Power Booster Patents (Class 455/571)
  • Patent number: 10530311
    Abstract: Aspects disclosed in the detailed description include an envelope tracking (ET) amplifier circuit. The ET amplifier circuit includes ET tracker circuitry configured to provide an ET modulated voltage, which tracks an ET modulated target voltage, to an amplifier circuit(s) for amplifying a radio frequency (RF) signal. The ET amplifier circuit also includes fast switcher circuitry that is activated to provide an alternate current (AC) current to the amplifier circuit(s) when the RF signal includes a higher number of resource blocks (RBs). However, the fast switcher circuitry and its associated control circuitry may incur a processing delay that can cause the fast switcher circuitry to lag behind the ET modulated target voltage. As such, the ET amplifier circuit further includes timing adjustment circuitry to help compensate for the processing delay, thus helping to maintain efficiency of the ET tracker circuitry for improved performance of the ET amplifier circuit.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: January 7, 2020
    Assignee: Qorvo US, Inc.
    Inventors: Nadim Khlat, Philippe Gorisse, Jeffrey D. Potts, Michael R. Kay
  • Patent number: 10396915
    Abstract: An interference cancellation repeater according to the inventive concept includes: a first transmission/reception processing unit configured to adjust a gain of a radio frequency (RF) input signal input via a link antenna communicatively coupled to a base station; an interference canceller configured to cancel and output an interference signal from an output signal of the first transmission/reception processing unit; and a gain controller configured to extract a signal with constant magnitude regardless of a change in user traffic from the output signal of the interference canceller, and to adjust the gain of the RF input signal to a predetermined level by controlling the first transmission/reception processing unit based on the extracted signal.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: August 27, 2019
    Assignee: SOLiD, INC.
    Inventor: Hyunchae Kim
  • Patent number: 10243527
    Abstract: A low noise amplifier comprising an adjustable gain and a variable impedance controller is provided. The low noise amplifier is configured to sink current and to adjust a shunt resistance substantially simultaneously.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: March 26, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Ping Yin, Robert Grant Irvine, Chengfang Liao, Zhihang Zhang
  • Patent number: 10218763
    Abstract: Methods and devices are disclosed for encoding and transmitting data sequences for low data rate applications. An encoded data sequence is transformed and used to shape a multi-carrier pulse to create a narrow-band signal for transmission. Time domain tails of the narrow-band signal may be removed to decrease overhead. The data may be first encoded to create a sparse modulated data sequence. Multi-carrier pulse shaping may be carried out using frequency division multiplexing (FDM) or filter bank multi-carrier (FBMC) techniques. Alternatively, single carrier pulse shaping may be used to create the narrow-band signal.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: February 26, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Javad Abdoli, Jianglei Ma, Ming Jia
  • Patent number: 10136398
    Abstract: The present disclosure relates to communication systems for a motor vehicle. In some embodiments, a communication device may provide, for example, car-to-car communication (vehicle-to-vehicle communication). A communication system for a motor vehicle, the system may include: a transceiver unit for generating transmission signals where at least two of the transmission signals differ in their signal power; a cable to transmit the transmission signals to an antenna via a controllable amplifier device; a power detector device capturing a respective power value correlated with a power of the transmission signals at a tapping point between the cable and the antenna; and a control device controlling the amplifier device on the basis of the captured power values. The transceiver device generates at least one of the transmission signals with a predetermined reference power. A reference value describing the reference power is permanently predefined in the control device.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: November 20, 2018
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Christian Morhart, Richard Owen
  • Patent number: 10122393
    Abstract: A circuit arrangement for compensating for an attenuation occurring in an antenna signal link between a mobile radio terminal and an antenna has at least one antenna signal amplifier in the antenna signal link and a control unit for adjusting a gain factor. The antenna signal conducted through an associated antenna signal amplifier is amplified or attenuated. The circuit arrangement has a detection unit for detecting an antenna signal power (PM, PA) of the antenna signal in the signal path of the antenna signal link. The control unit is configured for changing the gain factor, detecting a change, changing the transmit power (PM) of the mobile radio terminal, and adapting the gain factor to the coupling attenuation of the antenna signal link in dependence on a detected response of the mobile radio terminal.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: November 6, 2018
    Assignee: BURY SP.Z.O.O.
    Inventor: Bülent Solan
  • Patent number: 10097032
    Abstract: The application disclose a mobile terminal, a method for charging by a power source adapter for charging directly and a method for charging a mobile terminal, where firstly the power adaptor for charging directly is configured to communicate wirelessly with the mobile terminal, and then a strategy to identity the type of charging is designed in the mobile terminal dependent upon differently configured communication pins of a different charging device, so that the mobile terminal identifies automatically the type of the external device. Also a specialized rapid charging mode is designed for the power adaptor for charging directly, the battery of the mobile terminal being charged routinely is charged directly at large current by charging voltage output by the power adaptor for charging directly, and the volt value of the charging voltage is adjusted dynamically according to the varying voltage of the battery.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: October 9, 2018
    Assignees: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY CO., LTD., HISENSE USA CORPORATION, HISENSE INTERNATIONAL CO., LTD.
    Inventors: Ermeng Hu, Chunqian Li, Wenjuan Du
  • Patent number: 10033500
    Abstract: Systems and methodologies are described that facilitate indicating a type of waveform utilized for uplink transmission in a wireless communication environment. An access terminal can select a type of waveform from a set of possible waveform types. Moreover, a reference signal can be generated based upon the selected type of waveform. For instance, a sequence employed to yield the reference signal can be generated and/or chosen as a function of the selected type of waveform. According to another illustration, a tone location and/or a symbol location of the reference signal can be based upon the selected type of waveform. Further, the reference signal can be sent as part of the uplink transmission to the base station from the access terminal. The base station can detect the selected type of waveform utilized by the access terminal for the uplink transmission based upon parameter(s) recognized from the reference signal.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: July 24, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Tao Luo, Juan Montojo, I-Hsiang Wang
  • Patent number: 9787344
    Abstract: In some examples, a mobile device includes a radiation sensor configured to measure an amount of radiation surrounding a corresponding device that is communicatively connected to a second device and/or a third device, a comparator configured to compare the measured amount of radiation to a predetermined radiation threshold, a wireless communication manager configured to report to the second device and/or the third device a result output from the comparison module, and a collaboration manager configured to collaborate with the second device.
    Type: Grant
    Filed: May 13, 2014
    Date of Patent: October 10, 2017
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventors: Yue Xiao, Jun Fang
  • Patent number: 9681449
    Abstract: A method of controlling power in a transmitter in communication with a receiver in a wireless communication network is disclosed. The method comprising measuring a value of a first metric of signals received in the receiver, the first metric usable to generate a power control command; determining a measurement error of the first metric; generating the power control command based on the measured value of the first metric if the measurement error of the first metric does not exceed a threshold; and sending the power control command from the receiver to the transmitter.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: June 13, 2017
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Jinhua Liu, Zhiheng Guo, Hai Wang
  • Patent number: 9386561
    Abstract: This is provided a method for allocating pilots to a sub-frame. The sub-frame includes a plurality of blocks in time domain. The method includes allocating a data demodulation (DM) pilot used for demodulating data to two blocks spaced not contiguous with each other, and allocating a channel quality (CQ) pilot. System capacity can be increased, and degradation of performance incurred by a channel estimation error can be minimized.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: July 5, 2016
    Assignee: LG Electronics Inc.
    Inventors: Min Seok Noh, Seung Hee Han, Yeong Hyeon Kwon, Hyun Woo Lee, Dong Cheol Kim
  • Patent number: 9329662
    Abstract: Methods and apparatus, including computer program products, are provided for power savings. In one aspect there is provided a method. The method may include sending, by a user equipment, an indication to a network, wherein the indication represents whether there is a preference for power savings at the user equipment; and performing, at the user equipment when the indication is sent, one or more actions to implement power savings at the user equipment. Related apparatus, systems, methods, and articles are also described.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: May 3, 2016
    Assignee: NOKIA TECHNOLOGIES OY
    Inventors: Jussi-Pekka Koskinen, Lars Dalsgaard, Ilkka Keskitalo, Jorma Kaikkonen, Jarkko Koskela
  • Patent number: 9277545
    Abstract: A base station includes a transmitter configured to transmit a downlink controlling formation to a user equipment, the downlink control information being generated based on an uplink allocation information indicating a first frequency block corresponding to a first plurality of subcarriers which are contiguous in frequency and a second frequency block corresponding to a second plurality of subcarriers which are contiguous in frequency, wherein at least a subcarrier, which is not indicated by the uplink allocation information, is located between the first frequency block and the second frequency block; and a receiver configured to receive a reference signal including a reference signal sequence having a sequence length corresponding to a first bandwidth which is a summation of a second bandwidth of the first frequency block and a third bandwidth of the second frequency block.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: March 1, 2016
    Assignee: NEC Corporation
    Inventors: Takamichi Inoue, Kenji Koyanagi, Le Liu, Yoshikazu Kakura
  • Patent number: 9232470
    Abstract: A power supply circuit for the modem of a mobile telecommunications device comprises a battery, a modem status detection circuit for detecting whether the modem is in communication with a base station or is searching for a base station, a current or voltage booster, and a switching circuit controlled by the detection circuit for switching the current or voltage booster into and out of operation such that the booster provides additional current to the modem when it is searching for a base station.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: January 5, 2016
    Assignee: Cylon Global Technology Inc.
    Inventors: Glenn Webber, Eamonn Courtney, Jacqueline Cole-Courtney
  • Patent number: 9225289
    Abstract: A partial envelope tracking (PET) circuit for improving the dynamic range and the efficiency of a power amplifier amplifying high bandwidth signals is provided. The PET circuit includes a main supply path having a main valve (MV) connecting the power amplifier to a first power source; a storage capacitor connecting a junction node and the power amplifier; a supplementary supply path including a DV and a TV, each of the DV and the tracking valve connecting, in parallel between a second power source and the junction node; a supplementary current path including a GV connecting the junction node and a ground; and a valves control unit (VCU) configured to monitor an envelope tracking parameter to determine an operation mode of the circuit and a state of each of the MV, the GV, the DV, and the TV during each respective mode of operation.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: December 29, 2015
    Assignee: Paragon Communications Ltd.
    Inventor: Israel Bar-David
  • Patent number: 9189041
    Abstract: The present invention provides a method and an apparatus for controlling terminal power. The method includes the following steps of: determining whether a power control level set in the terminal is reached or not when controlling the terminal power; if yes, then adjusting a power of the power control level based on a calibration parameter configured in the terminal within a rated output power range corresponding to the power control level; wherein the calibration parameter is 1 dBm; controlling an output power of the terminal according to the adjusted power. The present invention can further perform an accurate terminal power control for reducing power consumption, conserving resources, and increasing system capacity based on a compatibility with conventional power control.
    Type: Grant
    Filed: October 9, 2011
    Date of Patent: November 17, 2015
    Assignee: HUIZHOU TCL MOBILE COMMUNICATIONS CO., LTD.
    Inventors: Jian Bai, Yufei Tang
  • Patent number: 9137758
    Abstract: A process for controlling the power transmission in the uplink of the User Equipment communicating with a Base Station in a GSM wireless communication system, said process including the steps of: initializing an audio/speech/data transmission channel; monitoring the power control commands generated by said Base station, said command determining a power transmission strength to be used by the UE, said power transmission strength being within a power transmission window; determining for each block to be transmitted whether it includes a control channel or a traffic/idle channel; applying, in response to said determination, a first power transmission level in case of a control block or a second power transmission level in case of a traffic/idle block, both power transmission levels being included within said range transmission window and the first power transmission level being higher for FACCH blocks than the second power transmission level used for traffic data; and transmitting said block and repeating the
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: September 15, 2015
    Assignee: ST-ERICSSON SA
    Inventors: Filipe Teixeira, Laurent De Luca, Anne Gourden
  • Publication number: 20150147977
    Abstract: The present invention relates to a method for compensating a power amplification unit of a wireless RF module that includes a baseband unit, a RF transceiver unit, a power amplification unit and a control unit. The baseband unit is connected to the power amplification unit through the control unit and the RF transceiver unit. Based on the characteristic of the power amplification unit, the baseband unit provides a control signal to regulate the output signal characteristic of the power amplification unit, or provides a RF transceiver unit control signal to regulate the characteristics of the RF signal being transmitted by the RF transceiver unit to the power amplification unit, or to regulate the characteristics of the baseband signal being transmitted to the RF transceiver unit, enabling the characteristics of the output signal of the power amplification unit to meet the specifications of the related system.
    Type: Application
    Filed: June 13, 2014
    Publication date: May 28, 2015
    Inventors: CHIEN-KUANG LEE, HENG-CHIH LIN
  • Patent number: 9042832
    Abstract: The present invention relates to the communication field and describes a communication method and a mobile communication terminal. The communication method and the mobile communication terminal according to the present invention add new capabilities to mobile communication terminals, including cell phones, such that they can choose from a plurality of radio frequency parameter sets for communications. The present invention enables cell phones to store a plurality of radio frequency parameter sets, and necessary changes to RF parameters can be assessed according to different user demands or external application environments such that the cell phone software can switch to upload the most appropriate RF parameters. Consequently, an antenna can obtain optimal parameters such that a cell phone can obtain optimal radiation properties without the need to design a new antenna and can meet HAC requirements by operators.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: May 26, 2015
    Assignee: HUIZHOU TCL MOBILE COMMUNICATION CO., LTD
    Inventor: Xianjin Gu
  • Patent number: 9041661
    Abstract: A cover configured to overlie a touch screen of an electronic device the cover including an output portion configured to enable content presented on the touch screen to be visible to a user through the cover; and the cover including a plurality of distinct input portions each sharing a physical characteristic that demarcates each of the plurality of distinct input portions as an input portion, wherein each of the plurality of distinct input portions is configured to enable one of a plurality of touch sensitive areas of the touch screen to be actuated.
    Type: Grant
    Filed: August 13, 2010
    Date of Patent: May 26, 2015
    Assignee: Nokia Corporation
    Inventor: James Edward Renwick
  • Publication number: 20150119115
    Abstract: A device or system for transmission and reception for voice or data communication applications. The device or system is capable of duplex operation and adapted to operate in an environment using a plurality of frequency bands. The present disclosure also relates to a communication means including a transmitter and receiver arrangement and to antennas.
    Type: Application
    Filed: October 29, 2014
    Publication date: April 30, 2015
    Inventors: Oluf Bagger, Bernd Adler, Mikael Bergholz Knudsen, Michael Wilhelm
  • Publication number: 20150072740
    Abstract: Mobile phone handsets include a CMOS front end configured for operating across multiple transmit and receive frequencies. The front end typically includes multiple receivers, each covering a different band allocated for cellular service, and requires large, expensive and power-intensive A/D converters and DSPs. Front-end circuits disclosed herein operate with a broadband software-defined radio (SDR), and include a receive Low Noise Amplifier (LNA), transmit Power Amplifier (PA), and an antenna matching network. The front-end provides broadband operation using relatively low power, and minimizes noise in the received signal.
    Type: Application
    Filed: March 13, 2013
    Publication date: March 12, 2015
    Inventor: Dev V. Gupta
  • Patent number: 8977314
    Abstract: One embodiment of the present invention provides an automatic gain control (AGC) module for a wireless communication system that includes a plurality of amplifiers. The AGC module includes a receiving mechanism configured to receive an input that indicates a total amount of gain adjustment; a collecting mechanism configured to collect a number of parameters associated with the amplifiers; a determining mechanism configured to determine a desired performance requirement; a gain-control engine configured to generate a gain profile for the amplifiers based on the collected parameters, the total amount of gain, and the desired performance requirement; and an output mechanism configured to output a plurality of control signals based on the generated gain profile, wherein a respective control signal independently controls gain of a corresponding amplifier, thereby enabling the wireless communication system to achieve the total amount of gain adjustment while meeting the desired performance requirement.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 10, 2015
    Assignee: Aviacomm Inc.
    Inventors: Tao Li, Shih Hsiung Mo, Hans Wang, Binglei Zhang
  • Publication number: 20150043620
    Abstract: A mobile communication terminal is provided, which comprises: a first antenna, configured to receive a high-band radio frequency (RF) signal from the outside; a wireless transceiver, configured to acquire the high-band RF signal from the first antenna and generate a first base-band signal; a base-band processor, configured to acquire the first base-band signal from the wireless transceiver and modulate the first base-band signal, and further generate a second base-band signal and a third base-band signal; the wireless transceiver being further configured to convert the second base-band signal into a to-be-transmitted high-band RF signal and convert the third base-band signal into a to-be-transmitted low-band RF signal; a second antenna, configured to acquire and transmit the to-be-transmitted high-band RF signal and the to-be-transmitted low-band RF signal; wherein the second antenna is further configured to receive a low-band RF signal from the outside.
    Type: Application
    Filed: March 6, 2013
    Publication date: February 12, 2015
    Applicant: HUIZHOU TCL MOBILE COMMUNICATION CO., LTD
    Inventors: Jian Bai, Lian Zhang, Shengyin Xie, Xin Jin
  • Patent number: 8948807
    Abstract: A system and method are provided for boosting power for a communications link between a base station and a user device, or user equipment, over a communications link channel in a cellular communications network. In one embodiment, the base station determines whether a communications link for a user device located within a sector of a cell served by the base station needs a power boost. If a power boost is needed, the base station provides a power boost for the communications link for the user device and, for each of one or more neighboring sectors that neighbor the sector in which the user device is located, coordinates the power boost in both frequency and time with a power backoff for a downlink to another user device located in a cell center area of the neighboring sector.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 3, 2015
    Assignee: BlackBerry Limited
    Inventors: Chu-Rui Chang, Jacques Fluet
  • Patent number: 8929563
    Abstract: The transmitter of a wireless power transmission audio system includes: a transmission signal generating section for generating a transmission signal comprised of an RF signal; a first resonant circuit which receives and sends out the transmission signal; a detecting section for sensing a variation in the transmission signal; and a transmission signal adjusting section. The loudspeaker of the system includes: a second resonant circuit for receiving the transmission signal by producing a magnetic field resonant coupling phenomenon; and an audio output section for reproducing the audio signal. At least one of the transmitter and the loudspeaker includes an impedance adjusting section which changes an impedance value on the transmission line of the transmission signal. When the impedance adjusting section changes the impedance value, the transmission signal adjusting section changes the signal waveform of the transmission signal.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: January 6, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Keisuke Kinoshita, Junichi Kawamura, Shutai Okamura
  • Publication number: 20140349716
    Abstract: Disclosed herein is a passive, voltage mode transmitter assembly and method of operation. The passive, voltage mode transmitter assembly comprises a baseband filter configured to filter a source baseband signal, a harmonics filter, connected to the baseband filter, configured to remove harmonics from the filtered, source baseband signal, a passive, voltage mode mixer, connected to the harmonics filter, configured to up-convert an output of the harmonics filter to a radio signal, and a power amplifier, connected to the passive, voltage mode mixer, configured to amplify the radio signal.
    Type: Application
    Filed: March 18, 2014
    Publication date: November 27, 2014
    Applicant: ST-Ericsson SA
    Inventor: Andreas AXHOLT
  • Publication number: 20140349712
    Abstract: A communication device and base station configured to perform random access procedures utilizing, for example, Long-term Evolution (LTE). For example, the random access procedures can be performed for emergency calls. The base station can be configured to allocate one or more preambles to a group of preambles that are designated for emergency calls. The communication device can be configured to transmit random access preambles at a maximum transmission power and ramp down the transmission power for subsequent transmissions. The communication device can be configured to initiate a second random access procedure and determine whether to continue with the second random access procedure or the first random access procedure while aborting the other.
    Type: Application
    Filed: May 21, 2014
    Publication date: November 27, 2014
    Applicant: Broadcom Corporation
    Inventor: Hersh Vardhan SHUKLA
  • Patent number: 8843180
    Abstract: Embodiments for at methods, apparatus and systems for operating a voltage regulator are disclosed. One apparatus includes a switching voltage regulator, wherein the switching voltage regulator includes a series switch element, a shunt switch element, a switching controller and a switched output filter. The switching controller is configured to generate a switching voltage through controlled closing and opening of the series switch element and the shunt switch element. The switched output filter filters the switching voltage and generates a regulated output voltage, wherein the switched output filter includes a plurality of capacitors that are selectively included within the switched output filter.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: September 23, 2014
    Assignee: R2 Semiconductor, Inc.
    Inventors: James E. C. Brown, Daniel Dobkin, Pablo Moreno Galbis, Cory Severson, Lawrence M. Burns
  • Publication number: 20140256378
    Abstract: A method of controlling a mobile communication terminal including a first antenna and a second antenna is provided. The method includes receiving transmission data to be transmitted, applying first power smaller than a first threshold value to the first antenna, applying second power smaller than the first threshold value to the second antenna, and cooperatively transmitting the transmission data based on the first power and the second power, respectively, by the first antenna and the second antenna, wherein a sum of the first power and the second power is larger than a second threshold value.
    Type: Application
    Filed: March 4, 2014
    Publication date: September 11, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Soo-Pyoung PARK, Yong-Yi KIM, Jea-Dong JANG
  • Patent number: 8831670
    Abstract: A method and system are provided for boosting power for a communications link between a base station and a user device, or user equipment, in a cellular communications network. In one embodiment, the communications link is a downlink between the base station and the user device established via a downlink channel having a full channel bandwidth including a number of sub-carrier frequencies. The base station determines whether a power boost is needed for a downlink to the user device. If so, the base station uses a subset of the sub-carrier frequencies from the full channel bandwidth as a reduced bandwidth channel, or sub-channel, for the downlink to the user device such that signal power is concentrated on the sub-carrier frequencies of the reduced channel bandwidth rather than spread across the sub-carrier frequencies of the full channel bandwidth. As a result, a power boost for the downlink is provided.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: September 9, 2014
    Assignee: BlackBerry Limited
    Inventors: Chu-Rui Chang, Jacques Fluet
  • Patent number: 8824991
    Abstract: A multi-mode power amplifier includes a high-power mode amplifier circuit, a mid-power mode amplifier circuit, and a low power amplifier circuit, where the low-power mode amplifier circuit comprises a plurality of independently selectable power cell/amplifier branches. The multi-mode power amplifiers selectively enable or disable amplifier branches to provide multiple levels of amplification. Selectively enabling certain of a plurality of split collector amplifier branches provides multiple low power and ultra-low power amplifier modes without the impedance mismatch or board layout problems associated with an RF switch.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: September 2, 2014
    Assignee: Skyworks Solutions, Inc.
    Inventors: Shiaw Wen Chang, Xuejun Chen, Guohao Zhang, Jing Sun, Piyou Zhang, Jinim Won
  • Patent number: 8825100
    Abstract: A method and system are provided for boosting power for a communications link between a base station and a user device, or user equipment, in a cellular communications network. In one embodiment, the communications link is a downlink between the base station and the user device established via a downlink channel having a full channel bandwidth including a number of sub-carrier frequencies. The base station determines whether a power boost is needed for a downlink to the user device. If so, the base station uses a subset of the sub-carrier frequencies from the full channel bandwidth as a reduced bandwidth channel, or sub-channel, for the downlink to the user device such that signal power is concentrated on the sub-carrier frequencies of the reduced channel bandwidth rather than spread across the sub-carrier frequencies of the full channel bandwidth. As a result, a power boost for the downlink is provided.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: September 2, 2014
    Assignee: BlackBerry Limited
    Inventors: Chu-Rui Chang, Jacques Fluet
  • Publication number: 20140243049
    Abstract: A method to control adjustable power levels uses a network of attenuators that includes a fixed attenuation and a variable attenuation. The method adjusts the variable attenuation to approach the fixed attenuation, provides gain to an attenuated signal in an amount proximate to the fixed attenuation to generate a compensated signal, and compares power levels of a non-attenuated signal and the compensated signal to generate a first error signal. The method introduces the fixed attenuation and correspondingly reduces the variable attenuation to maintain a combined attenuation. The combined attenuation generates a modified compensated signal. The method measures a difference between the first power levels of the non-attenuated signal and the modified compensated signal to generate a second error signal, and generates a control signal as function of the first and second error signals to adjust the variable attenuation to reduce an attenuation mismatch introduced between the fixed and variable attenuations.
    Type: Application
    Filed: May 6, 2014
    Publication date: August 28, 2014
    Applicant: Skyworks Solutions, Inc.
    Inventors: Dmitriy Rozenblit, Darioush Agahi
  • Patent number: 8816920
    Abstract: A mobile electronic device comprises an RFID antenna section that sends and receives signals on a first useful frequency band, a main antenna section that sends and receives signals on a second useful frequency band, which is a higher frequency band than the first useful frequency band, an adjustment section that adjusts a resonance frequency of the RFID antenna section, and a control section that identifies a reactance value of the RFID antenna section based on the receiving sensitivity with respect to signals on the first useful frequency band and adjusts the resonance frequency of the RFID antenna section based on the identified reactance value by an adjustment section such that a high-order resonance frequency of the RFID antenna section is spaced apart from the second useful frequency band.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: August 26, 2014
    Assignee: KYOCERA Corporation
    Inventors: Yasuhiro Abe, Hiroshi Sakai
  • Publication number: 20140199950
    Abstract: A passively re-radiating cell phone sleeve assembly capable of receiving a nested cell phone provides signal boosting capabilities and provides a radar enablement. Signal boosting is enabled by use of an additional antenna, a pass-through repeater, dual antenna isolation capability and other features.
    Type: Application
    Filed: March 17, 2014
    Publication date: July 17, 2014
    Applicant: MoJoose, Inc.
    Inventors: Daniel R. Ash, JR., Daniel R. Ash, SR., Joseph Storniolo, Jeremy Monroe
  • Patent number: 8781536
    Abstract: A method for controlling output signal power in a communication terminal includes accepting, from first and second measurement points along a transmission chain in a transmitter of the terminal, respective first and second signal representations of a communication signal to be transmitted by the communication terminal. A cross-correlation is computed between the first and second signal representations accepted from the first and second measurement points. An actual gain between the first and second measurement points is computed using the cross-correlation. An output power of the communication signal is adjusted by setting a gain of the transmitter responsively to the actual gain.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: July 15, 2014
    Assignee: Marvell International Ltd
    Inventors: Alex Zaslavsky, Rony Ashkenazi
  • Patent number: 8774708
    Abstract: Methods and apparatus for estimating a loop delay value (Ndelay) in an interference cancellation repeater are presented. For example, a method may include setting a repeater gain to an initial gain value, setting a delay parameter to an initial time value, and measuring a loop gain associated with the delay parameter and the repeater gain by detecting a feedback signal with an echo canceller disabled. The method may further include determining whether the measured loop gain is larger than a previously measured loop gain, and if so, designating the delay parameter as the loop delay value (Ndelay); and decrementing the delay parameter when the measured loop gain is not larger than the previously measured loop gain, and when the delay parameter is not at a final time value. The method may iterate until the delay parameter is less than or equal to the final time value.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: July 8, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Michael Mao Wang, Gwendolyn Denise Barriac, Dhananjay Ashok Gore
  • Patent number: 8761092
    Abstract: A collaborative MIMO method using a sounding channel in a multi-cell environment is disclosed. The method includes acquiring, by a first base station providing a service for a first cell, first CSI of a first downlink channel between the first base station and a mobile station, transmitting, to a second base station, a signal including information requesting that the second base station providing a service for a second cell acquire second CSI of a second downlink channel between the second base station and the mobile station, and acquiring, by the second base station, the second CSI. The mobile station is served by the first base station.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: June 24, 2014
    Assignee: LG Electronics
    Inventors: Jae Wan Kim, Wook Bong Lee, Su Nam Kim, Dong Guk Lim, Bin Chul Ihm
  • Publication number: 20140162732
    Abstract: A mobile device comprising an antenna, a receiver coupled to the antenna, and a transmitter coupled to the antenna, wherein the receiver, the transmitter, or both comprise a low noise amplifier comprising an adjustable gain and a variable impedance controller, and wherein the low noise amplifier is configured to sink current and to adjust a shunt resistance substantially simultaneously. Included is a method comprising receiving an electrical signal, substantially simultaneously adjusting an input impedance and a gain factor, amplifying the electrical signal, thereby producing an amplified signal, and outputting the amplified signal.
    Type: Application
    Filed: December 7, 2012
    Publication date: June 12, 2014
    Applicant: Futurewei Technologies, Inc.
    Inventors: Ping Yin, Robert Grant Irvine, Chengfang Liao, Zhihang Zhang
  • Publication number: 20140141843
    Abstract: A portable accessory for preventing death grip of a hand-held apparatus and improving radio wave transmission and reception of the hand-held apparatus. The portable accessory includes an inductive signal amplifying circuit including: a radio transmission/radio unit that transmits or receives radio waves; a capacitive coupled unit that is capacitively coupled with an antenna mounted in the hand-held apparatus; and an impedance matching unit that connects the radio wave transmission/reception unit and the capacitive coupled unit and transmits radio waves.
    Type: Application
    Filed: January 27, 2014
    Publication date: May 22, 2014
    Applicant: Zalman Tech Co., Ltd.
    Inventor: Byung-Won KONG
  • Patent number: 8725218
    Abstract: Embodiments for at methods, apparatus and systems for operating a voltage regulator are disclosed. One method includes generating, by a switching controller, a switching voltage through controlled closing and opening of a series switch element and a shunt switch element. Further, the method includes generating, by a switchable output filter, a regulated output voltage by filtering the switching voltage, wherein the switchable output filter comprises a plurality of capacitors that are selectively included within the switchable output filter.
    Type: Grant
    Filed: February 18, 2012
    Date of Patent: May 13, 2014
    Assignee: R2 Semiconductor, Inc.
    Inventors: James E. C. Brown, Daniel Dobkin, Pablo Moreno Galbis, Cory Severson, Lawrence M. Burns
  • Patent number: 8711971
    Abstract: An exemplary MIMO transceiver includes a first transmitting channel and a second transmitting channel. The first transmitting channel includes a first power amplifier and a first transmission line which are connected together in series. The second transmitting channel includes a second power amplifier. A common terminal of a first single pole double throw (SPDT) switch is connected to the second power amplifier. A first terminal of the first SPDT switch is connected to the first power amplifier through a second transmission line. A common terminal of a second SPDT switch is connected to the second power amplifier. A first terminal of second SPDT switch is connected to the first power amplifier through a third transmission line. A second terminal of the second SPDT switch is connected to a second antenna. The first power amplifier, the second transmission line, and the third transmission line cooperatively act as a balance power amplifier.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: April 29, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Liang-Hsien Hung
  • Patent number: 8712481
    Abstract: To provide for a movable electronic device a power receiving device that when charging a battery, simplifies charging of the battery from a power feeder, which is a power supply means, and does not have faults due to an external factor relating to a relay terminal, or damage of the relay terminal, that are caused by directly connecting the battery and the power feeder, and further, to provide an electronic device including the power receiving device. An antenna circuit and a booster antenna for supplying electric power are provided in a movable electronic device. The antenna circuit receives a radio signal such as an electromagnetic wave via the booster antenna, and electric power that is obtained through the receiving of the radio signal is supplied to the battery through a signal processing circuit.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: April 29, 2014
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yutaka Shionoiri, Jun Koyama, Yoshiyuki Kurokawa, Shunpei Yamazaki, Takayuki Ikeda, Takeshi Osada, Tomoaki Atsumi, Masato Ishii
  • Publication number: 20140100002
    Abstract: In an embodiment, a power amplifier (PA) includes a signal processing path including gain stages to receive a radio frequency (RF) signal and to output an amplified RF signal, sensors coupled to the signal processing path each to sense a characteristic of operation of the PA, and a microcontroller configured to execute instructions and to receive the operation characteristic(s) and to control one or more parameters of the signal processing path responsive this operation characteristic.
    Type: Application
    Filed: October 9, 2012
    Publication date: April 10, 2014
    Applicant: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Timothy Dupuis, Eric Kimball, David Bockelman, Vishnu Srinivasan, Justin Dougherty
  • Patent number: 8694061
    Abstract: The invention relates to a method and an arrangement for reducing power consumption of a receiver in a mobile communication network comprising a sender transmitting packet data on a downlink channel to one or more receivers over a radio interface. Inactive time instants and listening time instants are defined according to provided rules. The receiver is arranged to listen for information from the sender during the listening time instants and to sleep during the inactive time instants. Thus, less power will be consumed during the inactive time instants.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: April 8, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventors: Pål Frenger, Per Magnusson, Stefan Parkvall, Niclas Wiberg
  • Patent number: 8687676
    Abstract: An efficient way to store backoff and crestcomp parameters while providing quick access to the backoff and crestcomp parameters associated with specific transmission configurations is described herein. A long-term memory stores amplifier parameters for a plurality of different transmission configurations. A selection element selects from the long-term memory a graph of the amplifier parameters corresponding to a selected subset of the transmission configurations. The selected graph relates each of a plurality of enhanced data channel gain ratios to a corresponding amplifier parameter. The selection element transfers the selected graph from the long-term memory to a fast memory proximate a DSP. Further, the selection element reselects and transfers new graphs into the fast memory as needed.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: April 1, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Torgny Palenius
  • Publication number: 20140087664
    Abstract: A method of increasing power amplifier linearity to facilitate in-device coexistence between wireless communication technologies is provided. The method can include determining a scheduled time period during which data is received by a device via a first wireless communication technology. The method can further include adjusting an operational parameter of a power amplifier applied to a transmission from the device via a second wireless communication technology to increase a linearity of the power amplifier during the scheduled time period.
    Type: Application
    Filed: September 26, 2012
    Publication date: March 27, 2014
    Applicant: APPLE INC.
    Inventors: Vinay R. MAJJIGI, William S. BURCHILL, Xiaowen WANG
  • Publication number: 20140080549
    Abstract: One embodiment of the present invention provides an automatic gain control (AGC) module for a wireless communication system that includes a plurality of amplifiers. The AGC module includes a receiving mechanism configured to receive an input that indicates a total amount of gain adjustment; a collecting mechanism configured to collect a number of parameters associated with the amplifiers; a determining mechanism configured to determine a desired performance requirement; a gain-control engine configured to generate a gain profile for the amplifiers based on the collected parameters, the total amount of gain, and the desired performance requirement; and an output mechanism configured to output a plurality of control signals based on the generated gain profile, wherein a respective control signal independently controls gain of a corresponding amplifier, thereby enabling the wireless communication system to achieve the total amount of gain adjustment while meeting the desired performance requirement.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 20, 2014
    Applicant: AVIACOMM INC.
    Inventors: Tao Li, Shih Hsiung Mo, Hans Wang, Binglei Zhang
  • Patent number: 8666337
    Abstract: A system for power amplifier control saturation detection and correction includes a comparator configured to receive a power control signal and a detected power signal and generate a regulated voltage, a power amplifier configured to receive the regulated voltage and develop an output power, a power detector configured to sense the output power and develop the detected power signal, a saturation detector configured to receive the regulated voltage and a system voltage and determine whether the power amplifier is operating in a saturation mode during a transmit burst, and a current generator configured to reduce the power control signal when the power control signal exceeds a predetermined value and after expiration of a predetermined period of time, preventing the power control signal from exceeding the detected power signal.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: March 4, 2014
    Assignee: Skyworks Solutions, Inc.
    Inventors: David S. Ripley, Paul R. Andrys, Matthew L. Banowetz