Gain Control Patents (Class 455/127.2)
  • Patent number: 11984916
    Abstract: An apparatus is disclosed for transmission setting selection. In an example aspect, an apparatus includes a wireless interface device with a communication processor and a radio-frequency front-end. The communication processor is configured to provide a signal. The radio-frequency front-end is coupled to the communication processor and configured to accept the signal. The radio-frequency front-end includes an amplifier configured to amplify the signal based on one or more amplifier settings. The wireless interface device is configured to adjust the one or more amplifier settings responsive to an output power being changed with a gain being unchanged.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: May 14, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Vladimir Aparin, Aidin Bassam, Nicholas Michael Carbone
  • Patent number: 11973521
    Abstract: According to various embodiments, an electronic device in a wireless communication system may include a Power Amplifier (PA) for a first frequency band, a Low Noise Amplifier (LNA) for a second frequency band at least partially overlapping a frequency band which is twice the first frequency band, and an impedance tuner which is in a first impedance state or a second impedance state under the control of the processor. The PA and the impedance tuner may be electrically coupled. A harmonic output level of the PA in the first impedance state may be greater than a harmonic output level of the PA in the second impedance state. The processor may be configured to control the impedance tuner to be in the second impedance state when communication is performed both in the first frequency band and the second frequency band, and control the impedance tuner to be in the first impedance state when communication is performed only in the first frequency band.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: April 30, 2024
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Kiyoung Oh, Wonsang Lee
  • Patent number: 11876492
    Abstract: Systems and methods related to power amplification and power supply control. A power amplification control system can include an interface configured to receive a transceiver control signal from a transceiver. The power amplification control system can include a power amplifier control component configured to generate a power amplifier control signal based on the transceiver control signal from the transceiver and a power supply control component configured to generate a power supply control signal based on the transceiver control signal from the transceiver and to generate the power supply control signal based on a local control signal from the power amplifier control component.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: January 16, 2024
    Assignee: Skyworks Solutions, Inc.
    Inventor: David Steven Ripley
  • Patent number: 11856529
    Abstract: A communication circuit includes a first transfer circuit that includes a first transmitter circuit, and a second transfer circuit that includes a second transmitter circuit that can transmit a signal simultaneously with the first transmitter circuit. The second transmitter circuit is configured to be placed in a transmission halt state when transmission power of the second transmitter circuit resulting from being decreased by a predetermined value is lower than or equal to a threshold.
    Type: Grant
    Filed: August 10, 2022
    Date of Patent: December 26, 2023
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Shinya Hitomi, Hidenori Obiya, Hirotsugu Mori
  • Patent number: 11770183
    Abstract: A system and method for compensating for attenuation of carrier power by a transmission path.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: September 26, 2023
    Assignee: Hughes Network Systems, LLC
    Inventor: Rajeev Oza
  • Patent number: 11752356
    Abstract: In one example in accordance with the present disclosure, an antenna system is described. The antenna system includes an array of antennas. Each antenna emits electromagnetic waves and is presented with a load that is different from other antennas in the array. The antenna system also includes a control system. The control system includes a single transmitter to sequentially drive antenna sets, a switching device to select, for each activation period in an activation sequence, an antenna set to be driven, and a controller. The controller determines an actual power output of each antenna and generates an adjusted control signal for the single transmitter such that the output of each antenna is controlled to match a target power for that antenna, regardless of a load for the antenna.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: September 12, 2023
    Assignee: NeuroEM Therapeutics, Inc.
    Inventors: Gary W. Arendash, Rob Baranowski
  • Patent number: 11735828
    Abstract: Disclosed is a system and method for a 24-GHz phased array for indoor smart radar comprising at least 6 horizontally placed antenna elements as a vertically placed 5-element series-fed microstrip patch array. The beam of the phased array can be continuously steered on the H-plane to different directions through a novel vector control array. Each element can adjust the phase and amplitude of the corresponding element of the horizontally placed linear array. The phased array system of the present invention may be fabricated on a single printed circuit board (PCB), and PIN diodes are used to realize beam steering by modulating the decomposed received signal. In order to compensate for the loss of the vector control array and reduce the noise figure, six low noise amplifiers (LNAs) are also used in the array. The present invention has the ability to continuously steer the beam on the H-plane.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: August 22, 2023
    Assignee: Texas Tech University System
    Inventors: Changzhi Li, Zhengyu Peng
  • Patent number: 11699983
    Abstract: A directional coupler (2) includes a main line (11), a sub-line (12), a variable terminator (13), and a variable filter circuit (15). The variable terminator (13) is a variable impedance circuit that terminates one end portion of the sub-line (12). The variable filter circuit (15) is connected to the other end portion of the sub-line (12). The variable filter circuit (15) may include a filter, a bypass path, and a switch which is connected to at least one of the filter and the bypass path.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: July 11, 2023
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Daisuke Tokuda, Ryangsu Kim, Yasushi Shigeno, Katsuya Shimizu
  • Patent number: 11594807
    Abstract: A method and electronic device for applying a maximum permissible exposure (MPE) operation on the electronic device. The electronic device includes a plurality of antenna arrays and a processor operably connected to the plurality of antenna arrays. The processor is configured to detect a MPE condition for radio frequency exposure and apply a MPE operation, from among a plurality of MPE operations, to at least one of the plurality of antenna arrays to modify the radio frequency exposure. The MPE operation includes coordination of at least two antenna arrays for signal transmission.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: February 28, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Boon Loong Ng, Suha Yoon, Sungchul Park, Jianhua Mo, Aris Papasakellariou
  • Patent number: 11533103
    Abstract: A system and method for compensating for attenuation of carrier power by a transmission path.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: December 20, 2022
    Assignee: Hughes Network Systems, LLC
    Inventor: Rajeev Oza
  • Patent number: 11515904
    Abstract: The disclosure relates to a power control circuitry for controlling a radio frequency, RF, transmitter of a network equipment or a user equipment, the power control circuitry comprising: a controller configured to control a power level of an RF signal generated by the RF transmitter for transmission via an antenna arrangement, wherein the power level is controlled based on information about an object within an coverage area of the antenna arrangement.
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: November 29, 2022
    Assignee: Intel Corporation
    Inventor: Markus Dominik Mueck
  • Patent number: 11438082
    Abstract: An electronic device of various embodiments can include a broadcast receiving module, a connector including a first pin and a second pin, and a processor, wherein the processor can be configured to: identify, through the first pin, the type of external electronic device connected through the connector; drive the broadcast receiving module in a state in which an external antenna included in an external electronic device and the broadcast receiving module are electrically connected through the first pin when the external electronic device corresponds to a designated electronic device type; receive a broadcast signal from the external antenna by using the broadcast receiving module; and output, through the second pin, an audio signal generated on the basis of at least a part of the broadcast signal to a designated device. Other embodiments are also possible.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: September 6, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sehwan Choi, Duhyun Kim, Woosup Lee, Jungsik Park, Youngsoo Chun, Kwanhoe Ku, Soyoung Lee
  • Patent number: 11388712
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method by a first terminal in a wireless communication system is provided. The method includes determining whether to transmit a preamble for an automatic gain control (AGC), determining a slot and at least one symbol in the slot to transmit the preamble for the AGC, in a case in which it is determined to transmit the preamble for the AGC, and transmitting, to a second terminal, the preamble for the AGC in the determined slot and the at least one symbol in the slot.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: July 12, 2022
    Inventors: Cheolkyu Shin, Jeongho Yeo, Hyunseok Ryu, Jinyoung Oh
  • Patent number: 11350408
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method by a first terminal in a wireless communication system is provided. The method includes determining whether to transmit a preamble for an automatic gain control (AGC), determining a slot and at least one symbol in the slot to transmit the preamble for the AGC, in a case in which it is determined to transmit the preamble for the AGC, and transmitting, to a second terminal, the preamble for the AGC in the determined slot and the at least one symbol in the slot.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: May 31, 2022
    Inventors: Cheolkyu Shin, Jeongho Yeo, Hyunseok Ryu, Jinyoung Oh
  • Patent number: 11349539
    Abstract: An apparatus, method and computer readable medium for special thermal density reduction by antenna thinning. A system comprises N transmit/receive (TX/RX) chains, where each TX/RX chain comprises an RFFE and each RFFE comprises one or more thermal sensors configured to measure heat in the RFFE. An antenna array coupled to the plurality of TX/RX chains. A codebook that comprises a plurality of code words configured to respond to real-time heat measurements from the thermal sensors in each TX/RX chain is configured to switch off selected TX/RX chains to reduce thermal density at the antenna array while maintaining M RFFEs switched on, where M<N and the desired beamforming gain is 10 log 10(M).
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: May 31, 2022
    Assignee: Apple Inc.
    Inventors: Oner Orhan, Brent Elliott, Hosein Nikopour, Eren Sasoglu, Shilpa Talwar
  • Patent number: 11309923
    Abstract: An electronic device is provided. The electronic device includes an antenna, a transmission path electrically connected to the antenna and including at least one amplifier, a transceiver connected to the transmission path and converting a signal, a feedback path connected between the transmission path and the transceiver, at least one processor connected to the transceiver and communicating with at least one external electronic device by using the transceiver, and a memory connected to the at least one processor. The processor may obtain first information about a first phase and a first magnitude, which are associated with the first frequency, and second information about a second phase and a second magnitude, which are associated with a multiplied frequency of the first frequency, from the transmission signal and the reflection signal using the transceiver, and may determine a state of the electronic device based on the first information and the second information.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: April 19, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yohan Moon, Dongil Yang, Seonjun Kim, Jonghun Yoo, Jongin Lee, Namjun Cho, Hyoseok Na
  • Patent number: 11302659
    Abstract: A semiconductor device includes a semiconductor substrate, a transistor, and a first harmonic termination circuit. The transistor is formed at the semiconductor substrate. The transistor amplifies an input signal supplied to an input end and outputs an amplified signal through an output end. The first harmonic termination circuit attenuates a harmonic component included in the amplified signal. The first harmonic termination circuit is formed at the semiconductor substrate such that one end of the first harmonic termination circuit is connected to the output end of the transistor and the other end of the first harmonic termination circuit is connected to a ground end of the transistor.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 12, 2022
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Hisanori Namie, Satoshi Goto, Satoshi Tanaka
  • Patent number: 11284361
    Abstract: A method for device-to-device communication comprises providing a first communication device, a second communication device, and a plurality of base stations, measuring a first set of base station channel gains from the first communication device, measuring a second element of data from the second communication device, providing the first set of base station channel gains and the second element of data as inputs to an algorithm, calculating a D2D channel gain from the first set of base station channel gains and the second element of data with the machine learning algorithm, and adjusting at least one parameter based on the calculated D2D channel. A system for controlling device-to-device communication and a method of training a machine learning algorithm are also described.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: March 22, 2022
    Assignees: Czech Technical University in Prague, EURECOM
    Inventors: Mehyar Najla, Zdenek Becvar, Pavel Mach, David Gesbert
  • Patent number: 11201635
    Abstract: An electronic device includes a foldable housing including a hinge structure, a first housing structure including a first surface facing a first direction and a second surface facing a second direction opposite to the first direction, a second housing structure including a third surface facing a third direction and a fourth surface facing a fourth direction opposite to the third direction, and folded with respect to the first housing structure about the hinge structure, a wireless communication circuitry disposed inside the first housing structure or the second housing structure, a sensor disposed inside the first housing structure or the second housing structure, a grip sensor circuitry disposed outside the first housing structure or the second housing structure, a processor disposed inside the first housing structure or the second housing structure, and a memory operatively connected with the processor.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: December 14, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Duho Chu, Yongyoun Kim, Jaesung Shim, Myeongsu Oh, Hojin Jung
  • Patent number: 11196340
    Abstract: Described herein are systems, architectures, circuits, devices, and methods for a DC-DC converter that dynamically adjusts a supply voltage to a power amplifier based on the number of resource blocks in a signal to be transmitted. The disclosed technologies estimate the number of resource blocks in a signal, generate a signal corresponding to the estimated number of resource blocks, and modify a supply voltage based on the generated signal. These technologies can be used to increase the efficiency of power amplifier systems for cellular signals being transmitted that have fewer resource blocks than is typically assumed (e.g., at least 100 resource blocks).
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: December 7, 2021
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Sabah Khesbak, Florinel G. Balteanu, Roman Zbigniew Arkiszewski
  • Patent number: 11165471
    Abstract: A MIMO transceiver configured for digital pre-distortion may include a first communication chain configured to wirelessly transmit a signal at a first frequency. The first communication chain may include a pre-distorter circuit configured to accept parameters to pre-distort signals prior to transmission. The first communication chain may include a PA configured to amplify the signals of the first communication chain prior to transmission. The MIMO transceiver may include a second communication chain. The second communication chain may be configured to wirelessly receive the signal at the first frequency. The second communication chain may include a converter circuit configured to convert the signal to a baseband frequency. The second communication chain may include a buffer configured to buffer the signal at the baseband frequency. The MIMO transceiver may include a DPD circuit configured to calibrate the parameters based on the buffered signal to compensate for non-linearity in amplification by the PA.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: November 2, 2021
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Abhishek Kumar Agrawal, Hossein Dehghan
  • Patent number: 11158794
    Abstract: A high-yield, tunable radio frequency (RF) filter includes a plurality of process-dependent capacitors and a plurality of non-volatile RF switches. Each of the plurality of process-dependent capacitors is connected to at least one of the plurality of non-volatile RF switches. An auxiliary capacitor in the plurality of process-dependent capacitors is engaged by an ON-state non-volatile RF switch in the plurality of non-volatile RF switches. A primary capacitor in the plurality of process-dependent capacitors is disengaged by an OFF-state non-volatile RF switch in the plurality of non-volatile RF switches. The auxiliary capacitor substitutes for the primary capacitor.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: October 26, 2021
    Assignee: Newport Fab, LLC
    Inventors: Chris Masse, David J. Howard, Nabil EI-Hinnawy, Gregory P. Slovin
  • Patent number: 11139665
    Abstract: A wireless electronic device is provided which comprises a rechargeable power supply and a power capacity indicator unit. The power capacity indicator unit comprises one or more sensors configured to detect that the wireless electronic device is out of a base charger and is in an idle state for a predetermined idle threshold. The one or more sensors are further configured to detect when a power level of the rechargeable power supply is within at least one predetermined power threshold range. The control unit is configured to activate at least one power status indicator corresponding to the at least one predetermined power threshold range when the wireless electronic device is detected to be out of the base charger and in the idle state for the predetermined idle threshold, and the detection of the power level of the rechargeable power supply is within at least one predetermined power threshold range.
    Type: Grant
    Filed: April 27, 2020
    Date of Patent: October 5, 2021
    Assignee: HAND HELD PRODUCTS, INC.
    Inventors: Stephen J. Colavito, Ka Man Au, Christopher Allen, Larry Ramsey-Macomber
  • Patent number: 11076409
    Abstract: Techniques are described herein for allocating transmit power between precoding resource groups (PRGs) and/or transmit chains of a user equipment (UE) to reduce the amount of total transmit power that is unused. The UE may determine a set of precoding scaling factors for each PRG to efficiently allocate a total transmit power between the PRGs using a two-stage approach. During a first stage, the UE may determine PRG-specific precoding scaling factors for each PRG associated with an uplink transmission. During a second stage, the UE may determine a residual precoding scaling factor to apply to all the PRGs associated with the uplink transmission and determine overall precoding scaling factors for each PRG. The second stage may be configured to refine the scaling factors determined in the first stage such that at least some of the unused transmit power is allocated to at least one of the PRGs or transmit chains.
    Type: Grant
    Filed: July 26, 2019
    Date of Patent: July 27, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Gokul Sridharan, Jay Kumar Sundararajan, Yi Huang, Wei Yang, Joseph Binamira Soriaga, Tingfang Ji
  • Patent number: 11050472
    Abstract: Apparatus, computer readable media, and methods for enhanced beamforming training in a wireless local area network are disclosed. An apparatus of a access point or station is disclosed. The apparatus including processing circuitry where the processing circuitry is configured to encode an EBRP packet comprising a first portion comprising an indication of a first number of transmit antenna training settings (N-TX), and an indication of a second number of receive training subfields per N-TX settings (N-RX), and a second portion comprising a third number of training subfields. The third number may be less than or equal to N-TX times N-RX. The processing circuitry may be configured to cause the first portion of the EBRP packet to be transmitted and cause the second portion to be transmitted, where two or more of the third number of training subfields are to be transmitted simultaneously using different antennas and orthogonal sequences.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: June 29, 2021
    Assignee: Intel IP Corporation
    Inventors: Assaf Kasher, Carlos Cordeiro, Alexander Maltsev, Artyom Lomayev
  • Patent number: 10972197
    Abstract: Embodiments of this application provide a channel calibration method, where the method includes: obtaining at least two channel sets including a first channel set and a second channel set, where the at least two channel sets are obtained by grouping a plurality of to-be-calibrated channels, each of the at least two channel sets includes a reference channel and at least one to-be-calibrated channel, and the first channel set and the second channel set have an intersection set; determining a compensation value of each to-be-calibrated channel in each of the at least two channel sets; determining an inter-set compensation value between the first channel set and the second channel set; and calibrating the plurality of channels based on the inter-set compensation value and the compensation values of the to-be-calibrated channels. In embodiments of this application, frequency responses of all channels can be kept consistent, thereby improving calibration accuracy.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: April 6, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Keyu Song
  • Patent number: 10879861
    Abstract: A bias circuit of an amplifying device including amplifying circuits and a bypass circuit responding to a first control signal, includes a first bias circuit, a second bias circuit, and a compensating circuit. The first bias circuit is configured to supply a first base bias voltage to a first amplifying circuit of the amplifying circuits in response to a second control signal. The second bias circuit is configured to supply a second base bias voltage to a second amplifying circuit of the amplifying circuits in response to a third control signal. The compensating circuit is connected to either one or both of the first bias circuit and the second bias circuit, and configured to vary an impedance in response to a fourth control signal, and compensate for either one or both of the first base bias voltage and the second base bias voltage based on the varied impedance.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: December 29, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang Wook Park, Dae Hee No, Hyun Jun Kim, Bo Hyun Hwang, Jun Goo Won, Da Hye Park, Sung Hwan Park, Ki Joong Kim, Yoshiyuki Tonami
  • Patent number: 10840952
    Abstract: A radio-frequency (RF) switching system for 5G communications and a method of designing it are disclosed. The RF switching system includes a MMMB switching unit and an antenna. The MMMB switching unit includes a 5G-mode multiband switching subunit including a 5G-mode low-frequency (LF)-band switching subunit and a 5G-mode high-frequency (HF)-band switching subunit partitioned from the 5G-mode LF-band switching subunit at a reference frequency. The 5G-mode LF-band switching subunit is connected to the antenna via a low-pass filter, and the 5G-mode HF-band switching subunit is connected to the antenna via a high-pass filter. The RF switching system for 5G communications has improved isolation performance in both the HF and LF bands and improved insertion loss performance in the HF band.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: November 17, 2020
    Assignee: Shanghai Huahong Grace Semiconductor Manufacturing Corporation
    Inventor: Ruofan Dai
  • Patent number: 10778157
    Abstract: An RF receiver circuit configuration and design limited by conditions and frequencies to simultaneously provide steady state low-noise signal amplification, frequency down-conversion and image signal rejection. The invention provides combined circuits of an RF transceiver architecture that measure antenna reflected power relative to forward power using the error amplifier signal to adjust the gain of the variable gain amplifier in order to compensate for the mismatch between forward reflected power and forward power at the antenna in order to achieve constant radiated power. The RF receiver circuit may be implemented as one of a CMOS single chip device or as part of an integrated system of CMOS components.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: September 15, 2020
    Assignee: Berex, Inc.
    Inventors: Oleksandr Gorbachov, Lisette L. Zhang
  • Patent number: 10747361
    Abstract: The control device includes a touch sensor circuit, a control circuit, a driving circuit and a switching circuit. The touch sensor circuit is configured to generate a touch signal and a function signal in response to a touch state of a touch component. The control circuit is activated by a first voltage. The control circuit selectivity generates a self-holding signal according to the function signal when it is activated. The driving circuit is configured to generate a drive signal according to the touch signal or the self-holding signal. The switch circuit is turned on by the drive signal so as to provide the first voltage to the control circuit by the turned-on switching circuit. When the control circuit generated the self-holding signal, the control circuit is configured to continuously transmit the self-holding signal to the driving circuit according to the function signal during a first enabling period.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: August 18, 2020
    Assignee: DELTA ELECTRONICS INC.
    Inventors: Tsung-Ting Wu, Si-Wei Chen
  • Patent number: 10680685
    Abstract: Radio network node and method therein, for communication in a wireless communication system. The radio network node comprises: a plurality of antenna elements, a plurality of transceivers, wherein the plurality of transceivers comprise a first subset of the plurality of transceivers coupled to a first subset of the plurality of antenna elements and a second subset of the plurality of transceivers coupled to a second subset of the plurality of antenna elements; and a controller configured to adjust the first subset of the transceivers to work at a first frequency band, and to adjust the second subset of the transceivers to work at a second frequency band.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: June 9, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Mats Högberg, Björn Sihlbom, Ulrik Imberg, Tomas Wilhelmsson, Teijo Henrikki Lehtinen, Yajun Jiang
  • Patent number: 10642302
    Abstract: An apparatus for generating a substantially constant DC reference voltage. The apparatus includes a reference voltage generator configured to generate a substantially constant direct current (DC) reference voltage based on a voltage on a data signal transmission line, wherein the voltage is based on a bandgap reference voltage. In one implementation, the data signal transmission line is a differential signal transmission line and the voltage is a common mode voltage. In another implementation, the data signal transmission line is an I-data signal transmission line and a Q-data signal transmission line, and the voltage is an average or weighted-average of the common mode voltages of the I- and Q-differential signals. In another implementation, the reference voltage is based on a single-ended (e.g., positive- and/or negative)-component or vice-versa of I- and Q-data signals, respectively.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: May 5, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Balasubramanian Sivakumar, Dinesh Jagannath Alladi, Kentaro Yamamoto, Sean Baker, Liang Zhao
  • Patent number: 10594346
    Abstract: A method for attenuating interference generated by intermodulation products with respect to a multiplexed radio signal having a desired frequency the method includes implementing an automatic gain control having a gain setpoint configurable between a first setpoint and a second setpoint lower than the first setpoint; configuring the automatic gain control so that the gain setpoint is equal to the first setpoint; detecting the presence of co-channel interference at the desired frequency; if co-channel interference is detected at the desired frequency, then, if the automatic gain control is active, configuring it so that the gain setpoint is equal to the second setpoint and, if the automatic gain control is not active, configuring it so that the gain setpoint is equal to the first setpoint.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: March 17, 2020
    Assignees: Continental Automotive France, Continental Automotive GmbH
    Inventors: Laurent Théry, Chao Lin
  • Patent number: 10560140
    Abstract: A MIMO wireless transceiver includes: antennas, components forming transmit and receive chains coupled to the antennas, a signal combiner, and a predistortion calibration circuit. The transmit chain components include: pre-distorter circuits and power amplifiers (PA)s, The pre-distorter circuits each couple to a transmit chain for pre-distorting an associated signal thereon. The PAs are input coupled to a corresponding transmit chain and output coupled to a corresponding antenna. The signal combiner combines the amplified signals from all of the PAs into a combined output signal.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: February 11, 2020
    Assignee: QUANTENNA COMMUNICATIONS, INC.
    Inventors: Songping Wu, Hossein Dehghan, Abhishek Kumar Agrawal
  • Patent number: 10516406
    Abstract: A digital-to-analog converter (DAC) linearization system can include a DAC configured to generate an analog output signal based on a digital input signal, a detector configured to detect noise on a supply voltage and generate a noise detection signal based on the detected noise, and a compensator that is configured to generate a compensated analog signal based on the analog output signal and the noise detection signal.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: December 24, 2019
    Assignee: Intel Corporation
    Inventor: Franz Kuttner
  • Patent number: 10473532
    Abstract: A method for use in an electronic device having an amplification unit, the method comprising: detecting a current temperature of the electronic device when the amplification unit is in a first state in which the amplification unit is operated in accordance with first control value; detecting whether the current temperature meets a threshold; identifying a second control value that is lower than the first control value, when the current temperature meets the threshold; and changing an amount of power supplied to the amplification unit by transitioning the amplification unit into a second state in which the amplification unit is operated in accordance with the second control value.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: November 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jongwon Yum
  • Patent number: 10444353
    Abstract: An imaging system that utilizes deterministic bit sequences modulated onto an in-phase component of a carrier frequency and continuously transmitted via a transducer and received for imaging a medium and/or environment is provided. The received signal is demodulated by an in-phase demodulator and a quadrature demodulator and the demodulated components are processed to provide a spatial mapping of a medium or environment being imaged.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: October 15, 2019
    Assignee: 8517401 Canada Inc.
    Inventor: Christopher John Leskiw
  • Patent number: 10396833
    Abstract: A radio frequency front end circuit includes an output signal transmission line, an amplifier circuit with an input connected to a radio frequency signal source and an output connected to the output signal transmission line. A harmonic suppression circuit is connected to the amplifier circuit, and includes an active circuit element having a frequency-dependent impedance and is tuned as a reflective trap with a negative capacitance for one or more rejection frequency ranges each corresponding to a multiple of a fundamental frequency of a signal generated by the radio frequency signal source.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: August 27, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: Oleksandr Gorbachov, Lisette L. Zhang, Lothar Musiol
  • Patent number: 10312921
    Abstract: A system and method of reducing the flicker noise of frequency synthesizers is disclosed. The current source for the synthesizer charge pump current source is modulated so that its flicker noise is displaced to a higher offset frequency. This allows the flicker noise to be filter or nulled out by, for example, a notch filter. The flicker noise can also be modulated into a spread spectrum utilizing sigma delta modulation.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: June 4, 2019
    Assignee: NORTHROP GRUMMAN SYSTEMS CORPORATION
    Inventor: Peter Cheng
  • Patent number: 10291295
    Abstract: Certain aspects involve selectively combining uplink transmissions in a distributed antenna system (“DAS”). For example, a unit of the DAS can receive baseband uplink transmissions from remote units of the DAS via a first channel and a second channel. The unit can generate a first combined uplink signal by combining baseband uplink transmissions received from a first subset of the remote units via the first channel that include data for transmission to a base station. The unit can generate a second combined uplink signal that includes baseband uplink transmissions received from a second subset of the remote units via the second channel and excludes or attenuates baseband uplink transmissions that are received from the first subset of the remote units via the second channel and that lack data for transmission to the base station are excluded or attenuated. The unit can transmit the combined uplink signals to the base station.
    Type: Grant
    Filed: February 20, 2017
    Date of Patent: May 14, 2019
    Assignee: CommScope Technologies LLC
    Inventors: Van E. Hanson, Christopher Goodman Ranson
  • Patent number: 10291291
    Abstract: A contactless communication device includes a receiver unit having differential input terminals for connecting to an antenna. The receiver unit is coupled to a transmitting device and receives an RF signal transmitted by the transmitting device. A first comparator is adapted to generate a first comparator output signal indicative of a relationship between a voltage at a positive input terminal of the receiver unit and a first reference voltage. A second comparator is adapted to generate a second comparator output signal indicative of a relationship between a voltage at a negative input terminal of the receiver unit and a second reference voltage. A first voltage regulation circuit is adapted to regulate the voltage at the positive input terminal in response to the first comparator output signal. A second voltage regulation circuit is adapted to regulate the voltage at the negative input terminal in response to the second comparator output signal.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: May 14, 2019
    Assignee: NXP B.V.
    Inventors: Jingfeng Ding, Gernot Hueber, Stefan Mendel
  • Patent number: 10284235
    Abstract: Disclosed herein are wireless transceivers with switches to reduce harmonic leakage. In some embodiments, a transmitter system includes a power amplification system including a first power amplifier configured to amplify a signal at a first cellular frequency band and a second power amplifier configured to amplify a signal at a second cellular frequency band. The transmitter includes a switch coupled between an output of the second power amplifier and a ground potential. The transmitter includes a controller configured to, based on a band select signal, control the switch and selectively enable or disable each of the first power amplifier and the second power amplifier. Selective control of the switch can reduce harmonic leakage compared to a system that does not include the disclosed switches and controls.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: May 7, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Philip H. Thompson, Steven T. Seiz, Roman Zbigniew Arkiszewski, Matthew Lee Banowetz, Duane A. Green
  • Patent number: 10278089
    Abstract: A method for determining a center frequency in an unlicensed frequency band to use for downlink communication in a cellular network. The method is performed in a network node and comprises the steps of: performing a coarse pre-scan when the network node is in a transmit time slot, yielding respective coarse measurement of signal levels for a plurality of frequencies in the unlicensed frequency band; performing an accurate measurement when the network node is in a receive time slot, yielding respective accurate measurement of signal levels for a plurality of frequencies in the unlicensed frequency band; and determining at least one frequency to use as a center frequency for a downlink communication channel in the unlicensed frequency band.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: April 30, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Kauko Heinikoski, Marko E Leinonen
  • Patent number: 10224977
    Abstract: In an embodiment, an apparatus includes a first radio frequency (RF) signal path and a second RF signal path. The first RF signal path can provide a first RF signal when active and the second RF signal path can provide a second RF signal when active. The second RF signal path can include a matching network with a load impedance configured to prevent a resonance in the second RF signal path due to coupling with the first RF signal path when the first RF signal path is active.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: March 5, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: Weimin Sun, David Viveiros, Jr., Russ Alan Reisner
  • Patent number: 10177838
    Abstract: The systems and processes described herein can reduce the footprint of the internal devices of a wireless device by combining the DC-DC supply regulator with a FEM. Further, the device footprint can be further reduced by sharing the integrated DC-DC supply regulator among multiple FEMs reducing or eliminating the use of a separate DC-DC supply regulator for each FEM of a wireless device. Moreover, in certain embodiments, by integrating the DC-DC supply regulator into a 2G FEM, power efficiency can be improved for some wireless devices. For example, the DC-DC supply regulator may be used to supply power to a PA used for high-band 2G transmission functions. Using the DC-DC supply regulator can improve power efficiency compared to systems that supply the power for the high-band 2G PA directly from the power supply (e.g., the battery).
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: January 8, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: David Steven Ripley
  • Patent number: 10064119
    Abstract: An attenuation device inclusive of radio frequency (RF) absorber materials to reduce signal power in transmission systems involved in short range communication systems is described. The attenuation device is placed between a radio transmitter and an antenna in a transmission system. The attenuation device may be coated with protective material, and may have small dimensions such that the organization and dimensions of the transmission system are not significantly modified. The attenuation device reduces the power of a signal to be transmitted to a receiver, and has a good return loss indicative of a relatively low mismatch with the antenna.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: August 28, 2018
    Assignee: Google LLC
    Inventors: Timothy Michael O'Connor, Toktam Nezakati Esmaeelzadeh, Siyuan Xin, Robert John Schlaefli
  • Patent number: 9939521
    Abstract: Provided are apparatus and methods for ranging between a plurality of wireless devices. An exemplary method includes, at a first wireless device, transmitting a primary portion symbol comprising a first packet and transmitting a secondary portion symbol. The secondary portion symbol is transmitted simultaneously at a lower transmit power than the primary portion symbol, and the secondary portion symbol comprises a second packet identical to the first packet. The primary portion symbol can be transmitted in a first channel having a substantially 20 MHZ bandwidth and the secondary portion can be transmitted in a second channel having a substantially 20 MHZ bandwidth. The first and second channels are substantially adjacent in frequency. After transmitting the primary portion symbol, for example, a high-throughput long-training-field symbol or a very-high-throughput long-training-field symbol can be repetitively transmitted.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: April 10, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Jubin Jose, Xinzhou Wu, Thomas Joseph Richardson
  • Patent number: 9894615
    Abstract: A method, system, and device provide power-efficient communications within the context of available power. Transmission and receipt data rates are scalable in accordance with output power available from a power source. Data is transmitted at a data rate determined, at least in part, by the available output power.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: February 13, 2018
    Assignee: SUNRISE MICRO DEVICES, INC.
    Inventors: Edgar H. Callaway, Jr., Paul E. Gorday
  • Patent number: 9813273
    Abstract: A peak suppression device includes an acquiring unit that acquires multiple envelopes of carrier signals that are included in a multicarrier signal, an adding unit that adds the envelopes to generate a combined envelope, a detecting unit that detects a peak value and a peak timing of the multicarrier signal by using the combined envelope, and a suppressing unit that suppresses a peak of the multicarrier signal in accordance with the peak value and the peak timing.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: November 7, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Hiroyoshi Ishikawa, Toshio Kawasaki, Hikaru Ishikawa, Kazuo Nagatani
  • Patent number: 9781611
    Abstract: A device includes a receiver, a determiner, and a demodulator. The receiver is configured to receive from a base station a reference signal having a power level such that a sum of the power level and a processing gain of a channel estimator of the device corresponds to a predetermined demodulation penalty for the device. The determiner is configured to determine the power level. The demodulator is configured to demodulate a data signal received from the base station based on the power level and a channel estimate generated based on the reference signal.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: October 3, 2017
    Assignee: Marvell World Trade LTD.
    Inventor: Daniel Yellin