With Particular Receiver Circuit Patents (Class 455/334)
  • Patent number: 10257267
    Abstract: A solution for running a software application on a computing machine is provided, which includes registering a capability of a delegation component to execute at least one action on the computing machine, each one defined by at least one characteristic thereof, receiving a request for executing the at least one action from the software application by the delegation component, the request being bound to the delegation component at run-time according to the capability registration thereof, and delegating, by the delegation component, the execution of the at least one action to at least one local component of the computing machine being capable of executing at least part of the at least one action and/or to at least one remote component of at least one remote computing machine being capable of executing at least part of the at least one action according to an availability of the at least one local component.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: April 9, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Claudio Marinelli, Luigi Pichetti, Alex Donatelli, Giovanni Lanfranchi
  • Patent number: 10212221
    Abstract: A solution for running a software application on a computing machine is provided, which includes registering a capability of a delegation component to execute at least one action on the computing machine, each one defined by at least one characteristic thereof, receiving a request for executing the at least one action from the software application by the delegation component, the request being bound to the delegation component at run-time according to the capability registration thereof, and delegating, by the delegation component, the execution of the at least one action to at least one local component of the computing machine being capable of executing at least part of the at least one action and/or to at least one remote component of at least one remote computing machine being capable of executing at least part of the at least one action according to an availability of the at least one local component.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: February 19, 2019
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Claudio Marinelli, Luigi Pichetti, Alex Donatelli, Giovanni Lanfranchi
  • Patent number: 10014909
    Abstract: There is provided a communication device including a transmission unit configured to transmit a modulated signal obtained by performing frequency conversion to convert a baseband signal output by a first electronic device into a signal with a higher frequency band than the baseband signal, using a waveguide as a transmission path, and a detection target mechanism corresponding to a mechanism included in a second electronic device that receives the baseband signal output by the first electronic device, the detection target mechanism being configured to be connected to the first electronic device and to be detected by the first electronic device when the first electronic device and the second electronic device are connected.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: July 3, 2018
    Assignee: Sony Semiconductor Solutions Corporation
    Inventor: Hirosada Miyaoka
  • Patent number: 9979862
    Abstract: A buffering method for video playing includes: playing a video according to an amount of video buffer data and a predefined playing threshold, and monitoring a network speed; determining whether the network speed meets a predefined condition; and updating a previously set video buffer depth and the playing threshold according to the network speed if the network speed meets the predefined condition. A storage medium and device are also provided.
    Type: Grant
    Filed: April 23, 2017
    Date of Patent: May 22, 2018
    Assignee: UBTECH ROBOTICS CORP.
    Inventors: Youjun Xiong, Haiwu Su, Lin Chen
  • Patent number: 9960795
    Abstract: Provided are a semiconductor device and an operating method thereof. A semiconductor device includes a mixer configured to upconvert a baseband signal using a local oscillator (LO) signal; and a notch filter configured to receive the upconverted signal from the mixer and filter notch frequency components, the notch filter further configured to resonate at a fundamental frequency to provide a higher impedance and resonate at a notch frequency different from the fundamental frequency to provide a lower impedance.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: May 1, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Qing Liu, Dae Hyun Kwon, Hui Changhsiang
  • Patent number: 9831916
    Abstract: The disclosure relates to a method for transmitting data via direct current lines for energy transmission from a first communication unit to a second communication unit. The method includes generating a high-frequency test signal having a predefined voltage amplitude by the first or the second communication unit and coupling the high-frequency test signal onto the direct current lines. The method further includes determining a current level caused by the high-frequency test signal on the direct current lines by the first communication unit, and determining a voltage amplitude for a high-frequency signal based on the current level caused by the test signal. The method also includes coupling a high-frequency signal having the predetermined voltage amplitude onto the direct current lines by the first communication unit. The disclosure also relates to a system for transmitting data via direct current lines for energy transmission and to a photovoltaic installation having such a system.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: November 28, 2017
    Assignee: SMA Solar Technology AG
    Inventor: Holger Behrends
  • Patent number: 9806677
    Abstract: An amplifier (100) adapted for noise suppression comprises a first input (102) for receiving a first input signal and a second input (104) for receiving a second input signal, the first and second input signals constituting a differential pair. A first output (106) delivers a first output signal and a second output (108) delivers a second output signal, the first and second output signals constituting a differential pair. A first transistor (MCG1) has a first drain (110) coupled to the first output (106) such that all signal current, except parasitic losses, flowing through the first drain (110) flows through the first output (106), and the first transistor (MCG1) further having a first source (112) coupled to the first input (102).
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: October 31, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Daniele Mastantuono, Sven Mattisson
  • Patent number: 9802050
    Abstract: An energy-releasing carbon nanotube transponder comprising a nanocapacitor connected to at least one carbon nanotube and method of using same are described. An adjustable amount of electric energy is stored within the nanocapacitor so that the energy-releasing carbon nanotube transponder delivers either a biologically destructive or a biologically non-destructive electrical charge to target cells in response to biological, chemical or electrical stimuli. An optional biocompatible coating onto the outer surface of the carbon nanotube transponder improves cellular targeting, cellular binding or body tolerance towards the carbon nanotube transponder. Optionally, a molecular label attached to at least one carbon nanotube allows for in vivo tracking of the carbon nanotube transponder.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: October 31, 2017
    Assignee: Rush University Medical Center
    Inventor: Marvin A. Rossi
  • Patent number: 9742459
    Abstract: An electronic device may be provided with wireless circuitry. Control circuitry may be used to adjust the wireless circuitry. The wireless circuitry may include an antenna that is tuned using tunable components. The control circuitry may gather information on the current operating mode of the electronic device, sensor data from a proximity sensor, accelerometer, microphone, and other sensors, antenna impedance information for the antenna, and information on the use of connectors in the electronic device. Based on this gathered data, the control circuitry can adjust the tunable components to compensate for antenna detuning due to loading from nearby external objects, may adjust transmit power levels, and may make other wireless circuit adjustments.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: August 22, 2017
    Assignee: Apple Inc.
    Inventors: Enrique Ayala Vazquez, Hongfei Hu, Mattia Pascolini, Yuehui Ouyang, Salih Yarga, Yijun Zhou, Erdinc Irci, Jayesh Nath, Ming-Ju Tsai, Matthew A. Mow, Liang Han, James G. Judkins, Robert W. Schlub
  • Patent number: 9660856
    Abstract: A method and system of compensating for distortion in a baseband in-phase (I) and a corresponding baseband quadrature (Q) signal. The circuit includes an in-phase I attenuator configured to attenuate the baseband in-phase I signal and an in-phase Q attenuator configured to attenuate the baseband Q signal. There are one or more circuits that are configured to receive the attenuated in-phase I signal and the attenuated baseband Q signal. Each circuit performs a different calculation based on predetermined equations configured to determine the IM2, HD2@0°, HD2@90°, IM3@0°, IM3@90°, HD3@0°, and HD3@90°. The distortion compensation circuit is configured to use the result of at least one of the calculation circuits to generate I and Q distortion compensation signals.
    Type: Grant
    Filed: July 22, 2015
    Date of Patent: May 23, 2017
    Assignee: Linear Technology Corporation
    Inventor: John Perry Myers
  • Patent number: 9560060
    Abstract: Systems and methods can support identifying multiple radio transmitters as being integrated within a single communications device. Radio frequency signals may be collected using one or more sensors incorporating radio receivers. A first radio frequency signature and a second radio frequency signature may be identified within one or more of the radio frequency signals as originating respectively from a first radio transmitter and a second radio transmitter. Characteristics of the first and second radio frequency signatures may be analyzed to evaluate a relationship between the first and second radio frequency signatures. It may be determined whether or not the first and second radio transmitters are integrated within a common wireless electronic device based upon the evaluated relationship between the first radio frequency signature and the second radio frequency signature. Characteristics and behaviors associated with the wireless electronic device may be determined therefrom.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: January 31, 2017
    Assignee: Bastille Networks, Inc.
    Inventors: Robert John Baxley, David Maynor, Logan Michael Lamb
  • Patent number: 9538468
    Abstract: The present description provides methods, computer program products, and systems for saving power in Wi-Fi devices utilizing Bluetooth. A Wi-Fi radio transitions to deep sleep mode from active mode while a Bluetooth radio remains active. An active Wi-Fi connection to the access point can be maintained by the station while in deep sleep mode as needed to prevent being disassociated. Responsive to the indication of data packets waiting at the access point, sent over the Bluetooth radio, the Wi-Fi radio at the station can be transitioned from the deep sleep mode to the active mode. A notification of active mode is sent to the access point currently associated with the Wi-Fi radio so that packets can be forwarded.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: January 3, 2017
    Assignee: Fortinet, Inc.
    Inventors: Suryanarayanan Radhakrishnan, Saurabh Bhargava, Sanjay Gandotra
  • Patent number: 9479186
    Abstract: In described examples, an analog to digital converter (ADC) includes a main ADC and a reference ADC. The main ADC generates a zone information signal and a digital output in response to an input signal. The reference ADC receives a plurality of reference voltages from the main ADC. The plurality of reference voltages includes a first reference voltage and a second reference voltage. The reference ADC generates a reference output in response to the input signal, the first reference voltage and the second reference voltage. A subtractor generates an error signal in response to the digital output and the reference output. A logic block generates one of a first offset correction signal, a second offset correction signal and a gain mismatch signal in response to the zone information signal, the error signal and the reference output.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: October 25, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Srinivas Kumar Reddy Naru, Nagarajan Viswanathan, Visvesvaraya Pentakota
  • Patent number: 9402279
    Abstract: Systems and techniques relating to wireless communications are described. A described technique includes performing, at a wireless communication device, an arbitration among multiple different wireless radio technologies, which collectively use two or more radio resources of the wireless communication device, to produce an arbitration result; and operating the two or more radio resources in accordance with the arbitration result. Performing the arbitration can include performing a first level arbitration between a request associated with a first technology of the multiple different wireless radio technologies and a request associated with a second technology of the multiple different wireless radio technologies to produce a first level result; and performing a second level arbitration to produce a second level result when indicated by the first level result. The arbitration result can be based on the first level result and the second level result, if any.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: July 26, 2016
    Assignee: Marvell International Ltd.
    Inventors: Hao Zhang, Nelson Xu, Yiqing Shen, Ken Yeung
  • Patent number: 9269050
    Abstract: Various methods and systems are provided for classification using correntropy. In one embodiment, a classifying device includes a processing unit and memory storing instructions in modules that when executed by the processing unit cause the classifying device to adaptively classify a data value using a correntropy loss function. In another embodiment, a method includes adjusting a weight of a classifier based at least in part on a change in a correntropy loss function signal and classifying a data value using the classifier. In another embodiment, a method includes classifying a data value by predicting a label for the data value using a discriminant function, determining a correntopy statistical similarity between the predicted label and an actual label based at least in part on a correntropy loss function, and minimizing an expected risk associated with the predicted label based at least in part on a correntropy statistical similarity.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: February 23, 2016
    Assignee: University of Florida Reseach Foundation, Inc.
    Inventors: Jose Carlos Principe, Abhishek Singh
  • Patent number: 9134242
    Abstract: The present invention discloses a method and its associated apparatus to retrieve the amplitude and, especially, the phase of nonlinear electromagnetic waves. The application field of the present invention is optical imaging. A sample is probed by coherent electromagnetic radiation, and by a nonlinear interaction such as harmonic generation a nonlinear object wave is emitted. A nonlinear reference wave is generated by interaction of the same nature with the coherent electromagnetic radiation, and an interference between the nonlinear object wave and the nonlinear reference wave is sensed by a detector array. As an example, the technique makes possible real-time nanometric localization and tracking of nonlinear field emitters, such as, but not limited to, nanoparticles.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: September 15, 2015
    Assignee: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
    Inventors: Etienne Shaffer, Christian Depeursinge
  • Patent number: 9042851
    Abstract: One or more circuits may comprise at least one first-type analog-to-digital converter (ADC) and at least one second-type ADC. The circuit(s) may be operable to receive a plurality of signals, each of which may comprise a plurality of channels. The circuit(s) may be operable to digitize a selected one or more of the channels. Which, if any, of the selected channels are digitized via the at least one first-type ADC and which, if any, of the selected channels are digitized via the at least one second-type ADC, may be based on which of the plurality of channels are the selected channels and/or based on power consumption of the circuit(s). A bandwidth of each first-type ADC may be on the order of the bandwidth of one of the received signals. A bandwidth of each second-type ADC may be on the order of the bandwidth of one of the plurality of channels.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: May 26, 2015
    Assignee: MaxLinear, Inc.
    Inventor: Curtis Ling
  • Patent number: 9042847
    Abstract: Embodiments of the present invention provide a filter, a receiver, a transmitter, and a transceiver. The filter includes a resonant cavity component, a microstrip filtering component, and two connecting pieces, where the resonant cavity component includes at least two resonant cavities connected in parallel, each resonant cavity is provided with a resonator and a tuning screw, the microstrip filtering component includes a dielectric substrate and a microstrip positioned on the dielectric substrate, one of the connecting pieces matches and connects one end of the microstrip to the resonator on one resonant cavity, the other connecting piece matches and connects the other end of the microstrip to the resonator on another resonant cavity, and impedance of the resonant cavity component is less than impedance of the microstrip filtering component.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: May 26, 2015
    Assignee: Hauwei Technologies Co., Ltd.
    Inventor: Yanzhao Zhou
  • Patent number: 9042859
    Abstract: A circuit includes first and second transconductance stages that generate first and second currents, respectively, in response to an input signal. A current combiner circuit selectively couples the first current to a first output, selectively couples the second current to the first output, selectively couples the first current to a second output, and selectively couples the second current to the second output. In response to the first current being coupled to both the first and second outputs, the current combiner circuit couples the second current to both the first and second outputs. In response to the first current being decoupled from the second output, the current combiner circuit decouples the second current from both the first and second outputs. In response to the first current being decoupled from the first output, the current combiner circuit decouples the second current from both the first and second outputs.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: May 26, 2015
    Assignee: Marvell World Trade Ltd.
    Inventors: Gregory Uehara, Xiaohua Fan
  • Patent number: 9041539
    Abstract: Provided are a radio frequency identification (RFID) tag and a method for receiving a signal of the RFID tag. The RFID tag includes a voltage generator configured to generate a voltage signal from a received signal, a common gate circuit configured to convert the voltage signal into a current signal, a current/voltage converter configured to the current signal into a voltage signal by using a resistance value, a low-pass filter configured to perform low-pass filtering on the converted voltage signal, a buffer configured to buffer the low-pass-filtered voltage signal within an operation range, and a peak detector configured to detect a peak value from the buffered signal to demodulate information data. The current/voltage converter controls the resistance value to convert the current signal into a voltage signal included within the operation range of the buffer.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: May 26, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Iljong Song, CholSu Yoon
  • Patent number: 9037087
    Abstract: Computationally implemented methods and systems include receiving one or more signals through a directional antenna of a wearable computing device, the one or more signals having been transmitted by one or more electronic devices; determining that the one or more electronic devices are within a spatial pod surrounding the wearable computing device based, at least in part, on the one or more signals received by the wearable computing device; and obtaining at least access to one or more functionalities from the one or more electronic devices that were determined to be within the spatial pod of the wearable computing device. In addition to the foregoing, other aspects are described in the claims, drawings, and text.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: May 19, 2015
    Assignee: Elwha LLC
    Inventors: Pablos Holman, Roderick A. Hyde, Royce A. Levien, Richard T. Lord, Robert W. Lord, Mark A. Malamud, Clarence T. Tegreene
  • Patent number: 9036514
    Abstract: Systems and methods for combining signals from multiple active wireless receivers are discussed herein. An exemplary system comprises a first downconverter, a phase comparator, a phase adjuster, and a second downconverter. The first downconverter may be configured to downconvert a received signal from a first antenna to an intermediate frequency to create an intermediate frequency signal. The phase comparator may be configured to mix the received signal and a downconverted signal to create a mixed signal, compare a phase of the mixed signal to a predetermined phase, and generate a phase control signal based on the comparison, the downconverted signal being associated with the received signal from the first antenna. The phase adjuster may be configured to alter the phase of the intermediate frequency signal based on the phase control signal. The second downconverter may be configured to downconvert the phase-shifted intermediate frequency signal to create an output signal.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: May 19, 2015
    Assignee: Aviat U.S., Inc.
    Inventor: Ying Shen
  • Patent number: 9037103
    Abstract: A method for processing a radio signal includes: receiving a signal on two antennas; demodulating the signal using first and second independent signal paths that are synchronized by symbol number; maximum ratio combining branch metrics from the two receiver paths; and using the combined branch metrics to produce an output, wherein the receiver paths include an arbitration scheme. A receiver that implements the method is also provided.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: May 19, 2015
    Assignee: iBiquity Digital Corporation
    Inventors: Brian W. Kroeger, Paul J. Peyla, Jeffrey S. Baird
  • Patent number: 9031519
    Abstract: The present invention relates to a node (1) in a wireless communication system, the node (1) comprising at least a first and second antenna function (2, 3), and a first and second radio chain (4, 5). At least at the start of a first mode of operation, each antenna function (2, 3) is connected to a corresponding radio chain (4, 5). The node further comprises a switching network (6) and a beamforming network (7), which switching network (6), at least at the start of a second mode of operation, is arranged to disconnect at least one antenna function (2) from its corresponding radio chain (4) and connect it to another of the radio chains (5) via at least a part of the beamforming network (7), such that at least two antenna functions (2, 3) are connected to the same radio chain (5). The node (1) is arranged to perform beamforming for said at least two antenna functions (2, 3) by means of said beamforming network (7), the switching network (6) being arranged to switch between the first mode and the second mode.
    Type: Grant
    Filed: June 11, 2010
    Date of Patent: May 12, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Andreas Nilsson, Anders Derneryd, Jonas Fridén, Lars Manholm
  • Patent number: 9020457
    Abstract: The present disclosure relates to a circuit for providing a signal gain, comprising: a first stage comprising a first set of variable gain transconductors arranged for receiving an input signal and for performing phase-shifting of the input signal, thereby producing an intermediate signal, and a second stage, comprising a second set of transconductors and a plurality of capacitors arranged for receiving the intermediate signal and for providing an output signal to a combiner, wherein the first stage and second stage together form a filter, and wherein the first set of variable gain transconductors and at least one of the transconductors of the second set define the signal gain of the circuit.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: April 28, 2015
    Assignees: IMEC, Vrije Universiteit Brussel
    Inventors: Viki Szortyka, Piet Wambacq
  • Patent number: 9020073
    Abstract: One embodiment relates to a low intermediate frequency (IF) receiver. The low-IF receiver includes an analog front end that is configured to receive a modulated IQ data signal and provide an in-phase signal and a quadrature signal, where the in-phase signal is phase shifted by approximately 90° relative to the quadrature signal. The low-IF receiver further includes a digital processing block, and a single path that provides only one of the in-phase signal and the quadrature signal to the digital processing block. Other receivers and methods are also disclosed.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: April 28, 2015
    Assignee: Intel Mobile Communications GmbH
    Inventors: Stefan van Waasen, Christian Grewing, Michael Lewis
  • Patent number: 9020456
    Abstract: A wake-up function is provided for a low power radio. The radio includes: an antenna, a rectifier, and a comparator. The rectifier is configured to receive an RF signal from the antenna and generates an output having a magnitude that decreases in the presence of the RF signal. The comparator compares the output from the rectifier to a reference signal and outputs an activation signal for another radio component. In response the activation signal, the radio component will transition from a low power consumption mode to a higher power consumption mode. In this way, the rectifier and comparator cooperatively operate to perform a wake-up function in the presence of an RF signal.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: April 28, 2015
    Assignee: The Regents of the University of Michigan
    Inventors: David D. Wentzloff, Nathan E. Roberts
  • Patent number: 9014649
    Abstract: A system may comprise a plurality of signal processing paths, a bin-wise combiner, an inverse transformation block, and a DAC. Each signal processing path may comprise a transformation block that is operable to transform a first time-domain digital signal to an associated frequency-domain signal having a plurality of subband signals. The bin-wise combiner may be operable to combine corresponding subband signals of the plurality of signal processing paths. The inverse transformation block may be operable to transform output of the bin-wise combiner to an second time-domain signal. The DAC may be operable to converts the second time-domain signal to a corresponding analog signal.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: April 21, 2015
    Assignee: MaxLinear, Inc.
    Inventors: Anand K. Anandakumar, Curtis Ling, Sugbong Kang
  • Patent number: 9014655
    Abstract: A wireless communication system includes: a filter; and a semiconductor chip including a signal processing integrated circuit having an amplifier, wherein a main surface of the semiconductor chip is provided with a plurality of electrode terminals along an edge portion thereof; wherein the amplifier has a transistor including a control electrode, a first electrode through which a signal is outputted, and a second electrode to which a voltage is applied; wherein the control electrode, the first electrode and the second electrode of the transistor are connected to the electrode terminals, respectively; and wherein none of wirings are arranged between the electrode terminals and placements of the control electrode, the first electrode and the second electrode, making space between the electrodes and the electrode terminals narrow.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: April 21, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Kumiko Takikawa, Satoshi Tanaka, Yoshiyasu Tashiro
  • Patent number: 9014654
    Abstract: A semiconductor apparatus includes multiple field effect transistors provided between an antenna terminal to be connected to an antenna and multiple external terminals through which RF signals are capable of being supplied and a voltage generating circuit. When the field effect transistors provided between one of the multiple external terminals and the antenna terminal are turned off, the voltage generating unit charges a capacitor via a resistor circuit by switching the polarity of the RF signal to be supplied to the other external terminal with respect to the control signal and outputs a voltage based on a sum of the charge voltage and the voltage of the control signal as the gate drive voltage. The resistor circuit includes a first resistor including positive temperature characteristics and a second resistor including negative temperature characteristics.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: April 21, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Tsutomu Kobori, Shigeki Koya, Akishige Nakajima, Yasushi Shigeno
  • Patent number: 8989690
    Abstract: A radio frequency front end of a receiver including a tunable filter receiving a signal; a controller for tuning the tunable filter; and an interference detection circuit configured to detect interference and provide an input to a controller, wherein the controller tunes the tunable filter based on the input from the interference detection circuit. Also a method for removing interference at a radio frequency front end of a receiver, the method detecting interference at an interference detection circuit; and tuning at least one tunable filter to at least one frequency of the detected interference.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: March 24, 2015
    Assignee: BlackBerry Limited
    Inventors: Christopher Andrew Devries, Daniel Noel Badiere
  • Patent number: 8989586
    Abstract: Optical communications system (10) and method for transmission of payload data (PD) from a low earth orbit satellite (20) to an optical ground terminal (30), the low earth orbit satellite (20) being connectable with the optical ground terminal (30) via an optical downlink channel (DL), and the optical ground terminal (30) being connectable with the low earth orbit satellite (20) via an uplink channel (UC); wherein said uplink channel (UC) is an acquisition and tracking beacon channel by means of a ground beacon (GB) controlled by a point-acquisition-track subsystem (PAT), the ground beacon (GB) comprising a wide angle beam (W) for acquisition and a guidance beam (G) for tracking; and wherein the ground beacon (GB) for the uplink channel (UC) is a pulse position modulated PPM channel.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: March 24, 2015
    Assignee: RUAG Schweiz AG
    Inventors: Felix Andreas Arnold, Thomas Dreischer
  • Patent number: 8989691
    Abstract: Power supply rejection in a single-ended receiver, through impedance balancing, is described. The single-ended receiver includes a first low noise amplifier and a second low noise amplifier. The single-ended receiver also includes a multi-port coupled transformer that outputs a differential signal. The multi-port coupled transformer includes a first primary coil that is coupled to an output of the first low noise amplifier and a second primary coil. The single-ended receiver also includes balancing impedances at the output of each of the low noise amplifiers. These impedances can be configured such that the on impedance of the first low noise amplifier equals the combined impedance of the off impedance of the second low noise amplifier and the balancing impedance. This balancing of impedances on the first and second primary coils results in power supply rejection of noise and spurious signals.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: March 24, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Ojas M Choksi, Wei Zhuo
  • Patent number: 8958764
    Abstract: A method of and apparatus for detecting signal features including amplitude, phase and timing of recognizable input signals in a frequency band or spectrum of interest. One or more super-regenerative oscillators are provided, each having a center frequency and each detecting signal features of recognizable input signals in the frequency band or spectrum of interest during multiple, successive time slots. The center frequency of each of the one or more super-regenerative oscillators is varied between time slots in a selected sequence, preferably according to a Segmentlet algorithm. The one or more super-regenerative oscillators extract the signal features of each the recognizable input signals in different time slots and/or in different super-regenerative oscillator and with a different time-slot associated center frequency associated with the one or more super-regenerative oscillators, thereby providing a time-frequency-amplitude map of the frequency band or spectrum of interest.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: February 17, 2015
    Assignee: HRL Laboratories, LLC
    Inventors: Zhiwei Xu, Donald A. Hitko, Peter Petre
  • Patent number: 8958766
    Abstract: An electronic appliance comprising an electrical circuit and an operating mode switching unit which can be awakened out of a sleep state into a working state in which the current consumption of the circuit is greater in than in the sleep state. To receive a radio signal, the appliance has a receiver comprising a UHF carrier that is amplitude-modulated by a modulation signal. The receiver comprises a UHF antenna connected to a passive filter stage to an input of a passive rectifier circuit. An output of the rectifier circuit is connected to a detector for the modulation signal. To wake the electrical circuit from the sleep state, the operating mode switching unit has a control connection to the detector. The appliance has a low current draw in the sleep state by matching the output impedance of the rectifier circuit to the input impedance of the detector.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: February 17, 2015
    Assignee: SmartExergy WMS GmbH
    Inventors: Tolgay Ungan, Gerd Ulrich Gamm, Leonhard Michael Reindl, Thomas Ostertag, Matthias Sippel, Thomas Wendt
  • Patent number: 8958768
    Abstract: Methods and systems for receiving in-phase and quadrature (I and Q) radio frequency (RF) signals without a phase shifter utilizing a leaky wave antenna are disclosed and may include generating in-phase and quadrature signals using a leaky wave antenna coupled to one or more low-noise amplifiers (LNAs) on a chip and without a phase shifter. The RF I and Q signals may be communicated from the single leaky wave antenna using coplanar feed points and/or feed points on a top surface and a bottom surface of the single leaky wave antenna. The leaky wave antennas may be integrated on the chip, on a package to which the chip is affixed, and/or on a printed circuit board to which the chip is affixed. The RF I and Q signals may be amplified by the one or more LNAs and may down-convert the RF I and Q signals to baseband signals.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: February 17, 2015
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8923780
    Abstract: Aspects of a method and system for sharing low noise amplifier (LNA) circuitry in a single chip Bluetooth and wireless local area network (WLAN) system are disclosed. Aspects of the system may comprise a chip with integrated WLAN and Bluetooth radios. RF signals may be received via a single antenna coupled to a shared LNA integrated in chip. When WLAN signals are received they are communicated from the shared LNA to a subsequent amplification stage integrated within the WLAN radio. When Bluetooth signals are received they are communicated from the shared LNA to a subsequent amplification stage that comprises a transconductance amplifier integrated within the WLAN radio and an LNA load integrated within the Bluetooth radio. Gains in the LNAs, the transconductance amplifier, and/or the subsequent WLAN amplification stage may be dynamically adjusted. Outputs from the subsequent amplification stages may be communicated to mixers for further processing.
    Type: Grant
    Filed: January 12, 2007
    Date of Patent: December 30, 2014
    Assignee: Broadcom Corporation
    Inventors: Adedayo Ojo, Bojko Marholev, Shahla Khorram
  • Patent number: 8923790
    Abstract: A wireless communication receiver includes a circuit, an analog-to-digital converter (ADC) and a processing circuit. The circuit receives a wireless signal and outputs an analog signal according to a gain index. The ADC converts the analog signal to a digital signal. The processing circuit adjusts the gain index according to a clipping number of the ADC.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: December 30, 2014
    Assignee: Realtek Semiconductor Corp.
    Inventors: Chien-Wei Hsin, Chung-Yao Chang
  • Patent number: 8923779
    Abstract: Systems and methods for tuning an antenna for a frequency modulation (FM) transceiver are provided. A representative system includes: a network of electrical adjustable passive components that receives and sends radio frequency (RF) signals to a receiver circuitry via the network of electrical adjustable passive components. The receiver circuitry determines the received signal strength indication (RSSI) of the RF signal. The system further includes a transmitter circuitry that transmits RF signals via the network of electrical adjustable passive components, and a peak detector circuitry that receives and determines a voltage output of the RF signals from the variable capacitors. An auto-tune circuitry receives the RSSI and output value from the receiver circuitry and the peak detector circuitry, respectively.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: December 30, 2014
    Assignee: CSR Technology Inc.
    Inventors: Noshir Dubash, Thomas E. Ricks, Jr., Richard J. McConnell
  • Patent number: 8917160
    Abstract: An RFID module including an antenna element forming an RFID antenna; an RFID circuit block to which the antenna element is connected; and a first resonance frequency adjustment circuit having an element that includes a drain terminal connected to the antenna element, a gate terminal that is grounded, and a source terminal that is grounded, wherein a pull-up resistor is connected between the drain terminal and a power supply.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: December 23, 2014
    Assignees: Sony Corporation, Sony Mobile Communications Inc.
    Inventors: Takaaki Tsushima, Toshiyuki Takahashi, Toshihiko Takeda, Zenkichi Mihara
  • Patent number: 8918139
    Abstract: An electronic device may include antenna structures. Wireless transmitter circuitry such as cellular telephone transmitter circuitry and wireless local area network circuitry may transmit signals using the antenna structures. A wireless receiver may receive signals from the antenna structures through an adjustable-linearity amplifier. The wireless receiver may operate in a receive band such as a satellite navigation system receive band. During operation of the electronic device, control circuitry in the device may analyze the frequencies and powers of the transmitted signals to determine whether there is a potential for interference for the receive band to be generated in the adjustable-linearity amplifier. In response to determining that there is a potential for interference, the control circuitry may increase the linearity of the adjustable-linearity amplifier.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: December 23, 2014
    Assignee: Apple Inc.
    Inventors: William J. Noellert, Ronald W. Dimpflmaier, Nicholas W. Lum
  • Patent number: 8914082
    Abstract: A mobile terminal and a method of operating an antenna thereof are provided. The mobile terminal includes a plurality of antennas. A resonance frequency moving unit moves a resonance frequency of at least one of the plurality of antennas. And a controller controls the resonance frequency moving unit to sustain or move a resonance frequency of the at least one antenna according to use of a plurality of antennas. Therefore, by minimizing mutual interference occurring between a plurality of antennas using a similar frequency band, a wireless communication performance can be improved.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: December 16, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sung In Seo
  • Patent number: 8903341
    Abstract: Certain aspects of the present disclosure provide ordering techniques for a Successive Interference Cancellation (SIC) receiver which may be used to robustly choose a correct stream for first decode under varying data rates, SNR and mobile propagation conditions in Multiple Input Multiple Output (MIMO) systems. The SIC ordering techniques discussed in the disclosure include SNR and/or Rate based information theoretic approach. For example, the SIC receiver may evaluate an SNR based or RATE-based information theoretic metric for the MIMO streams and choose one stream with a higher value of the metric for decoding first. A speculative single code block based approach is may also be used for selecting a stream for first decode, by leveraging the presence of per code block Cyclic Redundancy Check (CRC) and the lack of time diversity in LTE systems.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: December 2, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Supratik Bhattacharjee, Brian Clarke Banister
  • Patent number: 8903330
    Abstract: A method, device, and system for communication signal transmission are provided, which relate to the field of communications, so as to improve reception performance of the network. The method includes dividing, by a multi-frequency receiver, Radio Frequency (RF) signals by frequency bands received from an antenna to obtain RF signals of different frequency bands; sending a first group of RF signals of a predetermined frequency band to an RF unit so that the RF unit converts the received first group of the RF signals of the predetermined frequency band into first baseband digital signals and sends the first baseband digital signals to a baseband processing unit; and converting a second group of the RF signals of the predetermined frequency band into second baseband digital signals and sending the second baseband digital signals to the baseband processing unit by using a digital baseband interface.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: December 2, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Wangjun Wu, Yulin Li, Fengqing Yan, Xiaodong Zhang, Xiwen Zhang
  • Publication number: 20140349601
    Abstract: Methods and apparatus are described for processing data in a wireless communication network. Iterative estimation techniques are used to enable tracking of time-varying communication channels. A signal is transmitted over a channel in the network, the signal comprising a sequence of symbols carried on a plurality of sub-carriers. Boot-up estimator estimates, in a time domain, parameters of a model of the channel based on the received signal. A domain converter transforms at least one of the estimated parameters from the time domain to provide at least one transformed parameter in a second domain. An equalizer and decoder determine estimates of symbols from the received signal using the at least one transformed parameter, and tracking estimator updates the estimated model parameters during reception of the signal using at least one estimated symbol.
    Type: Application
    Filed: August 6, 2014
    Publication date: November 27, 2014
    Inventors: Paul Dean Alexander, Alexander James Grant, David Victor Lawrie Haley
  • Patent number: 8897832
    Abstract: Disclosed is a semiconductor device including a semiconductor chip and a semiconductor package. The semiconductor package includes an antenna formed of a lead frame, a first wire that connects the antenna and a first electrode pad of the semiconductor chip, and a second wire that connects the antenna and a second electrode pad of the semiconductor chip. The semiconductor chip is disposed in one of four regions in the semiconductor package sectioned by line segments connecting midpoints of two pairs of opposing sides of the semiconductor package. A centroid of the semiconductor chip is positioned outside a closed curve composed of a straight line segment connecting a first connection point where the antenna and the first wire are connected and a second connection point where the antenna and the second wire are connected, and a line connecting the first and second connection points along the antenna.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: November 25, 2014
    Assignee: Renesas Electronics Corporation
    Inventors: Kenichiro Hijioka, Koichi Yamaguchi
  • Patent number: 8886135
    Abstract: An apparatus including a first port configured to receive signals from a transceiver and to receive a first antenna; a second port configured to receive signals from a transceiver and to receive a second antenna; a first reactive component coupled to the first port; a second reactive component coupled to the first reactive component at a first junction and to the second port, wherein at least the first reactive component is configured to have an impedance that shifts the phase of a first signal, in a second operational resonant frequency band, received from the first antenna, and the second reactive component is configured to have an impedance that shifts the phase of a second signal, in the second operational resonant frequency band, received from the transceiver, so that the first signal and the second signal at least partially destructively interfere with one another at the first junction.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: November 11, 2014
    Assignee: Nokia Corporation
    Inventors: Lassi Pentti Olavi Hyvonen, Joonas Veli-Allan Krogerus, Pei Li, Arto Tapio Hujanen, Matti Kalevi Somersalo
  • Patent number: 8873692
    Abstract: Clock compensation for GPS receivers. A receiver in accordance with the present invention comprises a Radio Frequency (RF) portion, and a baseband portion, coupled to the RF portion, wherein the baseband portion comprises a crystal, an oscillator, coupled to the crystal, wherein the oscillator generates a clock signal based on a signal received from the crystal, a counter, coupled to the oscillator via the clock signal, a comparator, coupled to the counter, a controller, at least one logic gate, coupled to the comparator and the controller, and a combiner, coupled to the at least one logic gate, the controller, and the counter and producing an accurate clock signal therefrom.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: October 28, 2014
    Assignee: Qualcomm Incorporated
    Inventor: Richard Obermeyer
  • Patent number: 8874054
    Abstract: A device for receiving a broadband multi-channel radiofrequency signal includes a radiofrequency analog input stage connected to an intermediate-frequency conversion stage. The conversion stage includes at least one conversion chain having a frequency mixer that transposes the signal to an intermediate frequency connected to the input of an analog-digital converter with a high frequency sampling rate. The intermediate and sampling frequencies in each conversion chain are selected such that, considering the noise generated by the sampling overtones of the corresponding analog-digital converter, each of the radiofrequency signal channels has a signal/noise ratio that is greater at output than a predetermined value of at least one conversion chain.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: October 28, 2014
    Assignee: EADS Secure Networks
    Inventors: Benoit Clement, Gilles Latouche, Olivier Muller
  • Patent number: 8862082
    Abstract: A receiver for nano communication includes a power source including a cathode and an anode; a cathode unit connected to the cathode of the power source, the cathode unit including a nano device configured to receive a wireless signal modulated according to a predetermined modulation scheme, have at least two different resonant frequencies, and resonate based on a frequency of the wireless signal and the at least two different resonant frequencies; and an anode unit connected to the anode of the power source, the anode unit being configured to detect electrons emitted from the nano device, and demodulate a the wireless signal based on a pattern of the detected electrons.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: October 14, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun Gi Ahn, Jong Bu Lim