Patents Examined by Lana N. Le
  • Patent number: 10574192
    Abstract: A linearization circuit that reduces intermodulation distortion in an amplifier output receives a first signal that includes a first frequency and a second frequency and generates a difference signal having a frequency approximately equal to the difference of the first frequency and the second frequency. The linearization circuit generates an envelope signal based at least in part on a power level of the first signal and adjusts a magnitude of the difference signal based on the envelope signal. When the amplifier receives the first signal at an input terminal and the adjusted signal at a second terminal, intermodulation between the adjusted signal and the first signal cancels at least a portion of the intermodulation products that result from the intermodulation of the first frequency and the second frequency.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: February 25, 2020
    Assignee: Skyworks Solutions, Inc.
    Inventors: Yu Zhu, Boshi Jin, Steven Christopher Sprinkle, Florinel G. Balteanu, Oleksiy Klimashov, Dylan Charles Bartle, Paul T. DiCarlo
  • Patent number: 10574280
    Abstract: Embodiments of the present application disclose a passive intermodulation suppression method and a passive intermodulation suppression system. The method in the embodiments of the present application includes: obtaining, by using a target uplink controllable gain module, a first power Pt of an uplink signal sent by an antenna; obtaining a second power Pb of a signal that is output from an output port of a base station; configuring a target attenuation of the base station; and adjusting the initial gain value based on the target attenuation to keep a gain of the base station constant. According to the method described in the embodiments, the base station can maintain the target attenuation constant in a process of adjusting a gain of the target uplink controllable gain module, thereby reducing a PIM requirement of a passive intermodulation suppression system.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: February 25, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Lanping Gong, Lianghong Xiang, Weihong Xiao
  • Patent number: 10568051
    Abstract: The present disclosure provides a method and a device in a User Equipment (UE) and a base station used for low latency communication. The UE determines a first power, and transmits a first radio signal with a first power on a first carrier; and determines R power value(s), and transmits R low latency radio signal(s) with the R power(s) respectively on a second carrier. When there exists a value of the first power and the R power value(s) equal to 0, transmission of a corresponding radio signal is dropped. The present disclosure can ensure low latency radio signal transmission power by designing the first reserved power, which in turn improves overall performance of the system.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: February 18, 2020
    Assignee: SHANGHAI LANGBO COMMUNICATION TECHNOLOGY COMPANY LIMITED
    Inventor: Xiaobo Zhang
  • Patent number: 10547281
    Abstract: Methods and apparatuses for tuning source impedance for at least a portion of a receive path in a radio frequency front-end. An exemplary circuit generally includes a first tunable resonant circuit having an output coupled to an input of the at least the portion of the receive path and a second tunable resonant circuit having an input coupled to the output of the first tunable resonant circuit and to the input of the at least the portion of the receive path. The circuit also includes a first control input coupled to the first tunable resonant circuit and configured to adjust an impedance of the first tunable resonant circuit based on a frequency response of an output of the at least the portion of the receive path, and a second control input coupled to the second tunable resonant circuit and configured to adjust an admittance of the second tunable resonant circuit.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: January 28, 2020
    Assignee: QUALCOMM Incorporated
    Inventor: Gary Lee Brown, Jr.
  • Patent number: 10516380
    Abstract: A power detector for use in an RF receiver. The detector includes a power reference generator and a power quantizer. The power reference generator develops a power reference current, voltage, or signal as a function of a power transferred via a received RF signal. The power quantizer is responsive to the power reference current, voltage, or signal to develop a digital field power value indicative of the power reference current, voltage, or signal.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: December 24, 2019
    Assignee: RFMicron, Inc.
    Inventors: Shahriar Rokhsaz, Edwin De Angel
  • Patent number: 10511289
    Abstract: A wireless network includes a tunable RF transmitter in wireless communication with a master node to transmit at a first slave frequency; a tunable RF receiver in wireless communication with the master node to receive at a second slave frequency; and an RF oscillator to communicate with the RF receiver and the RF transmitter an RF oscillator frequency to determine and tune the first and second slave frequencies. The RF oscillator is configured to receive calibration information including time information or frequency information, or both, from a reference node. The RF oscillator frequency of the RF oscillator is tuned based on the calibration information from the reference node to enable communication between the slave node and the master node at the tuned RF oscillator frequency.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: December 17, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Osama Khan, Kristofer Pister
  • Patent number: 10505581
    Abstract: The invention relates to an electrical circuit (1) for transmitting a useful analogue signal which has a signal transmission path (16) with an input path (2) and an output path (3) and one or more switches (4-6), with which switch or switches the useful signal which is carried on the input path (2) can be connected through to the output path (3) by the switch or the switches (4-6) being switched to the switched-on state. According to the invention, the electrical circuit (1) comprises a compensation circuit (7) which has one or more auxiliary switches (17) of the same type as the switch or the switches (4-6), and the auxiliary switch or switches (17) is or are coupled to the signal transmission path (16) such that said auxiliary switch or switches generates or generate signal distortion in the switched-on state, which signal distortion substantially compensates for a distortion in the useful analogue signal which is generated by the switch or switches (4-6).
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: December 10, 2019
    Inventor: Thomas Meier
  • Patent number: 10491254
    Abstract: A wireless device and a wireless local area network (WLAN) signal receiving method, where the wireless device includes a receiver, a jamming circuit, an interference cancelling circuit, a first antenna, and a second antenna. The receiver is coupled to the first antenna and configured to detect a WLAN signal, the jamming circuit is coupled to the second antenna, an input end of the interference cancelling circuit is coupled to the second antenna, and an output end of the interference cancelling circuit is coupled to the first antenna. The jamming circuit is configured to send, using the second antenna, an interference signal on a channel on which the WLAN signal is located, and the interference cancelling circuit is configured to generate, based on the interference signal, a reconstruction signal cancelling the interference signal received by the first antenna, and provide the reconstruction signal at the output end.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: November 26, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Dong Liang, Sheng Liu
  • Patent number: 10476467
    Abstract: A power detector for use in an RF receiver. The detector includes a power reference generator and a power quantizer. The power reference generator develops a power reference current, voltage, or signal as a function of a power transferred via a received RF signal. The power quantizer is responsive to the power reference current, voltage, or signal to develop a digital field power value indicative of the power reference current, voltage, or signal.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: November 12, 2019
    Assignee: RFMicron, Inc.
    Inventors: Shahriar Rokhsaz, Edwin De Angel
  • Patent number: 10470062
    Abstract: A battery operated portable communication device provides converged functionality while avoiding resets to the device. Composite logic circuitry formed of at least one comparator and a logic interface controls current limiting to a primary load formed of high power land mobile radio (LMR) devices and programming to secondary loads formed of non-LMR peripherals. At least one current limit control signal is used to control current to the primary load under high current mode operations. Another control signal provides an interruption alert to a slave processor for controlled programming of the secondary loads during the high current operations of the primary load. Current to the primary load is restored while the secondary load is interrupted. Operation of secondary load processes is resumed when the primary load ceases high power operation.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: November 5, 2019
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Peter J. Bartels, Javier Alfaro, Jeffrey L. Cutcher, Kevin Alonso, Stephen C. Glass
  • Patent number: 10459065
    Abstract: There is provided a system and method for determining the location of a target device relative to a set of anchor nodes having known locations in an environment wherein the line of sight between the target device and one or more of the anchor nodes is impeded. The system is configured to, for each anchor node: receive a signal transmitted between the anchor node and the target device; determine, based on the signal, an estimate of the distance between the target device and the anchor node or an estimate of the angle of arrival of the signal to the target device; determine a received signal quality indicator based on the signal; and, assign a weight for the signal based on the received signal quality indicator. The system is further configured to determine the position of the target device based on the estimated distances or angles of arrival, the corresponding weights and the locations of the anchor nodes.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: October 29, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Orestis Georgiou, William Thompson
  • Patent number: 10461792
    Abstract: Tablet PC (10) includes communication units (111, 112), antenna terminal (T1) used to receive one of first and second signals, antenna terminal (T2) used to receive another one of the first and second signals, terminal switch (40) configured to perform switching between a first coupling state in which communication unit (111) and terminal (T1) are coupled, and communication unit (112) and terminal (T2) are coupled, and a second coupling state in which communication unit (111) and terminal (T2) are coupled, and communication unit (112) and terminal (T1) are coupled, and controller (30) configured to control terminal switch (40) so as to switch to the first coupling state when terminal (T1) receives the first signal, and terminal (T2) receives the second signal, and to control terminal switch (40) so as to switch to the second coupling state when terminal (T1) receives the second signal, and terminal (T2) receives the first signal.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: October 29, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomohiro Uchida, Kenji Nishikawa, Toshiharu Ishimura
  • Patent number: 10454431
    Abstract: An amplifier for converting a single-ended input signal to a differential output signal. The amplifier comprises a first transistor, a second transistor, a third transistor and a fourth transistor. The first transistor, configured in common-source or common-emitter mode, receives the single-ended input signal and generates a first part of the differential output signal. The second transistor, also configured in common-source or common-emitter mode, generates a second part of the differential output signal. The third and fourth transistors are capacitively cross-coupled. The amplifier further comprises inductive degeneration such that a source or emitter of the first transistor is connected to a first inductor and a source or emitter of the second transistor is connected to a second inductor.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: October 22, 2019
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Pete Sivonen, Jarkko Jussila, Sami Vilhonen
  • Patent number: 10455497
    Abstract: Selective activation of communications services on power-up of a remote unit(s) in a wireless communication system (WCS) based on power consumption is disclosed. To avoid a remote unit drawing more power than is allowed and risking shutting down all of its communications services, after a remote unit in the WCS is powered-up to start its operations, the remote unit selectively activates its different communications services. The remote unit selectively activates communications services based on the power consumption of the remote unit to avoid the remote unit drawing more power than is allowed. If activating a next communications service would cause the remote unit to draw more power than is allowed, the remote unit discontinues activating additional communications services. In this manner, the already activated communications services in the remote unit can remain operational without risking powering down of the remote unit and discontinuing all of its communications services.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: October 22, 2019
    Assignee: Corning Optical Communications LLC
    Inventors: Ron Hagag, Dror Harel
  • Patent number: 10454434
    Abstract: A communication unit includes a first input terminal to which a first transmission signal based on a first communication standard is input, a second input terminal to which a second transmission signal based on a second communication standard is input, a first transmission signal amplifier circuit outputting a first amplified transmission signal, or outputting a second amplified transmission signal, a first input-output terminal outputting the first amplified transmission signal or the second amplified transmission signal, and at least one of a first reception signal and a second reception signal inputted to the first input-output terminal, a first reception signal amplifier circuit performing at least one of operation of outputting a first amplified reception signal and operation of outputting a second amplified reception signal, a first output terminal outputting the first amplified reception signal, and a second output terminal outputting the second amplified reception signal.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: October 22, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Tsuyoshi Sato, Hidetoshi Matsumoto, Kiichiro Takenaka, Masahiro Ito, Satoshi Tanaka, Takahiro Katamata
  • Patent number: 10455529
    Abstract: A multi-standard transmitter architecture with digitally upconverted intermediate frequency (IF) outphased signals is disclosed. The transmitter architecture includes a Gallium Nitride (GaN) power amplifier (PA) circuit having a Current Mode Class-D (CMCD) configuration. The GaN PA circuit includes a lower switching device electrically coupled to an input to receive an input RF signal and an upper switching device to switchably electrically couple the first switching device to a power supply to drive an antenna circuit based on the input RF signal. Thus, a reconfigurable transmitter architecture is disclosed that utilizes a high-speed Gallium Nitride (GaN) driver to achieve a peak drain efficiency of at least 85% while delivering output power of 10 W at 1 GHz frequency, for example.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: October 22, 2019
    Assignee: Khalifa University of Science and Technology
    Inventors: Mihai Sanduleanu, Shoeb Shaikh
  • Patent number: 10447372
    Abstract: Select, from transmit paths within the transmitter chip, a first transmit path for a first transmit signal and a second transmit path for a second transmit signal. The transmit paths are associated with a plurality of antenna elements of an antenna array. Determine of an added signal and/or a subtracted signal associated with the first transmit signal and the second transmit signal. Determine at least one of a first signal strength value of the added signal or a second signal strength value of the subtracted signal. Adjust a first signal parameter of the second transmit signal relative to a corresponding first signal parameter of the first transmit signal until the first signal strength value is a first value or the second signal strength value is a second value. Calibrate an offset of the corresponding first signal parameter based on the adjusted first signal parameter in the second transmit path.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: October 15, 2019
    Assignee: MOVANDI CORPORATION
    Inventors: Kartik Sridharan, Ahmadreza Rofougaran, Michael Boers, Seunghwan Yoon, Sam Gharavi, Donghyup Shin, Farid Shirinfar, Stephen Wu, Maryam Rofougaran
  • Patent number: 10403960
    Abstract: Systems and methods are disclosed for antenna optimization in an information handling system. A portable information handling system includes a chassis and a plurality of antennas coupled to the chassis. The plurality of antennas is capable of communicating in a multiple-input and multiple-output (MIMO) antenna configuration with a wireless-enabled device. The system includes an antenna control module communicatively coupled to the plurality of antennas. The antenna control module is configured to detect a change in at least one of a physical configuration of the chassis and an environment surrounding the portable information handling system, the change affecting a performance one or more of the plurality of antennas. The antenna control module is also configured to, based on the change, update a MIMO antenna list from the plurality of antennas. The MIMO antenna list represents active antennas for communicating with the wireless-enabled device.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: September 3, 2019
    Assignee: Dell Products L.P.
    Inventors: Andrew Thomas Sultenfuss, Mitchell Anthony Markow, Kevin J. McCann
  • Patent number: 10381995
    Abstract: An interference sensor device is disclosed. The interference sensor device includes a first conductive plate, a second conductive plate aligned parallel to the first conductive plate, a non-conductive matter between the first conductive plate and the second conductive plate and a coil electrically coupled to the first conductive plate and the second conductive plate.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: August 13, 2019
    Assignee: NXP B.V.
    Inventors: Anthony Kerselaers, Liesbeth Gommé
  • Patent number: 10341008
    Abstract: Aspects of the subject disclosure may include, for example, a repeater device having a first coupler to extract downstream channel signals from first guided electromagnetic waves bound to a transmission medium of a guided wave communication system. An amplifier amplifies the downstream channel signals to generate amplified downstream channel signals. A channel selection filter selects one or more of the amplified downstream channel signals to wirelessly transmit to the at least one client device via an antenna. A second coupler guides the amplified downstream channel signals to the transmission medium of the guided wave communication system to propagate as second guided electromagnetic waves. Other embodiments are disclosed.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: July 2, 2019
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: Robert Bennett, Paul Shala Henry, Irwin Gerszberg, Farhad Barzegar, Donald J Barnickel, Thomas M. Willis, III