Power Control, Power Supply, Or Bias Voltage Supply Patents (Class 455/127.1)
  • Patent number: 11545945
    Abstract: An apparatus and method for calibrating an envelope tracking (ET) lookup table (LUT) are provided. An ET power management apparatus includes a power amplifier configured to amplify a radio frequency (RF) signal from a time-variant input power to a time-variant output power linearly related to the time-variant input power. A calibration circuit is employed to receive a time-variant output power feedback nonlinearly related to the time-variant input power, determine a linear relationship between the time-variant input power and the time-variant output power based on the time-variant output power feedback, and calibrate the ET LUT based on the determined linear relationship. As a result, it is possible to improve accuracy of the ET LUT to thereby improve operating efficiency and linearity of the power amplifier.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: January 3, 2023
    Assignee: Qorvo US, Inc.
    Inventor: Nadim Khlat
  • Patent number: 11546006
    Abstract: A method of a wireless transmitter is disclosed. The method is for mitigation of distortion caused by non-linear hardware components of the transmitter, wherein mitigation of distortion comprises mitigating at least one intermodulation component, wherein the transmitter is configured to process an input signal having an input signal spectrum, and wherein the transmitter comprises two or more signal branches, each signal branch comprising a respective non-linear hardware component. The method comprises modifying the input signal for a first one of the signal branches by applying a first phase shift to a first part of the input signal spectrum, wherein the first phase shift has a first sign and a first absolute value, and applying a second phase shift to a second part of the input signal spectrum. The second phase shift has a second sign which is opposite to the first sign, and a second absolute value which is equal to the first absolute value. The first and second parts are non-overlapping.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: January 3, 2023
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
    Inventors: Henrik Sjöland, Lars Sundström
  • Patent number: 11535272
    Abstract: A vehicle system includes a first vehicle platform including a first computer configured to operate by means of electric power from a first electric power source and perform traveling control of a vehicle, a second vehicle platform including a second computer configured to operate by means of electric power from a second electric power source different from the first electric power source and perform traveling control of the vehicle, and an autonomous driving platform including a third computer configured to perform autonomous driving control of the vehicle by transmitting a control instruction including data for autonomously driving the vehicle to the first computer when the first vehicle platform is in a normal state and perform autonomous stoppage control of the vehicle by transmitting a control instruction including data for causing the vehicle to autonomously stop to the second computer when the first vehicle platform is in an abnormal state.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: December 27, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Eisuke Ando
  • Patent number: 11539329
    Abstract: A wideband envelope modulator comprises a direct current (DC)-to-DC switching converter connected in series with a linear amplitude modulator (LAM). The DC-DC switching converter includes a pulse-width modulator that generates a PWM signal with modulated pulse widths representing a time varying magnitude of an input envelope signal or a pulse-density modulator that generates a PDM signal with a modulated pulse density representing the time varying magnitude of the input envelope signal, a field-effect transistor (FET) driver stage that generates a differential PWM or PDM drive signal, a high-power output switching stage that is driven by the PWM or PDM drive signal, and an output energy storage network including a low-pass filter (LPF) of order greater than two that filters a switching voltage produced at an output switching node of the high-power output switching stage.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: December 27, 2022
    Assignee: Eridan Communications, Inc.
    Inventor: Waclaw Godycki
  • Patent number: 11539442
    Abstract: A method for automatic power and modulation management in a communication network includes (1) generating a management function of (a) mutual information per symbol (MIPS) of the communication network and (b) output power (P) of a transmitter of the communication network, determining a selected MIPS value and a selected P value which achieve a maximum value of the management function, and causing the transmitter of the communication network to operate according to the selected MIPS value and the selected P value.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: December 27, 2022
    Assignee: Cable Television Laboratories, Inc.
    Inventors: Mu Xu, Zhensheng Jia, Luis Alberto Campos, Chris Stengrim
  • Patent number: 11532895
    Abstract: A radio frequency module includes a first substrate having a first principal surface and a second principal surface on the opposite side to the first principal surface; a signal terminal which is provided on the first principal surface and through which a signal is transmitted to and received from an external circuit; a power supply terminal that is provided on the second principal surface and is supplied with a power supply signal; an antenna; and a radio frequency electronic component that is electrically connected to the signal terminal, the power supply terminal and the antenna, and controls transmission and reception of the antenna based on the signal and the power supply signal.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: December 20, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Hideki Ueda
  • Patent number: 11522456
    Abstract: According to some example embodiments, an apparatus includes a buck-boost converter, a first buck converter connected at an output terminal of the buck-boost converter, a second buck converter connected at the output terminal of the buck-boost converter, a first LA including a first supply voltage input connected to the output terminal of the buck-boost converter, and an output terminal connected to an output terminal of the first buck converter, where the first LA is configured to provide a first modulated supply voltage to a first PA of a first transmitter, and a second LA including a second supply voltage input connected to the output terminal of the buck-boost converter, and an output terminal connected to an output terminal of the second buck converter, where the second LA is configured to provide a second modulated supply voltage to a second PA of a second transmitter.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: December 6, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yongsik Youn, Takahiro Nomiyama, Younghwan Choo, Dongsu Kim
  • Patent number: 11482293
    Abstract: A control system includes a plurality of driving circuits coupled in series, which includes a first driving circuit and a second driving circuit. The first driving circuit includes a first receiver, a first transmitter and a replica receiver. The first transmitter is coupled to the first receiver, and the replica receiver is coupled to an output terminal of the first transmitter. The second driving circuit, coupled to the first driving circuit, includes a second receiver and a second transmitter. The second receiver is coupled to the first transmitter, and the second transmitter is coupled to the second receiver.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: October 25, 2022
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Che-Wei Yeh, Keko-Chun Liang, Yu-Hsiang Wang, Yong-Ren Fang, Yi-Chuan Liu, Yi-Yang Tsai, Po-Hsiang Fang
  • Patent number: 11469223
    Abstract: A current monitor circuit comprises a sense transistor disposed in a first voltage domain; a reference transistor disposed in a second voltage domain isolated from the first voltage domain; and sensing circuitry configured to determine if a current in the sense transistor is greater than or less than a specified current using a current in the reference transistor.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: October 11, 2022
    Assignee: Analog Devices International Unlimited Company
    Inventors: David F. Schneider, Trevor W. Barcelo
  • Patent number: 11463117
    Abstract: A radio frequency module includes: a power amplifier; an inductor connected between the power amplifier and a power-supply terminal to supply a power-supply voltage to the power amplifier; a capacitor connected between a ground and a node that is located between the inductor and the power-supply terminal; a module substrate including a first principal surface and a second principal surface opposite to each other; and a plurality of post electrodes disposed on the second principal surface. Here, the inductor is disposed on the first principal surface or inside of the module substrate, and at least one of the power amplifier or the capacitor is disposed on the second principal surface.
    Type: Grant
    Filed: February 5, 2021
    Date of Patent: October 4, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Naoya Matsumoto
  • Patent number: 11451249
    Abstract: A radio-frequency module includes a module substrate; a power amplifier; a first switch connected to an input terminal of the power amplifier; a second switch connected to an output terminal of the power amplifier; and a switch control circuit that controls the first switch and the second switch. The first switch, the second switch, and the switch control circuit are included in a semiconductor IC being integrated into a single chip. The power amplifier and the semiconductor IC are mounted on or above the module substrate. When the module substrate is viewed in a plan view, in the semiconductor IC, the switch control circuit is disposed between the first switch and the second switch.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: September 20, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Reiji Nakajima
  • Patent number: 11444703
    Abstract: A system for generating a self-receive signal includes: a signal generator; a first signal processor; a second signal processor; and an antenna. The system also includes a first passive coupling device: defining a first input port electromagnetically coupled to the signal generator; defining a first transmitted port; defining a first coupled port electromagnetically coupled to the first signal processor; and characterized by a first phase balance between the first transmitted port and the first coupled port. The system further includes a second passive coupling device: defining a second input port electromagnetically coupled to the antenna; defining a second transmitted port electromagnetically coupled to the first transmitted port; defining a second coupled port electromagnetically coupled to the second signal processor; and characterized by a second phase balance between the second transmitted port and the second coupled port substantially similar to the first phase balance.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: September 13, 2022
    Assignee: ZaiNar, Inc.
    Inventors: Philip Kratz, Mainak Chowdhury
  • Patent number: 11444591
    Abstract: A method for controlling a signal envelope shape of modulation pulses in a driver of a wireless transmitter includes supplying a first voltage to the driver during a non-modulated state, supplying a second voltage configurable by a configurable modulation index value to the driver during a modulated state, switching between the non-modulated state and the modulated state comprising setting the modulation index value to configure the second voltage level at the same level as the first voltage and then switching between supplying the first voltage to the driver and supplying the second voltage to the driver, and filtering to a limited bandwidth the variations of the second voltage resulting from configuring the modulation index value.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: September 13, 2022
    Assignees: STMICROELECTRONICS RAZVOJ POLPREVODNIKOV D.O.O., STMICROELECTRONICS (ALPS) SAS, STMICROELECTRONICS SA
    Inventors: Kosta Kovacic, Christophe Grundrich, Bruno Leduc, Anton Stern
  • Patent number: 11418251
    Abstract: Technology for a repeater is disclosed. The repeater can include a first port, a second port, and a third port. The repeater can include a first amplification and filtering path communicatively coupled between the first port and the second port for a first frequency range. The repeater can include a second amplification and filtering path communicatively coupled between the first port and the third port for a second frequency range. The first frequency range can be spectrally adjacent to the second frequency range in a same signal direction, and a combination of the first frequency range and the second frequency range can have a fractional bandwidth that is greater than a defined fractional bandwidth threshold ratio for a selected filter type.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: August 16, 2022
    Assignee: Wilson Electronics, LLC
    Inventor: Christopher Ken Ashworth
  • Patent number: 11398852
    Abstract: An envelope tracking (ET) power amplifier apparatus is provided. The ET power amplifier apparatus includes a pair of power amplifiers configured to amplify a pair of radio frequency (RF) signals based on a pair of ET voltages. In one aspect, each of the RF signals is split before amplification and recombined after amplification. As such, the power amplifiers can operate based on half the peak power of the RF signals to help improve operating efficiency of the power amplifiers. In another aspect, the RF signals are pre-processed prior to amplification to form a pair of composite RF signals with similar average power such that the power amplifiers can operate based on substantially similar ET voltages. As a result, it may be possible to employ a single ET integrated circuit (ETIC) to provide the ET voltages, thus helping to reduce cost and footprint of the ET power amplifier apparatus.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: July 26, 2022
    Assignee: QORVO US, INC.
    Inventor: Nadim Khlat
  • Patent number: 11395173
    Abstract: A wireless device receives configuration parameters of licensed primary cell(s) of a primary TAG; and a first and a second unlicensed secondary cells, of a secondary TAG. Both the first and second unlicensed secondary cells are selected to jointly serve as reference cells for pathloss measurement of the second unlicensed secondary cell. The selection is based on the first and second unlicensed secondary cells being activated unlicensed secondary cells; and in a same secondary TAG. A measurement is made of a pathloss reference value for the second unlicensed secondary cell based on: a received signal power of the first unlicensed secondary cell; and a received signal power of the second unlicensed secondary cell. A determination is made whether a channel associated with the second unlicensed secondary cell is clear. Uplink transport blocks with a transmission power calculated employing the pathloss reference value is transmitted via the second unlicensed secondary cell.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: July 19, 2022
    Assignee: Ofinno, LLC
    Inventor: Esmael Hejazi Dinan
  • Patent number: 11381265
    Abstract: A radio frequency module includes: a module board including a first principal surface and a second principal surface; a first power amplifier; a second power amplifier; a first output transformer connected to the first power amplifier; and a second output transformer connected to the second power amplifier. The first power amplifier and the second power amplifier are disposed on the first principal surface. The first output transformer and the second output transformer are disposed inside the module board or on the second principal surface.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: July 5, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Naoya Matsumoto, Takayuki Shinozaki
  • Patent number: 11374538
    Abstract: Envelope tracking systems for power amplifiers are provided herein. In certain embodiments, an envelope tracker supplies power to a power amplifier that amplifies an RF signal. The envelope tracker includes a multi-level switching circuit that generates an output current based on an envelope signal indicating an envelope of the RF signal. The envelope tracker further includes a combiner that combines a DC voltage with the output current of the multi-level switching circuit to generate a power amplifier supply voltage for the power amplifier. Accordingly, the output current of the multi-level switching circuit and a DC voltage are combined to generate the power amplifier supply voltage. Implementing the envelope tracking system in this manner can provide enhanced efficiency and/or higher bandwidth relative to an envelope tracking system in which a multi-level switching circuit directly outputs a power amplifier supply voltage.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: June 28, 2022
    Assignee: Skyworks Solutions, Inc.
    Inventors: Serge Francois Drogi, Florinel G. Balteanu, David Richard Pehlke
  • Patent number: 11368926
    Abstract: Various aspects of the disclosure relate to reporting a power limit along with an indication of at least one constraint upon which the power limit is based. In some aspects, the constraint is a radio frequency (RF) exposure constraint. For example, a power headroom limit calculated by a first apparatus may be constrained by a specific absorption rate (SAR) limit or a maximum permissible exposure (MPE) limit. The first apparatus may thus report to a second apparatus the current power headroom limit of the first apparatus along with an indication of whether the power headroom limit is constrained by an SAR limit or an MPE limit (e.g., as opposed to being constrained by a maximum transmit power limit). The second apparatus may then schedule the first apparatus taking into account the power headroom limit and the corresponding constraint (e.g., maximum power or SAR/MPE).
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: June 21, 2022
    Assignee: QUALCOMM Incorporated
    Inventors: Ashwin Sampath, Andrzej Partyka, Joseph Burke, Ozge Koymen, Raghu Challa
  • Patent number: 11368176
    Abstract: A transmission unit includes: a power amplification module that amplifies the power of an input signal and outputs an amplified signal; and a power supply module that supplies a power supply voltage to the power amplification module on the basis of a first control signal corresponding to the band width of the input signal. On the basis of the first control signal, the power supply module varies the power supply voltage in accordance with the amplitude level of the input signal in the case where the band width of the input signal is a first band width and varies the power supply voltage in accordance with the average output power of the power amplification module in the case where the band width of the input signal is a second band width that is larger than the first band width.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: June 21, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kiichiro Takenaka
  • Patent number: 11368920
    Abstract: Disclosed are a method and apparatus for dynamically adjusting an SAR value, a mobile terminal, and a computer storage medium. The method for dynamically adjusting the SAR value is applied to the mobile terminal. The mobile terminal comprises a WiFi antenna used for connecting a WiFi network. The method comprises: monitoring the change of a cell or the change of a network type of the mobile terminal; when monitoring the change of the cell or the change of the network type of the mobile terminal, obtaining a working frequency band on which the mobile terminal currently camps; and adjusting the transmit power of the WiFi antenna according to a difference value between a pre-stored SAR value corresponding to the working frequency band and an SAR standard value.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: June 21, 2022
    Assignee: ONEPLUS TECHNOLOGY (SHENZHEN) CO., LTD.
    Inventors: Xing Zhao, Jiayu Ding
  • Patent number: 11349511
    Abstract: A radio frequency module includes: a module board that includes a first principal surface and a second principal surface on opposite sides of the module board; a power amplifier configured to amplify a transmission signal; a first circuit component; and a power amplifier (PA) control circuit configured to control the power amplifier. The power amplifier and the PA control circuit are stacked on the first principal surface, and the first circuit component is disposed on the second principal surface.
    Type: Grant
    Filed: March 1, 2021
    Date of Patent: May 31, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yoichi Sawada, Takayuki Shinozaki
  • Patent number: 11323140
    Abstract: An object of the present disclosure is to prevent an output level of an analog signal from exceeding a predetermined upper limit value, in a module that adjusts a level of the analog signal. According to the present disclosure, there is provided a signal generation apparatus including an RF base module (12) that converts a digital base band signal for testing into an intermediate frequency (IF) signal and outputs the IF signal, and a control unit (18), in which the RF base module is connected to an RF converter (20) which outputs an analog RF signal obtained by frequency-converting the IF signal, and the control unit clips the IF signal output from the RF base module based on an output level of the analog RF signal output from the RF converter.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: May 3, 2022
    Assignee: ANRITSU CORPORATION
    Inventors: Hirofumi Ono, Ryo Inomata, Kenji Goto, Mayfor Dangkiw
  • Patent number: 11303255
    Abstract: Apparatus and methods for adaptive power amplifier biasing are provided. In certain embodiments, a power amplifier system includes a power amplifier that provides amplification to a radio frequency (RF) signal, and a power amplifier bias control circuit that generates a bias signal of the power amplifier based on a bandwidth signal indicating a bandwidth of the RF signal. The power amplifier bias control circuit has a bandwidth that adapts to the bandwidth of the RF signal as indicated by the bandwidth signal.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: April 12, 2022
    Assignee: Skyworks Solutions, Inc.
    Inventors: Sabah Khesbak, Florinel G. Balteanu, Roman Zbigniew Arkiszewski, Jeffrey Gordon Strahler
  • Patent number: 11296760
    Abstract: Disclosed is a method for uplink transmission and reception in a wireless communication system and an apparatus therefor. Specifically, a method for performing uplink transmission by a user equipment (UE) in a wireless communication system may comprise the steps of: receiving downlink control information (DCI) including sounding reference signal (SRS) resource indication (SRI) and precoding indication from a base station; and transmitting an uplink to the base station by applying precoding indicated by the precoding indication on an antenna port of an SRS transmitted within an SRS resource selected by the SRI.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: April 5, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Jonghyun Park, Jiwon Kang, Kijun Kim, Haewook Park
  • Patent number: 11290069
    Abstract: A Class-D amplifier that includes a driver stage operable in a plurality of modes having different respective output impedances, a loop filter having an output, and a circuit configured to sense a current at a load of the Class-D amplifier, determine, based on the sensed current, an IR drop for a respective output impedance of the driver stage, and add the IR drop to the loop filter output to compensate for the respective output impedance of the driver stage to reduce distortion.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: March 29, 2022
    Assignee: Cirrus Logic, Inc.
    Inventors: Zhaohui He, Ruoxin Jiang, Rahul Singh
  • Patent number: 11277165
    Abstract: Disclosed in the present invention are a radio frequency front-end transmission module, a chip, and a communications terminal. In the radio frequency front-end transmission method, an output matching circuit of at least one transmission channel is connected to a switch unit, and is connected to a radio frequency transmission path by using the switch unit; an output matching circuit of another at least one transmission channel is directly connected to the radio frequency transmission path. By means of the present invention, a matched transmission channel can be selected according to different frequency bands in different modes, and a control unit controls on and off of a corresponding amplification unit and the switch unit, to implement output of radio frequency signals of different frequency bands in different modes.
    Type: Grant
    Filed: November 28, 2020
    Date of Patent: March 15, 2022
    Assignee: VANCHIP (TIANJIN) TECHNOLOGY CO., LTD.
    Inventor: Yunfang Bai
  • Patent number: 11271600
    Abstract: A transmitter is provided. The transmitter includes an envelope tracking circuit, wherein the envelope tracking circuit includes an envelope circuit configured to generate, based on a baseband signal, an envelope signal indicating a temporal course of the baseband signal's envelope. Further, the envelope tracking circuit includes a bandwidth reduction circuit configured to generate a bandwidth reduced envelope signal based on the envelope signal, and a DC-to-DC converter configured to generate a supply voltage for a power amplifier of the transmitter based on the bandwidth reduced envelope signal. The transmitter additionally includes a predistortion circuit configured to generate a predistorted baseband signal based on the baseband signal and an adjustable predistortion configuration. The predistortion circuit is further configured to adjust the predistortion configuration based on the bandwidth reduced envelope signal.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: March 8, 2022
    Assignee: Apple Inc.
    Inventors: Alexander Belitzer, Yaron Yoffe, Yaniv Cohen, Michael Kerner
  • Patent number: 11258493
    Abstract: Disclosed is a method for uplink transmission and reception in a wireless communication system and an apparatus therefor. Specifically, a method for performing uplink transmission by a user equipment (UE) in a wireless communication system may comprise the steps of: receiving downlink control information (DCI) including sounding reference signal (SRS) resource indication (SRI) and precoding indication from a base station; and transmitting an uplink to the base station by applying precoding indicated by the precoding indication on an antenna port of an SRS transmitted within an SRS resource selected by the SRI.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: February 22, 2022
    Assignee: LG ELECTRONICS INC.
    Inventors: Jonghyun Park, Jiwon Kang, Kijun Kim, Haewook Park
  • Patent number: 11258293
    Abstract: Methods and systems are described for power state management. A critical usage window may be configured at a gateway node. A change in a power state of the gateway node may be detected, at an interface, during the critical usage window. The power state of the gateway node may be adjusted via the interface for a set duration using a backup power node.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: February 22, 2022
    Assignee: SCHNEIDER ELECTRIC IT CORPORATION
    Inventor: Peter J. O'Toole
  • Patent number: 11251817
    Abstract: A radio frequency module includes: a module board including a first principal surface and a second principal surface on opposite sides of the module board; a power amplifier configured to amplify a radio frequency transmission signal that has been input through a transmission input terminal; a low noise amplifier configured to amplify a radio frequency reception signal; a switch disposed on the second principal surface and connected between the transmission input terminal and the power amplifier; and an inductor of a matching circuit connected to an input terminal of the low noise amplifier. In the radio frequency module, at least one of the low noise amplifier or the inductor is disposed on the first principal surface.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: February 15, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Morio Takeuchi, Motoji Tsuda
  • Patent number: 11239868
    Abstract: A radio frequency module includes a module board including a first principal surface and a second principal surface on opposite sides thereof, a transmission power amplifier, a control circuit that controls the transmission power amplifier, and a first inductor connected to an output terminal of the transmission power amplifier. The control circuit is disposed on the first principal surface, and the first inductor is disposed on the second principal surface.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: February 1, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Takayuki Shinozaki, Yukiya Yamaguchi, Morio Takeuchi, Yoichi Sawada
  • Patent number: 11223239
    Abstract: A contactless power supply system includes a contactless power supply device and a power receiving device. Power is supplied from the contactless power supply device to the power receiving device while communication is performed therebetween. The power receiving device includes a power receiving coil unit, and a first communication unit that communicates with the contactless power supply device and attaches information having continuity to data transmitted to the contactless power supply device. The contactless power supply device includes a power supply coil unit, a second communication unit, and a power supply control unit that, when the second communication unit begins to receive data transmitted from the first communication unit, refers to the information having continuity attached to the continuously received data, and if continuity has been lost, performs correction to increase the output value of the power supplied from the power supply coil unit to the power receiving coil unit.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: January 11, 2022
    Assignee: OMRON CORPORATION
    Inventors: Takashi Miura, Toshiyasu Miwata, Yusuke Kawai, Masashi Sato
  • Patent number: 11224068
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates beyond 4th-Generation (4G) communication system such as long term evolution (LTE). The method in a wireless communication system is provided. The method includes transmitting a message including an indication of a beam reciprocity capability of the terminal if a random access response is detected in the random access; and detecting a contention resolution information to complete the random access.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: January 11, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chen Qian, Bin Yu, Qi Xiong
  • Patent number: 11223243
    Abstract: A contactless power supply system includes a contactless power supply device and a power receiving device. Power is supplied from the contactless power supply device to the power receiving device while communication is performed therebetween. The power receiving device includes a power receiving coil unit, and a first communication unit that attaches information having continuity to data transmitted to the contactless power supply device. The contactless power supply device includes a power supply coil unit, a second communication unit, and a power supply control unit that, in a steady state where communication is performed between two communication units after the second communication unit begins receiving the data transmitted from the first communication unit, refers to information having continuity attached to the data, and if continuity has been lost, performs correction to increase the output value of the power from the power supply coil unit to the power receiving coil unit.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: January 11, 2022
    Assignee: OMRON CORPORATION
    Inventors: Takashi Miura, Toshiyasu Miwata, Yusuke Kawai, Masashi Sato
  • Patent number: 11209508
    Abstract: A radio frequency (RF) device for receiving or exciting a magnetic resonance (MR) signal includes an MR coil (22, 32) tuned to an MR frequency band, a digital signal processing chain (40, 44, 58, 70) at least partly tuned to operate at baseband, an analog signal processing chain (48, 50, 54, 60) operatively connected with the MR coil and at least partly tuned to operate at the MR frequency band, and an analog to digital (A/D) or digital-to-analog (D/A) converter (46, 56) connecting the digital signal processing chain and the analog signal processing chain. The analog signal processing chain includes an analog dispersive delay line (50, 60) tuned to impose a frequency-dependent signal delay (52, 62) that is monotonically increasing or monotonically decreasing over the MR frequency band. In more specific embodiments, the RF device may comprise an MR transmit chain (20), or an MR receive chain (30).
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: December 28, 2021
    Assignee: Koninklijke Philips N.V.
    Inventors: Arne Reykowski, George Randall Duensing
  • Patent number: 11173856
    Abstract: A backup device for a vehicle performs backup of a plurality of drive sources based on power supply from a second power supply unit even when power supply from a first power supply unit stops and reduces the peak voltage necessary in the backup operation. In a backup device, when an abnormal state of the power supply from a first power supply unit is detected, a control unit instructs a discharge unit to intermittently apply a discharge current a plurality of times to each of a plurality of motors and controls a supply destination of the discharge current such that each instruction time period during which the discharge unit is instructed to apply the discharge current to one motor is shifted with respect to each instruction time period during which the discharge unit is instructed to apply the discharge current to the other motor.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: November 16, 2021
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventor: Hao Teng
  • Patent number: 11171675
    Abstract: A switch-less transceiver has parallel LC resonances that act as OFF switches and series LC resonances act as ON switches when resonating at the transmit (TX) or receive (RX) frequency. When the transmitter is disabled, no current flows through series LC filters. Instead, series impedances to ground provide an RF ground to the transmitter output node. A TX inductor between the transmitter output node and the antenna is in parallel with a TX blocking capacitor to ground, which together form a parallel resonance to ground that has a high impedance when resonating at the receiver frequency. This high impedance acts as an OFF switch to block antenna signals from entering the transmitter. The two paths are in parallel, presenting a high impedance to the antenna and forming an OFF switch when the receiver is disabled.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: November 9, 2021
    Assignee: Hong Kong Applied Science and Technology Research Institute Company, Limited
    Inventors: Huimin Guo, Yujian Han, Yat Tung Lai
  • Patent number: 11171685
    Abstract: Some embodiments include a system and method for enabling communicating Ultra Wideband (UWB) devices to collaborate by exchanging pulse shape information. The UWB devices use the pulse shape information to improve ranging accuracy. The improved ranging accuracy can be used in complex multipath environments where advanced estimation schemes are used to extract an arriving path for time-of-flight estimation. To determine the pulse shape information to be shared, some embodiments include determining location information of a UWB device and selecting the pulse shape information that satisfies regional aspects. The pulse shape information includes a time-zero index specific to a ranging signal that is used by UWB receivers to establish timestamps time-of-flight calculations. Some embodiments include measuring performance characteristics and selecting different pulse shape information based on the performance characteristics for improved accuracy.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: November 9, 2021
    Assignee: Apple Inc.
    Inventors: Joachim S. Hammerschmidt, Eren Sasoglu
  • Patent number: 11109410
    Abstract: The present invention relates to a wireless access system supporting an unlicensed band. According to this disclosure, a method by which a terminal performs LBT in a wireless access system supporting an unlicensed band and multiple carriers can comprise the steps of: receiving, from a base station, each of uplink grants for scheduling uplink channels on two or more component carriers (CCs); randomly selecting a first CC on which a first LBT is to be performed from among the two or more CCs; performing the first LBT on the selected first CC: and performing a second LBT on the remaining CCs among the two or more CCs, wherein the first LBT can be a random back-off-based LBT for performing a random back-off by a random back-off counter value, and the second LBT can be a channel sensing-based LBT for sensing a channel during a predetermined time interval before uplink transmission.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: August 31, 2021
    Assignee: LG ELECTRONICS INC.
    Inventors: Seonwook Kim, Joonkui Ahn, Hanjun Park
  • Patent number: 11095318
    Abstract: An antenna module includes a multilayer board, a radio frequency (RF) chip, and a first active device array. The multilayer board includes an antenna that transmits and receives electromagnetic waves. The RF chip is on a bottom surface of the multilayer board, and includes transmission circuits each of which constitutes a part of each of transmission paths for generating RF signals to be provided to the antenna. The first active device array is on the bottom surface of the multilayer board, and includes a first group of active devices respectively included in a portion of power amplifiers in the transmission paths of the transmission circuits, and first input pins and first output pins respectively connected to electrodes of the first group of active devices.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: August 17, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youngmin Kim, Hongjong Park, Daeyoung Yoon, Sunwoo Lee, Youngki Lee, Dooseok Choi
  • Patent number: 11088446
    Abstract: Disclosed are systems and methods for improving the quality and strength of a wireless signal connecting a mobile station and a base station, in situations where the mobile station is able to utilize a directional antenna. The system for improving system quality comprise, for example, a directional antenna; an antenna power level detector which detects a signal strength; a signal inverter wherein the signal inverter generates a conditioned signal from the detected signal strength; an indicator wherein the indicator provides an indicator of a signal quality level from the detected signal strength; a reorientation decision logic wherein the reorientation decision logic communicates an instruction for movement of the directional antenna, wherein the detected signal strength is correlated to a projected orientation of the directional antenna at a time the signal strength is detected, and further wherein an antenna orientation control loop communicates a reorientation instruction for the directional antenna.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: August 10, 2021
    Assignee: TAOGLAS GROUP HOLDINGS LIMITED
    Inventor: Christopher M. Anderson
  • Patent number: 11083903
    Abstract: Devices, systems, and methods for coupling with an implantable neurostimulator for delivering one or more electrical pulses to a target region within a patient's body are disclosed herein. A device, such as a charger, can include: a power source for storing electrical energy; a resonant circuit that can have a plurality of selectable natural frequencies; a driver coupled to the power source and the resonant circuit; and a processor coupled to the resonant circuit to control the natural frequency of the resonant circuit. The processor can control the natural frequency of the resonant circuit according to stored data associated with the implantable neurostimulator.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: August 10, 2021
    Assignee: AXONICS, INC.
    Inventors: Rabih Nassif, Steve Hankins, Christopher J. Bowes
  • Patent number: 11082009
    Abstract: An envelope tracking (ET) power amplifier apparatus is provided. In a non-limiting example, the ET power amplifier apparatus includes a single ET integrated circuit (ETIC) configured to support at least a pair of amplifier circuits for amplifying different radio frequency (RF) signals. One of the amplifier circuits may be configured to amplify a respective RF signal to a higher power and thus will operate based on an ET voltage whenever possible. Another amplifier circuit, on the other hand, may be configured to amplify a respective RF signal to a relatively lower power and thus will only operate based on the ET voltage when the other amplifier circuit is inactive. By employing a single ETIC, it may be possible to reduce footprint of the ET power amplifier apparatus, thus making it possible to fit the ET power amplifier apparatus into a small form factor electronic device, such as a wearable device.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: August 3, 2021
    Assignee: Qorvo US, Inc.
    Inventor: Nadim Khlat
  • Patent number: 11037606
    Abstract: Methods for powering up a memory device, for example, are disclosed. One such memory device includes power up circuitry configured to receive an external power supply and to provide an internal power supply to the memory device upon receipt of a command. The power up circuitry may be configured to provide the internal power supply limited to a peak current, or may be configured to provide the internal power supply not limited to a peak current. The memory device may be, for example, a synchronous dynamic random access memory (SDRAM) device or Flash memory.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: June 15, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Ted Pekny, Jeff Yu
  • Patent number: 11026189
    Abstract: Certain aspects of the present disclosure relate to methods and apparatus for wireless communication. In certain aspects, the method generally includes determine a transmission power for each of at least one first sounding reference signal (SRS) to be transmitted using at least one first antenna, wherein the determination is based on whether the at least one first SRS is transmitted using an amplifier of a transmit chain configured for transmissions using a second antenna, and transmitting the at least one first SRS based on the determination.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: June 1, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Timo Ville Vintola, Peter Gaal, Alberto Rico Alvarino, Yi Huang, Vishal Mahajan, Andrew Puayhoe See, Alexandros Manolakos
  • Patent number: 11018632
    Abstract: An envelope tracking power amplifier module and an envelope tracking method are provided. The envelope tracking power amplifier module includes a power amplifier and a linear amplifier coupled to the power amplifier and configured to receive and amplify an envelope signal and provide the amplified envelope signal to the power amplifier. The power amplifier is configured to receive and amplify a signal according to the amplified envelope signal. The envelope tracking method includes: providing a signal to the power amplifier; deriving an envelope phase of the signal, the envelope phase corresponding to an output power of the power amplifier; providing an envelope signal including the envelope phase to the envelope tracking module; the envelope tracking module providing the amplified envelope signal to the power amplifier; and the power amplifier amplifying the signal according to the amplified envelope signal and outputting the amplified signal at the output power.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: May 25, 2021
    Assignee: IWAVE TECHNOLOGIES CO., LTD.
    Inventors: Shau-Gang Mao, Chong-Yi Liou, Wei-Ting Tsai, Yu-Yao Chen, Zheng-An Peng, Shih-Ping Huang, Chien-Bang Chen
  • Patent number: 10985705
    Abstract: The present disclosure relates to pre-distortion processing methods and apparatus. One example apparatus includes a first pre-distortion part and a second pre-distortion part. The first pre-distortion part includes N digital pre-distortion (DPD) processors. The first pre-distortion part and the second pre-distortion part perform pre-distortion processing on a signal to support a power amplifier in performing linear amplification on the signal.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: April 20, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Vorobyev Andrey, Yiwei Hong, Ting Li
  • Patent number: 10948970
    Abstract: A low power microcontroller that includes a low power node controller adapted to retrieve data from peripheral devices is presented. The microcontroller contains a state machine coupled to a storage medium, which is adapted to store a set of instructions executable by the state machine. The microcontroller also contains a power domain controller, which is adapted to enable the state machine upon receipt of a notification signal. As an option, the microcontroller contains a plurality of communication controllers for communicating with a plurality of external devices, wherein the power domain controller includes a register which may be read by the state machine to identify a communication controller among the plurality controllers. Also, a method of operating a microcontroller for use with an external device is presented. The method provides a state machine which executes a set of instructions.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: March 16, 2021
    Assignee: Dialog Semiconductor B.V.
    Inventors: Nikolaos Moschopoulos, Konstantinos Georgios Kottikas, Dimitrios Bekiaris
  • Patent number: 10904840
    Abstract: A transmission power setting method includes selecting one of a plurality of channels of a communication system as a target channel for communication, and, based on pre-set communication parameters, setting a transmission power of the communication system to be a maximum transmission power corresponding to the target channel. The pre-set communication parameters include maximum transmission powers for the plurality of channels.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: January 26, 2021
    Assignee: SZ DJI TECHNOLOGY CO., LTD.
    Inventors: Yan Wang, Naibo Wang, Wei Fan, Han Huang