With Phase Shifting, Correcting, Or Regulating In The Output Path Of One Or More Collectors Patents (Class 455/276.1)
  • Patent number: 10405298
    Abstract: Methods and systems described herein relate to broadcasting on a wireless channel. An example system includes a sensor and a transceiver coupled to the sensor, the transceiver including: an oscillator circuit including a thin-film bulk acoustic resonator (FBAR), and an antenna. The system also includes a controller with a processor programmed to: broadcast, by the antenna, a first data packet on a wireless channel, where the first data packet is a first packet of a broadcast event; receive, at the antenna, a second data packet transmitted on the wireless channel, where the second data packet is a second packet of the broadcast event; and responsive to receiving the second data packet, perform an action associated with the broadcast event; responsive to the action, transmit, by the antenna, a third data packet on the wireless channel, where the third data packet is a third packet of the broadcast event.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: September 3, 2019
    Assignee: Verily Life Sciences LLC
    Inventor: Robert Francis Wiser
  • Patent number: 10236837
    Abstract: Circuits, devices and methods are disclosed, including radio-frequency circuitry comprising a polar modulator configured to invert a sampled transmitted signal into an inverted sampled transmitted signal, a signal combiner configured to combine the inverted sampled transmitted signal with a received signal and a control logic circuit coupled to the polar modulator, the control logic circuit configured to adjust one or more tuning parameters of the polar modulator for inverting the sampled transmitted signal.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: March 19, 2019
    Assignee: Skyworks Solutions, Inc.
    Inventors: Mackenzie Brian Cook, John Jackson Nisbet, John William Mitchell Rogers
  • Patent number: 10218427
    Abstract: Disclosed herein is a diversity receiver (DRx) configuration configured to support carrier aggregation. The DRx configuration includes a diversity receiver (DRx) module coupled to a diversity radio frequency (DRF) module. The DRx module includes a splitter and a combiner to provide a plurality of DRx paths for signals of different frequency bands. The DRx modules includes a plurality of DRx amplifiers for individual frequency bands and the DRF module includes a plurality of downstream amplifiers. A controller is configured to adjust a gain of the DRF amplifiers in response to changes in a gain of the amplifiers of the DRx module.
    Type: Grant
    Filed: August 11, 2018
    Date of Patent: February 26, 2019
    Assignee: SKYWORKS SOLUTIONS, INC.
    Inventor: Stephane Richard Marie Wloczysiak
  • Patent number: 10171143
    Abstract: This disclosure provides a microwave radio transmitter for radio transmission to a microwave radio receiver. The microwave radio transmitter comprises an antenna arrangement and a baseband processing module connected to the antenna arrangement. The antenna arrangement comprises an antenna having a polarization. The baseband processing module is configured to receive a polarization misalignment indication from the microwave radio receiver. The polarization misalignment indication is indicative of a misalignment between the polarization of the antenna and a corresponding polarization of a receive antenna comprised in the microwave radio receiver. The baseband processing module is configured to compensate for polarization misalignment between the antenna and the receive antenna by adjusting the radio transmission based on the polarization misalignment indication.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: January 1, 2019
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Markus Gerdin, Björn Gävert, Göran Nilsson
  • Patent number: 9843349
    Abstract: A system and method for frequency reuse for wireless point-to-point backhaul. Frequency reuse is enabled through the cancellation of interfering signals generated by interference sources. In one embodiment, a conventional dish antenna is complemented with one or more additional auxiliary antennas (e.g., isotropic). The one or more additional auxiliary antennas enable cancellation of interfering signals whose direction of arrival (DOA) is off the dish antenna's bore-sight.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: December 12, 2017
    Assignee: Maxlinear Asia Singapore PTE LTD
    Inventors: Ronen Shaked, Ilan Reingold, Eitan Tsur, Eran Ridel
  • Patent number: 9841489
    Abstract: Method and system for radiolocation of RF transmitter in the presence of multipath interference. RF receivers are spatially separated at known locations in a moderate multipath environment in the vicinity of the transmitter. Upon detection of a received active RF signal associated with the transmitter, the receivers are directed to acquire measurements of the detected RF signal. Each receiver obtains a sequence of measurements of the RF signal at different positions along a trajectory that provides multiple measurements at relative phase differences between the direct-path and the multipath reflections of the detected RF signal. The receivers may be repositioned automatically or manually, or prearranged or selectively deployed at fixed positions along the trajectory. TDOA measurements between pairs of receivers are calculated based on the obtained measurements, and are averaged to provide a respective updated TDOA measurement value for each receiver pair, which is used to determine the transmitter location.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: December 12, 2017
    Assignee: ELBIT SYSTEMS BMD AND LAND EW-ELISRA LTD.
    Inventors: Eyal Boker, Avinoam Levy, Rami Goldreich
  • Patent number: 9584170
    Abstract: A broadband superheterodyne receiver. Embodiments include an input for receiving an RF signal including an RF data signal at a carrier frequency. An RF mixer coupled to the input shifts the RF data signal from the carrier frequency to an IF frequency. An IF band pass filter coupled to the mixer has a pass band, and band pass filters the signal near the IF frequency. A spectrum analyzer provides information representative of the spectral characteristics of the received RF signal around the RF data signal at the carrier frequency. An IF controller is coupled to the RF mixer and to the spectrum analyzer. The IF controller: (1) determines an interference-mitigating IF frequency within the pass band of the band pass filter that will result in attenuation of undesired portions of the RF signal, and (2) controls the RF mixer to shift the RF data signal to the interference-mitigating IF frequency.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: February 28, 2017
    Assignee: FreeWave Technologies, Inc.
    Inventors: Timothy G. Mester, Steven E. McMeekin, Gregory J. Veintimilla
  • Patent number: 9538399
    Abstract: A wireless communication apparatus includes: a first antenna; a second antenna; a variable phase shifting unit that changes a phase of a high frequency signal to be received or transmitted via the first antenna and the second antenna; and a phase-information table storage unit that stores a phase information table in which phase information is associated with each of a plurality of communication terminals as communication partners. When communicating with one communication terminal out of the plurality of communication terminals via the first antenna and the second antenna, the variable phase shifting unit changes a phase of a high frequency signal on the basis of phase information stored in the phase information table in association with the one communication terminal.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: January 3, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Shigeru Morimoto
  • Patent number: 9369948
    Abstract: In one implementation, a radio is tuned to a frequency and bandwidth such that it can accommodate a plurality of frequency channels of a plurality of RATs. Radio samples are acquired by the radio and stored to an input memory. The RAT specific cell search further includes performing a RAT specific frequency scan on the set of radio samples to detect candidate frequencies for each RAT. Performing the RAT specific frequency scan may comprise dividing the set of radio samples into the plurality of frequency channels for each RAT, sensing the energy for each channel for each RAT, determining a set of frequency channels having highest energy for each RAT and attempting to detect candidate frequencies having highest energy for each RAT.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: June 14, 2016
    Assignee: Intel Deutschland GmbH
    Inventors: Deepak Varshney, Tianyan Pu
  • Patent number: 9325543
    Abstract: An active circuit control system that utilizes multiple PWM signals to activate and power an array of active components, requiring minimal wiring between the multi-mode signal conditioner and active components. Signal conditioning and filtering is implemented to allow transmission of power and control signals for multiple components over a single or multiple transmission lines. The circuit can be used to provide supply voltage and control signals for active antennas, switch networks, and other components in communication systems and electronic devices.
    Type: Grant
    Filed: November 11, 2012
    Date of Patent: April 26, 2016
    Assignee: ETHERTRONICS, INC.
    Inventors: Laurent Desclos, Sebastian Rowson
  • Patent number: 9320007
    Abstract: A communication network of the present disclosure can determine a location of a communication device, such as a mobile communication device, a wireless access point, and/or a base station to provide some examples, within its geographic coverage area based upon one or more communication signals that are communicated within the communication network and/or between the communication network and another communication network. The communication network can implement a multilateration technique to determine the location of the communication device based upon the one or more communication signals as received over various signal pathways. In, an embodiment, the communication device can include multiple receiving antennas for receiving the one or more communication signals over multiple first signal pathways. The multilateration technique can use the one or more communication signals as received over the multiple first signal pathways to estimate a coarse location of the mobile communication device.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: April 19, 2016
    Assignee: Broadcom Corporation
    Inventors: Yasantha Rajakarunanayake, Vinko Erceg
  • Patent number: 9184796
    Abstract: An apparatus and a method for operating antennas. A terminal includes a plurality of short range wireless communication antennas, each antenna disposed on different surface or in a vicinity of the different surface of the terminal, and a short range wireless communication control module configured to control to select at least one of the plurality of short range wireless communication antennas.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: November 10, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Junhak Ji, Yongyi Kim
  • Patent number: 9154196
    Abstract: A wireless communication device front end includes power amplifiers, low noise amplifiers, and a distributed antenna system. The distributed antenna system includes antennas and an antenna coupling circuit. The antenna coupling circuit receives an outbound signal of a first wireless communication from a power amplifier and sends first and second components of the outbound signal to first and second antennas. The antenna coupling circuit also receives an inbound signal of a second wireless communication from a third antenna and sends the inbound signal to a low noise amplifier. The third antenna is a distance from the first antenna and from the second antenna such that, in air, the outbound signal is attenuated at the third antenna.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: October 6, 2015
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza Rofougaran, Alireza Tarighat Mehrabani, Maryam Rofougaran
  • Patent number: 9137132
    Abstract: An antenna monitoring system in one example embodiment includes a plurality of analog-to-digital (A/D) converters configured to receive a plurality of tapped antenna signals and generate a plurality of digitized antenna signals, and an antenna monitor coupled to the plurality of A/D converters and coupled to a Base Transceiver Station (BTS) of the distributed antenna system, with the antenna monitor comprising a storage system configured to store an antenna monitor routine and a plurality of per-antenna information, a communication transceiver configured to transfer the plurality of per-antenna information, and a processing system configured to receive the plurality of digitized antenna signals from the plurality of A/D converters, reverse-process the plurality of digitized antenna signals to generate the plurality of per-antenna information, and feed the plurality of per-antenna information back to the BTS, with the BTS using the plurality of per-antenna information to monitor the plurality of antenna sub-sy
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: September 15, 2015
    Assignee: Sprint Communications Company L.P.
    Inventors: Stephen R. Bales, Maneesh Gauba, Kaushik Goswami, Paul Jacob Sterchi
  • Patent number: 9112562
    Abstract: An embodiment of the present invention provides a method, comprising using an adaptive codebook for beamforming for communications in wireless networks.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: August 18, 2015
    Assignee: INTEL CORPORATION
    Inventors: Qinghua Li, Hongming Zheng, Senjie Zhang, Xintian Eddie Lin, Shanshan Zheng, Guangjie Li
  • Patent number: 8995943
    Abstract: In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are independently adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals of various polarizations are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements, with the transmitted beams having various polarizations. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: March 31, 2015
    Assignee: ViaSat, Inc.
    Inventors: David W. Corman, Rob Zienkewicz, David Saunders
  • Patent number: 8971796
    Abstract: A signal repeating element for repeating a signal includes a housing, at least one transmit antenna element positioned on one side of the housing and at least one receive antenna element positioned on the same one side of the housing. Receiver and transmitter circuitry is coupled with respective ones of the receive and transmit antenna elements. Phase circuitry for affecting the phase of signals from the at least one receive antenna element and at least one transmit antenna element is coupled between the respective receive or transmit antenna element and the receiver or transmitter circuitry.
    Type: Grant
    Filed: January 13, 2014
    Date of Patent: March 3, 2015
    Assignee: Andrew LLC
    Inventors: Mano D. Judd, Breck W. Lovinggood, David T. Tennant, Gregory A. Maca, William P. Kuiper, James L. Alford, Michael D. Thomas, Jonathon C. Veihl
  • Patent number: 8958757
    Abstract: A mobile communication device and a method of controlling same, in which the mobile communication device transmits a plurality of transmit diversity signals comprising a first transmit signal and a second transmit signal differing at least by values of a transmit diversity parameter, receives a plurality of feedback signals from at least one base station in response to the plurality of transmit diversity signals; and determines a system delay based on detecting that a number of expected feedback signal patterns among the received plurality of feedback signals exceeds a system delay threshold.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: February 17, 2015
    Assignee: Google Inc.
    Inventors: Eduardo Abreu, Haim Harel
  • Patent number: 8934942
    Abstract: Base station arrangement (100) adapted to receive signals from a user station; adapted to be connected to or comprises a plurality of antenna elements (1, 1, 2, 2, . . . 4,) with antenna ports (11, . . . 11) and a signal processing unit (20). The base station (21) also comprises a signal pre-processing functional unit (30) to collect channel correlation information. It is adapted to establish if there is one or more distinguishing characteristics comprising different correlation properties of different configuration properties associated with the antenna elements. Antenna elements are then assigned to different groups based on said configuration properties, and the channel correlation information is used to generate weighting information which is applied to antenna ports connected to antenna elements to control the antenna ports connected to antenna elements to control the antenna element transmit power individually or groupwise.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: January 13, 2015
    Assignee: Telefonaktiebolaget L.M. Ericsson (publ)
    Inventors: Sven Petersson, Bjorn Johannisson
  • Patent number: 8923924
    Abstract: A system and method for processing antenna signals are provided. For example, the method includes, in a receive mode, weighting and combining signals from at least one low-band antenna radiator element operable over a first bandwidth, at least one high-band antenna radiator element operable over a second bandwidth at least partially overlapping the first bandwidth, and, in some examples, at least one antenna radiator element operable over one or more intermediate bandwidths. The method also includes, in a transmit mode, separating and weighting a full-band input port signal into at least one low-band sub-system output port signal, at least one high-band sub-system port output signal, and, in some examples, at least one intermediate sub-system output port signal operable over one or more overlapping intermediate bandwidths. The weighted combination and weighted separation cover an uninterrupted continuous full-band frequency whose extent covers the full frequency range of all subbands.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: December 30, 2014
    Assignee: Raytheon Company
    Inventors: Victor S. Reinhardt, Jar J. Lee, Fangchou Yang
  • Patent number: 8903346
    Abstract: A system includes a first external mounted amplifier (EMA) having a first low-noise amplifier (LNA) coupled to a first antenna, a second EMA having a second LNA coupled to a second antenna, a first splitter coupled between the first antenna and the first LNA, a first phase shifter coupled to the first splitter, and a second mixer coupled to the first phase shifter. The first LNA is operable to receive a first input signal from first antenna. The second LNA is operable to receive a second input signal from second antenna. The first splitter is operable to derive a first sampling signal from first signal. The first phase shifter is operable to shift the phase of first sampling signal to create a second cancelation signal. The second mixer is operable to mix a second input signal derived from second signal with second cancelation signal to create a second output signal.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: December 2, 2014
    Assignee: ADC Telecommunications, Inc.
    Inventors: Larry G. Fischer, David Willey, Chad Boeckman
  • Patent number: 8897455
    Abstract: A disclosed method selects a plurality of fewer than all of the channels of a multichannel signal, based on information relating to the direction of arrival of at least one frequency component of the multichannel signal.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: November 25, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Erik Visser, Ernan Liu
  • Patent number: 8885774
    Abstract: A receiving apparatus, a receiving method, and an imaging apparatus and method, adapted to receive high frequency image signals. The apparatus includes two or more receiver channels, each receiver channel including an antenna pattern including plural antenna elements to receive high frequency image signals, a receiving mechanism to process the high frequency image signals received by the antenna elements into baseband signals, an analog-to-digital conversion mechanism to convert the baseband signals from the receiving mechanism into digital signals, a phase shifting mechanism to phase shift the digital signals, and a combining mechanism to combine the phase shifted digital signals from the receiver channels into combined signals.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: November 11, 2014
    Assignee: Sony Corporation
    Inventors: Richard Stirling-Gallacher, Ralf Boehnke, Qi Wang, Stefan Koch, Marc Guthoerl
  • Patent number: 8874047
    Abstract: The disclosed invention relates to a transceiver system having one or more receive antennas that receive a first radio frequency (RF) signal and a plurality of transmit antennas that wirelessly transmit a second RF signal. A local channel determination unit provides data corresponding to the environment of local communication channels (i.e., the communication channels between the transmit antennas and the receive antennas) to a beamforming element, which enables beamforming functionality within the transmit and/or receive antennas (e.g., by using analog or digital weights to vary the radiation pattern generated by the transmit antennas) so as to attenuate RF signals extending between the transmit antennas and the receive antennas. By attenuating signals extending between the transmit and the receive antennas, a high degree of isolation is achieved between transmission and reception paths.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: October 28, 2014
    Assignee: Intel Mobile Communications GmbH
    Inventors: Osama Nafeth Alrabadi, Mikael Bergholz Knudsen, Gert F. Pedersen, Alexandru Daniel Tatomirescu, Mauro Pelosi, Samantha Caporal Del Barrio, Poul Olesen, Peter Bundgaard
  • Patent number: 8862063
    Abstract: Methods and devices for phase shifting an RF signal for a base station antenna are provided. The device includes a transmission line that has a stationary ground plane coupled to the top of a substrate and a signal line on the bottom of the substrate. The signal line has an input port and an output port. The input port receives the RF signal with a certain phase and travels across the bottom of the substrate to the output port. The RF signal has a different phase at the output port because defected ground structures etched on the stationary ground plane shift the phase of the RF signal. In addition, the device includes a movable ground plane that may cover a portion of the defected ground structures, the substrate, and the stationary ground plane such that the moveable ground plane further adjusts the phase of the RF signal.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: October 14, 2014
    Assignee: Thiagarajar College of Engineering
    Inventors: V. Abhaikumar, S. Raju, S. Deepak Ram Prasath, R. Senthilkumar, P. Vasikaran
  • Patent number: 8849229
    Abstract: An electrically small receiver system is provided. The receiver system includes a plurality of antennas and a signal processing circuit. The plurality of antennas includes a first antenna configured to receive a first signal and a second antenna configured to receive a second signal. The signal processing circuit includes a phase shifter configured to apply a phase shift to the received second signal. The phase shift applied by the phase shifter is a function of an angle of incidence of the second signal measured relative to a boresight direction of the plurality of antennas. The signal processing circuit is configured to form an output signal that is a combination of the received first signal and the phase shifted second signal.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: September 30, 2014
    Assignee: Wisconsin Alumni Research Foundation
    Inventor: Nader Behdad
  • Patent number: 8838047
    Abstract: A dynamic radio frequency (RF) front end includes an antenna array, a power amplifier structure, and a low noise amplifier structure. The power amplifier structure generates a plurality of outbound RF signals from an outbound RF signal and provides the plurality of outbound RF signals to the antenna array. Each of the plurality of outbound RF signals has a different transmit phase rotation. The low noise amplifier structure receives a plurality of inbound RF signals from the antenna array and outputs one of the plurality of inbound RF signals based on a favorable phase relationship with respect to the outbound RF signal. Each of the plurality of inbound RF signals has a different receive phase rotation.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: September 16, 2014
    Assignee: Broadcom Corporation
    Inventors: Ahmadreza (Reza) Rofougaran, Maryam Rofougaran, Amin Shameli
  • Patent number: 8824992
    Abstract: Aspects of a method and system for wireless local area network (WLAN) phase shifter training are presented. Aspect of the system may enable a receiving station, at which is located a plurality of receiving antennas, to estimate the relative phase at which each of the receiving antennas receives signals from a transmitting station. This process may be referred to as phase shifter training. After determining the relative phase for each of the receiving antennas, the receiving station may process received signals by phase shifting the signals received via each of the receiving antennas in accordance with the relative phase shifts determined during the phase shifter training process. Signals received via a selected one of the receiving antennas may be unshifted. The processed signals may be combined to generate a diversity reception signal.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: September 2, 2014
    Assignee: Broadcom Corporation
    Inventor: Mark Gonikberg
  • Patent number: 8818315
    Abstract: Signal quality of a composite received signal in a radio communication network is optimized by adjusting a phase offset between received and/or transmitted signals based on signal quality parameters of the received and/or transmitted signals. The phase offset is adjusted by varying the phase offset between the received or transmitted signals such that that the composite signal is circularly, elliptically, or linearly polarized. The phase offset between the received or transmitted signals is continually adjusted based on the received signal quality parameters.
    Type: Grant
    Filed: April 18, 2013
    Date of Patent: August 26, 2014
    Assignee: AT&T Mobility II LLC
    Inventors: John E. Lewis, Melvin D. Frerking, David G. Shively
  • Patent number: 8817672
    Abstract: In an exemplary embodiment, a phased array antenna comprises a bidirectional antenna polarizer and is configured for bidirectional operation. The bidirectional antenna polarizer may combine active implementations of power splitters, power combiners, and phase shifters. Furthermore, in another exemplary embodiment a bidirectional antenna polarizer has extensive system flexibility and field reconfigurability. In yet another exemplary embodiment, the bidirectional phased array antenna operates in “radar-like” applications where the transmit and receive functions operate in half-duplex fashion. Furthermore, in exemplary embodiments, the phased array antenna is configured to operate over multiple frequency bands and/or multiple polarizations.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: August 26, 2014
    Assignee: ViaSat, Inc.
    Inventors: David W. Corman, Donald Lawson Runyon, David Hancharik
  • Patent number: 8811914
    Abstract: A method and apparatus for processing a terahertz frequency electromagnetic beam are disclosed. For example, the method receives the terahertz frequency electromagnetic beam via a metamaterial having a plurality of addressable magnetic elements, where a resonant frequency of each of the plurality of addressable magnetic elements is capable of being programmably changed via an adjustment, and activates selectively a subset of the plurality of addressable magnetic elements to manipulate the terahertz frequency electromagnetic beam.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: August 19, 2014
    Assignee: AT&T Intellectual Property I, L.P.
    Inventors: David Michael Britz, Robert Raymond Miller, II
  • Patent number: 8805295
    Abstract: In a telecommunications network including a mobile terminal and a base station associated with a plurality of antennas, with each antenna configured to transmit the signal with a time offset relative to the other antenna or antennas, an engine for controlling a signal to be transmitted wirelessly from the base station towards the mobile terminal, the engine being configured to receive one or more parameter measurements relevant to the mobile terminal; and use the one or more parameter measurements to adjust the time offset of at least one of the antennas in order to adapt the signal transmission dependent upon the mobile terminal's instantaneous circumstances. Ideally the engine is configured to receive the one or more parameter measurements relating to a plurality of different mobile terminals, and independently adjust the time offset for each of the plurality of different mobile terminals, depending upon the one or more applicable parameter measurements.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: August 12, 2014
    Assignee: Vodafone Group PLC
    Inventors: Peter Cosimini, Andrew Dunkin, Paul Edwards
  • Patent number: 8805300
    Abstract: The disclosed invention relates to a MIMO (multiple input, multiple output) wideband transceiver. In some cases, the MIMO wideband transceiver comprises a signal processor that outputs or receives a plurality of distinguishable data streams. A first data stream is provided to a first antenna port connected to a plurality of wideband antennas, while a second data stream is provided to a second antenna port connected to a wideband antenna. A spatial filter element configured to assign antenna weights to the plurality of wideband antennas, which cause the wideband antennas to operate in a manner that attenuates wireless signals, at a frequency range at which the wideband transmit wideband radiate, in the direction of the wideband antenna without attenuating the wireless signals in other directions. By attenuating signals extending between the plurality of wideband antennas and the wideband antenna, wideband decoupling between first and second antenna ports is achieved.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: August 12, 2014
    Assignee: Intel Mobile Communications GmbH
    Inventors: Osama Nafeth Alrabadi, Mikael Bergholz Knudsen, Gert F. Pedersen, Alexandru Daniel Tatomirescu, Mauro Pelosi, Samantha Caporal Del Barrio, Poul Olesen, Peter Bundgaard
  • Patent number: 8781429
    Abstract: Progressive cancellation of electromagnetic interference (EMI) is achieved by establishing a canceller stage processing order in a receiver feed circuit. Such a processing order may be one that progressively narrows an interference analysis bandwidth around desired target signal and optimizes gain-bandwidth characteristics of a cancellation loop in each canceller stage accordingly. A cancellation signal generated by each canceller stage is adaptively controlled without disturbing the stability of the cancellation loop. By doing so, the residual interference-to-noise ratio at each adaptive canceller stage is optimized independently from the closed cancellation loop control of the other canceller stages resulting in improved interference cancellation in the receiver feed circuit.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: July 15, 2014
    Assignee: Exelis Inc.
    Inventor: Gevork George Bornazyan
  • Patent number: 8761835
    Abstract: The present invention relates to a wireless communication node (20A) connected to an antenna part (10A) with a plurality of antenna elements (1A, 2A, 3A, 4A) and antenna ports (11A1, 11A2, 11A3, 11A4) over feeder ports (21A1, 21A2, 21A3, 21A4). It comprises signal analyzing means (21A) adapted to analyze a signal received from a mobile station, and to, for each pair of antenna elements (1A, 2A, 3A, 4A), calculate the respective phase difference or phase angle between the signals from the elements of the pair, phase progression function handling means (26A) for calculating a phase progression function over the antenna ports, connection combination handling means (24A) adapted to find all possible combinations of connections between the antenna ports and the feeder ports and the corresponding phase angles or phase differences.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: June 24, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Fredrik Athley, Mikael Coldrey, Sven Petersson
  • Patent number: 8750896
    Abstract: A system and methodology that can utilize attachment data collected by a set of femto access points (FAPs) to localize, predict, and/or weight potential wireless communication traffic within and between areas, is provided. Moreover, the attachment data can be indicative of user equipment (UE) density/traffic within coverage areas of respective femtocells. The attachment data can be consolidated and analyzed to identify location and motion of a UE “swarm”. Moreover an automatic cell planning (ACP) component can be employed to utilize the attachment data for determining an optimal macro site and optimal antenna setting(s) that facilitate steering/tuning the macro antenna beam to focus upon the swarm area. In addition, the ACP component can facilitate reconfiguration of the macro antenna beam as reported swarm concentrations shift between the FAPs.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: June 10, 2014
    Assignee: AT&T Mobility II LLC
    Inventors: Arthur Brisebois, Mark Causey, Adrianne Luu
  • Patent number: 8744395
    Abstract: A system for mitigating radio frequency (RF) interferences. The system may comprise an interference cancellation module communicatively coupled with a first antenna, the interference cancellation module configured for mitigating interferences from a second antenna by phase shifting a signal receivable at the first antenna according to a phase shift value, the phase shift value being predetermined when the second antenna is oriented in an initial directional orientation. The system may further comprise a variable RF delay module communicatively coupled with the interference cancellation module, the variable RF delay module configured for determining a current directional orientation of the second antenna, the variable RF delay module further configured for providing a phase compensation value based upon the current directional orientation of the second antenna.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: June 3, 2014
    Assignee: Rockwell Collins, Inc.
    Inventor: James P. Mitchell
  • Patent number: 8693970
    Abstract: In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are independently adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals of various polarizations are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements, with the transmitted beams having various polarizations. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: April 8, 2014
    Assignee: ViaSat, Inc.
    Inventors: David W. Corman, Rob Zienkewicz, David Saunders
  • Patent number: 8687645
    Abstract: A wireless communications device may include a portable housing and a temperature-compensated clock circuit carried by the portable housing. The device may further include a wireless receiver carried by the portable housing for receiving timing signals, when available, from a wireless network, and a satellite positioning clock circuit carried by the portable housing. A clock correction circuit may be carried by the portable housing for correcting the temperature-compensated clock circuit based upon timing signals from the wireless network when available, and storing historical correction values for corresponding temperatures. The clock correction circuit may also correct the temperature-compensated clock circuit based upon the stored historical correction values when timing signals are unavailable from the wireless network, and correct the satellite positioning clock based upon the temperature-compensated clock circuit.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: April 1, 2014
    Assignee: BlackBerry Limited
    Inventor: Michael Andrew Goldsmith
  • Patent number: 8670720
    Abstract: Methods and devices for phase shifting an RF signal for a base station antenna are provided. The device includes a transmission line that has a stationary ground plane coupled to the top of a substrate and a signal line on the bottom of the substrate. The signal line has an input port and an output port. The input port receives the RF signal with a certain phase and travels across the bottom of the substrate to the output port. The RF signal has a different phase at the output port because defected ground structures etched on the stationary ground plane shift the phase of the RF signal. In addition, the device includes a movable ground plane that may cover a portion of the defected ground structures, the substrate, and the stationary ground plane such that the moveable ground plane further adjusts the phase of the RF signal.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: March 11, 2014
    Assignee: Thiagarajar College of Engineering
    Inventors: Varadhan Abhaikumar, Seenivasan Raju, Subburaj Ramprasath Deepak Ram, Rajagopal Senthilkumar, Prabhakaran Vasikaran
  • Patent number: 8666345
    Abstract: The invention relates to a filter (20) filtering a downlink signal of an antenna (13) of an indoor cellular system, the filter comprising a signal determining unit (24) determining a signal strength of an uplink signal received by said antenna (13), the filter adjusting a signal strength of the downlink signal of said antenna (13) in accordance with the signal strength of the uplink signal.
    Type: Grant
    Filed: April 9, 2009
    Date of Patent: March 4, 2014
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Said Soulhi, Taoufiq Abouzid
  • Patent number: 8639204
    Abstract: In an exemplary embodiment, a phased array antenna comprises multiple subcircuits in communication with multiple radiating elements. The radio frequency signals are adjusted for both polarization control and beam steering. In a receive embodiment, multiple RF signals are received and combined into at least one receive beam output. In a transmit embodiment, at least one transmit beam input is divided and transmitted through multiple radiating elements. In an exemplary embodiment, the phased array antenna provides multi-beam formation over multiple operating frequency bands. The wideband nature of the active components allows for operation over multiple frequency bands simultaneously. Furthermore, the antenna polarization may be static or dynamically controlled at the subarray or radiating element level.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: January 28, 2014
    Assignee: ViaSat, Inc.
    Inventors: David W. Corman, Rob Zienkewicz, David R Saunders
  • Patent number: 8634495
    Abstract: Communication is performed for a first communication device having a set of antenna elements. A quality-indication signal is received from a second communication device (e.g., a basestation). A complex weighting is calculated based on the quality-indication signal. A pre-transmission signal is modified based on the complex transmit diversity weighting to produce a set of modified-pre-transmission signals, wherein the modifications are symmetric by making approximately half the magnitude of the transmit diversity modification to one signal in a first direction, and approximately half the magnitude of the transmit diversity modification to the other signal in a second direction, opposite the first direction. Each modified pre-transmission signal from the set of modified-pre-transmission signals is uniquely associated with an antenna element from the set of antenna elements. The set of modified-pre-transmission signals is sent from the set of antenna elements to produce a transmitted signal.
    Type: Grant
    Filed: August 20, 2012
    Date of Patent: January 21, 2014
    Assignee: Google Inc.
    Inventors: Haim Harel, Phil F. Chen, Sherwin J. Wang, Eduardo Abreu
  • Patent number: 8626242
    Abstract: To provide an adaptive array antenna capable of increasing resolution of a variable beam direction of the antenna without increasing a calculation amount in arithmetic processing unit for optimally controlling a variable phase shifter. A parasitic element-equipped adaptive array antenna (100) includes n (n is an integer equal to or greater than 2) parasitic antenna elements (1011 to 101n), (n?1) fed antenna elements (1021 to 102n?1) which are coupled to the parasitic antenna elements (1011 to 101n) by electromagnetic fields, and (n?1) variable phase shifters (1041 to 104n?1) which change the phases of radio frequency signals to be supplied to the respective fed antenna elements (1021 to 102n?1). Each of the fed antenna elements (1021 to 102n?1) is arranged astride at least two of the parasitic antenna elements (1011 to 101n).
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: January 7, 2014
    Assignee: Panasonic Corporation
    Inventor: Takeshi Ono
  • Patent number: 8620244
    Abstract: An electrical component with a diversity front-end circuit that is exclusively designed to transmit received signals is disclosed. The diversity front-end circuit is capable of receiving incoming signals in at least two frequency bands simultaneously. The diversity front-end circuit includes at least two receiving paths coupled to a diversity antenna, wherein the received signals of the respective frequency band are transmitted in each receiving path.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: December 31, 2013
    Assignee: EPCOS AG
    Inventors: Christoph Roeckl, Peter Hagn, Torsten Moebes
  • Patent number: 8611959
    Abstract: A transmitter system including: a bidirectional signaling (BDS) network having first and second networks for carrying first and second carrier signals, and having a set of n phase synchronous location pairs (ai, bi); and also including tunable transmitter circuits for driving an antenna array, each tunable transmitter circuit having an output line for carrying an output signal and first and second input lines electrically connected to the first and second networks of the BDS network at locations of a corresponding one of the set of phase synchronous location pairs, and including a multiplier having a first input electrically connected to the first input line of that tunable transmitter circuit; a phase setting circuit electrically connected to the multiplier for controlling the phase of the output signal of that tunable transmitter circuit; and an amplitude setting circuit for controlling the amplitude of the output signal of that tunable transmitter circuit.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: December 17, 2013
    Assignee: Blue Danube Labs, Inc.
    Inventors: Mihai Banu, Yiping Feng, Vladimir I. Prodanov
  • Patent number: 8606206
    Abstract: A beamforming network includes a plurality of signal conditioning devices in signal communication with each other, wherein each of the signal conditioning devices receives an input signal, conditions the input signal by independently and selectively adjusting at least one of a time delay, a phase, and an amplitude of the input signal, and transmits an output signal to at least one of another of the signal conditioning devices, an antenna, and a load.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: December 10, 2013
    Assignee: Lockheed Martin Corporation
    Inventors: Lawrence K. Lam, Joseph Ku
  • Patent number: 8594598
    Abstract: A method for processing signals in a receiver includes receiving a plurality of wireless signals via a plurality of M receive antennas coupled to M corresponding signal amplifiers. The method may also include measuring corresponding signal strengths of M signals generated when each of M phase-shifters is coupled to each of the M receive antennas, while one or more of the M signal amplifiers are disabled. One of the M generated signals may be selected for processing without the use of an antenna switch, where the selecting may be based on the measured signal strength. Each of the plurality of received wireless signals may be amplified prior to the measuring. One or both of an in-phase (I) component and/or a quadrature (Q) component may be generated for each of the M generated signals.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: November 26, 2013
    Assignee: Broadcom Corporation
    Inventors: Arya Behzad, Ali Afsahi, Mark Gonikberg
  • Patent number: 8588805
    Abstract: A receiver includes an antenna array, an angular positioning module, a low noise amplifier module, and a down conversion module. The antenna array is operable to receive an inbound wireless signal. The angular positioning module is operable to: receive a plurality of received inbound wireless signals from the antenna array; determine angular position of a source of the inbound wireless signal from at least some of the plurality of received inbound wireless signals based on a first radiation pattern and a second radiation pattern of the plurality of received inbound wireless signals; and output a representation of the inbound wireless signal. The low noise amplifier module is operably coupled to amplify the representation of the inbound wireless signal to produce an amplified inbound wireless signal. The down conversion module is operably coupled to convert the amplified inbound wireless signal into a baseband or near baseband signal.
    Type: Grant
    Filed: May 30, 2009
    Date of Patent: November 19, 2013
    Assignee: Broadcom Corporation
    Inventors: Alfred Grau Besoli, Nicolaos G. Alexopoulos, Jesus Castaneda
  • Patent number: 8583183
    Abstract: A system and method for implementing transmission parameter control at a transmitting station is described. The exemplary system and method comprises querying a transmission parameter control module for a transmission schedule. The transmission schedule comprises at least one schedule entry defining a set of transmission parameter controls as they pertain to a destination address. At least one packet of data is then transmitted to the destination address according to the transmission parameters controls of at least one schedule entry from the transmission schedule. A system and method for selecting an antenna configuration corresponding to a next transmission of packet data is also disclosed.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: November 12, 2013
    Assignee: Ruckus Wireless, Inc.
    Inventors: William Kish, Victor Shtrom, John Chanak