With Control Of Input Electrode Or Gain Control Electrode Bias Patents (Class 330/129)
  • Patent number: 10700717
    Abstract: A band selection switch circuit for an amplifier with an impedance matching circuit includes a band selection switch and an impedance compensation circuit. The band selection switch includes a signal port switch configured to selectively connect to one of a common transmit port, transmit and receive (TxRx) ports, and receive ports, and an impedance port switch configured to selectively connect the common transmit port and one of the receive ports and an impedance port. The impedance compensation circuit includes an impedance element connected to the impedance port.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: June 30, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Geun Yong Lee, Hyeon Seok Hwang, Sun Hong Kim
  • Patent number: 10666213
    Abstract: The invention relates to an amplification circuit (100), comprising: a VGA (2), an AGC loop (10) for automatically controlling the gain of the VGA (2), a switching circuit (14) for switching between an AGC mode, in which the gain of the VGA (2) is automatically controlled by an output signal of the AGC loop (10) and a manual gain control, MGC, mode, in which the gain of the VGA (2) can be manually controlled by an input signal, and a read/write circuit (30) with a contact (31) for connection to a peripheral system, wherein the read/write circuit (30) is configured, in the MGC mode, to provide the input signal from the contact (31) via a write-mode path (32) to the VGA (2), and, in the AGC mode, to provide the output signal of the AGC loop (10) via a read-mode path (33) on the contact (31).
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: May 26, 2020
    Assignee: IHP GMBH—INNOVATIONS FOR HIGH PERFORMANCE MICROELECTRONICS/LEIBNIZ-INSTITUT FUR INNOVATIVE MIKROELEKTRONIK
    Inventors: Ahmed Awny, Alexey Balashov, Dietmar Kissinger
  • Patent number: 10666366
    Abstract: An electronic device may include a feedback circuit that may determine an error of a first signal to be transmitted to a second electronic device. The electronic device may also include a transceiver that may adjust the first signal based on the error and send the adjusted first signal to the second electronic device. The electronic device may also include a coupler circuitry configured to route a second signal received from the second electronic device or a third electronic device to the feedback circuit, such that the feedback circuit may determine one or more properties associated with the second signal.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: May 26, 2020
    Assignee: Apple Inc.
    Inventors: Wassim El-Hassan, Yingjie Xu
  • Patent number: 10615757
    Abstract: High bandwidth envelope trackers are provided herein. In certain embodiments, an envelope tracking system for a power amplifier includes a switching regulator that operates in combination with a high bandwidth amplifier to generate a power amplifier supply voltage for the power amplifier based on an envelope of a radio frequency (RF) signal amplified by the power amplifier. The high bandwidth amplifier includes an output that generates an output current for adjusting the power amplifier supply voltage, a first input that receives a reference signal, and a second input that receives an envelope signal indicating the envelope of the RF signal. The second input has lower input impedance than the first input to provide a rapid transient response and high envelope tracking bandwidth.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: April 7, 2020
    Assignee: Skyworks Solutions, Inc.
    Inventors: Florinel G. Balteanu, Serge Francois Drogi, Sabah Khesbak, Hardik Bhupendra Modi
  • Patent number: 10594142
    Abstract: A power distribution and control module includes a digital data processor and associated memory module operating an energy management program or schema and a battery charging manager program thereon. The energy management schema is operable to determine an instantaneous configuration of the power and distribution and control module, to determine total instantaneous input power available, total instantaneous power demand by connected power loads and to allocate a portion of the input power to power the loads. Thereafter any unallocated power is allocated to charge rechargeable batteries using allocation criteria that are situationally variable.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: March 17, 2020
    Assignee: Galvion Soldier Power, LLC
    Inventors: David N. Long, Seth M. Dziengeleski, Gregory D. McConnell
  • Patent number: 10580892
    Abstract: A transistor circuit includes a transistor having a gate terminal and first and second conduction terminals, a first circuit configured to convert an AC input signal of the transistor circuit to a gate bias voltage and to apply the gate bias voltage to the gate terminal of the transistor, a second circuit configured to convert the AC input signal of the transistor circuit to a control voltage, and a switching circuit configured to apply a first voltage to the first conduction terminal of the transistor in response to the control voltage.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: March 3, 2020
    Assignee: MACOM Technology Solutions Holdings, Inc.
    Inventors: Benone Achiriloaie, Eric Hokenson
  • Patent number: 10530315
    Abstract: Embodiments of the disclosure relate to calibrating a power amplifier. The power amplifier calibration circuit is configured to provide a plurality of bias signal combinations each including a respective first bias signal and a respective second bias signal to the power amplifier. Power amplifier performance parameters for each of the bias signal combinations can be measured and provided to a control circuit in the power amplifier calibration circuit. The control circuit is configured to rank the measured power amplifier performance parameters based on predefined ranking criteria and determines a selected bias signal combination that can optimize the power amplifier performance parameters of the power amplifier. As such, it is possible to calibrate the power amplifier to operate at a balanced performance level, thus helping to improve radio frequency (RF) coverage and performance of the remote unit in a wireless distribution system (WDS).
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: January 7, 2020
    Assignee: Corning Optical Communications LLC
    Inventors: Amit Gutman, Shlomi Kaduri, Roi Yosy Ziv
  • Patent number: 10509624
    Abstract: Audio content in a single-bit audio stream can be reproduced at a transducer by mapping the single-bit audio stream to symbols in a multi-bit audio stream. Volume control may be implemented, in part, in the digital domain and, in part, in the analog domain. In the digital domain, when converting the single-bit audio stream to a plurality of symbols, the plurality of symbols is selected based, at least in part, on audio content of the single-bit audio stream and a desired volume level. In the analog domain, when converting an analog current signal output from a current-steering DAC processing the plurality of symbols to an analog voltage signal, an analog gain value may be selected based, at least in part, on the desired volume level.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: December 17, 2019
    Assignee: Cirrus Logic, Inc.
    Inventors: Bruce Duewer, Dylan Hester, Shafagh Kamkar
  • Patent number: 10505770
    Abstract: A signal processing device according to an embodiment includes a plurality of signal processing units and a pseudo signal generating unit. The plurality of signal processing units are provided in a plurality of reception antennas which receive reflection signals of a transmission signal reflected on an object, and perform signal processing in parallel on beat signals which are generated based on the transmission signal and the reflections signals. The pseudo signal generating unit generates a pseudo signal imitating the beat signal, and inputs the pseudo signal as a target of the signal processing into the plurality of signal processing units in parallel.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: December 10, 2019
    Assignees: FUJITSU TEN LIMITED, ASAHI KASEI MICRODEVICES CORPORATION, DENSO CORPORATION
    Inventors: Daisuke Enomoto, Kazuhiro Komatsu, Kenta Iwai, Takeshi Tanaka, Minoru Uehara, Tsuyoshi Sakakibara, Naoto Kusakawa, Hideki Kitagawa
  • Patent number: 10484024
    Abstract: A transmission unit includes: a power amplification module that amplifies the power of an input signal and outputs an amplified signal; and a power supply module that supplies a power supply voltage to the power amplification module on the basis of a first control signal corresponding to the band width of the input signal. On the basis of the first control signal, the power supply module varies the power supply voltage in accordance with the amplitude level of the input signal in the case where the band width of the input signal is a first band width and varies the power supply voltage in accordance with the average output power of the power amplification module in the case where the band width of the input signal is a second band width that is larger than the first band width.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: November 19, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Kiichiro Takenaka
  • Patent number: 10476437
    Abstract: A multimode voltage tracker circuit is provided. The multimode voltage tracker circuit is configured to generate a modulated voltage for amplifying a radio frequency (RF) signal(s), which may be modulated in a wide range of modulation bandwidth. In one non-limiting example, the multimode voltage tracker circuit can be configured to operate in a low modulation bandwidth (LMB) mode to generate an average power tracking (APT) modulated voltage for amplifying the RF signal(s) when the RF signal(s) is modulated in a lower modulation bandwidth (e.g., <50 KHz). As such, the multimode voltage tracker circuit can be adapted to support lower bandwidth communications in an Internet-of-Things (IoT) network with improved efficiency, stability, and performance.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: November 12, 2019
    Assignee: Qorvo US, Inc.
    Inventors: Manbir Singh Nag, Michael R. Kay, Nadim Khlat
  • Patent number: 10447206
    Abstract: An integrated circuit includes a first high-pass filter having an input coupled to receive a first signal and an output coupled to a first input of a first differential pair of transistors. A second high-pass filter includes an input coupled to receive a second signal and an output coupled to a second input of the first differential pair of transistors. The second signal may be a complementary signal of the first signal. A second differential pair of transistors includes control electrodes coupled to a first voltage supply terminal. A boost circuit is coupled between the second differential pair of transistors and the first voltage supply terminal. A low-pass filter is coupled between the first differential pair of transistors and the second differential pair of transistors.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: October 15, 2019
    Assignee: NXP USA, INC.
    Inventors: Jaeyoung Lee, Nader Rohani
  • Patent number: 10440162
    Abstract: A mobile terminal, a housing component and a manufacturing method thereof are provided. The housing component of the mobile terminal includes a conductive housing and at least one conductive component. The conductive housing is provided with at least one slot. The at least one slot is configured to divide the conductive housing into a plurality of regions, and is filled with an insulating layer. The at least one conductive component is attached to the conductive housing and across the at least one slot, so as to electrically connect the plurality of regions together. The housing component of the mobile terminal realizes grounding and conduction of an antenna through electrically connecting the plurality of regions of the conductive housing using the at least one conductive component.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: October 8, 2019
    Assignee: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
    Inventors: Tao Zhang, Wenfeng Sun
  • Patent number: 10404213
    Abstract: A method for controlling a supply voltage of a power amplifier, and an electronic device are provided. The method includes acquiring a state of an envelope of a to-be-amplified signal, where the state of the envelope includes a rising edge and a falling edge; acquiring a first voltage corresponding to the envelope when the state of the envelope is the falling edge, and controlling the supply voltage of the power amplifier according to the first voltage. The method also includes acquiring a second voltage corresponding to a maximum peak value of the to-be-amplified signal in a first preset time when the state of the envelope is the rising edge, and controlling, according to the second voltage, the supply voltage of the power amplifier in the first preset time.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: September 3, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Meifang Zhong, Yanbiao Luo, Konggang Wei
  • Patent number: 10367535
    Abstract: A Cartesian loop circuit includes a reference signal amplifier, a forward path coupled to the reference signal amplifier, a feedback path coupled to the forward path, and a controller. The forward path includes an up-mixer to up mix a forward path signal to a radio frequency signal. The feedback path includes a down-mixer to down mix a feedback signal to a frequency of a baseband reference signal inputted to the forward path. The feedback path provides the down-mixed feedback signal to the forward path. The controller is to perform power control at a low power by controlling a gain of the reference signal amplifier and is to perform power control at a high power by controlling a gain of the down-mixer. At the high power, the controller may perform power control by further controlling the gain of the up-mixer.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: July 30, 2019
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Nir Corse, Mark Rozental, Yaniv Salem
  • Patent number: 10326284
    Abstract: A power distribution and control module includes a digital data processor and associated memory module operating an energy management program or schema and a battery charging manager program thereon. The energy management schema is operable to determine an instantaneous configuration of the power and distribution and control module, to determine total instantaneous input power available, total instantaneous power demand by connected power loads and to allocate a portion of the input power to power the loads. Thereafter any unallocated power is allocated to charge rechargeable batteries using allocation criteria that are situationally variable.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: June 18, 2019
    Assignee: Revision Military Ltd.
    Inventors: David N. Long, Seth M. Dziengeleski, Gregory D. McConnell
  • Patent number: 10321538
    Abstract: The present disclosure discloses a protective circuit for an output terminal capacitor of a light-emitting diode (LED) driver, and a method for providing the protective circuit. The protective circuit is connected to two ends of the output terminal capacitor and includes a switching element, a voltage dividing unit and a one-way conduction unit. The switching element is in parallel connection with the output terminal capacitor, the one-way conduction unit is connected between the switching element and the output terminal capacitor, the switching element is switched on when a voltage exceeds a threshold so as to establish a short circuit between two ends of the output terminal capacitor and prevent an excessively large voltage from being applied to the output terminal capacitor, and the one-way conduction unit allows a current to flow across the output terminal capacitor from the protective circuit by a one-way conduction.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: June 11, 2019
    Assignee: OPPLE LIGHTING CO., LTD.
    Inventor: Xianjiang Diao
  • Patent number: 10305518
    Abstract: A Cartesian loop circuit includes a reference signal amplifier, a forward path coupled to the reference signal amplifier, a feedback path coupled to the forward path, and a controller. The forward path includes an up-mixer to up mix a forward path signal to a radio frequency signal. The feedback path includes a down-mixer to down mix a feedback signal to a frequency of a baseband reference signal inputted to the forward path. The feedback path provides the down-mixed feedback signal to the forward path. The controller is to perform power control at a low power by controlling a gain of the reference signal amplifier and is to perform power control at a high power by controlling a gain of the down-mixer. At the high power, the controller may perform power control by further controlling the gain of the up-mixer.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: May 28, 2019
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Nir Corse, Mark Rozental, Yaniv Salem
  • Patent number: 10291188
    Abstract: In accordance with an embodiment, method for generating an output signal of an amplifier having an increased signal to noise ratio includes receiving a first signal at an input terminal of the amplifier that is not part of a differential input. The input terminal of the amplifier is a sole input terminal of the amplifier. The first signal has an externally received portion and a feedback portion. A first amplified signal is generated at an output of the amplifier. High frequency components of the first amplified signal may be filtered. A feedback signal is generated at the sole input terminal of the amplifier in response to the first output signal.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: May 14, 2019
    Assignee: Semiconductor Components Industries, LLC
    Inventor: Takashi Tokano
  • Patent number: 10278143
    Abstract: According to certain embodiments, a method of operating an electronic device includes identifying an RSSI value and setting a power amplifier to a first power amplification mode or a second power amplification mode based on the identified one or more RSSI value, wherein the first power amplification mode and the second power amplification mode supply different supply voltages to the power amplifier.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: April 30, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sangho Kam
  • Patent number: 10267872
    Abstract: A device for streaming magnetic flux data generated by an electrical generator for a power plant. The device includes a flux probe located on the generator to enable detection of a magnetic flux of the generator. The device also includes a computer having an interface, wherein the computer includes an analog-to-digital converter. In addition, the device includes a calibration circuit attached to the flux probe by a first cable and the interface by a second cable. The calibration circuit measures a resistance of the second cable and a voltage of the flux probe wherein ends of the second cable are shorted when measuring the cable resistance and the flux probe voltage. A gain is determined based on the cable resistance and flux probe voltage to provide a suitable input voltage at the interface to deliver the magnetic flux data to the computer.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: April 23, 2019
    Assignee: SIEMENS ENERGY, INC.
    Inventor: Edward David Thompson
  • Patent number: 10265117
    Abstract: A method for controlling a waveform shape of a motional branch current in an ultrasonic transducer of a surgical device. The method may comprise generating a transducer drive signal by selectively recalling, using a direct digital synthesis (DDS) algorithm, drive signal waveform samples stored in a look-up table (LUT), generating samples of current and voltage of the transducer drive signal when the transducer drive signal is communicated to the surgical device, determining samples of the motional branch current based on the current and voltage samples, a static capacitance of the ultrasonic transducer and a frequency of the transducer drive signal, comparing each sample of the motional branch current to a respective target sample of a target waveform to determine an error amplitude, and modifying the drive signal waveform samples stored in the LUT such that an amplitude error between subsequent samples of the motional branch current and respective target samples is reduced.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: April 23, 2019
    Assignee: Ethicon LLC
    Inventors: Eitan T. Wiener, Jeffrey L. Aldridge, James R. Giordano, Foster B. Stulen, Joseph A. Brotz, John E. Hein
  • Patent number: 10257015
    Abstract: A polar transmitter includes an amplitude path comprising an amplitude signal that corresponds to an amplitude of a vector sum of an in-phase input signal and a quadrature input signal; a phase path comprising a phase modulator configured to phase-modulate a phase signal that corresponds to the phase of the vector sum of the in-phase input signal and the quadrature input signal; a digital power amplifier (DPA) configured to amplify the phase-modulated (PM) input signal based on the amplitude signal; a tunable matching network coupled to an output of the DPA and configured to adjust a load impedance of the DPA; and a controller configured to adjust the matching network based on a look-up table with respect to amplitude and frequency information, where the look-up table indicates a plurality of optimal operation modes of the matching network for specific combinations of amplitude and frequency information.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: April 9, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xun Luo, Jian Liang
  • Patent number: 10181820
    Abstract: Disclosed herein are power amplification systems that are dynamically biased based on a signal indicative of an envelope of the signal being amplified. The power amplification systems include a power amplifier configured to amplify an input radio-frequency (RF) signal to generate an output RF signal when biased by a biasing signal. The power amplification systems also include a bias component configured to generate the biasing signal based on an envelope signal indicative of an envelope of the input RF signal. The biasing signal can improve or enhance the linearity of the power amplification systems.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: January 15, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventors: Florinel G. Balteanu, Paul T. DiCarlo, Boshi Jin, Serge Francois Drogi
  • Patent number: 10164593
    Abstract: Embodiments of power detector circuits and related methods to compensate for undesired DC offsets generated within power detector circuits are disclosed. Input signals having input frequencies are received and converted to a magnitude signal, and reference signals are also generated. The magnitude signal may include a DC component proportional to a power of the input signal along with undesired DC offsets. The reference signal may include a DC component proportional to a power of at least one input reference signal along with undesired DC offsets. To compensate for errors introduced by the DC offsets, a programmable digital input signal is determined in a calibration mode and then applied to reference circuitry in a normal mode to compensate for the DC offsets. For the calibration mode, a difference between the magnitude signal and the reference signal is compared to a threshold value to generate a power detection output signal.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: December 25, 2018
    Assignee: Silicon Laboratories Inc.
    Inventors: Navin Harwalkar, John M. Khoury
  • Patent number: 10164668
    Abstract: A mobile phone device, a radio frequency transceiver circuit and an impedance adjusting device. The present invention discloses a mobile phone device. The mobile phone device comprises a baseband processor, an antenna, a duplexer and a radio frequency transceiver circuit. The antenna is used to receive and send radio frequency signals. The duplexer is electrically connected to the antenna. The radio frequency transceiver circuit is connected to the baseband processor and the duplexer, respectively. The radio frequency transceiver circuit comprises a first power amplifier and an impedance adjusting device. The first power amplifier has a first output impedance.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: December 25, 2018
    Assignee: Intel Corporation
    Inventors: Jinfeng Zhou, Zhichong Chen
  • Patent number: 10158419
    Abstract: In one embodiment, a method includes receiving two or more input radio-frequency (RF) signals, each input RF signal being received on a separate input channel and having a different frequency range. The method also includes amplifying each input RF signal of the two or more input RF signals separately to produce two or more respective amplified RF signals. The method further includes aggregating the two or more amplified RF signals into one aggregated communication signal using a passive waveguide multiplexer, where the aggregated communication signal is an E-band communication signal having a frequency range within approximately 71-76 GHz or approximately 81-86 GHz. The method also includes transmitting the aggregated communication signal.
    Type: Grant
    Filed: April 27, 2016
    Date of Patent: December 18, 2018
    Assignee: Facebook, Inc.
    Inventor: Abhishek Tiwari
  • Patent number: 10129825
    Abstract: Processes, methods and circuits for improving battery life by reducing the battery power-drain of battery-powered devices using wireless transceivers is disclosed. Embodiments of the present invention provide for dynamically changing the bias current, impedance, and gain, either separately or in combination, during circuit operation to optimize or to reduce power dissipation. The dynamic variations may be implemented by varying the value of a resistance and/or a capacitance by opening switches across one or more portions of the resistance. Also, the dynamic variations may include setting any of the gain, bias current, or impedance parameters of the receiver circuit in between a high and low level, followed by adjusting the parameter up or down in response to a desired signal and an interferer signal.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: November 13, 2018
    Assignee: Theta IP, LLC
    Inventor: Yannis Tsividis
  • Patent number: 10122322
    Abstract: Dynamic error vector magnitude correction for radio-frequency amplifiers. In some embodiments, a radio-frequency amplification system can include an amplifier configured to receive an input signal through an input path and generate an amplified signal, a power adjustment component implemented along the input path and configured to adjust power of the input signal, and a control circuit configured to provide a control signal to the power adjustment component based on an operating condition associated with the amplifier, such that an impact of the operating condition on the amplifier is compensated by the adjusted power of the input signal.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: November 6, 2018
    Assignee: Skyworks Solutions, Inc.
    Inventors: Lui Lam, Zhiguo Lai, Andrew Raymond Chen
  • Patent number: 10109999
    Abstract: An envelope tracking power supply (ET PS) transmission line switch can be operable between an ET PS and a radio frequency (RF) power amplifier (PA). The ET PS transmission line switch assembly can include a quarter wavelength (¼?) transmission line configured for high impedance at a specified low RF and a switch coupled to a specified point on the quarter wavelength transmission line to generate a high frequency quarter wavelength transmission line when the switch is toggled. The quarter wavelength transmission line is configured to be coupled to a voltage output of the ET PS and a RF output of the RF PA. The high frequency quarter wavelength transmission line is configured for high impedance at a specified high RF, and the specified high RF is higher than the specified low RF.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: October 23, 2018
    Assignee: Raytheon Company
    Inventor: Mark B. Walker
  • Patent number: 10103921
    Abstract: A method for transmitting a signal is described, wherein the method has transforming a signal into a frequency domain to obtain a spectrum, forming a filtered spectrum according to a filter spectrum and occupying a set of subcarriers of a frequency domain representation of an Orthogonal Frequency Division Multiplex (OFDM) signal with the filtered spectrum. A temporary signal is obtained by transforming the frequency domain representation of the OFDM signal into a time domain. The temporary signal is subjected to a phase modulation.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: October 16, 2018
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Volker Jungnickel, Liane Grobe
  • Patent number: 10097148
    Abstract: Provided is a power amplification module that includes: a first amplification circuit that amplifies a first signal and outputs the amplified first signal as a second signal; a second amplification circuit that amplifies the second signal and outputs the amplified second signal as a third signal; and a feedback circuit that re-inputs/feeds back the second signal outputted from the first amplification circuit to the first amplification circuit as the first signal. The operation of the first amplification circuit is halted and the first signal passes through the feedback circuit and is outputted as the second signal at the time of a low power output mode.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: October 9, 2018
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventor: Shota Ishihara
  • Patent number: 10079637
    Abstract: A very small aperture terminal (VSAT) installation tool is provided having the ability to measure cable loss along an interfacility link (IFL) between an outdoor unit and an indoor unit of the VSAT. Radio frequency (RF) signals can be transmitted from the indoor unit to the outdoor unit, where the RF signals are intercepted along the IFL prior to reaching the outdoor unit, and the output power is determined. The determined output power is compared to an expected output power at the indoor unit. The delta between the determined output power and the expected output power can be used to adjust the power of the indoor unit such that the outdoor unit can operate without reaching its compression point.
    Type: Grant
    Filed: July 18, 2016
    Date of Patent: September 18, 2018
    Assignee: Hughes Network Systems, LLC
    Inventors: Emanuel Girard Harrington, George Eapen, Yong Kang Yuan
  • Patent number: 10063203
    Abstract: Embodiments of power detector circuits and related methods to compensate for undesired DC offsets generated within power detector circuits are disclosed. Input signals having input frequencies are received and converted to a magnitude signal, and reference signals are also generated. The magnitude signal may include a DC component proportional to a power of the input signal along with undesired DC offsets. The reference signal may include a DC component proportional to a power of at least one input reference signal along with undesired DC offsets. To compensate for errors introduced by the DC offsets, a DC offset calibration signal or a gain are determined in a calibration mode and then applied in a normal mode to compensate for the DC offsets. For the calibration mode, a difference between the magnitude signal and the reference signal is compared to a threshold value to generate a power detection output signal.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: August 28, 2018
    Assignee: Silicon Laboratories Inc.
    Inventors: Navin Harwalkar, John M. Khoury
  • Patent number: 10038992
    Abstract: Devices, systems, and method are provided for wireless coded communication (WCC) devices, which are configured for wireless communication with other devices, e.g., over a network. A WCC device is a type of internet of things (IOT) device that can sense data, process data, send data, respond to data requests and exchange data with other WCC device, a network device, a user device, and/or systems over the internet. In some configurations, a WCC device may include a power source that enables usage of low power, e.g., to send data that is sensed, request data and/or communicate data wirelessly. WCC devices maybe function as standalone devices or may be integrated into other devices. In some configurations, a WCC device may include power harvesting circuitry, including power harvesting user controls. A WCC device may be pre-configured or coded to report occurrence of an event, log an event, log state, cause an action, send a message or request data from one or more end nodes.
    Type: Grant
    Filed: July 23, 2016
    Date of Patent: July 31, 2018
    Inventors: Gary M. Zalewski, Albert S. Penilla
  • Patent number: 10033343
    Abstract: A device includes a reconfigurable receiver front end having variable gain and variable bandwidth configured to tune to a plurality of communication channels in a communication band, the reconfigurable receiver front end responsive to a signal power level.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: July 24, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Aleksandar Miodrag Tasic, Chiewcharn Narathong, Gurkanwal Singh Sahota, Shrenik Patel
  • Patent number: 10028222
    Abstract: An apparatus and method for controlling power in a communication system are provided. The method includes amplifying an input signal by a second processor farther from an antenna than a first processor, and determining whether to enable or disable each of the first processor and the second processor based on results from the amplification by the second processor. Another method includes amplifying an input signal from an antenna by a second processor electrically farther from the antenna than a first processor, and determining whether to operate the first processor and the second processor based on a value related to a reception state for the amplified signal by the second processor.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: July 17, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ju-Ho Son, Jeong-Ho Lee, Chul-Woo Byeon, Dae-Young Lee, Sun-Kyu Choi
  • Patent number: 10014886
    Abstract: A bias circuit provides additional bias current for power amplifiers during data bursts to compensate for the gain droop caused by a rise in the power amplifier temperature during the data burst. A bias circuit includes a difference amplifier and switches coupled to the difference amplifier. The switches operate the bias circuit in a first mode when a transmit data burst is detected and operate the bias circuit in a second mode after the bias circuit has operated in the first mode for a predetermined period of time. In the first mode, the bias circuit charges a storage capacitor and sets an output current to zero. In the second mode, the bias circuit outputs the output current that increases above the initial value of zero as the PA warms up, where the excursion of this increase of current is determined by a register. The switches disable the bias circuit when the transmit data burst ends.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: July 3, 2018
    Assignee: Skyworks Solutions, Inc.
    Inventors: Edward John Wemyss Whittaker, Gordon Glen Rabjohn
  • Patent number: 9991850
    Abstract: An RF amplifier module that has a plurality of amplifiers wherein at least one of the amplifiers is powered via an envelope tracking module. The biasing input of at least one of the amplifiers is provided to the first amplifier to power the first amplifier to reduce power consumption. The first amplifier may also be powered via fixed biasing to provide greater stability of the module.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: June 5, 2018
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: Philip John Lehtola
  • Patent number: 9989622
    Abstract: In a general aspect, the radio state of a wireless communication device is controlled. In some aspects, a first set of motion detection signals is processed by operation of a radio subsystem of a wireless communication device in a first radio state. An amount of variation in the first set of motion detection signals is determined based on values of a parameter of the motion detection signals. A counter is updated in response to a determination that the variation is greater than a first threshold, and the radio subsystem is changed to a second radio state based on comparing the value of the counter with a second threshold. A motion detection process is executed to detect motion of an object in the space based on a second set of motion detection signals processed by operation of the radio subsystem in the second radio state.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: June 5, 2018
    Assignee: Cognitive Systems Corp.
    Inventors: Dustin Griesdorf, Stephen Arnold Devison, Christopher Vytautas Olekas
  • Patent number: 9979496
    Abstract: Some embodiments include a system for simulating electromagnetic environments that includes a channel emulator having a plurality of outputs, each output associated with a different operational path. Each operational path has a power amplifier, an antenna and a first coupling mechanism. The power amplifier is coupled to an output of the channel emulator. The antenna is in communication with a test region of the apparatus. The first coupling mechanism simultaneously couples power to the antenna and to a first measurement path when the operational path is coupled to the test region, so that a calibration state of the operational path can be determined and adjusted without interruption of a signal coupled to the antenna in the operational path.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: May 22, 2018
    Assignee: ETS- Lindgren Inc.
    Inventor: Michael David Foegelle
  • Patent number: 9979359
    Abstract: Optimized impedance characteristics of a variable impedance device causes the apparatus to transmit wireless signals with minimal out-of-band transmission at an optimized efficiency of the power amplifier. The variation of impedance characteristics of an antenna cause a change in the coefficients of a mapping function. The relatively fast variations to the power supply voltage of a power amplifier are applied to the mapping function to generate control signals which vary the impedance characteristics of a variable impedance device. The output of the mapping function includes control signals that control optimized impedance characteristics of a variable impedance device as a function of the variation of the supply voltage to a power amplifier. The coefficients of the mapping function may be regularly determined based on a comparison of out-of-band power and in-band power transmitted by an antenna.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: May 22, 2018
    Assignee: CCIP, LLC
    Inventor: Ronald Duane McCallister
  • Patent number: 9906209
    Abstract: A biased impedance circuit, an impedance adjustment circuit, and an associated signal generator are provided. The biased impedance circuit is coupled to a summation node and applies a biased impedance to the summation node. A periodic input signal is received at the summation node. The biased impedance circuit includes a switching circuit for receiving an output window signal, wherein a period of the output window signal is shorter than a period of the periodic input signal. The switching circuit includes a low impedance path and a high impedance path. The low impedance sets the biased impedance to a first impedance when the output window signal is at a first voltage level. The high impedance path sets the biased impedance to a second impedance when the output window signal is at a second voltage level. The first impedance is less than the second impedance.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: February 27, 2018
    Assignee: MEDIATEK INC.
    Inventors: Keng-Meng Chang, Yao-Chi Wang
  • Patent number: 9900735
    Abstract: A communication system providing volume attenuation as a function of distance from the communication source to simulate natural communication.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: February 20, 2018
    Assignee: FEDERAL SIGNAL CORPORATION
    Inventors: Traci Barron, Scott Cassidy, David Perry, Eric Sugalski
  • Patent number: 9872260
    Abstract: A power adjustment method includes: measuring output power that is obtained when input power to be amplified in a linear region is input to a power amplifier configured to amplify input power linearly in the linear region and amplify input power nonlinearly in a nonlinear region; deriving a straight line connecting a measurement point corresponding to the measured output power and a boundary point between the linear region and the nonlinear region in a coordinate plane representing input/output characteristics; acquiring information on an approximate equation that is stored in advance in correspondence with the measured output power, the approximate equation representing a relation between input power and output power in the nonlinear region; and storing information on the derived straight line and the acquired information on the approximate equation in a semiconductor integrated circuit provided at a preceding stage of the power amplifier.
    Type: Grant
    Filed: May 29, 2016
    Date of Patent: January 16, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Nobuhide Hachiya, Takashi Tanii, Yasuhiro Murakami, Yusuke Yamamori, Yasuaki Takeuchi, Masahiko Hirao, Manabu Murakami, Mikio Hayashihara
  • Patent number: 9838962
    Abstract: Processes, methods and circuits for improving battery life by reducing the battery power-drain of battery-powered devices with wireless receivers is disclosed. Embodiments provide for variably changing the bias current, impedance, and gain through a plurality of values, either separately or in combination, during receiver circuit operation to optimize power dissipation. The dynamic changes to gain, bias and impedance characteristics of the receiver circuit may occur in any of an amplifier, a filter, and a mixer, and are responsive to the components of an input signal comprising a desired signal and interferer signal. Dynamic changes may also be made to a dynamic range and noise floor of the receiver circuit.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: December 5, 2017
    Assignee: Theta IP, LLC
    Inventor: Yannis Tsividis
  • Patent number: 9813025
    Abstract: Embodiments of the invention provide an apparatus for amplifying a radio frequency transmission signal, comprising: an envelope signal obtaining unit (210) configured to obtain a slow envelope signal indicating a time averaging amplitude component of the radio frequency signal and a fast envelope signal indicating an instant amplitude component of the radio frequency signal; a supply voltage modulating unit (230) configured to provide an output modulated supply voltage to the power amplifying unit by modulating a direct current supply voltage based on both the slow envelope signal and the fast envelope signal; and a power amplifying unit (220) configured to amplify power of the radio frequency transmission signal according to the output modulated supply voltage.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: November 7, 2017
    Assignee: Nokia Technologies Oy
    Inventor: Zhancang Wang
  • Patent number: 9813276
    Abstract: A method for transmitting a signal is described, wherein the method has transforming a signal into a frequency domain to obtain a spectrum, forming a filtered spectrum according to a filter spectrum and occupying a set of subcarriers of a frequency domain representation of an Orthogonal Frequency Division Multiplex (OFDM) signal with the filtered spectrum. A temporary signal is obtained by transforming the frequency domain representation of the OFDM signal into a time domain. The temporary signal is subjected to a phase modulation.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: November 7, 2017
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Volker Jungnickel, Liane Grobe
  • Patent number: 9813997
    Abstract: A wireless transmission system disclosed herein includes a transmitter-receiver pair. When a dielectric object approaches the transmitter-receiver pair, a signal strength of a transmitted carrier wave increases at the receiver. In response, transmission power of the transmitter can be dynamically reduced. When the dielectric object moves away from the transmitter-receiver pair, a signal strength of the carrier wave decreases at the receiver. In response, the transmission power of the transmitter can be dynamically increased.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: November 7, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Sean Russell Mercer, Charbel Khawand
  • Patent number: 9800905
    Abstract: In accordance with one or more embodiments, digitally encoded audio may be sent by a computing system to a user system over a network. The user system may receive the digitally encoded audio, may produce a sound encoded within the digitally encoded audio, and may record a sample of the sound as produced by the user system. The sample may be analyzed, a format of digitally encoded audio may be selected based on the analysis, and audio digitally encoded in accordance with the selected format may be sent by the computing system to the user system over the network.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: October 24, 2017
    Assignee: Comcast Cable Communications, LLC
    Inventors: Dave Rose, White Webuye, Dave Ohare