With A Delay Line (e.g., Serpentine Transmission Line, Frequency Scanning) Patents (Class 342/375)
  • Patent number: 10763594
    Abstract: An antenna system includes a power divider, a first antenna array, a second antenna array, a third antenna array, a delay device, a first switch element, and a second switch element. The power divider has a first output port, a second output port, and a third output port. The first antenna array is coupled to the first output port. The second antenna array is coupled to the second output port. The third antenna array is coupled to the third output port. The first switch element determines whether to couple the first output port to the delay device according to a first control signal. The second switch element determines whether to couple the third output port to a ground voltage according to a second control signal.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: September 1, 2020
    Assignee: WISTRON CORP.
    Inventor: Chih Peng Lin
  • Patent number: 10739028
    Abstract: A thermostat for transmitting data wirelessly to a controller in a building includes a temperature sensor, a processing circuit, and a wireless radio. The processing circuit is configured to receive a measured temperature value from the temperature sensor, determine a current temperature error based on the current measured temperature value and a setpoint temperature, and determine whether a difference between the current temperature error and a previous temperature error is greater than an error threshold. The processing circuit is configured to determine whether a minimum amount of time has passed since transmitting a previous measured temperature value and transmit the current measured temperature value to the controller via the wireless transmitter in response to determining that both the difference between the current temperature error and the previous temperature error is greater than the error threshold and the minimum amount of time has passed since transmitting a temperature value.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: August 11, 2020
    Assignee: Johnson Controls Technology Company
    Inventors: Timothy I. Salsbury, Carlos Felipe Alcala Perez, Homero L. Noboa
  • Patent number: 10693561
    Abstract: A transmitting apparatus includes an optical modulator configured to modulate input light from a light source into a light signal including a carrier signal and a sideband signal based on a radio frequency (RF) signal, having polarization characteristics crossing each other, an optical power splitter configured to split the light signal into a plurality of light signals, a plurality of light phase shifters configured to respectively shift phases of the plurality of light signals, a plurality of polarization controllers configured to perform control so that a carrier signal and a sideband signal included in each of the phase-shifted plurality of light signals have the same polarization characteristic, and a plurality of photodetectors configured to convert the plurality of light signals, having polarization characteristics controlled by the plurality of polarization controllers, into a plurality of electrical signals and to transfer the electrical signals to a plurality of antenna elements.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: June 23, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwon Seob Lim, Hyun Seo Kang, Dae Seon Kim, Sang Jin Kwon
  • Patent number: 10677890
    Abstract: A radar apparatus for estimating position of a plurality of obstacles. The radar apparatus includes a receive antenna unit. The receive antenna unit includes a linear array of antennas and an additional antenna at a predefined offset from at least one antenna in the linear array of antennas. The radar apparatus also includes a signal processing unit. The signal processing unit estimates an azimuth frequency associated with each obstacle of the plurality of obstacles from a signal received from the plurality of obstacles at the linear array of antennas. In addition, the signal processing unit estimates an azimuth angle and an elevation angle associated with each obstacle from the estimated azimuth frequency associated with each obstacle.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 9, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sandeep Rao, Saurabh Khanna
  • Patent number: 10498039
    Abstract: Embodiments provide a base station, including an antenna unit and a radio frequency unit. A port corresponding to a receive channel that is of the radio frequency unit and in a working state and a port corresponding to a transmit channel that is of the radio frequency unit and in the working state are separately connected to ports corresponding to different dual-polarized dipoles or different single-polarized dipoles in the antenna unit. The different dual-polarized dipoles or the different single-polarized dipoles in the antenna unit are mutually isolated.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: December 3, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Liexun Feng, Tao Zhou
  • Patent number: 10483656
    Abstract: A dual-notch antenna includes a radiation member and two microstrip lines. The radiation member is formed in a rectangular shape, with two first lateral sides disposed in opposite, and two second lateral sides disposed on two ends of the two first sides, respectively. The middle section of each first lateral side is concavely provided with a notch. Each notch has a feeding side and two cove sides, wherein the feeding side is disposed in parallel to the first lateral sides. The two cove sides are connected with two ends of the feeding side. Each microstrip line has one end thereof electrically connected with the feeding side of the corresponding notch, respectively.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: November 19, 2019
    Assignee: CUBTEK INC.
    Inventors: San-Chuan Yu, Shyh-Jong Chung, Ching-Han Tsai, Bo-Yi Wang
  • Patent number: 10484107
    Abstract: A calibration network system for an array antenna and method for calibrating of the array antenna are described. The system includes a pair of rectangular waveguides stacked in parallel relation to each other and spaced apart at a distance of a quarter of an operating wavelength. The rectangular waveguides includes through-holes extending through a side-wall of the stacked rectangular waveguides from a bottom of a lower waveguide to a top of an upper waveguide to accommodate coaxial transmission lines. The side-wall has openings between the through-holes and an interior region of the rectangular waveguides in order to provide coupling of the coaxial transmission lines into the pair of rectangular waveguides. The system includes 90 degree phase shifter coupled to the upper rectangular waveguide, and a power divider/combiner coupled to a reference T/R Module, to the 90 degree phase shifter and to the lower rectangular waveguide.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: November 19, 2019
    Assignee: ELTA SYSTEMS LTD.
    Inventor: Yuri Feigin
  • Patent number: 10411359
    Abstract: A flight interference apparatus enabling it to block intrusion by a miniature unmanned aerial vehicle which is remotely piloted by radio communication into an area to be protected, suppress influence on communication within and outside the area, and reduce the number of required antenna devices. The flight interference apparatus includes one or a plurality of antenna devices which radiate a jamming signal from a directional antenna, and the directional antenna includes a radiating element which radiates a jamming signal of a predetermined frequency band and a reflector which gives directionality to the jamming signal in its radiation direction.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: September 10, 2019
    Assignee: PRODRONE CO., LTD.
    Inventor: Kiyokazu Sugaki
  • Patent number: 10382112
    Abstract: Apparatuses, methods, and systems for beamforming to multiple users using switched passive time-delay structures are disclosed. One method includes an input switch that receives a plurality of input signals for transmission. Further, the apparatus includes a plurality of passive time-delay structures, wherein the input switch selectively connects the plurality of input signals to at least one of the plurality of passive time-delay structures, and wherein each of the passive time-delay structures is preconfigured to provide a plurality of delayed signals wherein each of the plurality of delayed signals is a delayed version of a one of the plurality of input signals. The apparatus further includes an antenna array, wherein the antenna array receives the plurality of delayed signals of the passive time-delay structures, and generates a beamforming pattern corresponding with a selected one of the passive time-delay structures.
    Type: Grant
    Filed: June 16, 2018
    Date of Patent: August 13, 2019
    Assignee: Facebook, Inc.
    Inventor: Gordon Michael Coutts
  • Patent number: 10361775
    Abstract: A retro-directive antenna system on a mobile airborne platform for communication with a ground hub located within a coverage area. The system comprises an antenna array, a receive beamforming network, and a diagnostic processor. The antenna array comprises a plurality of antenna elements. The receive beamforming network generates concurrently a plurality of receive beams for the respective antenna elements. The receive beams correspond to respective beam positions within the coverage area. A first beam position points to the ground hub and a corresponding receive beam receives a target signal from the ground hub. The diagnostic processor determines a best position for the first beam position based on a ranking system and controls the receive beamforming network by updating the beam positions based on the best position for the first beam position.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: July 23, 2019
    Assignee: SPATIAL DIGITAL SYSTEMS, INC.
    Inventor: Donald C. D. Chang
  • Patent number: 10333603
    Abstract: The invention relates to a method for controlling digital-to-analog converters (DAC), the method comprising: providing a plurality of digital-to-analog converters (DAC) of a multi-channel converter array wherein each DAC includes a separate clock generator; generating, by each clock generator, a RF carrier signal; converting, by each DAC, digital data signals into analog RF data signals based on the carrier signals of the corresponding clock generators; providing a separate control signal for each clock generator wherein the control signals comprise control information such that when the control signals are applied to the corresponding clock generators the different analog RF data signals provided at respective output terminals of each DAC comprise a pre-defined phase shift to each other; controlling the clock generator of each DAC directly and independently based on the provided control signals. The invention further relates to a converter arrangement RF transmit circuit arrangement.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: June 25, 2019
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventor: Wolfgang Kufer
  • Patent number: 10212603
    Abstract: The invention is directed to a mobile communications system having improved spectral efficiency. The invention is further directed to methods and apparatus to achieve this improved spectral efficiency. In the mobile communications system communication with a plurality of mobile terminals is provided by a base station. Within the system terminals are adapted to communicate with one or more adjacent similar terminals to establish groups of terminals, called micro-cells. Each terminal within a micro-cell receives signals from the base station and then performs a first processing step on these signals. These processed signals are shared with all the other terminals within the micro-cell. Each terminal then performs a second processing step on the information it has received from all the other terminals within the micro-cell which enables it to derive a signal intended for reception by that terminal.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: February 19, 2019
    Assignee: Apple Inc.
    Inventors: James M. Naden, Chris Ward, Andrew W. Jeffries
  • Patent number: 10210134
    Abstract: An apparatus includes multiple parallel computing cores, where each computing core is configured to perform one or more processing operations and generate input data. The apparatus also includes multiple parallel coprocessors associated with each computing core. The apparatus further includes multiple communication lines configured to transport the input data from each computing core to a designated one of the coprocessors associated with each of the computing cores, where the coprocessors are configured to process the input data and generate output data. In addition, the apparatus includes multiple reducer circuits, where each computing core is associated with one of the reducer circuits. Each reducer circuit is configured to receive the output data from each of the coprocessors of the associated computing core, to apply one or more functions to the output data, and to provide one or more results to the associated computing core.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: February 19, 2019
    Assignee: Goldman Sachs & Co. LLC
    Inventors: Paul Burchard, Ulrich Drepper
  • Patent number: 10191220
    Abstract: The present invention generally relates to optical circuits for mitigating power loss in medical imaging systems and methods for using such circuits. Circuits of the invention can involve a first optical path, a second optical path, and a means for recombining an optical signal transmitted through the first and second optical paths by sequentially gating the first and second optical paths to a single output.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: January 29, 2019
    Assignee: VOLCANO CORPORATION
    Inventor: Nathaniel J. Kemp
  • Patent number: 10145933
    Abstract: Provided are a system and a method for determining an angle. The method includes: determining differences between signal strengths of incident waves received by a first directional antenna of an anchor node from a tested node and signal strengths of incident waves received by a second directional antenna of the anchor node from the tested node at multiple angles, wherein the first directional antenna and the second directional antenna are mounted at a same point, and an area formed by the first directional antenna is partially superposed with an area formed by the second directional antenna; and taking an angle corresponding to a minimum difference in the differences as an angle between a line connecting the anchor node and the tested node and a horizontal reference line. The present technical solution achieves the technical effect of positioning a target accurately when the positioning device is low in complexity.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: December 4, 2018
    Assignee: XI'AN ZHONGXING NEW SOFTWARE CO., LTD.
    Inventors: Chao Li, Wen Leng
  • Patent number: 10120063
    Abstract: A radar system includes a plurality of radiating elements configured to radiate electromagnetic energy and a plurality of feed waveguides defining a common plane and configured to guide electromagnetic energy to the plurality of radiating elements. The radar system also includes a plurality of waveguides arranged as a dividing network. The dividing network is also configured to split the electromagnetic energy from the source among the plurality of feed waveguides, such that each feed waveguide receives a respective portion of the electromagnetic energy. Additionally, the dividing network is configured to adjust a phase of the electromagnetic energy received by each waveguide. The splitting and adjusting of the dividing network may be based on differences in width between the waveguides of the dividing network and the feed waveguides. The dividing network of waveguides is located in the common plane of the feed waveguides.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: November 6, 2018
    Assignee: Waymo LLC
    Inventor: Jamal Izadian
  • Patent number: 10108580
    Abstract: An apparatus includes multiple parallel computing cores, where each computing core is configured to perform one or more processing operations and generate input data. The apparatus also includes multiple parallel coprocessors associated with each computing core. The apparatus further includes multiple communication lines configured to transport the input data from each computing core to a designated one of the coprocessors associated with each of the computing cores, where the coprocessors are configured to process the input data and generate output data. In addition, the apparatus includes multiple reducer circuits, where each computing core is associated with one of the reducer circuits. Each reducer circuit is configured to receive the output data from each of the coprocessors of the associated computing core, to apply one or more functions to the output data, and to provide one or more results to the associated computing core.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: October 23, 2018
    Assignee: Goldman Sachs & Co. LLC
    Inventors: Paul Burchard, Ulrich Drepper
  • Patent number: 10038246
    Abstract: Embodiments provide a base station, including an antenna unit and a radio frequency unit. A port corresponding to a receive channel that is of the radio frequency unit and in a working state and a port corresponding to a transmit channel that is of the radio frequency unit and in the working state are separately connected to ports corresponding to different dual-polarized dipoles or different single-polarized dipoles in the antenna unit. The different dual-polarized dipoles or the different single-polarized dipoles in the antenna unit are mutually isolated.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: July 31, 2018
    Assignee: Huawei Technologies Co., Ltd
    Inventors: Liexun Feng, Tao Zhou
  • Patent number: 10033086
    Abstract: A tilt adapter configured to facilitate a desired tilt of a first radio frequency (RF) band and a second RF band of an antenna is disclosed. The antenna supports two or more frequency bands, in which the vertical tilt of each of the supported frequency bands is separately controlled by a coarse level of phase shifting, but commonly controlled by a fine level of phase shifting.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: July 24, 2018
    Assignee: CommScope Technologies LLC
    Inventors: Guomin Ding, Martin L. Zimmerman
  • Patent number: 9819096
    Abstract: An antenna comprising a plurality of sub-arrays and methods and structure for restoring performance after a transceiver failure is provided. Each sub-array may include a power divider/combiner network, a first radiating element coupled to a first port of the power divider/combiner network, a second radiating element coupled to a second port of the power divider/combiner network, and a transceiver coupled to a third port of the power divider/combiner network. An adjustable power supply may be coupled to each transceiver, the adjustable power supply having current monitors to detect at least one failure state of a transceiver, and a power compensation mode to increase absolute power to a transceiver in a non-failed state. The adjustable power supply provides a first voltage in normal operation and a second voltage, where the second voltage is higher than the first voltage in power compensation mode.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: November 14, 2017
    Assignee: CommScope Technologies LLC
    Inventors: Jonathon C. Veihl, Simon H. Hamparian, Jonas Aleksa, Kevin E. Linehan
  • Patent number: 9806412
    Abstract: A variably controlled stagger antenna array architecture is disclosed. The array employs a plurality of driven radiating elements that are spatially arranged having each radiating element or element groups orthogonally movable relative to a main vertical axis. This provides a controlled variation of the antenna array's azimuth radiation pattern without excessive side lobe radiation over full range of settings.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: October 31, 2017
    Assignee: Intel Corporation
    Inventors: Gang Yi Deng, Alexander Rabinovich, Nando Hunt, John J. Dickson, John Stewart Wilson
  • Patent number: 9759807
    Abstract: A radar apparatus for estimating position of a plurality of obstacles. The radar apparatus includes a receive antenna unit. The receive antenna unit includes a linear array of antennas and an additional antenna at a predefined offset from at least one antenna in the linear array of antennas. The radar apparatus also includes a signal processing unit. The signal processing unit estimates an azimuth frequency associated with each obstacle of the plurality of obstacles from a signal received from the plurality of obstacles at the linear array of antennas. In addition, the signal processing unit estimates an azimuth angle and an elevation angle associated with each obstacle from the estimated azimuth frequency associated with each obstacle.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: September 12, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Sandeep Rao, Saurabh Khanna
  • Patent number: 9716315
    Abstract: A method includes pointing a receive beam of a retro-directive antenna array attracted to a jammer circuit instead of a remote transmitter away from the jammer circuit toward the remote transmitter by a first angle based on coarse manual means therefor implemented in electronic circuitry associated with the retro-directive antenna array. The electronic circuitry includes a number of mixers, each of which is configured to mix a Local Oscillator (LO) signal generated from a Voltage Controlled Oscillator (VCO) with a signal received at an antenna element of the retro-directive antenna array. The method also includes automatically fine pointing the receive beam toward the remote transmitter by a second angle following the coarse pointing thereof by the first angle such that the receive beam exactly points to, and tracks, the remote transmitter. The automatic fine pointing is effected through a secondary automatic servo loop implemented in the electronic circuitry.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: July 25, 2017
    Assignee: GigPeak, Inc.
    Inventors: Irshad Rasheed, Christopher T. Schiller
  • Patent number: 9577301
    Abstract: A feeding network is realized by dielectric phase shifting module. The module includes a dielectric device into which interlayer space is defined, a first conductor and a second conductor disposed side by side into the interlayer space and a third conductor located outside of the interlayer space and connected, at different locations, to one end, located at a same side, of each of the first and second conductors. Another end of the first conductor is defined as an input end, while another end of the second conductor and any end of the third conductor are all defined as output ends. The dielectric device is configured to slide along a longitudinal direction of the first and second conductors under external force so as to change phase of signals fed in from the input end and fed out from the output ends. Two dielectric phase-shift modules constitute a phase-shift unit thereof.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: February 21, 2017
    Assignee: COMBA TELECOM SYSTEM (CHINA) LTD.
    Inventors: Ming Cao, Peitao Liu, Shanqiu Sun
  • Patent number: 9559430
    Abstract: An antenna array includes a plurality of antenna elements configured in a flare such that each of the plurality of antenna elements is uniformly spaced apart from at least one adjacent antenna element. Each of the plurality of antenna elements is coupled in a common area, and each of the plurality of antenna elements extends radially outward from the common area. A method of arranging antenna elements in an antenna array includes configuring a plurality of antenna elements in a flare such that each antenna element is uniformly spaced apart from at least one adjacent antenna element, and each of the plurality of antenna elements extends radially outward from a common area; and coupling each of the plurality of antenna elements in the common area.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: January 31, 2017
    Inventor: John Howard
  • Patent number: 9553642
    Abstract: Embodiments are provided for cross-polarized antennas design with different down tilt angles that support versatile functionality, such as for MIMO or beamforming. An embodiment antenna circuit comprises a baseband signal processor, a pair of RF transmitters coupled to the baseband signal processor, a pair of PAs coupled to the RF transmitters, a 90°/180° hybrid coupler coupled to the RF transmitters, a pair of duplexers and two antennas coupled to the PAs. The two antennas are down tilted at different down tilt angles. A pair of signals is generated using the baseband signal processor, transmitted by the RF transmitters, and amplified using the PAs. Additionally, a 90° or 180° phase difference is introduced into the signals using the 90°/180° hybrid coupler. After the amplifying and introducing the phase difference, the signals are polarized at two different polarizations and down tilted at different down tilt angles using the two antennas.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: January 24, 2017
    Assignee: Futurewei Technologies, Inc.
    Inventors: Zhengxiang Ma, Leonard Piazzi, Renjian Zhao, Jian Wang
  • Patent number: 9537212
    Abstract: An antenna array system for directing and steering an antenna beam is described in accordance with the present invention. The antenna array system may include a feed waveguide having a feed waveguide length, at least two directional couplers in signal communication with the feed waveguide, at least two pairs of planar coupling slots along the feed waveguide length, and at least two horn antennas.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: January 3, 2017
    Assignee: THE BOEING COMPANY
    Inventors: Harold A. Rosen, Paul J. Tatomir, Parthasarathy Ramanujam, Sasha J. Courtade, Joshua Maxwell Rutheiser
  • Patent number: 9525450
    Abstract: A transceiver arrangement has a circuit board with a transmit path and a receive path, a transceiver transmit output coupled with the transmit path, a transceiver receive input coupled with the receive path, and a loopback path. The loopback path couples the transceiver transmit output and the transceiver receive input and comprises a waveguide.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: December 20, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Mario Costa
  • Patent number: 9494450
    Abstract: A method is disclosed for calibrating a trigger unit which is connected via a trigger line to at least two sensors configured to be triggered. Each sensor is connected between two successive line portions of the trigger line. Each sensor has an input and an output, a controllable interrupter between the input and output; and a control circuit, which controls the interrupter. The interrupters of all sensors are initially open. The method comprises the following: transmitting a trigger pulse; in the sensor: receiving the trigger pulse and returning a response; in the trigger unit: receiving the response and calibrating the trigger unit; repeating the aforementioned steps, wherein each sensor reflects the trigger pulse, and the trigger unit measures the propagation times and is calibrated thereto.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: November 15, 2016
    Assignee: Kapsch TrafficCom AG
    Inventor: Oliver Nagy
  • Patent number: 9496610
    Abstract: An optically controlled microwave antenna that reduces optical power consumed by the antenna. The optically controlled microwave antenna includes an antenna array including plural antenna elements and a feed for illuminating the antenna array with and/or receiving microwave radiation of the operating frequency from the antenna array to transmit and/or receive microwave radiation. An antenna element includes a waveguide, an optically controllable semiconductor element arranged within the waveguide in front of a light transmissive portion of a second end portion, the semiconductor element changing its material properties under control of incident light, and a controllable light source arranged at or close to the light transmissive portion of the second end portion for projecting a controlled light beam onto the semiconductor element for controlling its material properties, in particular its reflectivity.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: November 15, 2016
    Assignee: Sony Corporation
    Inventor: Marcel Daniel Blech
  • Patent number: 9496612
    Abstract: A transmission system and method for use in a mobile communication network comprising an active antenna arrangement of multiple antennas. The active antenna arrangement comprising several pairs of radiofrequency sub-modules each radiofrequency sub-module including a first phase shifter module, a TRX module and a radiating antenna element and where an dynamic phase offset is applied to one of the sub-modules of each pair, and where the phase offset vector is selected according to the signal quality received by users of the mobile communication network using an algorithm which minimizes the duration of the selection process.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: November 15, 2016
    Assignee: Vodafone IP Licensing Limited
    Inventors: Yannick Le Pezennec, Javier Lopez Roman, Brendan McWilliams
  • Patent number: 9496604
    Abstract: The invention relates to a device for receiving signals in a MIMO system comprising: m signal receiver channels, where m is greater than 1; an antenna system constituted either by n directive antennae n>m, each antenna being able to receive signals in one of its own angular sectors, the angular sectors of the n antennae essentially not overlapping each other and together thrilling a total angular sector of 360 degrees, or a multi-sector antenna with n angular sectors n>m the n angular sectors essentially not overlapping each other and having a distinct access; and switching means to associate with each signal receiver channel an antenna from among the n antennae according to a switching schema selected by control means, the switching schema being selected from a plurality of switching schemas of a switching matrix according to a criterion representing the quality of the reception of the signals by said signal receiver channels.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: November 15, 2016
    Assignee: Thomson Licensing
    Inventors: Jean-Luc Robert, Ali Louzir, Dominique Lo Hine Tong, Jean-Yves Le Naour
  • Patent number: 9479232
    Abstract: The various embodiments presented herein relate to beam steering an array antenna by modifying intermediate frequency (IF) waveforms prior to conversion to RF signals. For each channel, a direct digital synthesis (DDS) component can be utilized to generate a waveform or modify amplitude, timing and phase of a waveform relative to another waveform, whereby the generation/modification can be performed prior to the IF input port of a mixer on each channel. A local oscillator (LO) signal can be utilized to commonly drive each of the mixers. After conversion at the RF output port of each of the mixers, each RF signal can be transmitted by a respective antenna element in the antenna array. Initiation of transmission of each RF signal can be performed simultaneously at each antenna. The process can be reversed during receive whereby timing, amplitude, and phase of the received can be modified digitally post ADC conversion.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: October 25, 2016
    Assignee: Sandia Corporation
    Inventors: Hung Loui, Billy C. Brock
  • Patent number: 9407301
    Abstract: An angle diversity receiving device performs angle diversity reception by configuring branches of angle diversity in accordance with received signals of an array antenna, the angle diversity receiving device being provided with: a plurality of phased array synthesizing unit that generates a received signal of a branch by performing phased array synthesis for the received signals of a plurality of antenna elements included in the array antenna; and a correlation control unit that outputs a correlation value for the received signals of two branches; wherein the phased array synthesizing unit controls the angular difference in the orientations of the branches for which the correlation value was computed so that the correlation value decreases.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: August 2, 2016
    Assignee: NEC CORPORATION
    Inventor: Ichiro Tsujimoto
  • Patent number: 9395708
    Abstract: A method for adaptively and automatically adjusting a sampling rate in a feedback control system includes monitoring an error signal for a disturbance event, evaluating the error signal in response to the disturbance event to estimate a time constant of a control process, and determining a sampling rate for use in the feedback control system based on the estimated time constant. The error signal may be based on a difference between a setpoint and a feedback signal and the feedback signal may be received from the control process.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: July 19, 2016
    Assignee: Johnson Controls Technology Company
    Inventors: Carlos Felipe Alcala Perez, Timothy I. Salsbury
  • Patent number: 9368871
    Abstract: A fractional beam forming network antenna includes a beam forming network and a plurality of antennas. The network includes input ports, output ports, and at least one delay device. The beam forming network couples input ports to the output ports through the at least one delay device. The antennas are vertically disposed relative to each other, and coupled to the output ports. At least two of the antennas include a different elevation tilt and/or azimuth rotation relative to each other. A method of fractional beam forming is provided, which includes coupling, using a beam forming network, input ports to output ports through at least one delay device; disposing a plurality of antennas vertically relative to each other; coupling the antennas to the output ports; and rotating at least two of the antennas in different elevation and/or different azimuth relative to each other.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: June 14, 2016
    Inventor: John Howard
  • Patent number: 9363794
    Abstract: A hybrid antenna structure allows the antenna to be used internally or mostly internally in a portable radio communication device operating in the VHF range. The hybrid antenna structure includes a switching circuit that connects an RF circuit to one of several points along the length of a wrapped conductor element, depending on the selected operating frequency. An inductive matching tail element is adjustably tuned to match the selected tap point on the wrapped conductor for the selected operating frequency.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: June 7, 2016
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Alexander Chin Keong Oon, Giorgi Bit-Babik, Teik Yang Goh, Hiang Yaol Derrick Lim
  • Patent number: 9331764
    Abstract: Provided is an interference aligning method and apparatus that does not perform full feed-forwarding in a hierarchical cell communication. A macro base station may generate respective transmission beamforming vectors of macro terminals to null interference channels to pico terminals and to remove interference among the macro terminals. The effective interference channels are based on reception beamforming vectors of the pico terminals. The macro base station may transmit, to a macro terminal, a feed-forward indicator (FFI) indicating a method of transmitting information associated with a reception beamforming vector of the macro terminal. The macro terminal may obtain information associated with the reception beamforming vector based on the FFI.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: May 3, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Won Jae Shin, Nam Yoon Lee, Won Jong Noh, Hyun Ho Choi, Chang Yong Shin, Kyung Hun Jang
  • Patent number: 9331775
    Abstract: A method (50) for detecting broadcast signals, transmitted by terrestrial sources (40) and received by a satellite (20), in individual signals obtained respectively from different individual antennas (24) of an antenna array (22) of the satellite, includes a first detection iteration (51a) and a second detection iteration (51b), each of the first and second detection iterations including a step (52) of forming, from the individual signals, virtual beams of different respective main radiation directions, and a step of searching for the presence of broadcast signals in the virtual beams. Furthermore, for at least one broadcast signal detected during the first detection iteration, the respective contributions of the at least one detected broadcast signal to the different individual signals are attenuated, relative to the first detection iteration, for all or part of the virtual beams formed during the second detection iteration. A system (10) for detecting broadcast signals is also described.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: May 3, 2016
    Assignee: AIRBUS DEFENCE AND SPACE SAS
    Inventors: Mathieu Picard, Alexandre Mege
  • Patent number: 9270354
    Abstract: Described is system and method for blind beamforming using knowledge embedded in transmitted signals. Initial antenna weights are assigned for antenna elements of emitters of a beamforming system to generate a set of weighted radio-frequency (RF) signals at an output of each antenna element. The set of weighted RF signals are combined to form RF signal mixtures. Then, each RF signal mixture is processed to extract embedded information within signals of the emitters. The extracted embedded information is sent to an optimization module, where the extracted embedded information is used to perform simultaneous signal extractions for emitters in the beamforming system. Furthermore, feedback from the optimization module is used to modify antenna weights toward optimal beamforming.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: February 23, 2016
    Assignee: HRL Laboratories, LLC
    Inventors: Vikas Kukshya, Yuri Owechko
  • Patent number: 9209525
    Abstract: A directive electrically small antenna (DESA) process and method employs multipole synthesis to implement directive electrically small multipole antennas with ultra-wideband (UWB) stable antenna patterns. Although lossy, embodiments have adequate efficiency to work as receive antennas in the high ambient noise environment of the HF band and below. Employing a process dubbed “antenna regeneration,” energy may be circulated within an antenna by means other than resonance. This enables multiple decade UWB response without the efficiency penalties inherent to traditional resistively-loaded antenna systems. Regenerative antennas can simultaneously achieve the performance of high Q resonant antennas and the bandwidth of resistively loaded antennas.
    Type: Grant
    Filed: April 1, 2012
    Date of Patent: December 8, 2015
    Assignee: Q-Track Corporation
    Inventors: Hans Gregory Schantz, Robert Edward DePierre
  • Patent number: 9190717
    Abstract: A radar sensor including an antenna array having multiple antenna elements situated next to one another and at least one feeding point at an outer antenna element. The antenna elements are connected in series via delay lines. The radar sensor has at least two transmitting and receiving units which are each suitable for generating and evaluating a radar signal at a predefined frequency. The at least two transmitting and receiving units are connected to a feeding point of the antenna array. The frequencies of the radar signals of the at least two transmitting and receiving units are predefinable independently of one another.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: November 17, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Thomas Schoeberl, Reinhard Meschenmoser, Arne Zender, Thomas Hansen, Joerg Hilsebecher, Karl Nesemann, Oliver Lange
  • Patent number: 9172569
    Abstract: A phased array transmitter is disclosed comprising a vector modulator, a true time delay block coupled to the vector modulator, a local oscillator phase shifter and RF-converter block coupled to the true time delay block, and an antenna. The vector modulator applies vector modulation to a baseband signal and provides an intermediate frequency signal to the true time delay block. The true time delay block applies a true time delay to the intermediate frequency signal and provides a delayed intermediate frequency signal to the local oscillator phase shifter and RF-converter block. The local oscillator phase shifter and RF-converter block multiplies the delayed intermediate frequency signal by a local oscillator signal and applies a phase shift to the delayed intermediate frequency signal to provide a radio frequency signal to the antenna for onwards transmission.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: October 27, 2015
    Assignee: NXP, B.V.
    Inventors: Dominicus Martinus Wilhelmus Leenaerts, Yu Pei, Ying Chen
  • Patent number: 9166290
    Abstract: An optically controlled microwave antenna that reduces the optical power consumed by the antenna and to enable polarimetric detection an optically controlled microwave antenna comprises an antenna array and a feed for illuminating said antenna array with and/or receiving microwave radiation. The antenna array comprises a plurality of antenna elements each including a waveguide, two optically controllable semiconductor elements arranged within the waveguide in front of the light transmissive portion of the second end portion, a controllable light source arranged at or close to the light transmissive portion of the second end portion for projecting a controlled light beam onto said semiconductor element for controlling its material properties, and a septum arranged within the waveguide in front of the light transmissive portion of the second end portion and separating said waveguide into two waveguide portions.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: October 20, 2015
    Assignee: Sony Corporation
    Inventor: Marcel Blech
  • Patent number: 9140772
    Abstract: A system and method for providing a range (distance) measurement by measuring electromagnetic signal time of flight. The system provides an estimate of the quality of the range measurement by evaluation of the multipath environment based on signal characterization. In one embodiment, a received ultra wideband signal is evaluated by a scanning receiver to produce a channel scan waveform inclusive of the transmitted signal and multipath response. The channel scan waveform is evaluated for envelope rise rate, amplitude, leading edge direct path pulse time, saturation, blockage, and signal history characterization. Signal characteristics are used to determine a signal classification. Signals are then evaluated for quality based on the signal classification. In one embodiment, the signal quality is used to estimate a variance of the range estimate for use in navigation algorithms.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: September 22, 2015
    Assignee: TDC Acquisition Holdings, Inc.
    Inventors: Brandon Scott Dewberry, William Clyde Beeler
  • Patent number: 9124361
    Abstract: Embodiments of the concepts described herein are directed toward a common RF building block in the form of a monolithic assembly for an AESA array featuring a scalable RF design based on 2n:3 combining. The monopulse network building blocks are substantially identical, enabling an interchangeable sub-array architecture that is independent of position in the AESA aperture and receive sum channel sidelobe performance. In one embodiment, a passive Monopulse Beamformer may provide the passive 2n:3 RF coupling/combining network and an active Monopulse Processor may perform amplitude and phase weighting for the combined signals from the Monopulse Beamformer.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: September 1, 2015
    Assignee: Raytheon Company
    Inventors: Angelo M. Puzella, Tunglin L. Tsai, John B. Francis, Donald A. Bozza, Kathe I. Scott, Patricia S. Dupuis
  • Patent number: 9123999
    Abstract: The invention relates to an imaging system having a reflect array for reflection of radiation such as millimeter-wave radiation. It can apply to imaging systems which operate over a wide range of wavelengths.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: September 1, 2015
    Assignees: SMITHS DETECTION IRELAND LIMITED, MSC VERTRIEBS GMBH
    Inventors: Martin Schneider, Michael Crowley, Brendan Lyons, David O'Driscoll, Klaus-Michael Hussmann
  • Patent number: 9041602
    Abstract: A phased array transmitter includes a plurality of vector modulators, an in-phase/quadrature (I/Q) signal generator, and a multiphase generator. The output phases of the plurality of vector modulators, and hence the direction of transmission of the phased array transmitter, are set and controlled by adjusting both the magnitude ratios of I/Q signal pairs generated by the I/Q signal generator and applied to I and Q inputs of the plurality of vector modulators and phases of a plurality of local oscillator (LO) signal phases generated by the multiphase generator and applied to LO inputs of the plurality of vector modulators.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: May 26, 2015
    Inventor: Earl W. McCune, Jr.
  • Patent number: 9014619
    Abstract: A satellite communications system includes a satellite configured to communicate with terminals, a station configured to communicate signals intended for the terminals to the satellite via a plurality of feeder links and a beamformer including an input multi-port hybrid matrix (MPHM) and a complementary output MPHM in a signal path with the plurality of feeder links. The output MPHM is positioned at the satellite and coupled to the input MPHM via the plurality of feeder links. For example, the input MPHM may be positioned at a ground-based satellite gateway. The input and output MPHMs may be configured to implement fully populated signal transformation matrices that collectively provide a substantially diagonal signal transformation matrix.
    Type: Grant
    Filed: May 22, 2007
    Date of Patent: April 21, 2015
    Assignee: ATC Technologies, LLC
    Inventors: Ted Benjamin, Matthew Griffin, William W. Chapman
  • Patent number: 8976066
    Abstract: A beam-forming antenna for transmission and/or reception of an electromagnetic signal having a given wavelength in a surrounding medium includes a transmission line electromagnetically coupled to an array of individually controllable antenna elements, each of which is oscillated by the signal with a controllable amplitude. The oscillation amplitude of each of the individual antenna elements is controlled by a switch. The antenna elements are arranged in various shapes such as a parabolic arc, a circular arc, a cylindrical surface or a conic surface. The antenna elements have various spacing such as uniform, parabolic, circular, or raised cosine.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: March 10, 2015
    Assignee: Sierra Nevada Corporation
    Inventors: Vladimir A. Manasson, Lev S. Sadovnik