Including Tuning Patents (Class 455/120)
  • Patent number: 11770851
    Abstract: Wireless communications systems and methods related to communicating in a frequency band across multiple adjacent carriers are provided. A first wireless communication device performs first sensing in a first sensing time designated for a first channel, the first channel being an operational channel of the first wireless communication device. The first wireless communication device performs second sensing in a second sensing time designated for a second channel adjacent to the first channel, the second channel being an operational channel of a second wireless communication device. The first wireless communication device communicates with a third wireless communication device in the first channel a communication signal in the first channel based on the first sensing and the second sensing.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: September 26, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Xiaoxia Zhang, Tamer Kadous, Taesang Yoo, Yisheng Xue, Arumugam Chendamarai Kannan, Jing Sun, Aleksandar Damnjanovic
  • Patent number: 11750278
    Abstract: A terminal computer includes a processor and a memory. The memory stores instructions executable by the processor to determine an initial power back-off value for establishing a communication link to a satellite as a function of a distance of a location of a satellite terminal antenna within a satellite beam footprint from a specified reference point within the satellite beam footprint, and to initiate communication with the satellite based on the determined initial power back-off value.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: September 5, 2023
    Assignee: Hughes Network Systems, LLC
    Inventor: Murali Regunathan
  • Patent number: 11563812
    Abstract: Systems, devices, and methods are provided for the management of multiple sensor control devices and/or multiple reader devices in an in vivo analyte monitoring environment, and also for resolving conflicts when merging data collected by different reader devices.
    Type: Grant
    Filed: May 5, 2022
    Date of Patent: January 24, 2023
    Assignee: ABBOTT DIABETES CARE INC.
    Inventors: Mark Sloan, Nathan C. Crouther, Glenn Berman, Gil Porat, Michael R. Love
  • Patent number: 11522498
    Abstract: Aspects of the subject disclosure may include a Doherty amplifier that includes a carrier amplifier having an output terminal, an output network coupled to the output terminal, and a peaking amplifier, wherein the output network comprises a non-linear reactance component, and wherein the non-linear reactance component changes an effective impedance of a load presented to the carrier amplifier when the peaking amplifier is off. Other embodiments are disclosed.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: December 6, 2022
    Assignee: NXP USA, Inc.
    Inventors: Joseph Staudinger, Matthew Russell Greene, Edward Provo Wallis Horne, Johannes Lambertus Holt, Peter Zahariev Rashev
  • Patent number: 11121683
    Abstract: A radio-frequency circuit includes a power amplifier circuit, a first switch, a duplexer, a second switch, a capacitor element, and a controller. The first switch includes a first common terminal and first selection terminals. An output signal of the power amplifier circuit is applied to the first common terminal. The duplexer is a filter connected at one terminal to the first selection terminal. The second switch includes a second common terminal and plural second selection terminals. The plural second selection terminals includes the second selection terminal connected to the other terminal of the duplexer. The capacitor element is built in the first switch. The controller controls the gain of the power amplifier circuit in accordance with a monitor signal obtained via the capacitor element so as to regulate the maximum output level of the power amplifier circuit.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: September 14, 2021
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Takahisa Toyomura
  • Patent number: 11082079
    Abstract: Exemplary embodiments dynamically select the LO frequency and mixer mode (i.e., low-side LO injection or high-side LO injection) for upconversion based on the desired RF output frequency in order to mitigate the effects of spurious and LO leakage signals that could violate radiation emission limits, e.g., in the case where the IF signal frequency is smaller than the RF operating band. By dynamically switching the LO frequency and mixer mode as a function of the requested operating RF channel, low-level emissions and spurious signal compliance with restricted bands can be achieved.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: August 3, 2021
    Assignee: ANOKIWAVE, INC.
    Inventors: Robert Ian Gresham, Shmuel Ravid, Kristian N. Madsen, Tissana T. Kijsanayotin
  • Patent number: 11039767
    Abstract: Methods and apparatus for providing data processing and control for use in a medical communication system are provided.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: June 22, 2021
    Assignee: ABBOTT DIABETES CARE INC.
    Inventor: Gary A. Hayter
  • Patent number: 10110261
    Abstract: A method of adapting an antenna to a transceiver system having a receiver subsystem and a transmitter subsystem comprises using an automatic tuning system to tune the antenna with respect to the receiver subsystem. The tuning results in an optimal receive signal at the receiver subsystem in response to RF energy radiated to the antenna. The tuning system may include a tuning detection element for radiating RF energy to the antenna, and a tuning element for tuning the antenna. After tuning the antenna, the method further comprises tuning a tunable matching network, coupled between an output of an RF power device of the transmitter subsystem and an input of the antenna, to facilitate an optimal power transfer amount from the RF power device to the antenna while the RF power device operates according to certain desired parameters. The desired parameters may include output power and efficiency.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: October 23, 2018
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Douglas W. White, Seth M. Davis
  • Patent number: 10090593
    Abstract: A radio frequency device with mechanisms for adjustment of the impedances and frequencies of its antennas comprises a first circuit board, a radio frequency module and a second circuit board. The radio frequency module is disposed on the first circuit board that is disposed on the second circuit board. The radio frequency module comprises an antenna unit, a first frequency tuning element and a radio frequency circuitry. The antenna unit is disposed within a clearance area of the first circuit board, and connected to the radio frequency circuitry via a feeding circuit. The second circuit board comprises a second frequency tuning element that is electrically connected to the antenna unit via a ground circuit and the first frequency tuning element on the first circuit board. Thus, the resonance frequency of the antenna unit can be adjusted according to the first and the second frequency tuning element.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: October 2, 2018
    Assignee: Unictron Technologies Corporation
    Inventors: Chih-Shen Chou, Tsung-Shou Yeh, Hsiang-Cheng Yang, Chih-Chi Yen, Yih-Wei Yang
  • Patent number: 10039052
    Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. In one implementation, an apparatus includes a processing system configured to attempt communication with a first device via a first channel, connect with a second device associated with the first device in response to a determination that communication with the first device was unsuccessful on the first channel, and receive channel information associated with the first device from the second device, wherein the channel information indicates a second channel used by the first device.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: July 31, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Yan Zhou, George Cherian, Simone Merlin
  • Patent number: 10026595
    Abstract: A radio-frequency (RF) generator is provided that includes an exciter, a power amplifier, a filter, a sensor, and a frequency-tuning subsystem.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: July 17, 2018
    Assignee: Advanced Energy Industries, Inc.
    Inventors: Myeong Yeol Choi, Denis Shaw, Mike Mueller, Jeffrey Roberg, Steve Jordan
  • Patent number: 10003415
    Abstract: A system, computer readable medium, and method are provided for calibrating a wireless transmitter. A transceiver that includes a radio frequency transmitter, a measurement receiver, and a local oscillator unit may be calibrated by adjusting the duty cycle of the radio frequency signals generated by the local oscillator unit. The method for calibrating the wireless transmitter includes the steps of collecting measurement data corresponding to a number of pre-defined duty ratio correction factors, calculating estimated optimum duty ratio correction factors based on the measurement data, and determining a final optimum duty ratio correction factor from the estimated optimum duty ratio correction factors. The pre-defined duty ratio correction factors may be selected to simplify the calculations for choosing the final optimum duty ratio correction factor. The wireless transmitter can be calibrated by configuring the local oscillator unit based on the final optimum duty ratio correction factor.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: June 19, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Hong Jiang, Zhihang Zhang, Wael Al-Qaq
  • Patent number: 9979433
    Abstract: This disclosure relates generally to radio frequency (RF) front-end circuitry for routing RF signals to and/or from one or more antennas. Exemplary RF front-end circuitry includes a multiple throw solid-state transistor switch (MTSTS) and a multiple throw microelectromechanical switch (MTMEMS). The MTSTS may be configured to selectively couple a first pole port to any one of a first set of throw ports. The MTMEMS is configured to selectively couple a second pole port to any one of a second set of throw ports. The second pole port of the MTMEMS is coupled to a first throw port in the first set of throw ports of the MTSTS. The MTSTS helps prevent hot switching in the MTMEMS since the first throw port of the MTSTS may be decoupled from the second pole port of the MTMEMS before decoupling the second pole port from a selectively coupled throw port of the MTMEMS.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: May 22, 2018
    Assignee: Qorvo US, Inc.
    Inventors: Nadim Khlat, Jonathan Hale Hammond, Marcus Granger-Jones
  • Patent number: 9935675
    Abstract: This disclosure relates generally to radio frequency (RF) front-end circuitry for routing RF signals to and/or from one or more antennas. Exemplary RF front-end circuitry includes a multiple throw solid-state transistor switch (MTSTS) and a multiple throw microelectromechanical switch (MTMEMS). The MTSTS may be configured to selectively couple a first pole port to any one of a first set of throw ports. The MTMEMS is configured to selectively couple a second pole port to any one of a second set of throw ports. The second pole port of the MTMEMS is coupled to a first throw port in the first set of throw ports of the MTSTS. The MTSTS helps prevent hot switching in the MTMEMS since the first throw port of the MTSTS may be decoupled from the second pole port of the MTMEMS before decoupling the second pole port from a selectively coupled throw port of the MTMEMS.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: April 3, 2018
    Assignee: Qorvo US, Inc.
    Inventors: Nadim Khlat, Jonathan Hale Hammond, Marcus Granger-Jones
  • Patent number: 9882599
    Abstract: This disclosure relates generally to radio frequency (RF) front-end circuitry for routing RF signals to and/or from one or more antennas. Exemplary RF front-end circuitry includes a multiple throw solid-state transistor switch (MTSTS) and a multiple throw microelectromechanical switch (MTMEMS). The MTSTS may be configured to selectively couple a first pole port to any one of a first set of throw ports. The MTMEMS is configured to selectively couple a second pole port to any one of a second set of throw ports. The second pole port of the MTMEMS is coupled to a first throw port in the first set of throw ports of the MTSTS. The MTSTS helps prevent hot switching in the MTMEMS since the first throw port of the MTSTS may be decoupled from the second pole port of the MTMEMS before decoupling the second pole port from a selectively coupled throw port of the MTMEMS.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: January 30, 2018
    Assignee: Qorvo US, Inc.
    Inventors: Nadim Khlat, Jonathan Hale Hammond, Marcus Granger-Jones
  • Patent number: 9831907
    Abstract: This disclosure relates generally to radio frequency (RF) front-end circuitry for routing RF signals to and/or from one or more antennas. Exemplary RF front-end circuitry includes a multiple throw solid-state transistor switch (MTSTS) and a multiple throw microelectromechanical switch (MTMEMS). The MTSTS may be configured to selectively couple a first pole port to any one of a first set of throw ports. The MTMEMS is configured to selectively couple a second pole port to any one of a second set of throw ports. The second pole port of the MTMEMS is coupled to a first throw port in the first set of throw ports of the MTSTS. The MTSTS helps prevent hot switching in the MTMEMS since the first throw port of the MTSTS may be decoupled from the second pole port of the MTMEMS before decoupling the second pole port from a selectively coupled throw port of the MTMEMS.
    Type: Grant
    Filed: August 28, 2013
    Date of Patent: November 28, 2017
    Assignee: Qorvo US, Inc.
    Inventors: Nadim Khlat, Jonathan Hale Hammond, Marcus Granger-Jones
  • Patent number: 9350412
    Abstract: A transceiver comprises a transmit/receive terminal, a receiver input terminal, a scalable impedance network, a plurality of power amplifiers, and a receiver. The scalable impedance network is coupled between the transmit/receive terminal and the receiver input terminal and has a plurality of taps in an order between the transmit/receive terminal and the receiver input terminal, in which an impedance looking into any given tap toward the transmit/receive terminal is smaller than an impedance looking into a subsequent tap toward the transmit/receive terminal, if any, in the order. The plurality of power amplifiers are arranged in an order and have outputs respectively coupled to the plurality of taps of the scalable impedance network. A power of any given power amplifier is higher than a power of a subsequent power amplifier, if any, in the order. The receiver is coupled to the receiver input terminal.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: May 24, 2016
    Assignee: SILICON LABORATORIES INC.
    Inventors: Aslamali A. Rafi, Ravi Kummaraguntla
  • Patent number: 9287624
    Abstract: An antenna circuit is having an impedance circuit which can cancel signal leakage from the input port into the isolation port of a directional coupler. The antenna circuit further comprises a second impedance circuit for optimizing power transfer from the input port to the output port of the directional coupler. Furthermore, the antenna is tunable in order to maximize the reception strength of the antenna. The antenna circuit provides at once the possibility of tuning the antenna strength, optimizing the power transmission and reducing signal jamming by cancelling signal leakage. The antenna finds use as an effective and miniature RFID antenna.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: March 15, 2016
    Assignee: Hong Kong Applied Science and Technology Research Institute Company Limited
    Inventors: Tak Ki Wan, Yan Liu, Song He, Dan Yang, Chi Keung Angus Mak
  • Patent number: 9026068
    Abstract: There is provided a system that includes a tunable amplification module, a coupler, an interface module; a detector that is arranged to output an impedance indicative signal and a power indicative signal; wherein the impedance indicative signal is indicative of an impedance mismatch between an output impedance of the tunable amplification module and an impedance of a radio frequency (RF) antenna as seen by the tunable amplification module, wherein the power indicative signal is indicative of an output power of the tunable amplification module.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: May 5, 2015
    Assignee: DSP Group Ltd.
    Inventors: Lior Blanka, Solon Jose Spiegel
  • Patent number: 9026050
    Abstract: In a communication circuit, an RFIC includes an IO terminal and a control IC includes an IO terminal. A variable capacitance element includes control terminals, a capacitance element with a capacitance value that is determined according to a control voltage, and a resistance voltage divider circuit configured to generate the control voltage by dividing a voltage inputted to the control terminals. One of the RFIC and the control IC supplies control data to the variable capacitance element via a signal line. The variable capacitance element, along with an antenna coil, constitutes an antenna circuit of an LC parallel resonance circuit, and sets a resonant frequency of the antenna circuit to be a predetermined frequency.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: May 5, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoto Ikeda, Nobuo Ikemoto, Naoki Gouchi, Toshiyuki Nakaiso, Katsumi Taniguchi
  • Patent number: 9020446
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a computer-readable storage medium having computer instructions to perform actual measurements of one or more performance parameters of a communication device according to a subset of tuning states of a tunable matching network operable in a communication device, determine estimated measurements of the one or more performance parameters of the communication device for a portion of the tuning states not included in the subset of tuning states according to the actual measurements, identify a data set for each of the one or more performance parameters from at least portions of the tuning states and the actual and estimated measurements, and determine from at least a portion of the date sets one or more tuning states that achieve at least one desirable performance characteristic of the communication device. Additional embodiments are disclosed.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: April 28, 2015
    Assignee: Blackberry Limited
    Inventors: Keith Manssen, Daniel Charles Boire, Matthew Russell Greene
  • Patent number: 8977216
    Abstract: A wireless device is described. The wireless device includes a tunable front end module. The tunable front end module includes a Tx microelectromechanical system bandpass filter. The tunable front end module also includes a first Rx microelectromechanical system bandpass filter. The wireless device also includes a power amplifier. The wireless device further includes a low noise amplifier.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: March 10, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Haim M. Weissman, Avigdor Brillant, David Pezo
  • Patent number: 8976302
    Abstract: A radio frequency front end for a television band receiver and spectrum sensor includes a low noise amplifier that amplifies a received signal output of a radio frequency antenna connected to the radio frequency front end, a pin diode attenuator circuit that selectively attenuates an output of the low noise amplifier, and a buffer amplifier that amplifies an output of the pin diode attenuator.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: March 10, 2015
    Assignee: Wi-LAN, Inc.
    Inventors: Neil Birkett, Vajira Samarasooriya, Jung Yee
  • Patent number: 8934856
    Abstract: A system and method provide for calibrating the frequency response of an electronic filter. The system and method include a radio transmitter with both in-phase and quadrature baseband paths. Each baseband path includes a numerically controlled oscillator (“NCO”), a digital signal path, a digital-to-analog converter (“DAC”), and an analog filter. A low frequency tone is applied from the NCO from one of the baseband path, while a high frequency tone is applied from the NCO in the other baseband path. An analog peak detector at output determines which analog filter has the largest amplitude at the output. The peak detector offset between the two analog filters is offset by stimulating the in-phase and quadrature baseband paths with the respective NCOs to find an amplitude difference between the output signals from the NCOs that makes the output of the analog filters the same.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: January 13, 2015
    Assignee: Analog Devices, Inc.
    Inventors: David J. McLaurin, Christopher Mayer
  • Patent number: 8923770
    Abstract: A wireless communication system that concurrently communicates information in multiple regulatory domains to facilitate audio/video media streaming and other high bandwidth operations. One domain may be licensed and the other may be unlicensed. Transmission in the licensed domain may occur in white space in the domain, and the amount of information transmitted in that domain may be limited by regulations. The amount of information conveyed in the licensed domain may also depend on channel conditions in either or both of the domains. As a result, the relative amount of information transmitted in each domain may vary dynamically. The system includes a transmitter that dynamically determines weighting coefficients applied to each of a plurality of channels to set power levels in both domains to achieve a desired metric for the overall communication. A corresponding receiver assembles the substreams into a stream that can then be displayed or otherwise processed.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: December 30, 2014
    Assignee: Microsoft Corporation
    Inventors: Amer A. Hassan, Danny Allen Reed, Trenholme J. Griffin
  • Patent number: 8902015
    Abstract: A radio frequency power load and associated method. A radio frequency power load apparatus may include a container with an ionized fluid therein. The apparatus may include one conductor immersed in a fluid and another conductor electrically connected to the container. A radio frequency transmission system may include a radio frequency transmitter, a radio frequency amplifier connected to the transmitter and a radio frequency power load apparatus connected to the amplifier. The apparatus may include a fluid having an ion source therein, one conductor immersed in a fluid, and another conductor electrically connected to the container. A method of dissipating power generated by a radio frequency transmission system may include constructing a waveguide with ionized fluid in a container and connecting the waveguide to an amplifier of the transmission system.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: December 2, 2014
    Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Karthik Srinivasan, V, Todd M. Freestone, William Herbert Sims, III
  • Patent number: 8903002
    Abstract: A computational processor uses a binary signal, being a set of 1- or 0-valued elements of a same number as a number of elements in an input signal, to generate computational data whose elements are exclusive OR values between each element of the input signal and a corresponding element in the binary signal at a same position. The modulator 13 modulates the input signal and the computational data according to a primary modulation scheme, and generates primary-modulated signals. An IFFT calculator applies an inverse fast Fourier transformation to the primary-modulated signals to generate inverse transformation data. A transmitter generates a baseband signal based on generated inverse transformation data whose peak-to-average power ratio matches a standard, and generates and transmits a transmission signal from the baseband signal and data specifying computations conducted to generate the inverse transformation data that matches the standard.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: December 2, 2014
    Assignee: Icom Incorporated
    Inventor: Nobuyoshi Nishikawa
  • Patent number: 8868014
    Abstract: An antenna is provided having a good matching characteristics when immersed in a fluid such as saline water, oil, or other liquids (“the phantom liquid”). In some embodiments, the antenna provides a tight capacitive coupling with the phantom liquid through the use of a higher permeability cover and absence of a gap between the cover and the antenna body. One embodiment employs a tunably capacitively loaded inverted “F” antenna structure. Additional embodiments of the invention provide an antenna tuning system that saves power by utilizing very low duty cycle periodical refreshing charge at a tuning varactor diode coupled to the antenna.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: October 21, 2014
    Assignee: Olympus Corporation
    Inventor: Ivan Krivokapic
  • Patent number: 8855579
    Abstract: A method may include measuring a frequency difference between an actual frequency and an expected frequency associated with a frequency control calibration signal value for each of a plurality of frequency control calibration signal values during a calibration phase. The method may additionally include generating integral non-linearity compensation values based on the frequency differences measured The method may further include generating the applied frequency control signal based on a frequency control calibration signal value received by the digital-to-analog converter during the calibration phase. The method may also include generating a compensated frequency control signal value based on a frequency control signal value received by the integral non-linearity compensation module and an integral non-linearity compensation value associated with the frequency control signal value during an operation phase of the wireless communication element.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: October 7, 2014
    Assignee: Intel IP Corporation
    Inventors: David Harnishfeger, Kristopher Kaufman
  • Patent number: 8855708
    Abstract: A method is provided for operating a mobile telecommunications device including a cellular communication device operable to communicate with a cellular telecommunications network base station and a white space communication device operable to communicate with a non-cellular white space access point. The method includes determining the availability of white space and selectively enabling white space communication in dependence upon the determination. Controlling transmission of user data in the white space may be by exchanging control data with the cellular telecommunications network base station such that the control data controls the transmission of user data in the white space. White space communication need not be implemented in uplink and may be used in the downlink alone.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: October 7, 2014
    Assignee: Vodafone IP Licensing Limited
    Inventors: Prakash Bhat, Ralf Irmer, Benedikt Noethen
  • Patent number: 8837635
    Abstract: Embodiments provide systems and methods to dynamically control a radio frequency (RF) transmitter based on monitored error vector magnitude (EVM) performance. Embodiments are enabled by a feedback path that allows estimating the EVM at the output of the transmitter and controlling the transmitter, including the power amplifier (PA), accordingly. As such, the transmitter (and the PA) can be operated as close as possible to the ideal operating point that meets, based on actual conditions, a specified EVM performance and desired output power. By doing so, the overall power consumption of the transmitter is reduced.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: September 16, 2014
    Assignee: Broadcom Corporation
    Inventors: Robert Lorenz, Djordje Tujkovic
  • Patent number: 8787845
    Abstract: A system that incorporates teachings of the present disclosure may include, for example, a computer-readable storage medium having computer instructions to perform actual measurements of one or more performance parameters of a communication device according to a subset of tuning states of a tunable matching network operable in a communication device, determine estimated measurements of the one or more performance parameters of the communication device for a portion of the tuning states not included in the subset of tuning states according to the actual measurements, identify a data set for each of the one or more performance parameters from at least portions of the tuning states and the actual and estimated measurements, and determine from at least a portion of the date sets one or more tuning states that achieve at least one desirable performance characteristic of the communication device. Additional embodiments are disclosed.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: July 22, 2014
    Assignee: Blackberry Limited
    Inventors: Keith Ronald Manssen, Daniel Charles Boire, Matthew Russell Greene
  • Patent number: 8787907
    Abstract: A method of wireless communication includes determining at least one neighboring apparatus from which to obtain information, obtaining information related to a plurality of channels from the at least one neighboring apparatus, selecting a channel from the plurality of channels based on the obtained information, and transmitting on the selected channel.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: July 22, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Avinash Jain, Ahmed K. Sadek
  • Patent number: 8781417
    Abstract: An embodiment of the present invention provides an apparatus, comprising a transceiver, an antenna tuner connecting said transceiver to an antenna, a power sensor adapted to acquire measurements about transmit power, a receive signal strength indicator (RSSI) adapted to acquire measurements about receive power and wherein said tuner tunes said antenna based upon said transmit and receive measurements to optimize said antenna in both the receive and transmit bands.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: July 15, 2014
    Assignee: BlackBerry Limited
    Inventor: Guillaume Alexandre Blin
  • Patent number: 8761697
    Abstract: A signal processing device for providing first and second analog signals includes first and second clocked digital signal path circuits and a transit time difference measuring device. The first clocked digital signal path circuit is configured to yield first digital data for providing a first analog signal. The second clocked digital signal path circuit is configured to yield second digital data for providing the second analog signal. The transit time difference measuring device is configured to yield a transit time difference measuring signal describing a difference between a signal transit time along a first measuring path and a signal transit time along a second measuring path, with the first measuring path including a first clock supply allocated to the first clocked digital signal path circuit, and with the second measuring path including a second clock supply allocated to the second clocked digital signal path circuit.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: June 24, 2014
    Assignee: Intel Mobile Communications GmbH
    Inventor: Timo Gossmann
  • Publication number: 20140155008
    Abstract: A generator and method for tuning the generator are disclosed. The method includes setting the frequency of power applied by the generator to a current best frequency and sensing a characteristic of the power applied by the generator. A current best error based upon the characteristic of the power is determined, and the frequency of the power at the current best frequency is maintained for a main-time-period. The frequency of the power is then changed to a probe frequency and maintained at the probe frequency for a probe-time-period, which is less than the main-time-period. The current best frequency is set to the probe frequency if the error at the probe frequency is less than the error at the current best frequency.
    Type: Application
    Filed: December 2, 2013
    Publication date: June 5, 2014
    Applicant: Advanced Energy Industries, Inc.
    Inventor: Gideon Van Zyl
  • Patent number: 8744513
    Abstract: Methods, apparatuses, and articles of manufacture are disclosed for adjusting a power level in connection with transmitting parallel uplink channels. In one aspect, a user equipment determines a power-limited condition in which a total transmit power of a group of power-controlled channels exceeds a maximum level in a transmission subframe. The user equipment may determine, in an iterative fashion, power backoff values by which to establish a configured maximum power level. The parallel uplink channels in the group may be prioritized and different backoff values may be used with channels having different priorities. The user equipment may thereafter adjust a transmit power of the power-controlled channels based on the configured maximum power level.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: June 3, 2014
    Assignee: Qualcomm Incorporated
    Inventors: Wanshi Chen, Tao Luo, Peter Gaal, Juan Montojo
  • Patent number: 8718578
    Abstract: A circuit arrangement includes a component having a closed signal path, that closed signal path connected to a first port, a second port and at least a third port. The component has a directed signal flow of a signal applied to one of that ports. Such a coupling device can be connected to a transmitter and to a receiver path, respectively.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: May 6, 2014
    Assignee: Intel Mobile Communications GmbH
    Inventors: Bernd Adler, Zdravko Boos
  • Patent number: 8706051
    Abstract: Provided is a device and a method for adjusting a loop filter gain in an automatic frequency controller, which can allow the automatic frequency controller to operate while maintaining an optimal performance. The device includes a velocity estimator for estimating a change in velocity in accordance with a movement of a terminal; a loop filter gain controller for controlling a loop filter gain in accordance with a change in velocity received from the velocity estimator; and a loop filter gain unit for multiplying a loop filter gain received from the loop filter gain controller and a frequency error for output. Further, there is provided a method for adjusting a loop filter gain in an automatic frequency controller, having the steps of: estimating a change in velocity in accordance with a movement of a terminal; adjusting a loop filter gain in accordance with the estimated change in velocity; and multiplying the adjusted loop filter value and a frequency error for output.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: April 22, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Soo-Jin Park, Chae-Man Lim
  • Patent number: 8620236
    Abstract: An embodiment of the present invention provides a method for limiting tuning of a matching network having variable reactive elements coupled to a variable load impedance to at least reduce an undesirable effect caused by an RF signal. Other embodiments are disclosed.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: December 31, 2013
    Assignee: BlackBerry Limited
    Inventors: Keith R. Manssen, Matthew R. Greene, Wayne E. Smith, Guillaume Blin
  • Patent number: 8611831
    Abstract: Numeric values “a” representing a respective order of transmission by a plurality of transmitting units, and a numeric value N representing the total number of transmitting units, are set for each of the transmitting units. At startup, a transmitting unit for which the value “a” representing the order of transmission of the unit has been set to 1 sets a trigger value to N and transmits information about the value “a” of the unit and detection information from a sensor, and, when the value N is detected from a received signal, transmits the value “a” of the unit and detection information. When a value of a?1 is detected from a received signal, the transmitting unit for which the value “a” representing the order of transmission of the unit has been set to other than 1 transmits the information of the value “a” of the unit and detection information.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: December 17, 2013
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Koji Nakatani, Shu Yamada, Sigeki Sakakibara, Michito Kaneko
  • Patent number: 8606198
    Abstract: Various embodiments may provide a circuit including a radio frequency (RF) power amplifier (PA) and a coupler (e.g., a directional coupler). The coupler may be coupled between a first impedance matching section and a second impedance matching section. The first matching section may transform a first impedance at the RF PA to a second impedance at an RF input port of the coupler. The second matching section may transform the second impedance at an RF output port of the coupler to a third impedance at an output terminal. The second impedance may be a real impedance and the third impedance may be a complex impedance. A real part of the third impedance may be greater than a real part of the second impedance. Additionally, the second impedance may be greater than the first impedance.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: December 10, 2013
    Assignee: TriQuint Semiconductor, Inc.
    Inventor: Peter V. Wright
  • Patent number: 8583065
    Abstract: A novel digitally controlled antenna tuning circuit that enables the implementation of low cost, wideband tuning circuits for antennas in receive applications. The invention is operative to switch a plurality of tuning elements into and out of a main receive signal path. Each individual tuning element is switched into or out of the receive signal path using a single PIN diode. For series connected tuning elements, the diode is connected in parallel to the tuning element. For tuning elements connected in parallel, the diode is connected in series with the tuning element. The diodes are switched in accordance with control voltages which forward bias the diodes to effectively create a low resistance path thus either inserting or removing a tuning element from the receive signal path depending on its configuration in the circuit.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: November 12, 2013
    Assignee: Vishay Intertechnology, Inc.
    Inventor: David Ben-Bassat
  • Patent number: 8532592
    Abstract: A mixed-signal adaptive integrated circuit may comprise a primary function circuit, a digitally controlled analog sub-system cooperatively connected with the primary function circuit, and an on-chip signal analyzer. The on-chip signal analyzer may be arranged to analyze RF signals. The signal analyzer may comprise at least one multiplexor for selecting selected RF signals for comparison and analysis, and may comprise a digital signal processor (DSP) for analyzing the selected RF signals and adjusting at least one operational parameter of the digitally controlled analog sub-system responsive to the analysis.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: September 10, 2013
    Assignee: Scintera Networks, Inc.
    Inventors: Qian Yu, Abhijit G. Shanbhag, Yan Wang
  • Patent number: 8472888
    Abstract: A system that incorporates the present disclosure may include, for example, a computer-readable storage medium having computer instructions to perform actual measurements of one or more performance parameters of a communication device according to a subset of tuning states of a tunable matching network operable in a communication device, determine estimated measurements of the one or more performance parameters of the communication device for a portion of the tuning states not included in the subset of tuning states according to the actual measurements, identify a data set for each of the one or more performance parameters from at least portions of the tuning states and the actual and estimated measurements, and determine from at least a portion of the data sets one or more tuning states that achieve at least one desirable performance characteristic of the communication device. Additional embodiments are disclosed.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: June 25, 2013
    Assignee: Research In Motion RF, Inc.
    Inventors: Keith R. Manssen, Dan Boire, Matthew R. Greene
  • Patent number: 8472904
    Abstract: In various embodiments, systems and methods for automatically tuning an antenna to a desired frequency utilize a tuning detection element that sends or receives a signal in accordance with one mode of the antenna and that is separated from the antenna by a gap and outside of a signal path of the antenna. In various system implementations, a processor communicates with the tuning detection element and antenna and monitors the amplitude of a signal transmitted to or from the tuning detection element. A resonant frequency of the antenna may be tuned to the desired frequency by a tuning element.
    Type: Grant
    Filed: September 15, 2009
    Date of Patent: June 25, 2013
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventor: Douglas W. White
  • Patent number: 8457569
    Abstract: An embodiment of the present invention provides an apparatus, comprising a transceiver, an antenna tuner connecting said transceiver to an antenna, a power sensor adapted to acquire measurements about transmit power, a receive signal strength indicator (RSSI) adapted to acquire measurements about receive power and wherein said tuner tunes said antenna based upon said transmit and receive measurements to optimize said antenna in both the receive and transmit bands.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: June 4, 2013
    Assignee: Research In Motion RF, Inc.
    Inventor: Guillaume Blin
  • Patent number: 8442460
    Abstract: A method for compensating signal distortions in multiple transmitting branches (3, 5; 43, 45, 46) entering a composite amplifier (1; 1?). According to the invention the method comprises the steps of: —providing (S1) one or more input signals (x) to the composite amplifier. —observing (S2) an output signal (z) from the composite amplifier (1; 1?) for each provided input signal; —deriving (S5) an error in each output signal (z) by comparing the output signal with an ideal output signal, said error being caused by said signal distortions; —deriving (S11) the individual contribution from each transmitting branch (3, 5; 43,45,46) to the error by utilizing a composite amplifier model, said composite amplifier model comprising information about the contribution from each constituent amplifier (23, 25; 103a,103b,103c) to the output signal for each provided input signal: —compensating the signal distortions in the transmitting branches (3, 5; 43,45,46) accordingly.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: May 14, 2013
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Tony Fonden, Richard Hellberg, Mats Klingberg, Spendim Dalipi
  • Patent number: 8437714
    Abstract: The present disclosure relates to the efficient transmission of voice and data signals using mobile terminals, and in particular to optimizing the power added efficiency (PAE) of a power amplifier (PA) by controlling the amplifier's load impedance over a range of radio frequency (RF) output power levels. A power amplifier having a first power level and at least a second power level is provided along with a first impedance matching network section with an output. A second impedance matching network section and at least a third impedance network section in communication with the output are selectably coupled to a load network by switches that are opened and close in response to various power levels of operation for the load switch circuit.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: May 7, 2013
    Assignee: RF Micro Devices, Inc.
    Inventors: Lars Sandahl Ubbesen, Michael Nielsen
  • Patent number: 8433256
    Abstract: A communication device includes an integrated circuit having an on-chip thermal sensing circuit that generates a temperature signal based on a temperature of the integrated circuit. A processing module processes the temperature signal to generate temperature information that can be transmitted to a remote device or processes the temperature signal to generate control for adjusting transmit and/or receive characteristics of an RF transceiver.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: April 30, 2013
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza (Reza) Rofougaran