power and linear index of the high-efficiency transmitter and improve the efficiency; wherein if the load of the output end of the power amplifier when the output end of the power amplifier is not connected with the impedance conversion assembly is marked as the original load, the output impedance of the output end of the power amplifier after the output end of the power amplifier is connected with the impedance conversion assembly is positive integer multiples of the original load. According to the embodiment of the invention, the impedance conversion technology is adopted, and the output current of the power amplifier is reduced by changing the impedance of the output port of the power amplifier under the condition that the output power and the input voltage are not changed, so that the power amplifier ensures the linearity and the power amplifier efficiency is remarkably improved.

The utility model provides an integrating circuit for an ACDC driving power supply, the ACDC driving power supply, a chip and electronic equipment. The integrating circuit comprises a variable impedance sub-circuit and a first capacitor; a first end of the variable impedance sub-circuit is coupled with an output end of a transconductance amplifier of the ACDC driving power supply, a common connection point of a second end of the variable impedance sub-circuit and a first end of the first capacitor is used for outputting an integral signal of the ACDC driving power supply, the integral signal participates in a control loop of the ACDC driving power supply, and a second end of the first capacitor is connected with a reference ground; and the variable impedance sub-circuit is used for adjusting the bandwidth of the control loop according to the received control signal. According to the utility model, not only can high PF low loop bandwidth be well realized, but also the advantages of simple structure, few components and low cost are realized.

The invention relates to the technical field of synchronous particle accelerators, and provides a broadband radio-frequency voltage sampling device based on a magnetic alloy material, and the device comprises a capacitance voltage division circuit, one end of which is used for connecting a radio-frequency high-voltage end; the multiple is used for adjusting the sampling ratio; one end of the broadband impedance converter is connected with the other end of the capacitance voltage division circuit; the broadband impedance transformer comprises a first magnetic alloy ring and a first multi-core twisted wire; and the radio frequency N-type connector is connected with the other end of the broadband impedance converter, and the radio frequency N-type connector is a voltage sampling output port. According to the broadband radio frequency voltage sampling device based on the magnetic alloy material provided by the invention, the first magnetic alloy ring has very high magnetic conductivity and has a relatively low quality factor Q value, so that the broadband radio frequency voltage sampling device has an excellent broadband, and the low-frequency band characteristic of the impedance conversion circuit is greatly improved; the problem of broadband of a radio frequency voltage sampling circuit and the problem of poor performance of a low frequency band are well solved.

Hybrid computer module element X-(Cross)-point memory.

The invention provides a negative reactance synthesizer. The negative reactance synthesizer comprises a direct-current power supply; the first converter is configured to realize input current shaping under an alternating current input voltage with a given peak value and convert a variable direct current voltage into a fixed direct current voltage; a second converter configured to convert the fixed DC voltage into a superimposed DC voltage greater than a peak value of the AC input voltage, and to superimpose the superimposed DC voltage on the AC input voltage to form a variable DC voltage; a first control circuit configured to generate a first gate driver signal and a first complementary gate drive signal for controlling the first converter; and a second control circuit configured to generate a second gate driver signal and a second complementary gate drive signal for controlling the second converter. The invention provides a simple and low-cost solution to simulate independent negative reactance.

The invention belongs to the field of broadband power amplifiers, and particularly relates to a broadband impedance converter. The circuit comprises an input impedance converter, an input matching unit, a driving power amplifier, an inter-stage matching unit, a final-stage power amplifier and an output impedance converter. According to the invention, based on the HBT technology, coupling among multiple layers of metal is utilized, so that an ultra-wideband impedance converter is realized; the broadband impedance transformer can provide a required load line for the power amplifier in a very wide frequency band range; the broadband impedance converter can simplify the input matching of the ultra-wideband power amplifier and reduce the design complexity. Based on the impedance transformer and the ultra-wideband power amplifier structure, the designed wideband amplifier is high in bandwidth, high in efficiency, simple in design and small in area.

Server farm power management system.

The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4th generation (4G) communication system such as Long-Term Evolution (LTE). The present disclosure provides a device for variable signal attenuation equipped in a stack-up structure inside an RFIC. The device for signal attenuation comprises: a first transmission line positioned on a first layer inside the RFIC; a second transmission line positioned on a second layer, which is adjacent to the first layer, and electromagnetically coupled to the first transmission line; and a control unit. The first transmission line comprises an impedance control unit on one side. The control unit can variably control the impedance control unit.

The invention relates to a sampling circuit, an electronic device and a multi-reference ground system. The sampling circuit comprises a reference voltage source, a sampling module, an impedance conversion module and a signal processing module, the reference voltage source converts a power supply signal and provides a reference voltage for the sampling module; the sampling module performs conversion and primary adjustment on the acquired micro current signal based on the reference voltage and then outputs a first sampling signal and a second sampling signal respectively; the impedance conversion module performs impedance conversion on the first sampling signal and the second sampling signal and then outputs a corresponding first output signal and a corresponding second output signal respectively; the signal processing module extracts and amplifies the first output signal and the second output signal to obtain a forward sampling signal. On the premise of ensuring high precision and high signal-to-noise ratio, reliable and flexible weak signal acquisition can be realized, and the weak signal acquisition device is suitable for complex application scenes such as multi-reference ground system sampling and negative voltage sampling, and is simple in structure, low in cost, strong in interference resistance and accurate in measurement.

The invention relates to the technical field of crystal filters, in particular to a high-rectangularity integrated crystal filter which comprises a base, an integrated crystal resonance unit and a shell. An input end impedance conversion network, an output end impedance conversion network and a grounding end are arranged in the base; the integrated crystal resonance unit comprises a first broadband integrated crystal resonator, a second broadband integrated crystal resonator and a narrowband integrated crystal resonator; the input end impedance conversion network is connected with the first broadband integrated crystal resonator, the output end impedance conversion network is connected with the second broadband integrated crystal resonator, and a plurality of narrowband integrated crystal resonators are connected in series between the first broadband integrated crystal resonator and the second broadband integrated crystal resonator. Every two integrated crystal resonators are coupled through a capacitor; under the condition that the passband bandwidth of the crystal filter is not reduced, the stop band bandwidth is reduced, and the high rectangularity of the crystal filter is realized.

An aspect relates to a filter or a first gyrator including a first set of cascaded inverters, and a first set of one or more passive devices coupled to the first set of cascaded inverters. Another aspect relates to a method including applying an input signal to an input of a first one of a set of cascaded inverters coupled to a set of one or more passive devices, and receiving an output signal from the set of cascaded inverters, the output signal being a filtered version of the input signal. Still another aspect relates to a transceiver including a filter with a first set of cascaded inverters, and a first set of one or more passive devices coupled to the first set of cascaded inverters; and a mixer coupled to the filter.

The utility model discloses a low-temperature filtering module and a quantum computer using the same. The low-temperature filtering module comprises a grounded shell, the filter main body is integrated in the shell, and the filter main body comprises a plurality of coaxially arranged metal cylinders to form an impedance conversion structure; the infrared wave-absorbing structure is integrated in the housing, and the infrared wave-absorbing structure wraps the filter main body. According to the utility model, the low-pass filter and the infrared wave-absorbing structure are integrally designed through a coaxial discontinuous metal cylinder structure, and impedance conversion filtering and infrared quasi-particle absorption functions are realized in parallel in an integrated module, so that the high-frequency filtering performance of an original separation device is maintained, the number of devices is reduced through function integration, and the cost is reduced. The material cost and the occupied space of the mK temperature zone are remarkably reduced, the cooling capacity pressure of a refrigerator is relieved, meanwhile, the loss of a cascade connector is eliminated, the consistency of devices is improved, and a key solution is provided for space expansion and reliability optimization of a high-density superconducting bit system.

Described herein are circuits and systems with fixed impedances (e.g., arranged in an array) that, in accordance with certain embodiments, may be programmable for performing multiplication or similar functions. Some embodiments of the present disclosure provide an integrated circuit with an array of fixed impedances coupled to and between conductive portions of respective layers of the integrated circuit, at least some of the fixed impedances having different fixed impedance values. Some embodiments of the present disclosure provide an integrated circuit with an array of fixed impedances coupled to and between an input terminal and an output terminal of the integrated circuit, the array having fixed impedance values programmed for multiplying a value of an input signal received at the input terminal to produce an output at the output terminal. Embodiments of the present disclosure may be produced at high scale, efficiently, and reliably by leveraging existing integrated circuit technologies.

Described herein are circuits and systems with fixed impedances (e.g., arranged in an array) that, in accordance with certain embodiments, may be programmable for performing multiplication or similar functions. Some embodiments of the present disclosure provide an integrated circuit with an array of fixed impedances coupled to and between conductive portions of respective layers of the integrated circuit, at least some of the fixed impedances having different fixed impedance values. Some embodiments of the present disclosure provide an integrated circuit with an array of fixed impedances coupled to and between an input terminal and an output terminal of the integrated circuit, the array having fixed impedance values programmed for multiplying a value of an input signal received at the input terminal to produce an output at the output terminal. Embodiments of the present disclosure may be produced at high scale, efficiently, and reliably by leveraging existing integrated circuit technologies.

An acoustic impedance inverter is provided. In an embodiment, the acoustic impedance inverter can be coupled to an acoustic filter to provide needed impedance inversion at, for example, a series resonance frequency of the acoustic filter. In contrast to a conventional impedance inverter, which typically involves negatively coupled transformers, the acoustic impedance inverter utilizes a pair of acoustically coupled interdigital transducers (IDTs) to provide the needed impedance inversion at a tunable frequency. As a result, the acoustic impedance inverter can be implemented with a lower insertion loss and on a smaller footprint compared to the conventional impedance inventor.

Data transfer rates input to and output from electronic devices are a function of I / O pad circuit structure. The load capacitance of an I / O pad may reduce the bandwidth of an I / O circuit. A reduced pad capacitance circuit may be used to reduce or eliminate the positive and physical pad capacitance associated with a capacitive pad. This negative capacitance reduces or minimizes poor signal quality arising from large pad capacitance. This improved signal may be fed into a comparator, where the signal may be improved further using an equalizer. The use of negative capacitance circuit will increase the transmit and receive signaling quality of I / O interfaces.

An integrated circuit may include one or more circuits coupled to capacitance multiplier circuitry. The capacitance multiplier circuitry may include a capacitor, fixed and tunable resistances, and a transconductance circuit. The tunable resistance can be adjusted to control the overall capacitance of the capacitance multiplier circuitry. The transconductance circuit may include a transistor having a drain terminal coupled to a first electrical component and a source terminal coupled to a second electrical component. The first electrical component may be a diode-connected transistor, a direct shorting wire, a resistor, an inductor, or a current source. The second electrical component may be a current source, a direct shorting wire, a resistor, an inductor, or another diode-connected device. Configured in this way, the capacitance multiplier circuitry can provide a large adjustable amount of capacitance without a voltage drop and without consuming a large amount of power.

The invention provides an electronic circuit for powering a coil or coil set of an electromagnetic motor. The electronic circuit comprises a normal operating circuit to be used during a normal operating mode, a braking circuit to be used during an emergency mode, and a switch device for switching between the normal operating mode and the emergency mode. In the normal operating mode, the electronic circuit is configured to supply a power to the coil or coil set. In the emergency mode, the electronic circuit is configured to short circuit the coil or coil set across the braking circuit. The braking circuit is arranged to create a negative resistance or negative impedance to increase the braking force.

Impedance matching network (104, 204, 400, 500), comprising: a first signal terminal (212, 302, 402, 502) configured to receive a signal from a source circuit (102, 202); a second signal terminal (214, 304, 404, 504) configured to provide the signal to a load circuit (106, 206); a series branch comprising a variable capacitive component (208, 300, 350, 401, 501) between the first signal terminal (212, 302, 402, 502) and the second signal terminal (214, 304, 404, 504), wherein the variable capacitive component (208, 300, 350, 401, 501) comprises a plurality of series-connected capacitive sections (306, 308, 310, 312, 314, 406, 408, 410, 412, 414, 506, 508), wherein at least one of the capacitive sections comprises a switching element (316, 318, 320, 416, 418, 420, 516, 518, 520) comprising a stack of series-connected transistors (352a...352N), and a control component (210, 426, 526) configured to control a capacitance of the variable capacitive component (208, 300, 350, 401, 501) by controlling at least one of the capacitive sections (306, 308, 310, 312, 314, 406, 408, 410, 412, 414, 506, 508) based on a predetermined algorithm, wherein the at least one of the capacitive sections (306, 308, 310, 312, 314, 406, 408, 410, 412, 414, 506, 508) comprising the switching element (316, 318, 320, 416, 418, 420, 516, 518, 520) comprises a first capacitive section comprising a first switching element comprising a stack of series-connected transistors, and a second capacitive section comprising a second switching element comprising a stack of series-connected transistors, wherein the control component (210, 426, 526) is configured to switch the capacitive sections (306, 308, 310, 312, 314, 406, 408, 410, 412, 414, 506, 508) comprising the switching elements (316, 318, 320, 416, 418, 420, 516, 518, 520) on or off in series in steps of one in a predetermined direction according to the predetermined algorithm in order to avoid voltage overload.

The application relates to a design method of a wideband asymmetric quasi-balanced DPA with an enlarged backoff range, which comprises the following steps: establishing the architecture of the wideband asymmetric quasi-balanced DPA, establishing the equivalent circuit model of the wideband asymmetric quasi-balanced DPA, and obtaining the mathematical relationship between voltage and current; adopting a linear current model as an excitation signal to determine the load impedance, output power and drain efficiency under different normalized input levels; setting the load impedance of the main power amplifier and the auxiliary power amplifier to be equal when the output power is saturated, and obtaining the adjustable proportional coefficient of the loaded load; setting the voltage of the main power amplifier to be equal after the voltage saturation, and obtaining the relationship between the current ratio of the auxiliary power amplifier and the normalized input starting level; obtaining the relationship between the output power backoff ratio and the normalized input starting level; and optimizing the isolation port load of the output coupler and the direct current bias combination of the main power amplifier and the auxiliary power amplifier in the target working frequency band to meet the efficiency requirement under the set output power backoff ratio.

A voltage differential current feed transconductance amplifier system (VDCCTA), consisting of: a voltage differential current booster module (VDCC); an operational transconductance amplifier (OTA) module, combined with the VDCC module on a Z-connector; and a variety of connections, including: two input connections; five output connections; and two buffered connections, wherein the two input connections are configured to receive differential input voltages, one output connection is configured to provide current output, two output connections are configured to provide current images of the connection providing current output, and two further output connections are configured to provide transconductance outputs; the system is configured to be tunable by pre-flows; and the system is further configured to operate as an active inductor simulator when connected to a grounded capacitor.

According to an embodiment of the present invention, provided is a radioactive noise reduction device for compensating for electromagnetic interference generated by a radioactive source, the radioactive noise reduction device comprising: a compensation unit which includes a compensation loop through which all or a portion of radioactive noise emitted from the source passes; and a circuit unit which is connected to the compensation unit and includes one or more inductors and one or more amplification units. As an impedance of the circuit unit, an input impedance (Zin) viewed from the compensation unit is a value obtained by negatively converting the impedance of the compensation unit.

An aspect relates to a filter or first gyrator including a first set of cascaded inverters and a first set of one or more passive devices coupled to the first set of cascaded inverters. Another aspect relates to a method including applying an input signal to an input of a first of the set of cascaded inverters coupled to the set of one or more passive devices and receiving an output signal from the set of cascaded inverters, the output signal being a filtered version of the input signal. Yet another aspect relates to a transceiver including a filter having a first set of cascaded inverters and a first set of one or more passive devices coupled to the first set of cascaded inverters and a mixer coupled to the filter.