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公开(公告)号：US20230188118A1
公开(公告)日：2023-06-15
申请号：US17926083
申请日：2020-05-20
发明人： Ufuk Özdemir , Peter Caputa , Kirill Kozmin
CPC分类号： H03H11/04 , H03D7/1491 , H03L7/08 , H03M1/12 , H03M1/66
摘要： A filter circuitry (200) using an active inductor is disclosed. The filter circuitry (200) has a first terminal (In1/Out1) and a second terminal (In2/Out2). The filter circuitry (200) comprises a first transistor (M1) and a second transistor (M2). The filter circuitry (200) further comprises a first switch (S1), a second switch (S2), a first capacitor (C1), a second capacitor (C2) and a resistor (R). The first and second transistors (M1/M2) together with the resistor (R) and the first and second switches (S1/S2) are connected in a current mirror topology. The first and second capacitors (C1/C2) are connected at the first and second terminals of the filter circuitry (200) respectively. The filter circuitry (200) is configurable to either have the first terminal (In1/Out1) as input and the second terminal (In2/Out2) as output or have the first terminal (In1/Out1) as output and the second terminal (In2/Out2) as input by changing on-off states of the first and second switches. The transistors are interconnected in a current-mirror fashion. Depending on the switch position one of the transistors also acts as part of an active inductor such that the circuit functions as a low pass filter with a complex pole pair and a real pole. Depending on the switch position the LPF allows signal flow in either direction. For use in a TDD environment in combination with a passive mixer (420).
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公开(公告)号：US20230179176A1
公开(公告)日：2023-06-08
申请号：US17920076
申请日：2020-06-04
发明人： Yuki FUJITA , Yasuaki FURUSHO , Hiroyuki ICHINOSE
摘要： A noise filter includes: a voltage detector which detects a common mode voltage generated by a power converter; a voltage division circuit which outputs a division voltage obtained by dividing the common mode voltage detected by the voltage detector; a plurality of common mode transformers which superimpose injection voltages each having a polarity opposite to a polarity of the common mode voltage onto an output from or an input to the power converter; and an injection waveform generator which generates, on the basis of the division voltage, output voltages to be outputted to primary sides of the plurality of common mode transformers. The injection waveform generator generates the output voltages such that a difference between the common mode voltage and a total injection voltage obtained by summing the injection voltages to be superimposed by the plurality of common mode transformers is equal to or smaller than an allowable value.
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公开(公告)号：US20230087681A1
公开(公告)日：2023-03-23
申请号：US17905035
申请日：2021-01-15
发明人： Yunguang Yang
摘要： An anti-electromagnetic interference telescopic boom and a crane. The telescopic boom includes a first anti-interference module, a second anti-interference module and a cable drum; wherein the first anti-interference module, the second anti-interference module and the cable drum are all arranged on a telescopic boom of the crane, the first anti-interference module is connected to a first end of the cable drum, and the second anti-interference module is connected to a second end of the cable drum, the cable drum is configured to transmit a control signal and a power supply signal for a control system of the telescopic boom, the first anti-interference module is configured to filter and encrypt the control signal and the power signal, and the second anti-interference module is configured to re-filter, decrypt and amplify the control signal and the power signal.
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公开(公告)号：US20230060340A1
公开(公告)日：2023-03-02
申请号：US17577131
申请日：2022-01-17
发明人： GAO-TIAN LU , YANG WEI , SHOU-SHAN FAN , YUE-GANG ZHANG
摘要： A thin film transistor includes a gate electrode, a gate insulating layer, a carbon nanotube structure, a source electrode and a drain electrode. The gate insulating layer is located on the gate electrode. The carbon nanotube structure is located on the gate insulating layer. The source electrode and the drain electrode are arranged at intervals and electrically connected to the carbon nanotube structure respectively. The thin film transistor further includes an interface charge layer, and the interface charge layer is located between the carbon nanotube structure and the gate insulating layer.
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公开(公告)号：US20220345114A1
公开(公告)日：2022-10-27
申请号：US17860640
申请日：2022-07-08
申请人： SK hynix Inc.
发明人： Gi Moon HONG , Dae Han KWON
摘要： A bias generation circuit may include a bias generator and compensator. The bias generator may be configured to generate a bias voltage based on a reference voltage. The compensator may be configured to detect level changes of a power voltage. The compensator may be configured to control a level of the bias voltage based on detection results.
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26.发明授权公开(公告)号：US11469739B2
公开(公告)日：2022-10-11
申请号：US17371200
申请日：2021-07-09
发明人： Yi-Lun Shen , Yu-Yun Huang
摘要： A filter capacitor discharge circuit includes a high-voltage terminal, a signal preparation circuit, a low-pass filter, a voltage level detector, a timer unit, and a switch unit. The signal preparation circuit receives a detection signal corresponding to an AC voltage from the high-voltage terminal, and generates a voltage signal according to the detection signal. The low-pass filter provides a filtered signal according to the voltage signal. The voltage level detector checks whether a voltage difference between the voltage signal and the filtered signal is less than a predetermined value. When the voltage difference is less than the predetermined value, the timer unit performs time calculation to accumulate a timing result. When the timing result exceeds a predetermined time, the switch unit is turned on so that the firster capacitor is discharged through the switch unit.
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公开(公告)号：US11456515B2
公开(公告)日：2022-09-27
申请号：US17307261
申请日：2021-05-04
申请人： Raytheon Company
摘要： A method includes receiving a radio frequency (RF) input signal using at least one non-reciprocal circulator. The method also includes generating an RF output signal using at least one of multiple reflective filter elements. Each reflective filter element is configured to receive an RF signal from the at least one non-reciprocal circulator and to provide a filtered RF signal to the at least one non-reciprocal circulator. The reflective filter elements include amplitude change reflectors configured to modify amplitudes of the RF signal at different frequencies. The RF output signal represents the RF input signal as modified by the at least one of the reflective filter elements.
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公开(公告)号：US20220247386A1
公开(公告)日：2022-08-04
申请号：US17553206
申请日：2021-12-16
申请人： Quantinuum LLC
发明人： Corey Andrew Barnes , James Knodel , Joshua Giles , Matthew Swallows , Jeremy S. Parks , Jason Dominy , Leonardo I. Ascarrunz , David James Francois , Adam P. Reed , Maya Fabrikant
摘要： Various embodiments provide methods, apparatuses, systems, or computer program products for providing a signal to an electrode of a quantum computer. In an example embodiment, the system comprises noise mitigation circuitry comprising a signal generator, a gain stage, and a filter stage. The signal generator may be comprised of a plurality of voltage sources. The controller causes the signal generator to generate a signal, and the signal is provided to the electrode through the noise mitigation circuitry to cause at least a portion of the system to perform a function.
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公开(公告)号：US20220239282A1
公开(公告)日：2022-07-28
申请号：US17668225
申请日：2022-02-09
发明人： Danting XU , Kun WU , Ziyang GAO
摘要： An active filter reduces Electro-Magnetic Interference (EMI) created by current flowing through a power line. The active filter connects to the power line at a single node through a connection capacitor. A sense current flows through the connection capacitor when the power line current changes. This sense current is applied to a gain control circuit having cross-coupled PNP transistors that drive currents to both terminals of a variable capacitor. The variable capacitor converts these currents to a voltage that is injected back into the power line through the connection capacitor as an injected compensation voltage that compensates for the sensed current.
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公开(公告)号：US11336263B2
公开(公告)日：2022-05-17
申请号：US16771773
申请日：2018-12-13
发明人： Tinus Stander , Nishant Singh
摘要： The invention relates to a tunable, silicon-based negative-resistance circuit (10, 30) and to an active filter (50) for E-band frequencies (60 to 90 GHz). A base of a transistor (11) is connected to an on-chip inductive transmission line (13) which has a length of approximately a quarter-wavelength at a frequency of 83.5 GHz. The transmission line connects a DC voltage source (14) to the base terminal of the transistor (11) in order to bias the base. Another DC voltage source (15) is connected to the collector of the transistor (11) to bias the transistor. A capacitor (16) operatively bypasses or decouples the voltage source (15) in order to shunt high frequencies or alternating current (AC) signals to ground. The emitter terminal of the transistor (11) is connected to ground through a resistor (18) to limit the collector current (le). The circuit gives rise to improved quality factor of resonators.
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