With Frequency Stabilization (e.g., Automatic Frequency Control) Patents (Class 455/75)
  • Patent number: 11860293
    Abstract: A device (112, 130) is configured to communicate data (108) on a radio channel (101, 105, 106) according to a radio access technology. The radio access technology comprises pilot signals and transmission blocks for the data (108). The device (112, 130) is further configured to participate in the radar probing (109) employing at least some of the pilot signals as radar probe pulses of the radar probing (109).
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: January 2, 2024
    Assignee: Sony Group Corporation
    Inventors: Zhinong Ying, Thomas Bolin, Peter C. Karlsson, Erik Bengtsson
  • Patent number: 11808872
    Abstract: Techniques are discussed herein for providing on-demand positioning reference signals (PRS) to user equipment (UE). An example method for determining a location of a user equipment according to the disclosure includes receiving a first assistance data associated with a first positioning reference signal configuration, transmitting a request to modify one or more parameters of the first positioning reference signal configuration, receiving a second assistance data associated with a second positioning reference signal configuration, wherein the second positioning reference signal configuration is based at least in part on the request to modify the one or more parameters of the first positioning reference signal configuration, obtaining measurements from one or more positioning reference signals based at least in part on the second assistance data, and determining the location based at least on part on measurements obtained from the one or more positioning reference signals.
    Type: Grant
    Filed: July 18, 2022
    Date of Patent: November 7, 2023
    Assignee: QUALCOMM Incorporated
    Inventors: Sven Fischer, Stephen William Edge, Alexandros Manolakos, Sony Akkarakaran
  • Patent number: 11799508
    Abstract: The present application relates to a wave limiting circuit, and a pre-calibration method, a dynamic correction method and apparatuses therefor. The circuit comprises: an LC series resonance circuit, a controller and a matching element, wherein a first end of the matching element is connected to a radio frequency circuit; a second end thereof is connected to an antenna, and a third end thereof is connected to one end of the LC series resonance circuit; and the other end of the LC series resonance circuit is connected to the controller so as to adjust parameters of the LC series resonance circuit by means of the controller.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: October 24, 2023
    Assignee: XI'AN ZHONGXING NEW SOFTWARE CO., LTD.
    Inventors: Yuanyong Li, Shougang Cheng
  • Patent number: 11743090
    Abstract: A method and an apparatus for carrier frequency-offset determination and a storage medium are provided. The method includes the following. A first carrier initial frequency-offset is obtained according to a pilot time interval and a pilot phase difference of a first carrier. A second carrier frequency-offset is obtained according to a carrier frequency-ratio of a second carrier to the first carrier and the first carrier initial frequency-offset. A first carrier frequency-offset is obtained according to the first carrier initial frequency-offset.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: August 29, 2023
    Assignee: RDA MICROELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Fengxiang Wang, Jiayi Zhuang, Liyun Luo, Yongqian Wang, Jian Cheng, Kai Li
  • Patent number: 11711121
    Abstract: A wireless communication method and a wireless communication device.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: July 25, 2023
    Assignee: SONY GROUP CORPORATION
    Inventors: Peiyao Zhao, Zhaocheng Wang, Xudong Zhu, Jinhui Chen
  • Patent number: 11711104
    Abstract: A method for detecting a beacon signal using an above-ground tracker. The tracker comprises an antenna assembly comprising a plurality of antennas. Each antenna is oriented in a different direction. During operation, if the beacon signal is interrupted due to a local noise source, transmission of the beacon signal is stopped. The tracker then detects radiation from the local noise source and the processor determines a direction from which peak ambient noise arrives at the tracker. The beacon signal is then resumed. A processor included in the tracker excludes any signals generated by the antenna assembly that are representative of radiation that arrived at the tracker from the same direction the peak ambient noise arrived at the tracker. The tracker then detects the beacon signal using the non-excluded signals.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: July 25, 2023
    Assignee: The Charles Machine Works, Inc.
    Inventor: Scott B. Cole
  • Patent number: 11694369
    Abstract: The present invention relates to a vehicle user interface device including a display configured to display a first Augmented Reality (AR) graphic object at a point in a display area corresponding to a first point, and at least one processor configured to obtain distance data between a vehicle and the first point and change the first AR graphic object based on the distance data.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: July 4, 2023
    Assignee: LG Electronics Inc.
    Inventors: Ilwan Kim, Jaeho Lee, Sunghwan Choi, Dukyung Jung
  • Patent number: 11662381
    Abstract: Aspects of the invention include a phase rotator, that is located at a built-in self-test (BIST) path of a receiver, receiving a clock signal from an on-chip clock. The phase rotator shifts the phases of the clock signal. The phase rotator transmits the shifted clock signal to a binary sequence generator, that is located at the receiver. The binary sequence generator outputs a binary sequence, where the binary sequence generator is driven by the shifted clock signal.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: May 30, 2023
    Assignee: International Business Machines Corporation
    Inventors: Nathan Ross Blanchard, Venkat Harish Nammi, Dereje Yilma, Chad Andrew Marquart, Glen A. Wiedemeier, Jeffrey Kwabena Okyere, Erik English, Christopher Steffen, Vikram B Raj, Michael Wayne Harper
  • Patent number: 11569858
    Abstract: A radio frequency device has a multifunctional tuner that stores measurements of reflection coefficient parameter in a register. The radio frequency device also has a transceiver that has a transmitter. The transceiver may detect a transmitter signal from the transmitter to an antenna in an initial tuning state and then determine whether the transmitter signal is stable. In response to the transmitter signal being stable, the transceiver may measuring the reflection coefficient parameters at the multifunctional tuner. Furthermore, the radio frequency device has a baseband controller that has a memory to store instructions and a processor to execute the instructions. The instructions cause the processor to determine an antenna impedance based on the reflection coefficient parameters, and in response to determining that the antenna impedance is greater than or less than a threshold antenna impedance, iteratively tune the antenna using the multifunctional tuner.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: January 31, 2023
    Assignee: Apple Inc.
    Inventors: Liang Han, Enrique Ayala Vazquez, Thomas E. Biedka, Hongfei Hu, Erdinc Irci, Nanbo Jin, James G. Judkins, Victor C. Lee, Matthew A. Mow, Mattia Pascolini, Ming-Ju Tsai, Yiren Wang, Yuancheng Xu, Yijun Zhou
  • Patent number: 11533028
    Abstract: A radio frequency power amplifier with harmonic control circuit as well as method for manufacturing the same are disclosed. According to an embodiment, a radio frequency power amplifier includes: a planar dielectric substrate, a first conductive layer and a second conducting layer. The first conductive layer is disposed on a first side of the planar dielectric substrate. The second conducting layer is disposed on a second side of the planar dielectric substrate. The first conductive layer has a pattern comprising one or more harmonic control circuits. The second conductive layer acts as a ground plane. The second side of the planar dielectric substrate is opposite to the first side of the planar dielectric substrate.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: December 20, 2022
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Zhancang Wang, Chen He
  • Patent number: 11444648
    Abstract: The present invention relates to a portable, affordable and user-friendly mobile RF radiation detection device. The device is composed of three major parts, namely, a sensor arrangement, a processing 5 unit, and a power supply. The sensor arrangement consists of a flexible sensor and an associated circuit element having few passive electrical components. The substrate of the sensor was made of nanoparticle treated flexible material preferably paper treated with the gold nanoparticles (AuNPs). The electrically conducting patches made 10 of conductive materials preferably silver pastes on the substrate are the key component in detecting the RF radiation from the mobile. The electrical signal generated by the RF sensor is sent to the processing unit, which further transmitted the signal to a mobile android application for displaying the result.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: September 13, 2022
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY, GUWAHATI
    Inventors: Mitradip Bhattacharjee, Dipankar Bandyopadhyay
  • Patent number: 11283153
    Abstract: The invention relates to an antenna comprising: an elongate conducting band; an antenna socket; a connection to earth; at least one first capacitive element of adjustable capacitance; and at least one first inductive element in series with the first capacitive element.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: March 22, 2022
    Assignee: STMICROELECTRONICS (TOURS) SAS
    Inventor: Benoit Bonnet
  • Patent number: 11184213
    Abstract: To reduce signal distortion, a remote terminal receives a quadrature-modulated transmitter-check signal from a user terminal. The remote terminal measures an in-phase/quadrature (I/Q) imbalance error and/or a direct current (DC) offset error in the transmitter-check signal. The remote terminal then transmits to the user terminal transmitter-correction information derived from an I/Q imbalance error or a DC offset error. The transmitter-correction information is for counteracting the I/Q imbalance error or the DC offset error at the user terminal.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: November 23, 2021
    Assignee: VIASAT, INC.
    Inventor: Branislav A. Petrovic
  • Patent number: 11075666
    Abstract: A radio communication apparatus includes: a first radio frequency subunit, configured to modulate a third analog baseband signal into a third carrier signal, and send the third carrier signal to a first switch; a second radio frequency subunit, configured to modulate a fourth analog baseband signal into a fourth carrier signal, and send the fourth carrier signal to a second switch; the first switch; the second switch; and the first duplexer shared by a first switch and a second switch, configured to receive the third carrier signal from the first switch, receive the fourth carrier signal from the second switch, filter the third carrier signal and the fourth carrier signal to combine the third carrier signal and the fourth carrier signal to obtain a second carrier aggregation signal, and input the second carrier aggregation signal to a first antenna.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: July 27, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhigang Liu, Shanqing Zeng, Shutian Yuan
  • Patent number: 10958249
    Abstract: A wireless network includes a tunable RF transmitter in wireless communication with a master node to transmit at a first slave frequency; a tunable RF receiver in wireless communication with the master node to receive at a second slave frequency; and an RF oscillator to communicate with the RF receiver and the RF transmitter an RF oscillator frequency to determine and tune the first and second slave frequencies. The RF oscillator is configured to receive calibration information including time information or frequency information, or both, from a reference node. The RF oscillator frequency of the RF oscillator is tuned based on the calibration information from the reference node to enable communication between the slave node and the master node at the tuned RF oscillator frequency.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: March 23, 2021
    Assignee: The Regents of the University of California
    Inventors: Osama Khan, Kristofer Pister
  • Patent number: 10957972
    Abstract: An audio device (e.g., hearing aid) can optionally have a radio-frequency antenna that includes an antenna structure on a flexible printed circuit board. The antenna structure can have one or metal traces disposed on the flexible printed circuit board, the antenna structure extending over an area that substantially coincides with the area of the flexible printed circuit board. The flexible printed circuit board is foldable into a three-dimensional structure that can be disposed in a folded configuration in an audio device (e.g., hearing aid).
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: March 23, 2021
    Assignee: Team IP Holdings, LLC
    Inventor: Tenvoon Wong
  • Patent number: 10873351
    Abstract: A multiplexer (1) includes: a demultiplexing circuit (11) including a common terminal (110c) and individual terminals (111 and 112); a filter (21) connected to the individual terminal (111); and a filter (22) connected to the individual terminal (112). The demultiplexing circuit (11) further includes an impedance circuit (Z1) provided in series on a path (r1) connecting the common terminal (110c) and the individual terminal (111), an impedance circuit (Z2) provided in series on a path (r2) connecting the common terminal (110c) and the individual terminal (112), and an impedance circuit (Z3) and a switch circuit (12). The switch circuit (12) connects only one of a node (N1) on the path (r1) between the impedance circuit (Z1) and the individual terminal (111) and a node (N2) on the path (r2) between the impedance circuit (Z2) and the individual terminal (112) to a ground with the impedance circuit (Z3) interposed therebetween.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: December 22, 2020
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Hirotsugu Mori
  • Patent number: 10797739
    Abstract: A method for providing nonlinear self-interference cancellation of a wireless communication device includes: receiving digital samples of an interfering signal having a first sampling rate and a corrupted victim signal having a second sampling rate; generating a kernel vector based on the interfering signal, wherein the kernel vector has terms of nonlinear self-interference; estimating the nonlinear self-interference of the corrupted victim signal using the terms of the nonlinear self-interference; and providing an estimation of a desired signal by cancelling the nonlinear self-interference from the corrupted victim signal.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: October 6, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hamed Maleki, Elina Nayebi, Pranav Dayal, Kee-Bong Song
  • Patent number: 10791557
    Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes transmitting, to a network access device, a first indication of a supported radio frequency (RF) bandwidth capability of the UE and a second indication of an RF component configuration of the UE associated with the supported RF bandwidth capability of the UE; and communicating with the network access device based at least in part on the supported RF bandwidth capability of the UE and the RF component configuration of the UE. A method for wireless communication at a network access device includes receiving the first indication and the second indication from the UE, and communicating with the UE based at least in part on the supported RF bandwidth capability of the UE and the RF component configuration of the UE.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: September 29, 2020
    Assignee: Qualcomm Incorporated
    Inventors: Wanshi Chen, Peter Gaal, Joseph Binamira Soriaga
  • Patent number: 10742254
    Abstract: A leakage compensation circuit includes a compensation digital to analog converter (DAC) and an adjustment circuit. The compensation DAC is configured to: receive a first digital signal associated with a transmitter of a transceiver; generate a compensation analog signal using the first digital signal; and provide the compensation analog signal to a receiver of the transceiver. The adjustment circuit is configured to generate the first digital signal by adjusting a second digital signal from the transmitter based on one or more adjustment parameters.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: August 11, 2020
    Assignee: Xilinx, Inc.
    Inventor: Adrian Lynam
  • Patent number: 10707947
    Abstract: A reconfigurable, multi-band hybrid beamforming architecture is introduced. The present invention is related to a Cartesian-Combining architecture to efficiently implement RF beamforming for a single downconversion chain employing direct downconversion in which the Cartesian-Combining architecture is extended to hybrid beamforming and to heterodyne downconversion.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: July 7, 2020
    Assignee: CARNEGIE MELLON UNIVERSITY
    Inventors: Jeyanandh Paramesh, Susnata Mondal
  • Patent number: 10694405
    Abstract: An apparatus and method are provided for setting a local oscillator duty ratio based on an image distortion level. A first signal is transmitted utilizing a first X-phase path of a transmitter. Further, an image distortion level is measured in connection with the first signal. Based on the measurement, a duty ratio of a local oscillator is set, for reducing a distortion in connection with a transmission of a second signal utilizing a second Y-phase path of the transmitter.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: June 23, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Hong Jiang, Wael Al-Qaq
  • Patent number: 10651957
    Abstract: An apparatus is disclosed for proximity detection using a hybrid-transceiver. In an example aspect, the apparatus includes a hybrid transceiver coupled to a first antenna and a second antenna. The hybrid transceiver is configured to generate, in a digital domain, a digital baseband radar signal. The hybrid transceiver is also configured to transmit, via the first antenna, a radio-frequency transmit signal that is derived from the digital baseband radar signal. Via the second antenna, the hybrid transceiver is configured to receive a radio-frequency receive signal, which includes a portion of the radio-frequency transmit signal that is reflected by an object. In an analog domain, the hybrid transceiver is configured to generate an analog receive signal that includes a beat frequency, which is indicative of a frequency offset between the radio-frequency transmit signal and the radio-frequency receive signal. The analog receive signal is derived from the radio-frequency receive signal.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: May 12, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Roberto Rimini, Udara Fernando, Shahin Mehdizad Taleie
  • Patent number: 10608861
    Abstract: The present invention discloses a method and system for processing frequency offset, the method includes: obtaining a current frequency offset state; determining whether the current frequency offset state is consistent with a historical effective frequency offset state; wherein the historical effective frequency offset state is a frequency offset state corresponding to a correct decoding result; if it is determined yes, performing a pre-compensation to a fine frequency offset estimation according to the historical effective frequency offset state. The present application solves the problem that inaccurate frequency offset estimation makes it unable to perform frequency offset compensate.
    Type: Grant
    Filed: September 27, 2016
    Date of Patent: March 31, 2020
    Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Yuetan Chen, Xiaojuan Zhang
  • Patent number: 10608637
    Abstract: A process and temperature variation operating condition that is globally applicable to an integrated circuit die is sensed in a core circuit region to generate a global process and temperature compensation signal. A voltage variation operating condition that is locally applicable to an input/output circuit within a peripheral circuit region of the integrated circuit die is sensed to generate a local voltage compensation signal. More specifically, the localized voltage operating condition is generated as a function of a measured difference in frequency between a first clock signal generated in the peripheral circuit region in response to a supply voltage subject to voltage variation and a second clock signal generated in the core circuit region in response to a fixed bandgap reference voltage. The operation of the input/output circuit is then altered in response to the global process and temperature compensation signal and in response to the local voltage compensation signal.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: March 31, 2020
    Assignee: STMicroelectronics International N.V.
    Inventors: Prashant Singh, Pratap Narayan Singh
  • Patent number: 10498012
    Abstract: An electronic device may be provided with wireless circuitry that includes one or more antennas and a transceiver. An integrated circuit may be coupled between the transceiver and the antenna and may include multiple tunable components such that tune the response of the antenna. The control signals may be generated by a tuning controller external to the integrated circuit. Shared control interface circuitry may be formed on the integrated circuit for interfacing between the tuning controller and each of the tunable components on the integrated circuit. The control interface circuitry may include a conductive path and decoupling circuitry that routes the control signals to corresponding control inputs on each of the tunable components. Sharing the control interface circuitry between each tunable component on the integrated circuit may minimize the space required on the integrated circuit for controlling the response of the antenna.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: December 3, 2019
    Assignee: Apple Inc.
    Inventors: James G. Judkins, Jing Zhu, Liang Han, Matthew A. Mow, Ming-Ju Tsai, Thomas E. Biedka, Victor C. Lee, Xu Han
  • Patent number: 10477552
    Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes transmitting, to a network access device, a first indication of a supported radio frequency (RF) bandwidth capability of the UE and a second indication of an RF component configuration of the UE associated with the supported RF bandwidth capability of the UE; and communicating with the network access device based at least in part on the supported RF bandwidth capability of the UE and the RF component configuration of the UE. A method for wireless communication at a network access device includes receiving the first indication and the second indication from the UE, and communicating with the UE based at least in part on the supported RF bandwidth capability of the UE and the RF component configuration of the UE.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: November 12, 2019
    Assignee: QUALCOMM Incorporated
    Inventors: Wanshi Chen, Peter Gaal, Joseph Binamira Soriaga
  • Patent number: 10470070
    Abstract: A test device for testing a power of a signal at a cell site using RFoCPRI™ is disclosed. The test device may comprise a receiver to receive a signal from a test point near a baseband unit (BBU) of a cell site. The test device may also comprise a processor to determine power of the signal. The processor may identify IQ data from the signal, determine an offset based on a noise floor determined from at least one specification of a remote radio head (RRH) of the cell site, and generate a power spectrum based on the IQ data and the offset. The processor may transmit the power spectrum to an output (e.g., display), where the power spectrum may be representative of the power of the signal between the RRH and antennas of the cell site.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: November 5, 2019
    Assignee: VIAVI SOLUTIONS INC.
    Inventors: Nick Ghaemi, Roy Anderson
  • Patent number: 10403963
    Abstract: The invention relates to an antenna comprising: an elongate conducting band; an antenna socket; a connection to earth; at least one first capacitive element of adjustable capacitance; and at least one first inductive element in series with the first capacitive element.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: September 3, 2019
    Assignee: STMICROELECTRONICS (TOURS) SAS
    Inventor: Benoit Bonnet
  • Patent number: 10374770
    Abstract: Embodiments of the present disclosure provide an uplink information demodulation method, an apparatus, and an uplink information demodulation system. and relate to the field of communications technologies. After an MCS index is selected for a terminal device, reduction processing is performed on the MCS index according to a preset MCS index reduction exponent, a reduced MCS index is indicated to the terminal device, frequency offset estimation is performed on the terminal device by using a recorded historical frequency offset value, and a PUSCH sent by the terminal device according to the reduced MCS index is demodulated after the frequency offset estimation. A frequency offset value is determined by using the prerecorded historical frequency offset value, so that the frequency offset value does not need to be determined in an existing manner of adding a DM-RS symbol to a 0.5-millisecond TTI.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: August 6, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jiafeng Shao, Sha Ma, Chaojun Li
  • Patent number: 10341079
    Abstract: The described technology provides front-end antenna architecture for wireless communication that manages multiple frequency sub-bands in a manner that results in a low insertion loss rate. Further, the components of the architecture are smaller than typical wireless communication antenna architectures, and therefore the described architecture can be accommodated in a smaller area than typical architectures without a decrease in efficiency. A matching circuit is communicatively connected to each frequency sub-band's respective signal path. When two or more sub-bands are requested for high-speed wireless communication, the matching circuits match the impedance of each sub-band with one-another. Matching the impedance allows two or more sub-bands to be used to wirelessly communicate while maintaining high efficiency. The matching circuits are disabled when only one sub-band is needed for wireless communication.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: July 2, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Chen Zhang
  • Patent number: 10313894
    Abstract: A beam steering antenna system for external antenna configurations for fixed and mobile communication devices is described where one or multiple beam steering antennas are integrated into a single external enclosure and where multiple enclosures containing beam steering antennas are used with a single communication device. Where multiple external enclosures are used with a single communication system such as a WLAN access point the beam steering antenna system provides an electrical means of optimizing antenna system and communication link performance as compared to mechanical means such as antenna enclosure positioning or orientation. Radiation mode selection for 2.4 GHz and 5 GHz antennas integrated into an external enclosure on a WLAN access point allows for independent optimization of the antenna systems for the two frequency bands without requiring antenna movement or positioning.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: June 4, 2019
    Assignee: Ethertronics, Inc.
    Inventors: Laurent Desclos, Abhishek Singh, Jeffrey Shamblin
  • Patent number: 10178455
    Abstract: An electronic device including a sound output module and a housing for the electronic device are provided. The electronic device includes a front case including a display unit, a rear case coupled to the front case and including a mounting space of a battery, a speaker module configured to form at least one side wall of the mounting space of the battery, and a battery cover configured to cover at least the mounting space of the battery.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: January 8, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Heecheul Moon, Jongchul Choi
  • Patent number: 10091039
    Abstract: A phase detection system includes first and second phase mixing circuits in signal communication with a signal phase adjuster module. The first mixing circuit generates a first digital modulated frequency signal based on an input signal and a first reference phase signal. The second mixing circuit generates a second digital modulated frequency signal based on the input signal and a second reference phase signal, which phase shifted with respect to the first reference phase signal. The phase detection system further includes a phase identification (ID) module in signal communication with the first mixing circuit and the second mixing circuit. The phase ID module generates a phase signal based on the first digital modulated frequency signal and the second digital modulated frequency signal. The phase signal indicates a phase of the input signal.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: October 2, 2018
    Assignee: RAYTHEON COMPANY
    Inventors: Benjamin Dolgin, Gary M. Graceffo, Andrew Kowalevicz
  • Patent number: 9692394
    Abstract: An integrated circuit comprising, a voltage regulator circuit and a programmable low power high-speed current steering logic (LPHCSL) driver circuit coupled to a common supply voltage. The voltage regulator circuit includes a native source follower transistor having a negative threshold voltage to provide more headroom for the voltage regulator to operate. The LPHCSL driver circuit includes a plurality of selectable output driver legs and a plurality of programmable resistors. The ability to use a common supply voltage and the ability to select multiple output impedance drivers reduces the die area without increasing the complexity of the integrated circuit.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: June 27, 2017
    Assignee: INTEGRATED DEVICE TECHNOLOGY, INC.
    Inventors: Vikas Agrawal, Feng Qiu
  • Patent number: 9651386
    Abstract: An apparatus and method for calculating a distance between vehicles to receive position movement information of a subject vehicle and position movement information of an object vehicle from a global positioning system and calculate a distance between the moved subject vehicle and the moved object vehicle based on a position movement distance of the subject vehicle and a position movement distance of the object vehicle at predetermined time as the sum of a vector when calculating the position movement information of the subject vehicle and the position movement information of the object vehicle over time using a dead reckoning formula.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: May 16, 2017
    Assignee: MANDO CORPORATION
    Inventor: Man-Bok Park
  • Patent number: 9615744
    Abstract: In general, this disclosure is directed to a mixer amplifier that can be utilized within a chopper stabilized instrumentation amplifier. The chopper stabilized instrumentation amplifier may be used for physiological signal sensing, impedance sensing, telemetry or other test and measurement applications. In some examples, the mixer amplifier may include a current source configured to generate a modulated current at a modulation frequency for application to a load to produce an input signal, an amplifier configured to amplify the input signal to produce an amplified signal, and a demodulator configured to demodulate the amplified signal at the modulation frequency to produce an output signal indicating an impedance of the load.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: April 11, 2017
    Assignee: Medtronic, Inc.
    Inventors: Timothy J. Denison, Wesley A. Santa
  • Patent number: 9559415
    Abstract: The disclosure discloses a method and device for realizing Specific Absorption Rate (SAR) control, in both of which phase shifters can be provided on a metal ground edge of a wireless terminal, and an induced current of the metal ground edge can be altered by applying the phase shifters, so as to reduce an antenna near field radiation characteristic of an SAR. The method and device of the disclosure can alter current phase and amplitude distribution of the metal ground without affecting the reception and transmission performance of the terminal, so as to reduce a local SAR peak value and lessen the harm of radiation to human bodies. Furthermore, the disclosure does not require any major change in a structure, circuit, and, antenna of a designed model, and can save space. The disclosure bears great flexibility and adaptability in an application, thereby realizing the objective of miniaturized design of the wireless terminal.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: January 31, 2017
    Assignee: ZTE CORPORATION
    Inventor: Lu Zhang
  • Patent number: 9479214
    Abstract: A wideband radio frequency (RF) interference cancellation system includes an electronic channel canceller configured to split an electronic reference signal output from an electronic transmitting element into a plurality of band signals. At least one electronic band pass filter is configured to receive a respective band signal delivered to a respective channel. The wideband RF interference cancellation system further includes at least one electronic tunable cancellation element configured to tune the respective channel such that reflections are canceled before being input to receiving element.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: October 25, 2016
    Assignee: RAYTHEON COMPANY
    Inventors: Kenneth M. Webb, Charles A. Hall, Tina P. Srivastava, Anthony T. McDowell
  • Patent number: 9231650
    Abstract: A system that incorporates teachings of the subject disclosure may include, for example, a method for identifying a spectral region in a radio frequency spectrum for initiating a communication session having a transmission link and a reception link, determining a correlation factor from signals measured in the spectral region, detecting according to the correlation factor a foreign communication signal in the spectral region, generating coefficient data to prevent interference with the foreign communication signal while transmitting in the transmission link, filtering a first signal for transmission in the transmission link according to the coefficient data to generate a filtered signal, and causing a transmission of the filtered signal which prevents interference with the foreign communication signal while transmitting in the transmission link. Other embodiments are disclosed.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: January 5, 2016
    Assignee: ISCO INTERNATIONAL, LLC
    Inventors: Amr Abdelmonem, Sean S. Cordone
  • Patent number: 9160386
    Abstract: Systems and methods are disclosed to implement non-linear interference cancellation (NLIC) across chips or dies in communication systems to cancel or mitigate self-jamming interference. A victim transceiver may receive an analog baseband transmit (Tx) signal from an aggressor transceiver. The analog baseband Tx signal may be tapped from a digital analog converter (DAC) of the aggressor transceiver. Alternatively, the analog baseband Tx signal may be generated by the aggressor transceiver using an auxiliary down-conversion and filtering stage. The victim transceiver may receive a composite baseband Rx signal from the victim transceiver front-end. The composite baseband Rx signal includes the desired Rx signal and an interference signal. The victim transceiver may sample the analog baseband Tx signal to generate a digital signal replica of the analog baseband Tx signal for the NLIC operation to cancel or mitigate the interference signal present in the composite baseband Rx signal.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: October 13, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Roberto Rimini, Jibing Wang, Geert Arnout Awater
  • Patent number: 9154278
    Abstract: A mobile communications device having an LTE radio technology and at least one other technology (for example, Bluetooth or Wi-Fi) determines whether transmissions using the other radio technology causes, or is likely to cause interference in reception of LTE signals. If such interference exists or is likely, then a signal indicating interference is sent to the LTE base station, which can take action to try to mitigate or prevent such interference. The mobile communications device can have a timer so that the interference indicating signal is only sent periodically, either at regular intervals, or whenever the interference is determined to exist after the timer period has expired. In some cases, a signal indicating that the interference level has reduced can be sent, again either at regular intervals, to whenever the interference level changes.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: October 6, 2015
    Assignee: NEC CORPORATION
    Inventor: Vivek Sharma
  • Patent number: 9031516
    Abstract: A transceiver includes an antenna, an impedance adjustment device, an RF (Radio Frequency) front-end circuit, a storage device, and a processor. The antenna receives an RF signal. The impedance adjustment device is coupled to the antenna, and includes a plurality of branch circuit with different impedance values and a switch module. The processor is coupled to the RF front-end circuit and controls the switch modules. In a comparison mode, the switch module selects to connect to the branch circuits individually, and the processor detects each RSSI (Received Signal Strength Indications) value corresponding to the branch circuit and records all of the RSSI values to the storage device respectively. In the comparison mode, the processor further compares the RSSI values to for highest one. Finally, the switch module selects the branch circuit corresponding to the highest RSSI value as a transmission branch.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: May 12, 2015
    Assignee: Accton Technology Corporation
    Inventor: Wen-Chi Wang
  • Publication number: 20150118973
    Abstract: A system that incorporates the subject disclosure may include, for example, a circuit for determining a magnitude difference between a first signal supplied to an antenna and a second signal radiated by the antenna, determining a phase difference between the first signal supplied to the antenna and the second signal radiated by the antenna, detecting an offset in an operating frequency of the antenna based on the magnitude difference and the phase difference, and adjusting the operating frequency of the antenna to mitigate the offset in the operating frequency of the antenna. Other embodiments are disclosed.
    Type: Application
    Filed: April 30, 2014
    Publication date: April 30, 2015
    Applicant: Skycross, Inc.
    Inventors: Mark T. Montgomery, Frank M. Caimi, Duane Rabe, Li Chen, Mark W. Kishler
  • Publication number: 20150118974
    Abstract: A system that incorporates the subject disclosure may include, for example, a circuit for obtaining a desired bandwidth of operation of the antenna structure, adjusting a bandwidth of the antenna to achieve the desired bandwidth of operation of the antenna structure, and tuning the antenna to a new resonant frequency to accommodate transmitting or receiving RF signals at a desired band of operation. The antenna at the new resonant frequency is at least approximately at the desired bandwidth of operation of the antenna structure. Other embodiments are disclosed.
    Type: Application
    Filed: August 25, 2014
    Publication date: April 30, 2015
    Inventors: Mark T. Montgomery, Frank M. Caimi
  • Publication number: 20150118972
    Abstract: A system that incorporates the subject disclosure may include, for example, a circuit for measuring from a near field sensor a first signal representing radiated energy from an antenna structure, measuring from a probe a second signal supplied to the antenna structure, determining a phase differential from a first phase of the first signal and a second phase of the second signal, detecting a frequency offset of the antenna structure based on the phase differential, and adjusting an operating frequency of the antenna structure to mitigate the frequency offset. Other embodiments are disclosed.
    Type: Application
    Filed: April 30, 2014
    Publication date: April 30, 2015
    Applicant: Skycross, Inc.
    Inventors: Mark T. Montgomery, Frank M. Caimi, Duane Rabe
  • Patent number: 8982974
    Abstract: Receiver synchronization techniques (RST), contributing more accurate synchronization of receiver clock to OFDM composite frame combined with much faster acquisition time and better stability of the receiver clock, and phase and frequency recovery techniques, comprising a software controlled clock synthesizer (SCCS) for high accuracy phase & frequency synthesis producing synchronized low jitter clock from external time referencing signals or time referencing messages wherein SCCS includes a hybrid PLL (HPLL) enabling 1-50,000 frequency multiplication with very low output jitter independent of reference clock quality.
    Type: Grant
    Filed: February 10, 2013
    Date of Patent: March 17, 2015
    Inventor: John W Bogdan
  • Patent number: 8983403
    Abstract: A frequency compensation device, applicable to a user equipment (UE) communicating with a first base station (BS), includes a receiving module and a transmitting module. The receiving module has an offset detection unit for performing following steps. A first signal from the first BS at a first receiving frequency is received. A first transmitting frequency where the first BS transmits the at least one first signal is read. A difference between the first transmitting frequency and the first receiving frequency is calculated and used as a frequency difference. The transmitting module is for performing following steps. A BS parameter corresponding to the first BS is obtained. A frequency compensation value according to the BS parameter is calculated. A second transmitting frequency according to the frequency compensation value corresponding to the first BS is compensated. A second signal to the first BS at the compensated second transmitting frequency is sent.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: March 17, 2015
    Assignee: Gemtek Technology Co., Ltd.
    Inventors: Fu-Ming Yeh, You-Chang Shih
  • Patent number: 8938238
    Abstract: Transmissions by a first access point (e.g., a femto cell) are restricted upon detecting an access terminal in the vicinity of the first access point in the event the access terminal is communicating with a second access point (e.g., a macro cell). Upon detection of such an access terminal, the access terminal restricts transmission (e.g., beacon transmission) on a downlink carrier frequency on which the access terminal is actively receiving information from the second access point. This restriction of transmission by the access point may involve, for example, temporarily reducing transmit power, reducing the periodicity of transmission, or ceasing transmission.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: January 20, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Mehmet Yavuz, Leonard Henry Grokop, Chirag Sureshbhai Patel, Sanjiv Nanda
  • Patent number: 8934853
    Abstract: Embodiments of the present disclosure use shared oscillator for cellular communications and location detection in a communication device. The communications device estimates a frequency offset of one of its subsystems. The communications device determines a frequency offset that results from drifting of this shared oscillator, typically caused by aging and/or changes in temperature, voltage, humidity, pressure, and/or vibration to provide some examples, from the frequency offset this subsystem. The communications device provides various compensation parameters to its various subsystems to compensate for the frequency offset that results from drifting of the oscillator.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: January 13, 2015
    Assignee: Broadcom Corporation
    Inventors: Robert Lorenz, Kamesh Medapalli, Frank Van Diggelen, Charlie Abraham