With Feedback Of Modulated Output Signal Patents (Class 455/126)
  • Patent number: 11038474
    Abstract: Apparatus and methods provide predistortion for a phased array. Radio frequency (RF) sample signals from phased array elements are provided along return paths and are combined by a hardware RF combiner. Phase shifters are adjusted such that the RF sample signals are phase-aligned when combined. Adaptive adjustment of predistortion for the amplifiers of the phased array can be based on a signal derived from the combined RF sample signals.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: June 15, 2021
    Assignee: ANALOG DEVICES GLOBAL UNLIMITED COMPANY
    Inventors: Ahmed I. Khalil, Patrick Pratt
  • Patent number: 11018628
    Abstract: Antenna impedance prediction via power amplifier parameter. In some embodiments, a power amplification system can include a splitter circuit and a combiner circuit, and first and second Doherty power amplifiers implemented in a quadrature configuration between the splitter circuit and the combiner circuit, with each Doherty power amplifier including a carrier amplifier and a peaking amplifier. The power amplification system can further include a monitoring circuit configured to measure at least some of base currents associated with the carrier and peaking amplifiers of the first and second Doherty power amplifiers, and generate a signal capable of adjusting a load impedance presented to an output of the combiner circuit.
    Type: Grant
    Filed: March 30, 2019
    Date of Patent: May 25, 2021
    Assignee: Skyworks Solutions, Inc.
    Inventor: Philip John Lehtola
  • Patent number: 10992335
    Abstract: A transceiver for reducing a distortion component within a baseband receive signal is provided. The distortion component is caused by a baseband transmit signal. The transceiver includes a filter configured to filter the baseband transmit signal using a configurable transfer function to generate a modified baseband transmit signal. The configurable transfer function is based on a leakage component in the baseband receive signal, wherein the leakage component is caused by the baseband transmit signal. The transceiver further includes a processing unit configured to generate, based on the modified baseband transmit signal, an envelope signal representing the envelope of the modified baseband transmit signal. Moreover, the transceiver includes a combiner configured to combine the baseband receive signal and a signal related to the envelope signal.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: April 27, 2021
    Assignee: Apple Inc.
    Inventors: Ahmed Elmaghraby, Ram Kanumalli, Werner Schelmbauer, Stefan Herzinger, Peter Noest
  • Patent number: 10992308
    Abstract: An in-situ delay measurement is performed for an envelope-tracking power amplifier of an RF input signal. Because the delay measurement is in-situ, the delay measurement avoids the necessity to down convert and digitize a version of an RF output signal from the envelope-tracking power amplifier.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: April 27, 2021
    Assignee: QUALCOMM Incorporated
    Inventors: Chirag Sthalekar, Leon Metreaud, Hakan Inanoglu, Xiangdong Zhang
  • Patent number: 10951328
    Abstract: Systems and methods for reducing undesirable behaviors in RF communications in accordance with embodiments of the invention are disclosed. In one embodiment, a vehicle telematics device includes a processor, a transceiver, an amplifier, and a memory connected to the processor and storing a transmission control application, wherein the transceiver is connected to the amplifier, the amplifier is connected to the processor, and the transmission control application directs the processor to format data to be transmitted by the transceiver, determine a leading bit-edge of the transceiver signal, direct the amplifier to sequentially amplify the transceiver signal, transmit data, and direct the amplifier to sequentially de-amplify the transceiver signal.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: March 16, 2021
    Assignee: CalAmp Wireless Networks Corporation
    Inventor: Yvonne Whelan
  • Patent number: 10938491
    Abstract: A loop-back test is to be executed during wireless transmission in a circuit that performs wireless communication. A transmission circuit modulates a transmission information signal and supplies the transmission information signal, as a transmission signal, to an antenna. A loop-back test signal generation circuit modulates a predetermined signal to be modulated and supplies the predetermined signal to be modulated as a loop-back test signal. A selection unit selects one of a reception signal from the antenna or the loop-back test signal, and supplies the selected signal as a signal to be demodulated. A reception circuit demodulates the signal to be demodulated and acquires a reception information signal. A test circuit compares the reception information signal and the predetermined signal to be modulated.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: March 2, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventor: Kenji Komori
  • Patent number: 10917098
    Abstract: A device for wireless communication using a plurality of antennas including a first local oscillation generator configured to generate a first local oscillation signal for up-converting a first transmission signal, a second local oscillation generator configured to generate a second local oscillation signal for up-converting a second transmission signal, and a phase difference detector configured to, detect a first phase difference between the first local oscillation signal and the second local oscillation signal, and generate a first phase compensation signal based on the first phase difference for adjusting a phase of at least one of the first transmission signal or the second transmission signal.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: February 9, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jaehyuk Jang, Sangwook Han, Shinwoong Kim, Jaeyoung Kim, Chulho Kim
  • Patent number: 10911056
    Abstract: A novel and useful apparatus for and method of software based phase locked loop (PLL). The software based PLL incorporates a reconfigurable calculation unit (RCU) that is optimized and programmed to sequentially perform all the atomic operations of a PLL or any other desired task in a time sharing manner. An application specific instruction-set processor (ASIP) incorporating the RCU includes an instruction set whose instructions are optimized to perform the atomic operations of a PLL. The RCU is clocked at a fast enough processor clock rate to insure that all PLL atomic operations are performed within a single PLL reference clock cycle.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: February 2, 2021
    Assignee: Texas Instruments Incorporated
    Inventors: Roman Staszewski, Robert B. Staszewski, Fuqiang Shi
  • Patent number: 10903799
    Abstract: An amplifying apparatus includes a variable gain amplifying circuit configured to operate in a gain mode selected from a plurality of gain modes in response to a first control signal during operation in an amplification mode, a variable attenuation circuit configured to have an attenuation value that is adjusted in response to a second control signal, and a phase compensation value which compensates for a phase distortion in the selected gain mode, and a control circuit configured to control the selecting of the gain mode, the adjusting of the attenuation value and the phase compensation value, based on the first and second control signals.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: January 26, 2021
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyun Jin Yoo, Jong Mo Lim, Yoo Sam Na, Hyung Jun Cho, Yoo Hwan Kim, Hyun Hwan Yoo
  • Patent number: 10893485
    Abstract: A method includes: setting a maximum transmit power of common channels of a plurality of carriers based on a signal coverage; setting a maximum transmit power of traffic channels of the plurality of carriers; and transmitting, for each scheduling period and based on the maximum transmit power of the common channels of the plurality of carriers, the maximum transmit power of the traffic channels of the plurality of carriers and a shared transmit power of the traffic channels of the plurality of carriers in the scheduling period, the plurality of carriers in the scheduling period.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: January 12, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Guoqiang Yao, Guowei Li, Yan Zhang, Hongbao Li
  • Patent number: 10880764
    Abstract: According to some implementations, a radio-frequency (RF) device includes a communication interface coupled to a serial bus. The RF device also includes a monitoring component coupled to the communication interface, the monitoring component configured to monitor the serial bus for first data transmitted to a first device coupled to the serial bus and configure the RF device based on the first data.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: December 29, 2020
    Assignee: Skyworks Solutions, Inc.
    Inventors: David Steven Ripley, James Henry Ross, Philip John Lehtola, David Richard Pehlke, James Phillip Young, Gregory A. Blum, David Alan Brown
  • Patent number: 10833388
    Abstract: The present disclosure relates to couplers suitable for use in communications systems. The coupler comprises: a main conductive line comprising a first main section and a second main section; a first auxiliary conductive line comprising a first auxiliary section and a first end portion, wherein the first auxiliary section is configured to couple with the main conductive line to generate a first coupled signal; a second auxiliary conductive line comprising a second auxiliary section and a second end portion, wherein the second auxiliary section is configured to couple with the main conductive line to generate a second coupled signal; a transmission module that is configured to combine the first coupled signal and the second coupled signal into an output signal of the microstrip coupler and to pass the output signal to an outlet; and a coupled port coupled to the outlet and used for outputting the output signal.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: November 10, 2020
    Assignee: CommScope Technologies LLC
    Inventors: Honghui Chen, Yuemin Li, Haifeng Li
  • Patent number: 10826668
    Abstract: Provided is a radio communication device which can prevent interference between SRS and PUCCH when the PUCCH transmission bandwidth fluctuates and suppress degradation of CQI estimation accuracy by the band where no SRS is transmitted. The device includes: an SRS code generation unit (201) which generates an SRS (Sounding Reference Signal) for measuring uplink line data channel quality; an SRS arrangement unit (202) which frequency-multiplexes the SRS on the SR transmission band and arranges it; and an SRS arrangement control unit (208) which controls SRS frequency multiplex so as to be uniform in frequency without modifying the bandwidth of one SRS multiplex unit in accordance with the fluctuation of the reference signal transmission bandwidth according to the SRS arrangement information transmitted from the base station and furthermore controls the transmission interval of the frequency-multiplexed SRS.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: November 3, 2020
    Assignee: Panasonic Corporation
    Inventors: Atsushi Matsumoto, Daichi Imamura, Takashi Iwai, Yoshihiko Ogawa, Tomofumi Takata, Katsuhiko Hiramatsu
  • Patent number: 10818478
    Abstract: In a high frequency generator, a high frequency generated by an IQ modulation of a vector multiplier and a amplification of an amplifier is outputted through an output unit. An directional coupler outputs a first high frequency including a part of traveling waves and a second high frequency including a part of reflected waves. A control units obtains an estimated value of each of an in-phase component and an orthogonal component of the traveling waves in the output unit, and an in-phase component and an orthogonal component of the reflected waves in the output unit by performing a first matrix operation that is an operation of four polynomials, each including as multi-variables an in-phase component and an orthogonal component of a first high frequency and an in-phase component and an orthogonal component of the second high frequency.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: October 27, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventor: Mitsutoshi Ashida
  • Patent number: 10797389
    Abstract: An embodiment of a non-invasive beamforming add-on apparatus couples to an existing antenna port and rectifies the beam azimuth in the upstream and downstream directions. The apparatus comprises input circuitry that is configured to receive one or more signals from a neighboring node of the linear wireless sensor network; first amplifier circuitry configured to adjust an amplitude of a respective received signal in accordance with a weighting coefficient and invoke a desired phase to a carrier frequency of the received signal thereby forming a first amplified signal; and second amplifier circuitry configured to adjust a gain of the first amplified signal towards upstream and downstream neighbors of the linear wireless sensor in the linear wireless sensor network.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: October 6, 2020
    Assignee: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Ahmed Bader, Mohamed-Slim Alouini
  • Patent number: 10756770
    Abstract: A system comprises an antenna, a port converting device, an information transmission device, a shield case, and a reference voltage end; wherein the antenna, the port converting device, and the information transmission device are connected sequentially, and the information transmission device is disposed within the shield case, and both the shield case and the port converting device is connected with the reference voltage end; the antenna is configured for a conversion between a radio frequency signal and a single-ended signal; the port converting device is configured for a conversion between the single-ended signal and target differential mode signals; the information transmission device is configured to transmit and process the target differential mode signals; and parameters of components in the port converting device is determined according to a preset communication frequency and a voltage amplitude and phase of a differential mode signal.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: August 25, 2020
    Assignee: Contemporary Amperex Technology Co., Limited
    Inventors: Yizhen Hou, Zhimin Dan, Wei Zhang, Jiechao Luo, Wenbin Lu, Jia Xu, Teng Yu
  • Patent number: 10644883
    Abstract: Disclosed herein are technologies regarding a communication device and server which are capable of cryptographic communication based on quantum cryptography. A communication device for quantum cryptography authentication includes: an optical communication unit configured to receive a series of first quantum signals generated by passing through a first quantum filter of the communication device; a quantum signal generation unit configured to generate the first quantum signals by setting up the first quantum filter in a reception path for a series of second quantum signals generated and sent by a server; and a processor configured to select the setup of the first quantum filter based on a series of randomly generated first quantum states, and to control the quantum signal generation unit to generate the first quantum signals by using the first quantum filter.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: May 5, 2020
    Assignee: University of Seoul Industry Cooperation Foundation
    Inventor: Do Yeol Ahn
  • Patent number: 10594343
    Abstract: A circuit arrangement for generating a high-frequency, analog transmission signal, in particular a high-frequency, analog single-carrier transmission signal. The circuit arrangement has a synthesis apparatus for generating the high-frequency, analog transmission signal on the basis of a discrete frequency spectrum of a digital modulated, baseband signal. A transmission device for transmitting a high-frequency, analog transmission signal. The transmission device having an antenna for transmitting the transmission signal, and a synthesis apparatus for generating the high-frequency, analog transmission signal, on a basis of a discrete frequency spectrum of a digital, modulated baseband signal. A method for transmitting a high-frequency, analog transmission signal, which is a high-frequency, analog single-carrier transmission signal.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: March 17, 2020
    Assignee: RHEINISCH-WESTFRĂ„LISCHE TECHNISCHE HOCHSCHULE AACHEN
    Inventor: Oner Hanay
  • Patent number: 10530196
    Abstract: In an example, an integrated circuit includes a communication and control unit. The communication and control unit controls an inverter that applies an alternating current output signal to a transmission coil for reception by a receiver. The communication and control unit causes the inverter to provide a first and second transmit powers to the transmission coil, and the communication unit receives a first and second power received signals from the receiver in response to the first and second transmit powers. The communication and control unit determines a first gain and offset using the first transmit power, the first power. When a third transmit power greater than the second transmit power is transmitted by the transmission coil, the communication and control unit determines a second gain and a second offset using the first transmit power, the first power received signal, the third transmit power and a third power received signal.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: January 7, 2020
    Assignee: Texas Instruments Incorporated
    Inventors: Eric Gregory Oettinger, Kalyan N. Siddabattula
  • Patent number: 10530407
    Abstract: The present invention relates to an adaptive filtering method for an amplitude-modulated radio signal (AM), the radio signal having a bandwidth, the method comprising: ? transforming the radio signal into baseband, ? measuring the level of noise and/or detecting the presence of an adjacent radio signal (A), of a first side of the bandwidth, ? selecting or not selecting a first filter (F) numbered X, from among N first filters capable of cutting the amplitude-modulated radio signal of the first side of the bandwidth, ? if a first filter numbered X is selected and applied to the amplitude-modulated radio signal transformed into baseband, the automatic selection of a second filter (F?) numbered Y, Y being greater than or equal to X, from among N second filters, capable of cutting the amplitude-modulated radio signal from the opposite side to the first side of the bandwidth.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: January 7, 2020
    Assignees: Continental Automotive France, Continental Automotive GmbH
    Inventor: Grégoire Hivert
  • Patent number: 10505773
    Abstract: Methods, systems, and devices for wireless communication are described. Beams used for synchronization signals may be associated with beams used for reference signals. For example, a base station may identify a first set of millimeter wave (mmW) communication beams to transmit a synchronization signal. The base station may transmit the synchronization signal and identify a second set of mmW communication beams to transmit a reference signal, where the second set of mmW communication beams may be associated with the first set of beams. For instance, the first set and second set of mmW communication beams may be the same or similar. The base station may then transmit the reference signal on the second set of mmW communication beams. A user equipment may in turn identify the first and second sets of beams as being associated, and receive the reference signal on the second set of mmW communication beams.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: December 10, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Bilal Sadiq, Sundar Subramanian, Tao Luo, Sumeeth Nagaraja, Juergen Cezanne, Ashwin Sampath, Navid Abedini, Muhammad Nazmul Islam
  • Patent number: 10476445
    Abstract: An exemplary system comprises a linearizer module, a first upconverter module, a power amplifier module, a signal sampler module, and a downconverter module. The linearizer module may be configured to receive a first intermediate frequency signal and to adjust the first intermediate frequency signal based on a reference signal and a signal based on a second intermediate frequency signal. The first upconverter module may be configured to receive and up-convert a signal based on the adjusted first intermediate frequency signal to a radio frequency signal. The power amplifier module may be configured to receive and amplify a power of a signal based on the radio frequency signal. The signal sampler module may be configured to sample a signal based on the amplified radio frequency signal. The downconverter module may be configured to receive and down-convert a signal based on the sampled radio frequency signal to the second intermediate frequency signal.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: November 12, 2019
    Assignee: Aviat U.S., Inc.
    Inventors: Frank Matsumoto, Youming Qin, David C. M. Pham, Jayesh Nath, Ying Shen
  • Patent number: 10461868
    Abstract: Systems and methods for reducing undesirable behaviors in RF communications in accordance with embodiments of the invention are disclosed. In one embodiment, a vehicle telematics device includes a processor, a transceiver, an amplifier, and a memory connected to the processor and storing a transmission control application, wherein the transceiver is connected to the amplifier, the amplifier is connected to the processor, and the transmission control application directs the processor to format data to be transmitted by the transceiver, determine a leading bit-edge of the transceiver signal, direct the amplifier to sequentially amplify the transceiver signal, transmit data, and direct the amplifier to sequentially de-amplify the transceiver signal.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: October 29, 2019
    Assignee: CalAmp Wireless Networks Corporation
    Inventor: Yvonne Whelan
  • Patent number: 10462844
    Abstract: A dynamic packet relay method of a personal area network (PAN) coordinator in a sensor network includes receiving a Child_Register message that includes information about a device associated with a coordinator and building or updating a network hierarchical structure; monitoring reception of a packet or a beacon from the coordinator and determining whether the coordinator is defective or not; and in response to a determination that the coordinator is defective, changing the current coordinator to one of devices belonging to a PAN as a new coordinator.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: October 29, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Geon Min Yeo, Young Il Kim, Yong Tae Lee, Dae Geun Park, Sun Hwa Lim, Won Ryu
  • Patent number: 10447452
    Abstract: An approach is provided for generating response frames. Incoming frames are processed by a receive controller to determine type and attributes. Based on the type and the attributes of the incoming frame, a response frame is constructed and transmitted by a transmit controller. A response frame is constructed by setting values in a frame template. A block ACK can be implemented by means of a block ACK scoreboard.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: October 15, 2019
    Assignees: ADVANCED MICRO DEVICES, INC., AMD FAR EAST LTD.
    Inventors: Douglas A. Mammoser, Sebastian Ahmed
  • Patent number: 10439662
    Abstract: A mobile radio compensator (1) comprises an adjustable signal-level amplification means (12a, 12b) and a central detection means (13) in order to detect the signal level of the transmission signals. An adjustment and/or control means (14) can adjust a signal amplification, produced by the signal-level amplification means (12a, 12b), of the transmission signals on the basis of the signal level detected by the detection means (13). A decoupling means (15) comprising at least two decoupling signal paths (15a, 15b, 15c) is provided, wherein the decoupling signal paths (15a, 15b, 15c) are connected to a power adding means (19) of which the output (20) is in turn connected to the detection means (13). The decoupling means (15) comprises a filter means (25, 25a, 25b, 25c) which is arranged on or in the at least two decoupling signal paths (15a, 15b, 15c), wherein the passbands (?f1, ?f2, ?f3) for each of the at least two decoupling signal paths (15a, 15b, 15c) differ.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: October 8, 2019
    Assignee: Kathrein SE
    Inventors: Martin Haun, Rudolf Weber
  • Patent number: 10419136
    Abstract: According to an embodiment, a communication device includes a phase-shifting circuit that shifts a phase of a local signal and supplies it to an orthogonal demodulator. The phase-shifting circuit includes first and second signal input ends that are supplied with an output signal of a local oscillator between both ends thereof, a frequency divider that has first and second input ends, and a switching part that is provided between the first and second signal input ends and the first and second input ends of the frequency divider and switches connection between the first and second signal input ends and the first and second input ends of the frequency divider.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: September 17, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yousuke Hagiwara, Yuki Fujimura, Hiroyuki Kobayashi, Ichiro Seto, Shigehito Saigusa
  • Patent number: 10359822
    Abstract: An embodiment includes a system, comprising: a processor; a plurality of memories; and a control circuit coupled to the processor and the memories, and configured to: receive a power limit; measure a power consumption of the processor and the memories; and iteratively change a plurality of operating parameters of the processor and the memories to optimize an objective function associated with the system to operating states where the power consumption is less than or equal to the power limit.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: July 23, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Inseok Stephen Choi, Byoung Young Ahn, Yang Seok Ki
  • Patent number: 10356878
    Abstract: A light emitting device driver circuit includes: a power conversion circuit, an error amplifier circuit, a sample-and-hold circuit, a load current generation circuit and a feed-forward capacitor. When the light emitting device driver circuit is in a disable phase, the sample-and-hold circuit connects a feedback signal with a second reference voltage and the sample-and-hold circuit disconnects the feedback signal from a load node, whereby the feed-forward capacitor samples a sample voltage and holds it after the disable phase transits to an enable phase. In the enable phase, the sample-and-hold circuit disconnects the feedback signal from the second reference voltage and the sample-and-hold circuit connects the feedback signal with the load node, so that during a predetermined period following the transition, there is a sufficient difference between two input terminals of the error amplifier circuit so that the load current is raised to a desired current level within the predetermined period.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: July 16, 2019
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventors: Huan-Chien Yang, Tsung-Wei Huang, Hui-Wen Cheng, Shui-Mu Lin
  • Patent number: 10276911
    Abstract: In one example, a signal processing circuit including a directional coupler and a termination part is disclosed. The directional coupler includes a main line as a transmission path of an RF signal and a sub-line constituting a coupled line together with the main line. The termination part includes devices connectable between ground and a first port at an end of the sub-line. The signal processing circuit switches, depending on a frequency of the RF signal, the devices of the termination part to be connected to the first port. The phase of a return signal of a signal input as a coupling signal to the termination part via the first port is opposite to the phase of an isolation signal supplied to a second port at the other end of the sub-line and connected to an output port of the coupling signal.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: April 30, 2019
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Kenji Noguchi, Kazumasa Kohama
  • Patent number: 10249426
    Abstract: A tunable inductor arrangement includes a first winding part connected at one end to a first input of the inductor arrangement, a second winding part connected at one end to the other end of the first winding part, a third winding part connected at one end to a second input of the inductor arrangement, and a fourth winding part connected at one end to the other end of the third winding part. For tuning, the inductor arrangement includes a switch arrangement switchable between a first setting series-connecting the first and third winding parts between the inputs, and a second setting series-connecting the first, second, fourth and third winding parts between the inputs. The first and third winding parts are arranged on a chip or substrate with essentially common magnetic fields, and the second and fourth winding parts are arranged to cancel electro-magnetic coupling with the first and third winding parts.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: April 2, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventor: Thomas Mattsson
  • Patent number: 10171056
    Abstract: An apparatus and a method for improving nonlinearity of a power amplifier in a wireless communication system are provided. A transmission apparatus in a wireless communication system comprises: at least one processor; a transceiver; and an amplifier for amplifying a signal provided from the transceiver, wherein if a power of a signal inputted into the transceiver is smaller than a reference value, the transceiver attenuates the power of the signal based on a gain compensation value corresponding to the power of the signal.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: January 1, 2019
    Assignee: Samsung Electronics Co., Ltd
    Inventors: In-Kyu Lee, Woo-Yeun Kim, Hyung-Bum Kim, Min-Hee Sung, Young-Min Song
  • Patent number: 10158384
    Abstract: An electronic device may be provided with wireless circuitry and control circuitry. The wireless circuitry may include multiple antennas and transceiver circuitry. An antenna in the electronic device may have an inverted-F antenna resonating element formed from portions of a peripheral conductive electronic device housing structure and may have an antenna ground that is separated from the antenna resonating element by a gap. The antenna may also include an indirectly-fed antenna resonating element that is indirectly fed by a harmonic mode of the inverted-F antenna resonating element via near field electromagnetic coupling. The indirectly-fed antenna resonating element may be a slot. The antenna ground may define at least three edges of the slot and the slot may be aligned with a dielectric-filled gap in the peripheral conductive housing structures. An adjustable circuit may be coupled across the slot to tune the indirectly-fed antenna resonating element.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: December 18, 2018
    Assignee: Apple Inc.
    Inventors: Salih Yarga, Xu Gao, Georgios Atmatzakis, Xu Han, Bilgehan Avser, Hao Xu, Yijun Zhou, Mattia Pascolini
  • Patent number: 10108827
    Abstract: A transaction card may monitor an amount of electric current induced in a first near-field communication (NFC) component of a transaction card. Electric current may be induced in the first NFC component when the first NFC component is within an electromagnetic field generated by a second NFC component of a transaction terminal. The transaction card may dynamically activate one or more output components associated with the transaction card based on the amount of electric current induced in the first NFC component. The one or more output components may indicate whether the transaction card can communicate with the transaction terminal. The transaction card may perform an action related to completing a transaction after determining that the amount of electric current induced in the NFC component satisfies a first threshold. The first threshold may indicate that the transaction card can communicate with the transaction terminal.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: October 23, 2018
    Assignee: Capital One Services, LLC
    Inventors: David Kelly Wurmfeld, Adam Koeppel, Tyler Locke
  • Patent number: 10084489
    Abstract: A first antenna and a first band switch with a first duplexer operatively coupled to a first output of the first band switch. The first duplexer provides a transmit sub-band feed and a first receive sub-band feed for a first RF band. A second duplexer is operatively coupled to a second output of the first band switch, and provides a transmit sub-band feed and a first receive sub-band feed for a second RF band. A second antenna is operatively coupled to an input of a second band switch. A first antenna matching network for the second antenna is operatively coupled to a first output of the second band switch, and provides a second receive sub-band feed for the first RF band. A second antenna matching network is operatively coupled to a second output of the second band switch, and provides a second receive sub-band feed for the second RF band.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: September 25, 2018
    Assignee: Motorola Mobility LLC
    Inventors: John Mura, Brian Bremer, Abu Sayem
  • Patent number: 10003480
    Abstract: Apparatuses and methods for performing asynchronous multicarrier communications are provided. One such method involves generating, at a first wireless device, a waveform including one or more carriers, shaping the waveform to reduce interference between the waveform and adjacent waveforms, and transmitting, on a spectrum, the shaped waveform asynchronously.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: June 19, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Joseph Binamira Soriaga, Tingfang Ji, John Edward Smee, Naga Bhushan, Peter Gaal, Krishna Kiran Mukkavilli, Alexei Yurievitch Gorokhov
  • Patent number: 9918237
    Abstract: Apparatus comprises means for monitoring at least one criterion for an adjustment of a transmit power of a positioning packet by a mobile apparatus, the positioning packet enabling a determination of a position of the mobile apparatus to be made; and means for, when it is detected that the at least one criterion is met, causing an adjustment of the transmit power of positioning packets at the mobile apparatus.
    Type: Grant
    Filed: September 5, 2011
    Date of Patent: March 13, 2018
    Assignee: Provenance Asset Group LLC
    Inventors: Jussi Ruutu, Markku Anttoni Oksanen, Ville Valtteri Ranki, Antti Paavo Tapani Kainulainen, Fabio Belloni
  • Patent number: 9913152
    Abstract: A discovering master communication device for discovering high resources consuming wireless network resources to optimize resources consumption during network discovery session(s) within a group of nearby communication devices, comprising: a first interface for communicating with remote site(s) over high resources consuming wireless network(s), a second interface for communicating with nearby device(s) which include similar first interface and located within range of the second interface. For a similar communication session, resources consumption of the second interface is lower compared to the first interface, and processor(s) executing a stored code for activating the first interface to discover availability of high resources consuming wireless network resource(s) with assistance of the nearby device(s), sending availability message to the nearby device(s) over the second interface, and sending master assignment message to one of the nearby device(s) over the second interface.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: March 6, 2018
    Assignee: International Business Machines Corporation
    Inventors: Aharon Abadi, Nili Guy-Ifergan, Yossi Mesika, Oleg Sternberg
  • Patent number: 9882627
    Abstract: A repeater configured to dynamically affect the gain level of the repeater in response to the input signal power level over time. The repeater system includes a gain hold processor executing a gain hold algorithm. The gain hold algorithm preempts a large up-step in signal power level to follow a large down-step in signal power level. After a large up-step in input signal is detected, the system holds the gain level in response to a drop in input signal level after the large up-step. The gain is held at the level set by the large burst of input signal power to the repeater. In response to a larger up-step in signal power level, the system will lower the gain. In response to a large down-step in signal power after the larger up-step in signal power level, the system will hold the gain level of the repeater. During a prolonged low-power level or zero power signal at the input of the repeater, the system will slowly raise the gain level of the repeater over time.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: January 30, 2018
    Assignee: Nextivity, Inc.
    Inventor: Ian Riphagen
  • Patent number: 9877291
    Abstract: A wireless transceiver apparatus includes a power detector, an analog signal receiving circuit at wireless signal reception side, and a processing circuit. The power detector is configured at wireless signal transmission side and used for detecting power of a power amplifier on a transmitting path of wireless signal transmission side. The analog signal receiving circuit is couple to the power detector and used for receiving a wireless signal form an antenna. Under signal reception mode, the analog signal receiving circuit transmits the received wireless signal to the processing circuit. Under interference detection mode, the analog signal receiving circuit transfers the received wireless signal (as interference) to the power detector, and the power detector is used for detecting the power of wireless signal to measure an interference power value and transmit the value to the processing circuit.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: January 23, 2018
    Assignee: PixArt Imaging Inc.
    Inventor: Peng-Sen Chen
  • Patent number: 9866250
    Abstract: An apparatus for satisfying Specific Absorption Rate (SAR) compliance criteria including a first capacitance sensor, a second capacitance sensor, a memory, and a processor. The memory is configured to store pre-established proximity regions that include a free space region of proximity based on baseline capacitance measurements obtained from the sensors when no human body is proximate a wireless device and a first region of proximity based on initial capacitance measurements obtained from the sensors when the human body is spaced apart from the wireless device by a first predetermined separation distance. The processor is configured to instruct a radio frequency (RF) transmitter to operate at a first output power when subsequent capacitance measurements received from the sensors are within the free space region of proximity and at a second output power, less than the first output power when the subsequent capacitance measurements are within the first region of proximity.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: January 9, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Ping Shi, Jinchun Ge
  • Patent number: 9866244
    Abstract: Multi-output electromagnetic couplers configured to detect multiple frequencies simultaneously, and devices and systems including same. In one example a multi-output electromagnetic coupler includes a main coupler transmission line extending between and electrically connecting an input port and an output port, a first coupled line section configured to couple electromagnetic power in a first frequency band from the main coupler transmission line to provide a first coupled output signal at a first coupled port, and a second coupled line section configured to couple electromagnetic power in a second frequency band from the main coupler transmission line to provide a second coupled output signal at a second coupled port simultaneously with the first coupled output signal being provided at the first coupled port.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: January 9, 2018
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Nuttapong Srirattana, David Scott Whitefield, David Ryan Story
  • Patent number: 9860760
    Abstract: A device implementing the subject scalable radio frequency communication system includes one or more primary radio frequency integrated circuits (RFICs) and at least one secondary RFIC. Each of the one or more primary RFICs is configured to receive an intermediate frequency (IF) signal from a baseband processor, upconvert the IF signal to a radio frequency (RF) signal, and transmit the RF signal to one or more secondary RFICs. The secondary RFICs under each of the one or more primary RFICs are configured to receive the RF signal from the corresponding primary RFIC, phase shift and amplify the RF signal, and transmit the RF signal via a plurality of antenna elements.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: January 2, 2018
    Assignee: AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD.
    Inventors: Alireza Tarighat Mehrabani, Michael Boers, Masoud Kahrizi, Tirdad Sowlati, Bagher Afshar, Payam Torab Jahromi, Sean Timothy Nicolson, Brima Babatunde Ibrahim
  • Patent number: 9807698
    Abstract: The present invention provides a data frame sending and receiving method and apparatus. The data frame sending method includes: receiving, by a first access point, first interference power parameters fed back by associated stations of the first access point, and receiving second interference power parameters sent by a second access point; if determining that a channel on which the first access point works is currently being occupied by the second access point, determining to-be-scheduled stations and transmission powers of the first access point for the to-be-scheduled stations, sending scheduling indication signaling at the determined transmission powers, and receiving scheduling indication response signaling sent by a schedulable station; and sending a data frame to the schedulable station at a transmission power corresponding to the schedulable station among the determined transmission powers.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 31, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Jiayin Zhang, Yingpei Lin, Yi Luo
  • Patent number: 9755690
    Abstract: A multiband wireless communication method for performing a reception operation in a second frequency band while performing a transmission operation in a first frequency band selectively changes a gain characteristic of a power amplifier (1 or 2) for performing the transmission operation so that gain is lowered in the second frequency band, based on performing of the reception operation.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: September 5, 2017
    Assignee: KYOCERA Corporation
    Inventor: Hideto Kanou
  • Patent number: 9755670
    Abstract: Directional couplers for front end modules (FEMs) are disclosed that include a first port configured to receive a radio-frequency (RF) signal, a second port connected to the first port via a first transmission line and configured to provide an RF output signal, a third port connected to a second transmission line, the second transmission line being electromagnetically coupled to the first transmission line, and a fourth port connected to the second transmission line. The directional couplers further include an adaptive complex termination circuit connected to the fourth port and configured to provide an adaptive complex termination impedance selected to optimize combined performance of the directional couplers over multiple frequency bands.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: September 5, 2017
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: David Ruimin Chen, Shiaw Wen Chang, Ede Peter Enobakhare, Brian Blu DuVerneay
  • Patent number: 9705616
    Abstract: The invention relates to a method for acoustically emitting audio broadcasting signals in a vehicle, wherein audio broadcasting signals can be transmitted into the vehicle and received there over a first and at least a second reception path, wherein the first reception path is evaluated by means of at least one criterion parameter on the basis of an audio broadcasting signal that can be received over the first reception path, and the second reception path is likewise evaluated by means of a criterion parameter on the basis of the audio broadcasting signal that can be received over the second reception path. During an emission of the audio broadcasting signal over one of the reception paths, a preparation phase for preparing a switchover from the current reception path to the other reception path is started on the basis of a comparison of the criterion parameter of the current reception path to a first threshold value (S1).
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: July 11, 2017
    Assignee: AUDI AG
    Inventors: Frank Oldewurtel, Christian Winter
  • Patent number: 9673843
    Abstract: A front end module including a first band amplifying processor configured to amplify signals in a first frequency band; a second band amplifying processor configured to amplify signals in a second frequency band; and a controller configured to output separate control voltages to the first and second band amplifying processors to control modes of the first and second band amplifying processors.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: June 6, 2017
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventor: Chan Yong Jeong
  • Patent number: 9659471
    Abstract: Provided is an anti-theft apparatus for a mobile device that does not disturb a customer when he or she observes and tests a mobile device in a shop and which can be efficiently used with various types of mobile devices. The anti-theft apparatus for a mobile device includes: a base attached to a back surface of a mobile device; a connecting terminal provided in a rear side of the base and connected to an access port of the mobile device; a separation sensor sensing separation of the mobile device from the base; and a distance control unit controlling the distance between the base and the connecting terminal.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: May 23, 2017
    Assignee: KUM OH ELECTRONICS CO., LTD.
    Inventor: Ki Sang Kim
  • Patent number: 9654120
    Abstract: A method includes generating a first signal based on a difference between a first frequency of a first voltage controlled oscillator (VCO) and a second frequency of a second VCO. The method further includes determining a gain of the first VCO at least partially based on the first signal.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: May 16, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Yiwu Tang, Yunliang Zhu, Chiewcharn Narathong, Sujiang Rong