Patents Issued in September 14, 2023
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Publication number: 20230291327Abstract: A power conversion system includes a plurality of power conversion devices connected to a plurality of AC systems, respectively. The power conversion devices are further connected to a common DC circuit. The power conversion system further includes a start-up device to start up each power conversion device. The start-up device selects an AC system that satisfies a defined condition relating to power supply capability from among the plurality of AC systems based on system information of the plurality of AC systems and starts up a power conversion device connected to the selected AC system.Type: ApplicationFiled: August 21, 2020Publication date: September 14, 2023Applicant: Mitsubishi Electric CorporationInventors: Shuhei FUJIWARA, Yoshiyuki KONO, Ryosuke UDA, Takuya KAJIYAMA, Toshiyuki FUJII
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Publication number: 20230291328Abstract: A control system of a power converter includes a plurality of carrier wave generating units which are respectively provided for a plurality of power converters connected between a plurality of DC power supplies and a common AC power supply and which are configured to respectively generate carrier waves on the basis of an AC voltage of the AC power supply. The control system of the power converter can thereby synchronize carrier phases of a plurality of power converters.Type: ApplicationFiled: February 3, 2020Publication date: September 14, 2023Applicant: TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATIONInventors: Issei FUKASAWA, Masahiro KINOSHITA, Kenta YAMABE
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Publication number: 20230291329Abstract: A power conversion device includes an AC current sensor, an AC voltage sensor, a DC voltage sensor, and a control circuit. The control circuit includes an integration unit configured to integrate a difference between a predetermined overcurrent threshold and the output current detected by the AC current sensor and output an integration output, a multiplication unit configured to multiply the integration output outputted from the integration unit by the output voltage detected by the AC voltage sensor and output a multiplication output, a division unit configured to calculate and output a Duty ratio by dividing the multiplication output outputted from the multiplication unit by the DC voltage detected by the DC voltage sensor, and a voltage control unit configured to control the AC voltage according to the Duty ratio outputted from the division unit.Type: ApplicationFiled: February 21, 2023Publication date: September 14, 2023Inventors: Ryo Gondo, Akinori Maruyama
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Publication number: 20230291330Abstract: A controller for a power converter device, wherein the controller is configured to provide for switching of a switching component of the power converter device based on a feature in a control signal, sample at least one parameter of the power converter device upon expiry of a predetermined time period after switching of the switching component; and output the sample of the at least one parameter.Type: ApplicationFiled: February 13, 2023Publication date: September 14, 2023Inventors: Jerry Rudiak, David Domenic Putti, Ibrahim Shihadeh Kandah
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Publication number: 20230291331Abstract: An electronic device comprises: a rectifying unit to rectify an input alternating current voltage; a converter to convert the rectified input alternating-current voltage into a direct-current voltage; an inverter including a plurality of switching elements to convert the direct-current voltage into a three-phase alternating current voltage and outputting the three-phase alternating current voltage to a load; a DC link unit located between the converter and the inverter; and a control unit to control the inverter to convert the direct-current voltage into the three-phase alternating-current voltage according to a pulse width modulation (PWM) control signal. The control unit reduces the speed of a load in response to the detecting of a stop signal with respect to the PWM control signal and controls the load to stop a driving of the load in response to the detecting of a change in the link voltage of the DC link unit.Type: ApplicationFiled: May 17, 2023Publication date: September 14, 2023Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Jonghyun SHIN
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Publication number: 20230291332Abstract: An artificial muscle assembly includes initiating actuators and an artificial muscle. The artificial muscle includes a housing including an electrode region and an expandable fluid region, and an electrode pair positioned in the electrode region. The electrode pair includes a first electrode and a second electrode fixed to respective first and second surfaces of the housing. At least one of the first electrode and the second electrode includes a central opening defining the expandable fluid region. The electrode pair is actuatable between a non-actuated state and an actuated state such that actuation from the non-actuated state to the actuated state directs a dielectric fluid into the expandable fluid region. Each initiating actuator is actuatable between a non-actuated state and an actuated state such that actuation from the non-actuated state to the actuated state applies a force against the electrode region of the artificial muscle.Type: ApplicationFiled: March 8, 2022Publication date: September 14, 2023Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Michael P. Rowe, Shardul S. Panwar, Maduran Palaniswamy
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Publication number: 20230291333Abstract: A gravity-driven electricity generating device includes a first power unit having a first swaying frame pivoting from a first position to a second position to output a first power, thereby moving a first end of a pressing board downward and moving a second end of the pressing board upward to pivot in a first direction. A second power unit has a second swaying frame pivoting from a first position to a second position to output second power, thereby moving the first end of the pressing board upward and moving the second end of the pressing board downward to pivot in a second direction. Upward movement of the first end causes the first swaying frame to pivot in the second direction to the first position. Downward movement of the second end causes the second swaying frame to pivot in the second direction to the first position.Type: ApplicationFiled: March 7, 2023Publication date: September 14, 2023Inventor: Wen-Kuan Chen
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Publication number: 20230291334Abstract: With the aim of improving the reliability of a power conversion device for driving a motor, this power conversion device is provided with a rectifying portion for rectifying an AC voltage and outputting a DC voltage, a smoothing capacitor for smoothing the DC voltage, an inverter portion into which the DC voltage is input and which outputs AC power, an inverter drive portion for outputting a gate signal to the inverter portion, a regenerative braking portion connected in parallel with the smoothing capacitor, a regenerative braking drive portion for outputting a gate signal to the regenerative braking portion, a control portion for outputting drive signals to the inverter drive portion and the regenerative braking drive portion, a regenerative braking overcurrent detecting portion for outputting an overcurrent detection signal if the current flowing through the regenerative braking portion exceeds a determination value, and a latch portion into which the overcurrent detection signal output from the regeneratiType: ApplicationFiled: October 29, 2021Publication date: September 14, 2023Inventors: Fumihiro SATO, Keisuke TANABE, Naoki TAKATA, Daisuke MATSUMOTO, Shigetoshi YAGIHARA, Masahiro HIRAGA
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Publication number: 20230291335Abstract: A system is for a machine having an alternating current (AC) power source with a first side and a second side, one or more windings, an AC polarity detector, a Hall effect device, two or more pairs of power switches, and a motor controller. The motor controller determines which of the power switches to open or close to obtain a direction of current flow through the one or more windings based on signals from the AC polarity detector and the Hall effect device.Type: ApplicationFiled: April 19, 2023Publication date: September 14, 2023Applicant: QM Power, Inc.Inventors: Charles J. FLYNN, Cooper N. Tracy, W. Scott Hunter, Stephen B. Nichols
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Publication number: 20230291336Abstract: A high-integrity electromechanical actuator control system includes a system function controller, a plurality of actuator controllers, and at least one electromechanical actuator. Each actuator controller includes a first controller, a second controller, and a duty cycle computation circuit. The first controller receives digital actuator control commands supplied from two of the function control channels and supplies first digital duty cycle commands. The second controller receives digital actuator control commands supplied from two function control channels and supplies second digital duty cycle commands. The duty cycle computation circuit receives the first digital duty cycle commands and the second digital duty cycle commands, computes an average of the first and second duty cycle commands, and generates pulse width modulated (PWM) commutation control signals based on the computed average.Type: ApplicationFiled: January 11, 2023Publication date: September 14, 2023Applicant: HONEYWELL INTERNATIONAL INC.Inventors: Darrell Horner, Ronald Vaughan, Dean Wilkens
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Publication number: 20230291337Abstract: The present invention relates to the field of a small electrical appliance, in particular hair removal device or toothbrush, comprising an electric DC motor; a detector for acquiring a detector signal indicative of a rotational speed of the electric DC motor; and a controller for controlling the electric DC motor. The controller is adapted to: determine, based on the detector signal, a first parameter indicative of the rotational speed of the DC motor; determine, based on the detector signal, a second parameter indicative of the rotational speed of the DC motor, wherein the second parameter is different from the first parameter, and wherein the second parameter is determined based on a frequency domain analysis of the detector signal; and adjust a supply voltage of the electric DC motor based on the first parameter and the second parameter.Type: ApplicationFiled: March 9, 2023Publication date: September 14, 2023Inventors: Ferdinand Hermann, Torsten KLEMM, Timo SCHMITT
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Publication number: 20230291338Abstract: A step motor drive device includes a step motor including a rotor, stators, and a coil, a drive circuit that outputs a drive signal including a plurality of partial signals that are output intermittently, a detecting circuit that detects an electromagnetic induced current that is generated in the coil after the partial signals are output, and a control unit that controls the drive circuit. The drive circuit outputs one of the partial signals included in the drive signal to the coil, and, in response to a change in an electromagnetic induced current generated in the coil after the partial signal is output, outputs a next partial signal to the coil. The control unit determines a control method of the step motor based on an interval of the plurality of partial signals, and controls the drive circuit based on the determined control method.Type: ApplicationFiled: August 26, 2020Publication date: September 14, 2023Inventor: Yu TAKYO
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Publication number: 20230291339Abstract: An AC generating system having a power source, a controller, and an energy storage subsystem including a rotatable flywheel connected to an electrical machine which is operable to convert flywheel rotation into electrical energy and vice versa, the energy storage subsystem to transfers energy from or to the generating to maintain a target state of charge of the flywheel. The controller is arranged to monitor the AC frequency of the output power from the power source and to feed in power or extract power from the energy storage subsystem into the generating system to counteract relatively short term frequency errors due to changes in demanded load on the AC generating system. Or the power source and energy storage subsystem may be interconnected via a DC bus, and wherein the controller is arranged to monitor the DC power or voltage on the bus against a target power.Type: ApplicationFiled: July 23, 2021Publication date: September 14, 2023Inventors: Andrew Deakin, Jean Paul Zammit
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Publication number: 20230291340Abstract: Provided is a motor control device capable of improving efficiency in real time by a neural network structure that directly derives, in a learning manner, an output signal providing optimal efficiency. A motor control device 1 is adapted to control a motor 6, and includes a neural network compensator 11 that receives input signals and repeats learning based on forward propagation and backpropagation thereby to derive an output signal providing optimal efficiency. Input signals are a motor current, a motor parameter and torque, and the like, and output signals are a current command value and a current phase command value. The motor 6 is controlled on the basis of an output signal derived by the neural network compensator 11.Type: ApplicationFiled: August 2, 2021Publication date: September 14, 2023Applicants: NATIONAL UNIVERSITY CORPORATION GUNMA UNIVERSITY, SANDEN CORPORATIONInventors: Seiji HASHIMOTO, Masayuki KIGURE, Makoto SHIBUYA
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Publication number: 20230291341Abstract: A rotating electrical machine control system includes a base current instruction setting part that sets a base current instruction based on target torque of a rotating electrical machine; a correction current instruction setting part that sets a correction current instruction with a frequency determined based on torque ripple; and a current control part that performs current feedback control to compute a voltage instruction which is an instruction value of a voltage to be applied to the rotating electrical machine. The current control part includes a first current control part whose control target is a component of the base current instruction; and a second current control part whose control target is a component of the correction current instruction. A gain of the second current control part is set to be low compared to a gain of the first current control part.Type: ApplicationFiled: August 31, 2021Publication date: September 14, 2023Applicants: AISIN CORPORATION, BluE Nexus CorporationInventors: Arinori SHIMADA, Daisuke YAMASHITA, Yomei HAKUMURA, Kenji MORIMOTO
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Publication number: 20230291342Abstract: A motor detection method includes the following steps. An excitation current command is provided to a motor device, and the motor device is driven to rotate at the first angle. The first feedback angle of the motor device in the first resting position is detected and obtained. The motor device is driven to rotate at the second angle according to the excitation current command. The second feedback angle of the motor device in the second resting position is detected and obtained. The magnetic pole offset angle of the motor device is calculated according to the first feedback angle and the second feedback angle.Type: ApplicationFiled: August 18, 2022Publication date: September 14, 2023Inventors: Shao-Kai TSENG, Yuan-Qi HSU, Chen-Yeh LEE
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Publication number: 20230291343Abstract: A motor drive system (300) for controlling an operation of an electric machine (330) on construction equipment (100), the system comprising a frequency converter (320) and a control unit (340), where the frequency converter (320) is arranged to receive electrical power from electrical mains (310) over a first electrical interface (160) at a first AC frequency and to convert the first AC frequency into a second AC frequency for output on a second electrical interface (326) to the electric machine (330), where the control unit (340) is arranged to control (360) the frequency converter (320) to generate the second AC frequency in dependence of a configurable maximum current to be drawn over the first electrical interface (160).Type: ApplicationFiled: March 9, 2023Publication date: September 14, 2023Inventors: Masoud Varshosaz, Victor Hofmeijer
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Publication number: 20230291344Abstract: An electric motor control device includes a current detection unit, an interface unit, a switching unit, and an arithmetic processing unit. A detection signal of a current detected by the current detection unit is input to the interface unit. The interface unit includes a plurality of filters having time constants different from one another, and performs filtering processing on the detection signal. The switching unit controls power supplied to an electric motor. The arithmetic processing unit uses, as a selected filter, a filter selected from among the plurality of filters based on the length of a control pulse. The arithmetic processing unit uses, as a detected current value, a value obtained by A/D conversion of a processed signal that is the detection signal on which the filtering processing has been performed with the selected filter.Type: ApplicationFiled: January 25, 2023Publication date: September 14, 2023Applicant: Mitsubishi Electric CorporationInventors: Akihiro SAWADA, Makoto Matsumoto
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Publication number: 20230291345Abstract: A radiant energy spectrum converter apparatus comprising: a first ellipsoid and a second ellipsoid overlapping the first ellipsoid to form an internal cavity, the first ellipsoid comprising a first upper half and a first lower half and the second ellipsoid comprising a second upper half and a second lower half; a port for permitting entry of incident radiation into the apparatus; a receiver for absorbing selected portions of the incident radiation and emitting secondary radiation; an internal cavity having a reflective surface for reflecting the secondary radiation such that the reflected secondary radiation from the first ellipsoid and the second ellipsoid converges on a first focal point; and wherein the receiver is located at the first focal point.Type: ApplicationFiled: July 9, 2021Publication date: September 14, 2023Inventors: Nima Talebzadeh, Paul O'Brien
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Publication number: 20230291346Abstract: A solar mounting system stored within a shipping container prior to deployment and wherein the mounting system includes: laterally extending beams that extend outwardly from the top of the shipping container; support mounts connected to the laterally extending beams at positions over the top of the shipping container and at the ends of the laterally extending beams; a first set of higher longitudinal beams spanning between the support mounts; a second set of lower longitudinal beams spanning between ends of the laterally extending beams at positions beside the shipping container; a plurality of PV module support rails extending between the first and second sets of longitudinal beams; and PV modules mounted onto the PV module support rails such that the PV modules slope downwardly from above the center to beyond the sides of the shipping container.Type: ApplicationFiled: March 8, 2023Publication date: September 14, 2023Applicant: GIVEPOWER FOUNDATIONInventors: Benjamin MATERNA, Theresa SWEENEY, Kyle STEPHAN
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Publication number: 20230291347Abstract: Some embodiments of the present disclosure relate to methods that may include attaching a first photovoltaic module and a second photovoltaic module to a back-sheet, wherein the first photovoltaic module includes a first end and a second end, and wherein the second photovoltaic module includes a first end and a second end; forming a seam on the back-sheet between the first and second photovoltaic modules; forming an electrical connection between the first and second photovoltaic modules by electrically connecting the first end of the first photovoltaic module to the second end of the second photovoltaic module; and separating the first and second photovoltaic modules along the seam while maintaining the electrical connection between the first and second photovoltaic modules. Some embodiments of the present disclosure relate to roofing systems that may include photovoltaic modules.Type: ApplicationFiled: May 12, 2023Publication date: September 14, 2023Inventors: Gabriela Bunea, Thierry Nguyen, Richard Perkins, Nicholas Boitnott, David Kavulak, Lewis Abra
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Publication number: 20230291348Abstract: A supporting including at least two supporting frameworks with supporting masts which are respectively connected to one another by means of a supporting cable, on which supporting cable the solar modules or ceiling elements are supported by means of vertical pressure rods which are connected to the supporting cable by means of fastening elements and which have a pretensioning force applied to them via at least one pretensioning cable, which pretensioning force pushes the pressure rods in the downward direction towards the supporting cable which is connected to said pressure rods, is distinguished in that the fastening elements comprise cable rollers or sliding elements by means of which the pressure rods are displaceably coupled to the supporting cables and pretensioning cables, and in that the pressure rods are coupled to the supporting masts non-displaceably in the horizontal direction by means of positioning cables in order to prevent a horizontal movement.Type: ApplicationFiled: April 30, 2021Publication date: September 14, 2023Inventor: Michael Richter
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Publication number: 20230291349Abstract: A support for solar tracker photovoltaic modules, is provided with the modules (1) limited by a frame (2) intended to support a photovoltaic panel and the tracker is equipped with a rotation shaft (3), the support includes: a front portion (4), in turn comprising a hollow portion (6) which defines an inner chamber (7), wherein said hollow portion (6) includes two lateral surfaces (8), an upper surface (9) between the lateral surfaces (8) and a lower surface (10), a tab (11) that protrudes perpendicularly to the upper surface (9), the tab (11) and the upper surface (9). At least two holes (13) located on the two lateral surfaces (8) of the hollow portion (6), a rear portion (14) in turn include a housing (15) for the rotation shaft (3) to the rear portion (14), and a connecting portion (16).Type: ApplicationFiled: October 27, 2021Publication date: September 14, 2023Inventors: Lucio Ayllon Gomez, Juan Carlos Gonzalez Soria, Montserrat Bonjoch Manonelles, Maria Pilar Segura Alcaide
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Publication number: 20230291350Abstract: A solar cell module is constructed of a plurality of photovoltaic cells that are supported on a support surface of a support structure with the cells positioned side-by-side. The side-by-side arrangements of the cells form a first photovoltaic layer with a first exterior surface and a second photovoltaic layer with a second exterior surface. The first exterior surface and the second exterior surface extend outwardly from the support surface and oppose each other with a void between the exterior surfaces. The void enables photons from sunlight to enter into the void and reflect between the first exterior surface and the second exterior surface producing energy from the plurality of photovoltaic cells.Type: ApplicationFiled: March 8, 2023Publication date: September 14, 2023Inventor: Preston Gabriel Nelson
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Publication number: 20230291351Abstract: A power switch circuit includes a switch circuit, a solar photovoltaic panel and a detection circuit and connected with the solar photovoltaic panel and the switch circuit respectively. The solar photovoltaic panel is configured to provide an electrical signal to the detection circuit, the detection circuit is configured to detect whether the power in the electric signal exceeds a preset threshold, and when the power exceeds the preset threshold, the detection circuit outputs a first control signal to the switch circuit to turn on the switch circuit; when the switch circuit is turned on, the solar photovoltaic panel supplies power to the load through the switch circuit, and the switch circuit feeds back a second control signal to the detection circuit so that the detection circuit stops working.Type: ApplicationFiled: May 17, 2023Publication date: September 14, 2023Inventors: Geng Qin, Xiangzhu Yin, Hui Ma, Hua Zhang
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Publication number: 20230291352Abstract: An oscillator acceleration circuit, configured to accelerate the start-up of an oscillator, wherein the oscillator has an input terminal and an output terminal. The oscillator acceleration circuit includes an inverting amplifier, a feedback resistor and an acceleration circuit; the inverting amplifier has an input terminal and an output terminal correspondingly coupled to the input terminal and the output terminal of the oscillator. The feedback resistor is coupled between the input terminal and the output terminal of the oscillator, and the acceleration circuit is coupled between the input terminal and the output terminal of the oscillator. The acceleration circuit is configured to provide a transfer function, wherein the transfer function is the same as the transfer function provided by a resistor and a capacitor connected in parallel; wherein the resistance of the resistor is less than zero.Type: ApplicationFiled: February 27, 2023Publication date: September 14, 2023Inventor: BO XIN YANG
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Publication number: 20230291353Abstract: A circuit board includes: a semiconductor substrate including a first surface and a second surface located at an opposite side from the first surface; a circuit provided at a first surface side; a first external electrode provided at a second surface side; a heater provided at the second surface side; and a plurality of through electrodes penetrating the first surface and the second surface and electrically coupling the circuit and the first external electrode or the heater. The heater and the first external electrode do not overlap each other in a plan view.Type: ApplicationFiled: March 9, 2023Publication date: September 14, 2023Inventor: Koichi Mizugaki
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Publication number: 20230291354Abstract: An oscillator includes a crystal oscillation circuit configured to generate an oscillation signal having a natural frequency, an injection circuit configured to inject a first injection signal and a second injection signal into the crystal oscillation circuit, a dithering circuit configured to transmit a first control signal for generating the first injection signal to the injection circuit, and a phased-lock loop (PLL) circuit configured to lock a phase of the first injection signal to the natural frequency, to transmit a second control signal for generating the second injection signal to the injection circuit.Type: ApplicationFiled: January 10, 2023Publication date: September 14, 2023Applicant: Samsung Electronics Co., Ltd.Inventors: Jaehong JUNG, Seungjin Kim, Seunghyun Oh
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Publication number: 20230291355Abstract: An oscillation circuit includes an oscillator (X1), capacitors (C1, C2) connected between two terminals of the oscillator (X1), and an amplification circuit (A1) having an input terminal connected to a connecting point between the oscillator (X1) and the capacitor (C1) and an output terminal connected to a connecting point between the capacitor (C1) and the capacitor (C2).Type: ApplicationFiled: May 7, 2021Publication date: September 14, 2023Inventors: Masaya NOHARA, Noritoshi KIMURA
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Publication number: 20230291356Abstract: Multi-level envelope trackers with an analog interface are provided herein. In certain embodiments, an envelope tracking system for generating a power amplifier supply voltage for a power amplifier is provided. The envelope tracking system includes a multi-level supply (MLS) DC-to-DC converter that outputs multiple regulated voltages, and an MLS modulator that controls selection of the regulated voltages over time based on an analog envelope signal corresponding to an envelope of the RF signal amplified by the power amplifier.Type: ApplicationFiled: April 14, 2023Publication date: September 14, 2023Inventors: Florinel G. Balteanu, Serge Francois Drogi, Shayan Farahvash, David Richard Pehlke
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Publication number: 20230291357Abstract: Embodiments of the present application provide a method for predicting envelope features. The method includes: according to baseband data or data after modulation mapping, a peak value of a radio frequency envelope signal, a time point corresponding to the peak value, a valley point of the radio frequency envelope signal and a time point corresponding to the valley point are predicted; according to the valley point and the time point corresponding thereto, a generated reference value is sent to a low-bandwidth control signal generating module to obtain a control signal; according to adjacent valley point and peak point, and time points corresponding thereto, generated status information is sent to a high-bandwidth control signal generating module to obtain a control switch signal; and when in an ascending status, according to a key information string, a slope k of a connecting line is determined, and a corresponding filter inductor is turned on.Type: ApplicationFiled: May 22, 2023Publication date: September 14, 2023Applicant: Nanjing University Of Posts And TelecommunicationsInventors: Yan ZHOU, Guodong LIU, Wenxuan XIE, Yan FAN, Zhihao ZHANG
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Publication number: 20230291358Abstract: A high-frequency device includes a metal base, a dielectric substrate mounted on the metal base, an insulator layer provided on the metal base, covering the dielectric substrate, and having a dielectric constant smaller than that of the dielectric substrate, and a first line that overlaps the dielectric substrate as seen from a thickness direction of the insulator layer and is provided on an upper surface of the insulator layer to form a first microstrip line.Type: ApplicationFiled: January 25, 2023Publication date: September 14, 2023Applicant: Sumitomo Electric Industries, Ltd.Inventor: Tatsuya HASHINAGA
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Publication number: 20230291359Abstract: Disclosed is an amplifier having a carrier amplifier configured as a common-emitter carrier power stage and a peaking amplifier configured as a common-emitter peaking power stage. Further included is power adaptive biasing circuitry coupled between the carrier amplifier and the peaking amplifier, wherein the power adaptive biasing circuitry is configured to sense direct current base voltages of the common-emitter carrier power stage and to generate control currents that debias the common-emitter carrier power stage in response to the current base voltages of the common-emitter carrier power stage.Type: ApplicationFiled: February 2, 2023Publication date: September 14, 2023Inventors: Ming Ji, Douglas Andrew Teeter
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Publication number: 20230291360Abstract: Circuits and methods for improving the noise figure (NF) of an amplifier, particularly an LNA, in high-gain modes while improving the IIP3 of the amplifier in low-gain modes. The source of an amplifier common-source FET is coupled to circuit ground thorough a degeneration circuit comprising a two-port inductor and a bypass switch coupled in parallel with the inductor. A switched feedback circuit is coupled between the gate of the common-source FET and a feedback node in the amplifier output signal path. During a low gain mode, the inductor is entirely bypassed and the enabled feedback circuit lowers the input impedance of the common-source FET and reduces the gain of the amplifier circuit, essentially eliminating the need for a degeneration inductor. During a high gain mode, the source of the common-source FET is coupled to circuit ground through the inductor and the feedback circuit is disabled. Other gain modes are supported.Type: ApplicationFiled: March 16, 2023Publication date: September 14, 2023Inventors: Rong Jiang, Khushali Shah, Ravindranath D. Shrivastava, Parvez H. Daruwalla
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Publication number: 20230291361Abstract: A high-speed transimpedance amplifier with bandwidth extension feature over full temperature range and bandwidth extension method belong to the field of integrated circuit. The present invention solves the problem existed in boosting core amplifier bandwidth technology over full temperature range. The present invention includes a preamplifier TIA, a phase splitting stage PS, a pre-driver stage Pre-Drive, an output buffer BUFF and an offset cancelation circuit OC. The preamplifier TIA adopts the gate-drain voltage cancelation technology to expand the bandwidth, so that its ?3 dB bandwidth is greater than twice the closed-loop bandwidth of the first-order TIA. The pre-driver stage Pre-Drive is used to drive the output buffer BUFF. By adjusting the source-level negative feedback capacitance value of the pre-driver stage Pre-Drive circuit to generate a high-frequency gain that varies with temperature, the preamplifier TIA bandwidth differences under different temperature conditions are compensated.Type: ApplicationFiled: December 24, 2021Publication date: September 14, 2023Inventors: Zhicong LUO, Jinghu LI, Riqing CHEN, Haofan DING, Xin HONG, Jianhai YU, Hanghui TU
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Publication number: 20230291362Abstract: Disclosed is a temperature compensation circuit including: a first current path to perform temperature compensation on a second transistor in a first temperature range; and a second current path having a diode which goes to an on state in a second temperature range higher than the first temperature range, to perform temperature compensation on the second transistor by means of a current flowing through the diode in the on state.Type: ApplicationFiled: May 16, 2023Publication date: September 14, 2023Applicant: Mitsubishi Electric CorporationInventor: Takuma TORII
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Publication number: 20230291363Abstract: Circuits and methods for maintaining loop stability and good load regulation in low loop gain LDO regulator circuits. Embodiments encompass LDO regulator circuits that include an offset error correction circuit that generates an opposing voltage VOFFSET as a function of load current to substantially cancel out variations in VOUT that would otherwise occur due to load regulation limitations of the LDO regulator circuits. Embodiments use VOFFSET to imbalance currents in differential paths in a last-stage LDO error-amplifier so that an offset is propagated to a pair of inputs to the error-amplifier, thereby altering the output voltage VOUT to a corrected value. Benefits include improved LDO load regulation even when feedback loop gain is low, the available of both digital and analog implementations, high LDO accuracy and less variation of the output voltage VOUT, and suitability for implementation in integrated circuits for applications such as high precision power supplies.Type: ApplicationFiled: March 15, 2023Publication date: September 14, 2023Inventor: Satish Vangara
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Publication number: 20230291364Abstract: Embedded blocking capacitor structures for wideband amplifier circuits are disclosed. A wideband amplifier circuit includes transistors that output radio frequency (RF) signals. An embedded blocking capacitor structure is operably connected between the terminals of the transistors and an RF output. The embedded blocking capacitor structure distributes a bias voltage to the terminals of the transistors and blocks the bias voltage from passing to the RF output. The embedded blocking capacitor structure also propagates an RF signal to an RF output.Type: ApplicationFiled: March 8, 2022Publication date: September 14, 2023Inventor: Charles Forrest Campbell
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Publication number: 20230291365Abstract: Systems and methods for calibrating a wireless power transmitter is described. A wireless power transmitter can include a controller and an amplifier module. The amplifier module can include an amplifier configured to amplify a voltage converted from a current proportional to power consumed by a wireless power transmitter, and a circuit connected to the amplifier. The circuit can be configured to receive a control signal from the controller. The circuit can be further configured to perform time division multiplexing on an output of the amplifier according to the control signal. A time division multiplexed output of the amplifier can include calibration data of the amplifier. The amplifier can be configured to output the time division multiplexed output to the controller.Type: ApplicationFiled: March 10, 2022Publication date: September 14, 2023Applicant: Renesas Electronics America Inc.Inventors: Gustavo James MEHAS, Marcin Kamil AUGUSTYNIAK, Giovanni FIGLIOZZI
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Publication number: 20230291366Abstract: The present disclosure relates to a device comprising a first transimpedance amplifier comprising a first amplification stage with a first MOS transistor, a second transimpedance amplifier comprising a second amplification stage with a second MOS transistor, and a current source series-connected with the first and second amplification stages, the current source having a first terminal coupled to the drain of the first MOS transistor and a second terminal coupled to the drain of the second MOS transistor.Type: ApplicationFiled: February 24, 2023Publication date: September 14, 2023Inventors: Vratislav Michal, Nicolas Moeneclaey, Jean-Luc Patry
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Publication number: 20230291367Abstract: Semiconductor devices are provided that include a Group III nitride-based semiconductor layer structure. A first metal layer is formed on an upper surface of the semiconductor layer structure, a first dielectric layer is formed on an upper surface of the first metal layer, and a second metal layer is formed on an upper surface of the first dielectric layer. The first metal layer, the first dielectric layer and the second metal layer form a first capacitor. A second dielectric layer is formed on an upper surface of the second metal layer, a third dielectric layer is formed on an upper surface of the second dielectric layer, and a third metal layer is formed on upper surfaces of the second and third dielectric layers. The second metal layer, the second dielectric layer and the third metal layer form a second capacitor that is stacked on the first capacitor.Type: ApplicationFiled: March 8, 2022Publication date: September 14, 2023Inventors: Jeremy Fisher, Dan Namishia, Scott Sheppard
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Publication number: 20230291368Abstract: Methods and devices to implement efficiently an AUX terminal in RF front end receivers using LNAs are described. The described methods implement a smaller number of switches resulting in an overall performance improvement by reducing the noise figure at the input of the LNA. The presented devices can be used in low/high gain and bypass modes and can accommodate an arbitrary number of bands over a wide frequency range.Type: ApplicationFiled: March 28, 2023Publication date: September 14, 2023Inventors: Rong JIANG, Khushali SHAH
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Publication number: 20230291369Abstract: Power amplifier systems including field trapper structures are disclosed. In embodiments, the power amplifier system includes a printed circuit board (PCB), a power amplifier module (PAM), and a field trapper structure. The PAM includes, in turn, a topside radio frequency (RF) input terminal, topside RF output terminal, a PAM topside surface on which the topside RF input terminal and the topside RF output terminal are located. The PAM is mounted to the PCB in an inverted orientation such that the PAM topside surface is positioned adjacent and faces a module mount region provided on a frontside of the PCB. The field trapper structure includes a first field trapper patch, which extends parallel to the PCB frontside, is composed of an electrically-conductive material, and is located within or adjacent the module mount region in the thickness direction.Type: ApplicationFiled: March 14, 2022Publication date: September 14, 2023Inventors: Kevin Kim, Vikas Shilimkar, Lakshminarayan Viswanathan
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Publication number: 20230291370Abstract: Power amplifiers with adaptive bias for envelope tracking applications are provided herein. In certain embodiments, an envelope tracking system includes a power amplifier that amplifies a radio frequency (RF) signal and that receives power from a power amplifier supply voltage, and an envelope tracker that controls a voltage level of the power amplifier supply voltage based on an envelope of the RF signal. The power amplifier includes a current mirror having an input that receives a reference current, an output electrically connected to the power amplifier supply voltage, and a node that outputs a gate bias voltage. The power amplifier further includes a field-effect transistor that amplifies the radio frequency signal and a first depletion-mode transistor having a gate connected to the node of the current mirror and a source connected to a gate of the field-effect transistor.Type: ApplicationFiled: April 28, 2023Publication date: September 14, 2023Inventors: Aleksey A. Lyalin, Huiming Xu, Shayan Farahvash, Georgios Palaskas
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Publication number: 20230291371Abstract: A radio frequency module includes a first power amplifier, a second power amplifier, a filter, a switch, and a matching circuit. The first power amplifier outputs a first amplified signal. The second power amplifier outputs a second amplified signal. The filter allows the first amplified signal and the second amplified signal to pass through. The switch has a first terminal and a second terminal. The first terminal is connected to an output portion of the first power amplifier. The second terminal is connected to the filter. The switch changes over connection and disconnection of the first terminal and the second terminal. The matching circuit is connected between an output portion of the second power amplifier and a signal path between the second terminal of the switch and the filter.Type: ApplicationFiled: May 18, 2023Publication date: September 14, 2023Inventor: Masakazu HIROBE
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Publication number: 20230291372Abstract: An amplifier circuit 1001 with a variable temperature coefficient of a gain is an amplifier circuit with a variable temperature coefficient of a gain in which a variable resistor VR is connected between a first signal and a second signal having temperature coefficients of an amplification factor different from each other, a variable output of the variable resistor VR is connected to an input of a buffer amplifier Ub, and an output of the buffer amplifier Ub is used as an output Vo, wherein the first signal is an output of a first temperature coefficient circuit 100, and the second signal is an output of another amplifier circuit 501.Type: ApplicationFiled: March 7, 2023Publication date: September 14, 2023Inventors: Shingo SOBUKAWA, Takehito KAMIMURA, Tatsuru TAMORI
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Publication number: 20230291373Abstract: Techniques for setting a gain of an amplifier circuit in which the external resistor of the amplifier circuit is used to determine an internal gain setting to select. A voltage across the external resistor can be compared to an on-chip reference, and then used to program the desired gain. The techniques can mitigate or eliminate the need for a high-accuracy external resistor and can allow substantial improvements in initial gain accuracy and gain drift for existing boards and/or systems with only a bill of material change.Type: ApplicationFiled: March 9, 2022Publication date: September 14, 2023Inventor: Gregory Lawrence Disanto
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Publication number: 20230291374Abstract: An amplification system which includes a source of electrical audio signals, a first amplifier, a second amplifier, a plurality of loudspeakers, and a first phase of the first amplifier and a second phase of the second amplifier reproduced in parallel having a time delay between first and second phase amplification for out of phase correction. The time delay is configured to correct poor sound signals while amplifying weaker harmonics and sound signals of different frequencies, thereby adjusting sound output of the amplification system and acoustical characteristics of a room. The amplification system is useful for providing improved sound quality and increased audio efficiencies.Type: ApplicationFiled: June 28, 2018Publication date: September 14, 2023Inventor: Kurt P. Hahn
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Publication number: 20230291375Abstract: An automatic gain control circuit includes a control circuit for controlling a power detector, wherein the control circuit detects a power level change of an input signal and generates a control signal to the power detector so that the power detector can respond to the power level change of the input signal quickly.Type: ApplicationFiled: March 14, 2022Publication date: September 14, 2023Inventor: Kuan-Ming Chen
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Publication number: 20230291376Abstract: A method and structure for a transfer process for an acoustic resonator device. In an example, a bulk acoustic wave resonator (BAWR) with an air reflection cavity is formed. A piezoelectric thin film is grown on a crystalline substrate. A first patterned electrode is deposited on the surface of the piezoelectric film. An etched sacrificial layer is deposited over the first electrode and a planarized support layer is deposited over the sacrificial layer, which is then bonded to a substrate wafer. The crystalline substrate is removed and a second patterned electrode is deposited over a second surface of the film. The sacrificial layer is etched to release the air reflection cavity. Also, a cavity can instead be etched into the support layer prior to bonding with the substrate wafer. Alternatively, a reflector structure can be deposited on the first electrode, replacing the cavity.Type: ApplicationFiled: May 22, 2023Publication date: September 14, 2023Inventors: Dae Ho KIM, Mary WINTERS, Ramakrishna VETURY, Jeffrey B. SHEALY