In Antenna Circuit Patents (Class 455/121)
  • Patent number: 10128915
    Abstract: There is disclosed a mobile terminal including a housing comprising a first metal case, a second metal case and a first non-conductive case arranged between the first metal case and the second metal case, a battery embedded in the housing, a first coil arranged in an area covered by the first metal case inside the housing, a main board comprising a charging module implemented to recharge the battery using electric currents which flow in the first coil, and a first resonator arranged in an area covered by the first non-conductive case and comprising a first matching circuit corresponding to a first frequency, such that the examples of the mobile terminal in accordance with the present disclosure may enhance performance of the wireless communication unit and wireless charging performance, without design change of the housing having the metal case.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: November 13, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jaehyun Choi, Hyengcheul Choi, Deuksu Choi, Dongjin Kim, Chisang You
  • Patent number: 10055126
    Abstract: In accordance with embodiments of the present disclosure, a wireless network interface may include a transmit/receive path comprising an antenna for transmitting and receiving wireless transmissions and a baseband controller communicatively coupled to the transmit/receive path and configured to receive fused sensor information indicative of environmental conditions detected by a plurality of sensors and, based on the fused sensor information, tune one or more parameters of the transmit/receive path.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: August 21, 2018
    Assignee: Dell Products L.P.
    Inventors: Liam B. Quinn, Liam Prendergast
  • Patent number: 9991597
    Abstract: A circuit for tuning an impedance matching network is disclosed. The circuit includes a current sensor, a control circuit coupled to the current sensor and a reference current source and a tunable capacitor coupled to the control circuit. The control circuit is configured to generate a control signal based on an output of the current sensor, wherein the control signal is configured to vary a capacitance of the tunable capacitor.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: June 5, 2018
    Assignee: NXP B.V.
    Inventor: Javier Mauricio Velandia Torres
  • Patent number: 9917631
    Abstract: Switching apparatus for use in RF transmission systems. The apparatus comprises first and second RF signal inputs, each coupled to an RF signal path including a coupler directing a portion of input RF signal power to corresponding first and second RF signal outputs. The apparatus includes an RF signal switching arrangement having a control input, a switch output, a first switch input coupled to the first RF signal path, a second switch input coupled to the second RF signal path, and the RF signal switching arrangement is operable by the control input to selectively connect the first or second switch input to the switch output. An RF signal monitoring output is coupled to the switch output, and a processor is configured to receive a switch command input and generate a switch control signal which is adapted to configure the RF signal switch arrangement in accordance with the switch command input.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: March 13, 2018
    Assignee: RF INDUSTRIES PTY LTD
    Inventors: Anthony David Batholomaeus, Scott Hayden Alford
  • Patent number: 9614555
    Abstract: According to an embodiment, a transmission circuit is configured to transmit a signal to a reception circuit through a transmitting AC coupling element. The transmitting AC coupling element is AC coupled to a receiving AC coupling element. The transmission circuit includes a drive signal generation circuit and a drive circuit. The drive signal generation circuit is configured to generate a drive signal in synchronization with a transmission signal to be transmitted. The drive circuit is configured to cause, in response to the drive signal, a drive current to flow between both ends of the transmitting AC coupling element in synchronization with a rising edge and a falling edge of the transmission signal during a driving period set in advance. The drive circuit is configured to apply an applied voltage to both of the ends of the transmitting AC coupling element after the driving period.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: April 4, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shinji Nakatsuka, Shinsuke Fujii
  • Patent number: 9584207
    Abstract: An embodiment of a method for adaptive multi-antenna selection, executed by an AP (access point), which contains at least the following steps. After a data transmission request or a data receipt request is received from a client station, it is determined whether the client station is the first time connected client station within a predetermined time interval. If the client station is the first time connected client station, a first antenna combination is selected to transmit/receive data with the client station using a first antenna selection procedure. If the client station is not the first time connected client station, a second antenna combination is selected to transmit/receive data with the client station using a second antenna selection procedure.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: February 28, 2017
    Assignee: Accton Technology Corporation
    Inventors: I-Ru Liu, Ji-Shang Yu
  • Patent number: 9484977
    Abstract: The present invention is a novel and useful RF transformer based transmit/receive (TX/RX) integrated RF switch. In one embodiment of the invention, the TX/RX RF switch circuit is based on the use of an RF transformer which functions as (1) the PA output transformer during TX mode and (2) as a series inductance in an LNA matching network during receive mode. Thus, the RF transformer plays a dual function or role. Antenna diversity is achieved by having multiple antennas each having an associated antenna switch connected to the output transformer. The TX/RX switch of the invention reduces the number of switches required for antenna diversity to a minimum and minimizes RF losses in the system. The TX/RX switch is suitable for use with modern wireless communication standards such as DECT, 802.11 WLAN, Bluetooth, ZigBee, etc. The configuration of the TX/RX circuit permits the use of common, relatively low cost semiconductor fabrication techniques such as standard CMOS processes.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: November 1, 2016
    Assignee: DSP GROUP, LTD.
    Inventors: Sergey Anderson, Sharon Betzalel
  • Patent number: 9450687
    Abstract: A self-calibrating antenna system having a radio frequency (RF) detector configured to estimate a time delay of a transmission signal on a transmission line, which couples an RF front end with an antenna tuner, based on a magnitude and phase of an input impedance of the transmission line at a first set of a plurality of respective frequencies, and a transceiver configured to transmit to the antenna tuner a calibrated tuning control command based on the estimated time delay to calibrate the antenna tuner and the transmission line.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: September 20, 2016
    Assignee: Intel IP Corporation
    Inventors: Alfonso Munoz-Acevedo, Pablo Herrero
  • Patent number: 9083317
    Abstract: Systems and methods for calibrating antenna tuner device parameters can involve measuring a first signal level of an antenna tuner device, adjusting a tuning setting of the antenna tuner device, measuring one or more adjusted signal levels of the antenna tuner device, determining a level change between the first signal level and the one or more adjusted signal levels, comparing the level change to a predefined reference level change, and adjusting a device setting of the antenna tuner device to compensate for a difference between the level change and the predefined reference level change.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: July 14, 2015
    Assignee: WISPRY, INC.
    Inventors: Maarten A. E. Seth, Kerrance Lynn Carpenter
  • Patent number: 9026068
    Abstract: There is provided a system that includes a tunable amplification module, a coupler, an interface module; a detector that is arranged to output an impedance indicative signal and a power indicative signal; wherein the impedance indicative signal is indicative of an impedance mismatch between an output impedance of the tunable amplification module and an impedance of a radio frequency (RF) antenna as seen by the tunable amplification module, wherein the power indicative signal is indicative of an output power of the tunable amplification module.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: May 5, 2015
    Assignee: DSP Group Ltd.
    Inventors: Lior Blanka, Solon Jose Spiegel
  • Patent number: 9026050
    Abstract: In a communication circuit, an RFIC includes an IO terminal and a control IC includes an IO terminal. A variable capacitance element includes control terminals, a capacitance element with a capacitance value that is determined according to a control voltage, and a resistance voltage divider circuit configured to generate the control voltage by dividing a voltage inputted to the control terminals. One of the RFIC and the control IC supplies control data to the variable capacitance element via a signal line. The variable capacitance element, along with an antenna coil, constitutes an antenna circuit of an LC parallel resonance circuit, and sets a resonant frequency of the antenna circuit to be a predetermined frequency.
    Type: Grant
    Filed: April 18, 2014
    Date of Patent: May 5, 2015
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Naoto Ikeda, Nobuo Ikemoto, Naoki Gouchi, Toshiyuki Nakaiso, Katsumi Taniguchi
  • Patent number: 9014645
    Abstract: In a wireless communication device (10), adjustment means (matching controlling means (152)) changes a reactance of a matching section (17), determination means (calculation means (151), matching controlling means (152)) determines whether a resonance frequency of an antenna (11) exists on a side higher than or lower than the operation frequency of the antenna (11) on the basis of a change in an intensity of a signal, which change is caused by a change in the reactance and is detected by a signal intensity detection section (14), and the adjustment means adjusts the reactance so that the resonance frequency is closer to the operation frequency on the basis of a result of determination of the determination means.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: April 21, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Kazuhiko Ikehata
  • Patent number: 8996080
    Abstract: A radio-frequency (RF) device for a wireless communication device includes a grounding element, an antenna, a first DC blocking element for cutting off a direct-current (dc) signal route between a grounding terminal of the antenna and the grounding element, a capacitive sensing unit capable of using a radiating element of the antenna to sense an environment capacitance within a specific range, a second DC blocking element electrically connected between the radiating element and the feed-in element for blocking a dc signal path from the radiating element to the feed-in element, and a high-frequency blocking element electrically connected between the radiating element and the capacitive sensing unit for blocking a high-frequency signal path from the radiating element to the capacitive sensing unit.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: March 31, 2015
    Assignee: Wistron NeWeb Corporation
    Inventors: Shang-Sian You, Kuan-Hsueh Tseng
  • Patent number: 8989586
    Abstract: Optical communications system (10) and method for transmission of payload data (PD) from a low earth orbit satellite (20) to an optical ground terminal (30), the low earth orbit satellite (20) being connectable with the optical ground terminal (30) via an optical downlink channel (DL), and the optical ground terminal (30) being connectable with the low earth orbit satellite (20) via an uplink channel (UC); wherein said uplink channel (UC) is an acquisition and tracking beacon channel by means of a ground beacon (GB) controlled by a point-acquisition-track subsystem (PAT), the ground beacon (GB) comprising a wide angle beam (W) for acquisition and a guidance beam (G) for tracking; and wherein the ground beacon (GB) for the uplink channel (UC) is a pulse position modulated PPM channel.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: March 24, 2015
    Assignee: RUAG Schweiz AG
    Inventors: Felix Andreas Arnold, Thomas Dreischer
  • Patent number: 8983415
    Abstract: A system is disclosed for monitoring of individual frequency channels in an RF signal band by configuration of the electronic processor to operate the tunable filter to select desired channel sub bands. Measurement of forward and/or reverse-propagating fields within the selected sub-bands may be performed and corresponding power levels recorded. The records may be used to provide monitoring signals, such as measures of forward and reflected power, as well as VSWR, return loss. Indications or alarms may be activated if any of these quantities, associated with any one or more channels, falls outside a predetermined acceptable operating range.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: March 17, 2015
    Assignee: RF Industries Pty Ltd
    Inventors: Michael W. Jones, Lambertus A. M. Voskulen
  • Patent number: 8958855
    Abstract: A mobile terminal is provided that includes front and rear cases, an intermediate case between the front and rear cases, and a printed circuit board between the intermediate cases and at least one of the front and rear cases. A shielding member having a first width, length and thickness, and being formed of a metal. Non-conductive material may have a second thickness attached to at least two edges of the shielding member.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: February 17, 2015
    Assignee: LG Electronics Inc.
    Inventors: Min-Chul Shin, Han-Seok Chae
  • Patent number: 8929841
    Abstract: Methods and systems for a touchscreen interface utilizing leaky wave antennas (LWAs) are disclosed and may include configuring one or more leaky wave antennas utilizing conductive traces in the touchscreen interface for communication of wireless RF signals. RF signals may be communicated utilizing the configured LWAs. A resonant frequency of the LWAs may be configured utilizing micro-electro-mechanical systems (MEMS) deflection. The LWAs may be configured to communicate the RF signals in a desired direction. The LWAs may comprise microstrip or coplanar waveguides, where a cavity height of the one or more leaky wave antennas is dependent on spacing between conductive lines in the waveguides. The touch control commands by the touchscreen interface may be sensed utilizing capacitance, inductance, and/or resistance measurements.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: January 6, 2015
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8913972
    Abstract: The specification and drawings present a new method, apparatus and software related product for antenna clustering for multi-antenna aperture selection (MAAS), e.g., in LTE wireless systems, using multi-core DSP processing with sub-optimum selection of N out of M of antenna signals and minimizing the performance degradation due to the sub-optimal antenna/antenna signal selection. Assigning each DSP core (machine) to N/K antennas (i.e., to antenna signals) having a similar property (e.g., polarization) and a same tier, the selection of N out of M using a predefined criterion (e.g., best SINR) is reduced to selecting N/K out of M/K which reduces the computation complexity by a factor of K, where K is a number of the DSP cores.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: December 16, 2014
    Assignee: Nokia Siemens Networks Oy
    Inventors: Yehuda Luz, Philip Fleming, Shirish Nagaraj
  • Patent number: 8909166
    Abstract: An apparatus and method for controlling a multi-band antenna in a mobile communication terminal are provided. An apparatus for controlling a multi-band antenna in a mobile communication terminal includes a modem, an antenna unit, a Radio Frequency (RF) processing unit, and a switch module. The modem outputs at least one control signal corresponding to a target frequency band. The antenna unit changes a resonance frequency of the antenna according to the at least one control signal. The RF processing unit includes a plurality of transmission/reception (TX/RX) paths and processes TX/RX signals. The switch module connects the antenna to one of the TX/RX paths according to the at least one control signal.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: December 9, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-Ho Park, Sung-Hwan Ko, Suk-Chan Hong, Young-Hwan Jung
  • Patent number: 8909184
    Abstract: A method for wireless communication is provided and may include configuring at least one capacitor array in an antenna system to control a frequency for receiving external signals. An antenna and at least one inductor in the antenna system may be configured for receiving external signals at a first frequency. An inductor and a voltage source, a capacitor, and/or a ground reference may be configured for receiving the external signals at a different frequency if the frequency is utilized for backscattered signal reception and/or magnetically coupled signal reception. Near field communication (NFC) signals may be received at the different frequency for backscattered signals. Radio frequency identification (RFID) signals may be received at the different frequency for magnetically coupled signals. The first frequency may be within the FM frequency band. The antenna system may be configured to transmit signals to be subsequently received as backscattered signals or magnetically coupled signals.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: December 9, 2014
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza Rofougaran
  • Publication number: 20140357205
    Abstract: There is provided a system that includes a tunable amplification module, a coupler, an interface module; a detector that is arranged to output an impedance indicative signal and a power indicative signal; wherein the impedance indicative signal is indicative of an impedance mismatch between an output impedance of the tunable amplification module and an impedance of a radio frequency (RF) antenna as seen by the tunable amplification module, wherein the power indicative signal is indicative of an output power of the tunable amplification module.
    Type: Application
    Filed: May 28, 2013
    Publication date: December 4, 2014
    Inventor: Solon Jose Spiegel
  • Patent number: 8897733
    Abstract: Methods and systems for dynamically tuning and calibrating an antenna using on-chip digitally controlled array of capacitors are disclosed. Aspects of one method may include dynamically tuning a mobile terminal antenna (MTA) using on-chip arrays of capacitive devices. The tuning may be, for example, to compensate for center frequency drift during operation of the mobile terminal. The tuning may be accomplished by selecting capacitive devices in the on-chip arrays of capacitive devices to use in conjunction with an inductive circuit coupled to the MTA, where the inductive circuit may be either off the chip or on the chip. Accordingly, an impedance of the circuit formed by the capacitive devices in the on-chip arrays of capacitive devices and the inductive circuit may be adjusted with respect to the MTA. A valid circuit configuration may include a configuration where no capacitive device may be selected for use with the inductive circuit.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: November 25, 2014
    Assignee: Broadcom Corporation
    Inventor: Ahmadreza Rofougaran
  • Patent number: 8891692
    Abstract: A data processing apparatus is arranged to map input data symbols to be communicated onto a predetermined number of sub-carrier signals of Orthogonal Frequency Division Multiplexed OFDM symbols. The predetermined number of sub-carrier signals is determined in accordance with one of a plurality of operating modes and the input data symbols are divided into first sets of input data symbols and second sets of input data symbols.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: November 18, 2014
    Assignee: Sony Corporation
    Inventors: Matthew Paul Athol Taylor, Samuel Asangbeng Atungsiri, John Nicholas Wilson
  • Patent number: 8892062
    Abstract: Methods for reducing power dissipation from an input power source in a telecommunications system are disclosed. In one embodiment the method includes: utilizing a first I2C device to monitor an input voltage and input current to a remote unit; providing the input voltage and input current to a main microprocessor for calculating an input power; utilizing a second I2C device to monitor an output voltage and output current from the remote unit; providing the output voltage and output current to the main microprocessor for calculating an output power; calculating a power efficiency of the remote unit at the main microprocessor based on the input power and the output power; utilizing a third I2C device to provide the power efficiency of the remote unit to a digital power manager; and utilizing the digital power manager to control the DA trim output to a DC/DC converter.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: November 18, 2014
    Assignee: Alcatel Lucent
    Inventors: Simon P. Whittam, John S. Gryba, Michael W. Parrell
  • Patent number: 8872972
    Abstract: A router module is arranged in a housing of a smart television. The router module is externally connected to a modem for surfing the Internet. The router module is electrically connected to a micro processing unit of the smart television. Therefore, the smart television is connected to the Internet through the router module. A wireless transmission chip of the router module is configured to process Internet signals. An antenna module is configured to wirelessly transmit the Internet signals, so that wireless network is shared to outside.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: October 28, 2014
    Inventor: Nai-Chien Chang
  • Patent number: 8868014
    Abstract: An antenna is provided having a good matching characteristics when immersed in a fluid such as saline water, oil, or other liquids (“the phantom liquid”). In some embodiments, the antenna provides a tight capacitive coupling with the phantom liquid through the use of a higher permeability cover and absence of a gap between the cover and the antenna body. One embodiment employs a tunably capacitively loaded inverted “F” antenna structure. Additional embodiments of the invention provide an antenna tuning system that saves power by utilizing very low duty cycle periodical refreshing charge at a tuning varactor diode coupled to the antenna.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: October 21, 2014
    Assignee: Olympus Corporation
    Inventor: Ivan Krivokapic
  • Patent number: 8868006
    Abstract: A bi-directional signal interface includes a first waveguide that propagates a first traveling wave. The first waveguide has one end that is coupled to a RF input port that receives a RF transmission signal and another end that is coupled to a RF bi-directional port that receives a RF reception signal and that transmits the RF transmission signal. A second waveguide is positioned proximate to the first waveguide. The second waveguide has one end that is coupled to an output port that passes the received RF reception signal. A non-reciprocal coupler couples fields from the first waveguide to the second waveguide so that the RF reception signal from the bi-directional port couples from the first waveguide to the second waveguide in a substantially non-reciprocal manner and then passes through the output port, and the RF transmission signal from the RF input port passes through the first waveguide to the RF bi-directional port.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: October 21, 2014
    Assignee: Photonic Systems, Inc.
    Inventors: Charles Cox, Edward Ackerman
  • Patent number: 8849194
    Abstract: Methods and systems for a mesh network utilizing leaky wave antennas (LWAs) are disclosed and may include configuring one or more devices as a mesh network in a wireless device coupled to a plurality of LWAs, and communicating data between said devices via the configured mesh network. A resonant frequency of the LWAs may be configured utilizing micro-electro-mechanical systems (MEMS) deflection. A plurality of the LWAs may be configured to enable beamforming. The LWAs may comprise microstrip or coplanar waveguides, wherein a cavity height of the LWAs is dependent on spacing between conductive lines in the waveguides. The plurality of LWAs may be integrated in one or more of: integrated circuits, integrated circuit packages, and printed circuit boards. The devices may be internal to the wireless device. The data may be communicated via the mesh network to devices external to the wireless device.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: September 30, 2014
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8843085
    Abstract: An impedance tuning and optimization technique is described wherein an impedance interface is dynamically tuned prior to applying transmit power to the circuit. A coupled signal injected into the antenna port is used to optimize the tuning state of a tuning component such that the impedance properties of the circuit are optimized prior to application of transmit power. A coupled or injected signal at an alternate frequency band can be utilized to determine tuning state or parameters at the frequency of interest by first tuning at the frequency of the coupled or injected signal and then accessing a data base containing information that relates tuning parameters across multiple frequency bands for various levels of antenna de-tuning. A time-savings is realized when the tuning circuit is optimized prior to activation or use of the transmit/receive path.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: September 23, 2014
    Assignee: Ethertronics, Inc.
    Inventors: Laurent Desclos, Jeffrey Shamblin, Sebastian Rowson
  • Patent number: 8843061
    Abstract: Methods and systems for power transfer utilizing leaky wave antennas (LWAs) are disclosed and may include configuring one or more LWAs in a communication device to receive RF signals that are communicated from one or more other LWAs that are external to the communication device. The communication device may be powered utilizing the RF signals that are received via the configured LWAs. A resonant frequency of the LWAs may be configured utilizing micro-electro-mechanical systems (MEMS) deflection. The LWAs may be configured to receive the RF signals from a desired direction. The LWAs may comprise microstrip or coplanar waveguides, wherein a cavity height of the LWAs is dependent on spacing between conductive lines in the waveguides. The LWAs may be integrated in integrated circuits, integrated circuit packages, and/or printed circuit boards. The packages may be affixed to printed circuit boards and the integrated circuits may be flip-chip-bonded to the packages.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: September 23, 2014
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8838175
    Abstract: A signal transmission channel using a SIW between a transmitter and distant receiver. The SIW may include a MSL/SIW interface, be flexible, may use plug connections and/or may operate in a MMW band.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: September 16, 2014
    Assignee: Sony Corporation
    Inventors: Yaqiong Zhang, Xiaobing Sun, Yugang Ma
  • Patent number: 8831540
    Abstract: Methods and systems for amplitude modulation using a leaky wave antenna are disclosed and may include amplitude modulating an output of one or more power amplifiers in a wireless device by modulating a bias current in the power amplifiers that are coupled to one or more leaky wave antennas. The leaky wave antennas may include a balun that may be integrated on the chip, on a package to which the chip may be affixed, and/or integrated on a printed circuit board to which the chip may be affixed. An output power of the power amplifiers may be adjusted by configuring a bias voltage on the leaky wave antennas. The bias voltage may be configured utilizing a DC to DC voltage controller. The bias current may be modulated via one or more switched current sources. The switched current sources may be binary weighted and/or may be current mirrors.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: September 9, 2014
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8824982
    Abstract: A time-variant antenna is disclosed that uses a switched capacitor array in silicon to improve the performance and integration options of the time-variant antenna. Parasitic effects of the interface between the on-board antenna and on-silicon switched capacitor array are considered and the antenna is tuned to compensate for these effects. The switched capacitor array provides high linearity, lower cost, and reduced size, relative to prior art antenna implementations.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: September 2, 2014
    Assignee: Intel Corporation
    Inventors: Seong-Youp Suh, Ricardo Suarez-Gartner
  • Patent number: 8818457
    Abstract: A compact antenna includes a main antenna patch. A first feed point and a second feed point connect with the main antenna patch to provide current in the main antenna. Excitation of the first feed point produces polarization in a first direction along the main antenna patch and excitation of the second feed point produces polarization in a second direction different from the first direction.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: August 26, 2014
    Assignee: Broadcom Corporation
    Inventors: Alfred Grau Besoli, Nick Alexopoulos, Jesus Alfonso Casteneda
  • Patent number: 8818287
    Abstract: A communication apparatus including a first antenna and performing wireless communication in which a reflected power from the first antenna changes depending on a positional relationship between the first antenna of the communication apparatus and a second antenna of a communication partner. The communication apparatus further includes a transmission unit configured to transmit a data signal to the communication partner via the first antenna, a determination unit configured to determine a reflected power generated when the transmission unit supplies the data signal to the first antenna, and a control unit configured to control the transmission of the data signal by the transmission unit, based on the reflected power determined by the determination unit.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: August 26, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Katsuo Saito
  • Patent number: 8811923
    Abstract: Methods and systems for an integrated voltage controlled oscillator (VCO)-based transmitter and on-chip power distribution network are disclosed and may include supplying bias voltages and/or ground to a chip utilizing conductive lines. One or more VCOs and low-noise amplifiers (LNAs) may each be coupled to a leaky wave antenna (LWA) integrated in the bias voltage and/or ground lines. One or more clock signals may be generated utilizing the VCOs, which may be transmitted from the LWAs coupled to the VCOs, to the LWAs coupled to the LNAs. RF signals may be transmitted via the LWAs, and may include 60 GHz signals. The LWAs may include microstrip and/or coplanar waveguides, where a cavity length of the LWAs may be dependent on a spacing between conductive lines in the waveguides. The LWAs may be dynamically configured to transmit the clock signals at a desired angle from a surface of the chip.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: August 19, 2014
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Maryam Rofougaran
  • Patent number: 8811911
    Abstract: A radio-frequency (RF) processing device, for a wireless communication device, is disclosed. The RF processing device comprises an antenna, an RF-signal processing module, a controller, for generating a control signal according to a band switching signal, and a matching adjustment module for adjusting an impedance between the antenna and the RF-signal processing module according to the control signal.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: August 19, 2014
    Assignee: HTC Corporation
    Inventors: Chih-Chin Su, Chung-Chi Lai, Chien-Ting Ho, Wan-Ming Chen
  • Patent number: 8792937
    Abstract: A computing device with a configurable antenna. The antenna is configured through a switching circuit operating under software control. Operating characteristics of the antenna are configured based on connections between conducting segments established by the switching circuit, allowing the nominal frequency, bandwidth or other characteristics of the antenna to be configured. Because the switching is software controlled, the configurable antenna may be integrated with a software defined radio. The radio and antenna can be reconfigured to support communication according to different wireless technologies at different times or to interleave packets according to different wireless technologies to support concurrent sessions using different wireless technologies.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: July 29, 2014
    Assignee: Microsoft Corporation
    Inventors: Amer A. Hassan, Christian Huitema
  • Patent number: 8781428
    Abstract: A frequency synthesizer includes a controlled oscillator configured to extend a temperature range and phase noise of the synthesizer without compromising the frequency coverage of the synthesizer. The frequency synthesizer also includes bias generation circuitry that sets a bias current of a charge pump to reduce bandwidth variations of the synthesizer. The frequency synthesizer further includes switching circuitry to dynamically turn a charge pump on and off to reduce effects of current leakage in the charge pump.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: July 15, 2014
    Assignee: Silicon Laboratories Inc.
    Inventors: Mustafa H. Koroglu, Sherry X. Wu, Ramin Khoini-Poorfard, Alessandro Piovaccari
  • Patent number: 8781417
    Abstract: An embodiment of the present invention provides an apparatus, comprising a transceiver, an antenna tuner connecting said transceiver to an antenna, a power sensor adapted to acquire measurements about transmit power, a receive signal strength indicator (RSSI) adapted to acquire measurements about receive power and wherein said tuner tunes said antenna based upon said transmit and receive measurements to optimize said antenna in both the receive and transmit bands.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: July 15, 2014
    Assignee: BlackBerry Limited
    Inventor: Guillaume Alexandre Blin
  • Patent number: 8781522
    Abstract: The invention utilizes small, narrow-band and frequency adaptable antennas to provide coverage to a wide range of wireless modes and frequency bands on a host wireless device. The antennas have narrow pass-band characteristics, require minimal space on the host device, and allow for smaller form factor. The frequency tunability further allows for a fewer number of antennas to be used. The operation of the antennas may also be adaptably relocated from unused modes to in-use modes to maximize performance. These features of the antennas result in cost and size reductions. In another aspect, the antennas may be broadband antennas.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: July 15, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Allen Minh-Triet Tran, Ernest T. Ozaki, Jatupum Jenwatanavet, Gregory Alan Breit
  • Patent number: 8774712
    Abstract: A contactless communication medium includes a base made of an insulating material, an antenna coil section including a conductor wound in a planar shape on the base, an inductance adjusting conductor pattern that is connected in parallel to a part of the conductor in the antenna coil section, and is placed on the base, a capacitor connected to the antenna coil section, and a communication processing section that is connected to the antenna coil section and the capacitor to perform contactless communication processing.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: July 8, 2014
    Assignee: Sony Corporation
    Inventors: Keisuke Sato, Sachio Saitoh
  • Patent number: 8774866
    Abstract: An Electrically Floating, Near Vertical Incidence, Skywave (NVIS) Antenna comprising an antenna element, a floating ground element, and a grounding element. At least part of said floating ground element is positioned between said antenna element and said grounding element. The antenna is separated from the floating ground element and the grounding element by one or more electrical insulators. The floating ground element is separated from said antenna and said grounding element by one or more electrical insulators.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: July 8, 2014
    Assignee: United States Department of Energy
    Inventors: Allen A. Anderson, Timothy G. Kaser, Paul A. Tremblay, Belva L. Mays
  • Patent number: 8744381
    Abstract: An adjustment module, an electronic device with the adjustment module, and an antenna performance adjusting method thereof are disclosed. The adjustment module is used for adjusting an antenna module. The antenna module is disposed in the electronic device and used for radiating a wireless signal. The adjustment module includes a monitoring module, a determining module, and a capacitance adjusting unit. The monitoring module is used for detecting an alternating current signal waveform when the antenna module radiates the wireless signal. The determining module receives the alternating current signal waveform and is used for generating an adjusting voltage value when the alternating current signal waveform is a non-constant amplitude. The capacitance adjusting unit is used for changing a capacitance value according to the adjusting voltage value to adjust a resonance point coordinate of the antenna module.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: June 3, 2014
    Assignee: Wistron Corporation
    Inventor: Yin-Tsai Wang
  • Patent number: 8744394
    Abstract: A system including a diversity module and an antenna selection module. The diversity module is configured to measure (i) a first signal-to-noise ratio and a first error rate associated with a first antenna, and (ii) a second signal-to-noise ratio and a second error rate associated with a second antenna. The antenna selection module is configured to select the first antenna or the second antenna by comparing (i) the first signal-to-noise ratio to the second signal-to-noise ratio, and (ii) the first error rate to the second error rate.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: June 3, 2014
    Assignee: Marvell International Ltd.
    Inventors: Milind Kopikare, Brian Bosso, Partho Mishra
  • Patent number: 8718581
    Abstract: Apparatus and method for reducing the current consumption and increasing the efficiency of an RF power amplifier (PA), according to which the load, connected to the output stage of the PA, tuned dynamically or statically for each level of the desired output power. By doing so, the output impedance of the output stage is essentially matched, such that the dynamic RF load line has a slope that corresponds to the impedance required to provide this level. Whenever a smaller output power is desired in response to reduction in the input signal to the amplifier, the load is further tuned, such that the dynamic or static RF load line has a slope that causes the power amplifier to essentially remain in saturation at the smaller output power.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: May 6, 2014
    Assignee: QUALCOMM Incorporated
    Inventor: Avner Elia
  • Patent number: 8718578
    Abstract: A circuit arrangement includes a component having a closed signal path, that closed signal path connected to a first port, a second port and at least a third port. The component has a directed signal flow of a signal applied to one of that ports. Such a coupling device can be connected to a transmitter and to a receiver path, respectively.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: May 6, 2014
    Assignee: Intel Mobile Communications GmbH
    Inventors: Bernd Adler, Zdravko Boos
  • Patent number: 8712348
    Abstract: An apparatus and method manage impedance values in a radio in a wireless network. The apparatus includes a tunable matching network (TMN) positioned on a path between a transceiver and an antenna. The TMN includes a plurality of immittance elements. A voltage standing wave ratio (VSWR) detector is configured to detect a ratio of a signal passing the VSWR detector and a signal reflected from the TMN. A control circuit is configured to identify an operating setting for the radio, set a number of the immittance elements based on the operating setting, monitor the ratio detected by the VSWR detector, and modify a setting of at least one of the immittance elements based on the ratio detected.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: April 29, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Michael L. Brobston, Xu Zhu, Au Duy Bui, George Z. Hutcheson
  • Patent number: 8712355
    Abstract: A method, transceiver integrated circuit (IC), and communications device for generating antenna tuning states derived from a pre-established trajectory of tuning states to adjust a detected signal level towards a preset, given value. A tuning state generation (TSG) controller determines whether a detected signal level matches a given value. If the detected signal level does not match the given value, the TSG controller selects an initial preset tuning state from a pre-established trajectory corresponding to a pre-identified operating condition that best matches a current operating condition. The TSG logic forwards the initial preset tuning state to the antenna tuner to trigger impedance transformation. Following generation of the initial preset tuning state, the controller receives an updated detected signal level. If the updated detected signal level fails to match the given value, the controller generates an incremental tuning state that is interpolated between the initial and a final preset tuning states.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: April 29, 2014
    Assignee: Motorola Mobility LLC
    Inventors: Gregory R. Black, William P. Alberth
  • Patent number: 8705492
    Abstract: A MIMO receiving apparatus that can demodulate a spatially multiplexed signal without using any division operation requiring a large quantity of operation resources. In the MIMO receiving apparatus, stream separation section (105) separates a spatially multiplexed signal into a plurality of streams based on numerator submatrix A. Numerator submatrix A is determined according to channel matrix H and a canceller scheme and corresponds to a numerator of stream separation matrix S that equalizes the phase and amplitude of the spatially multiplexed signal. Denominator part calculation section (108) calculates a denominator (denominator coefficient) of stream separation matrix S and correction section (117) corrects a threshold determined according to a modulation scheme of the spatially multiplexed signal using the denominator (denominator coefficient) of stream separation matrix S.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: April 22, 2014
    Assignee: Panasonic Corporation
    Inventors: Hidekuni Yomo, Kiyotaka Kobayashi