Testing Or Calibrating Of Radar System Patents (Class 342/165)
  • Patent number: 10791965
    Abstract: A method for determining a rate of repetitive bodily motion of an individual with negligible contact with the individual begins by one or more computing devices transmitting a signal for reflection off of the individual and receiving a reflected signal. The method continues with one or more computing device applying a frequency estimation algorithm to the baseband signal to produce an estimated spectral density, where the estimated spectral density is in frequency domain and includes at least one frequency component corresponding to the repetitive bodily motion. The method further includes applying a repetitive bodily motion pattern search function to the estimated spectral density to estimate the rate of the repetitive bodily motion of the individual based on the at least one frequency component.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: October 6, 2020
    Inventor: Sayfe Kiaei
  • Patent number: 10715261
    Abstract: A method and apparatus for providing feedback for cancellation of signal impairment in a plurality of separate transmit paths of a transmitter are disclosed. According to one aspect, a method includes receiving a plurality of outbound signals transmitted to the antenna array, the received outbound signals having traversed separate transmit paths of the transmitter. The method also includes converting the plurality of received outbound signals to a corresponding plurality of parallel baseband signals. The corresponding plurality of parallel baseband signals are serialized into a serial feedback signal.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: July 14, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Slim Ben Ghalba
  • Patent number: 10690766
    Abstract: A wideband RADAR system and method is provided for biometric identification and authentication of a human subject. The system includes a source of wideband RADAR signals, an amplifier, and a splitter in electrical communication with the source of wideband RADAR signals and configures to split a generated signal into a transmit signal and a reference transmit signal. A transmitting antenna is configured to transmit the transmit signal from the splitter toward a turntable configured to rotate the human subject. A receiving antenna is configured to receive transmitted signals reflected from the human subject. A controller is configured to process the received reflected signals and generate polar representations of biometric radar signature features to compare against known signatures of human subjects.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: June 23, 2020
    Assignee: Government of the United States, as represented by the Secretary of the Air Force
    Inventors: Analee M Miranda, Loria L Wang, Stephanie R Keith
  • Patent number: 10680327
    Abstract: A calibration system for calibrating an antenna array comprising antenna elements comprises a measuring unit, and a calibration antenna connected to the measuring unit. The measuring unit sequentially excites each antenna element of the antenna array with an input signal and receives the corresponding output signal through the calibration antenna. Furthermore, the measuring unit measures a transfer function of each antenna element of the antenna array.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: June 9, 2020
    Assignee: ROHDE & SCHWARZ GMBH & CO. KG
    Inventors: Adam Tankielun, Corbett Rowell, Hendrik Bartko
  • Patent number: 10613193
    Abstract: A radar and communication (RadCom) system and a method for vehicles using a fast chirp signal are provided. A radar system includes a phase locked loop (PLL) configured to generate a radar signal, a signal generator configured to generate a communication signal and a mixer configured to mix the radar signal and the communication signal. The system also includes a transmitter configured to transmit an output signal from the mixer, a first switch configured to switch not to transmit the communication signal to the mixer in a radar mode, and a second switch configured to switch to connect a first filter to the PLL when the radar mode ends. Accordingly, RadCom transmission and reception using the fast chirp signal is possible.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: April 7, 2020
    Assignee: Korea Electronics Technology Institute
    Inventors: Ki Jin Kim, Kwang Ho Ahan
  • Patent number: 10605896
    Abstract: A first data group, which indicates reflection wave intensities from reflection points for radar directions indicating directions in which the corresponding reflection points exist relative to a radar apparatus and distances from the radar apparatus to the reflection points, and a second data group, which indicates Doppler velocities of the reflection points for the radar directions and the distances from the radar apparatus to the reflection points, are used to generate a third data group, which indicates the reflection wave intensities of the reflection points. A radar moving direction relative to a moving direction of the vehicle for each frame is generated based on the third data group. The radar moving direction when the moving direction of the vehicle is straight ahead is estimated using the radar moving direction in a predetermined number of frames, and the radar installation angle is calculated using the estimated radar moving direction.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: March 31, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yunyun Cao, Hirofumi Nishimura, Asako Hamada, Hiroshi Iwamura
  • Patent number: 10608317
    Abstract: A communication system, which is applied to a space, includes a first transceiver and a communication device. The first transceiver is fixedly disposed in the space. The communication device is movable in the space. The communication device includes a base, a second transceiver, a detection circuit, an arm and a processor. The second transceiver is oriented to an orientation and configured to build a signal transmission with the first transceiver. The detection circuit is configured to detect a displacement or rotation of the communication device with respect to the first transceiver, in order to generate detection information. One end of the arm is connected to the base, and another end of the arm is connected to the second transceiver. The processor is configured to control an operation of the arm according to the detection information, in order to maintain the orientation of second transceiver directing to the first transceiver.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: March 31, 2020
    Assignee: HTC Corporation
    Inventors: Ta-Chun Pu, Chieh-Sen Lee, Chien-Ting Ho, Yen-Liang Kuo
  • Patent number: 10602373
    Abstract: Holographic beamforming antennas may be utilized for adaptive routing within communications networks, such as wireless backhaul networks. Holographic beamforming antennas may be further utilized for discovering and/or addressing nodes in a communication network with steerable, high-directivity beams. Holographic beamforming antennas may be further utilized for extending the range of communications nodes and providing bandwidth assistance to adjacent nodes via dynamic adjacent cell assist. In some approaches, MIMO is used in concert with holographic beamforming for additional channel capacity.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: March 24, 2020
    Assignee: The Invention Science Fund I, LLC
    Inventors: Eric J. Black, Brian Mark Deutsch, Russell J. Hannigan, Alexander Remley Katko, Melroy Machado, Jay Howard McCandless, Yaroslav A. Urzhumov
  • Patent number: 10601141
    Abstract: An artificial magnet conductor includes a dielectric medium, basic cells, each being formed on a side of a front surface of the dielectric medium, and including a conductive patch pattern and a conductive loop pattern formed with a predetermined gap with the conductive patch pattern, a frequency selective surface on which the basic cells are periodically arranged on the front surface of the dielectric medium, and a conductive layer formed on a side of a rear surface of the dielectric medium. A phase change from an incident wave to a reflected wave with respect to the dielectric medium is set as an addition value in which a first phase change in the gap is added to a second phase change between the basic cell of the dielectric medium and the conductive layer. A thickness of the dielectric medium is calculated using the addition value.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: March 24, 2020
    Assignee: Yamaha Corporation
    Inventor: Akihiro Kawata
  • Patent number: 10595210
    Abstract: Holographic beamforming antennas may be utilized for adaptive routing within communications networks, such as wireless backhaul networks. Holographic beamforming antennas may be further utilized for discovering and/or addressing nodes in a communication network with steerable, high-directivity beams. Holographic beamforming antennas may be further utilized for extending the range of communications nodes and providing bandwidth assistance to adjacent nodes via dynamic adjacent cell assist. In some approaches, MIMO is used in concert with holographic beamforming for additional channel capacity.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: March 17, 2020
    Assignee: The Invention Science Fund I, LLC
    Inventors: Eric J. Black, Brian Mark Deutsch, Russell J. Hannigan, Alexander Remley Katko, Melroy Machado, Jay Howard McCandless, Yaroslav A. Urzhumov
  • Patent number: 10502812
    Abstract: A marker used to detect an axial deviation of a radio wave axis Ar of a radar unit is provided in front of the radar unit and outside a radar field of view range set based on a field of view angle ? of the radar unit on a vehicle. A relative position between the radar unit and the marker is different between before and after an axial deviation of the radio wave axis Ar of the radar unit occurs. Thus, an axial deviation (an amount ?? of axial deviation in an azimuth direction and an amount ?? of axial deviation in an elevation angle direction) of the radio wave axis Ar of the radar unit can be detected by obtaining a difference in marker detection position before and after the axial deviation by the radar unit.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: December 10, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Satoshi Fujii, Haruhiko Nishiguchi, Daisuke Kubota, Ryohsaku Arakawa, Idhsada Sanguanwongthong, Kei Oshida
  • Patent number: 10473759
    Abstract: A method and apparatus for determining a distance between a first radar system disposed on a vehicle and a second radar system disposed on the vehicle. A target reflector is moved along a track to a location along a perpendicular bisector of a baseline connecting the first radar system and the second radar system. A direct range measurement is obtained for at least one of the first radar system and the second radar system, and a bistatic range measurement is obtained between the first radar system and the second radar system. A processor determines the distance between the first radar system and the second radar system using the direct range measurement, the bistatic range measurement and a radial length of the target reflector.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: November 12, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Igal Bilik, Alexander Pokrass, Shahar Villeval
  • Patent number: 10458811
    Abstract: An apparatus and method for aligning, calibrating, or inspecting an onboard vehicle sensor having an external field of view by providing a calibration component on a support structure for positioning at a short calibration distance of said sensor. The calibration component is configured to appear to the sensor as if it was positioned at a predetermined linear calibration distance from the vehicle which is greater than the actual short calibration distance.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: October 29, 2019
    Assignee: Hunter Engineering Company
    Inventors: David A. Voeller, Gerald E. Friton, Timothy A. Strege, Patrick Callanan
  • Patent number: 10416013
    Abstract: A measurement apparatus 100 comprises a measurement unit 10 to propagate, using sensors 11 and 12 provided in a pipe 99, a measurement wave in a medium 98 flowing through the pipe and receive the measurement wave, a trigger detecting section 21 to detect whether or not a level of the received measurement wave exceeds a predetermined trigger level, and a specifying section 22 to specify a reception timing of the measurement wave based on a waveform part in a period of the received measurement wave different from a period in which the level of the received measurement wave exceeds the trigger level.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: September 17, 2019
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Shingo Noguchi, Masami Kishiro
  • Patent number: 10419083
    Abstract: Embodiments of the disclosure relate to a massive multiple-input multiple-output (M-MIMO) wireless distribution system (WDS) and related methods for optimizing the M-MIMO WDS. In one aspect, the M-MIMO WDS includes a plurality of remote units each deployed at a location and includes one or more antennas to serve a remote coverage area. At least one remote unit can have a different number of the antennas from at least one other remote unit in the M-MIMO WDS. In another aspect, a selected system configuration including the location and number of the antennas associated with each of the remote units can be determined using an iterative algorithm that maximizes a selected system performance indicator of the M-MIMO WDS. As such, it may be possible to optimize the selected system performance indicator at reduced complexity and costs, thus helping to enhance user experiences in the M-MIMO WDS.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: September 17, 2019
    Assignee: Corning Incorporated
    Inventors: Xiaojun Liang, Anthony Ng'Oma
  • Patent number: 10405195
    Abstract: A system and method are disclosed for determining a location to position an RF signal repeater within a structure, based on the position having the highest probability of being the location of the highest probable RF signal strength.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: September 3, 2019
    Assignee: Nextivity, Inc.
    Inventor: Michiel Petrus Lotter
  • Patent number: 10396839
    Abstract: A system using multiple communication technologies for concurrent communication is disclosed. The system includes a loopback receiver, a receiver, and a noise remover component. The loopback receiver is configured to obtain a coupled signal and generate a noise signal from the coupled signal. The noise signal includes direct transmission noise. The receiver is configured to receive a chain receive signal and to provide a receive signal therefrom. The noise remover component is configured to generate a wanted receive signal from the noise signal and the receive signal.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: August 27, 2019
    Assignee: Intel IP Corporation
    Inventors: Emanuel Cohen, Nati Dinur
  • Patent number: 10396860
    Abstract: A system and method is described for automated system health status determination, performance calibration, and configuration of a plurality of wireless identification (wireless ID) transceivers (or receivers) to prevent cross-receptions of wireless ID tags in adjacent wireless signal reception areas. Test wireless ID tags are positioned within the wireless signal reception area associated with each of the wireless ID antennas. The configuration parameters for each wireless ID transceiver are adjusted until only data from test wireless ID tags within the wireless signal reception area of the wireless ID antennas associated with that wireless ID transceiver are received by that wireless ID transceiver. Each wireless ID transceiver is configured with the configuration parameters that result in only data from the test wireless ID tags within the wireless signal reception area of the wireless ID antennas associated with that test wireless ID transceiver being received by that wireless ID transceiver.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: August 27, 2019
    Assignee: The Boeing Company
    Inventors: Payal Shah, Navpreet Singh, Michael D. McInnis
  • Patent number: 10371809
    Abstract: A radar apparatus is attached to a vehicle such that a direction at 90 degrees relative to a front-rear direction of the vehicle is included in a detection range, and transmits and receives radar waves. The radar apparatus detects an observation point relative speed that is a relative speed in relation to an observation point that has reflected the radar wave within the detection range and an observation point azimuth that is an azimuth at which the observation point is present. The radar apparatus determines that a moving object is detected when an expression expressed by V<Vs·sin ((?-?) is satisfied, where ? is an attachment angle that is an angle at which a center axis of a reception antenna receiving the radar wave is angled in relation to a width direction of the vehicle, V is the observation point relative speed, ? is the observation point azimuth, and Vs is a traveling speed of the vehicle.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: August 6, 2019
    Assignee: DENSO CORPORATION
    Inventors: Miki Satou, Yasuyuki Miyake
  • Patent number: 10297915
    Abstract: Signals are received from antenna elements in an antenna array, and respective phase shifts are applied to the received signals. The respective phase shifts are relative to a channel phase shift associated with each antenna element, and correspond to side angles from a current antenna beam direction of the antenna array. Control signals based on the phase shifted signals are generated to control the channel phase shifts, to provide beamforming tracking.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: May 21, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Ming Jian, Taiwen Tang, Wenyao Zhai
  • Patent number: 10264996
    Abstract: A method for determining a rate of repetitive bodily motion of an individual with negligible contact with the individual begins by one or more computing devices transmitting a signal for reflection off of the individual, receiving a reflected signal, and down-converting the reflected signal to a baseband signal. The method continues with one or more computing device applying a frequency estimation algorithm to the baseband signal to produce an estimated spectral density, and applying a repetitive bodily motion pattern search function to the estimated spectral density to estimate the rate of the repetitive bodily motion of the individual.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: April 23, 2019
    Inventor: Sayfe Kiaei
  • Patent number: 10234542
    Abstract: Methods for monitoring of performance parameters of one or more receive channels and/or one or more transmit channels of a radar system-on-a-chip (SOC) are provided. The radar SOC may include a loopback path coupling at least one transmit channel to at least one receive channel to provide a test signal from the at least one transmit channel to the at least one receive channel when the radar SOC is operated in test mode. In some embodiments, the loopback path includes a combiner coupled to each of one or more transmit channels, a splitter coupled to each of one or more receive channels, and a single wire coupling an output of the combiner to an input of the splitter.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: March 19, 2019
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Karthik Subburaj, Brian Paul Ginsburg, Daniel Colum Breen, Sandeep Rao, Karthik Ramasubramanian
  • Patent number: 10211903
    Abstract: An apparatus for transmitting simultaneous multiple beams to targets at near and far fields includes: a communication unit consisting of a plurality of unit cells, and configured to communicate a signal or power via antennas provided in each of the unit cells; and a control unit configured to calculate a phase of a voltage applied to the antennas so as to simultaneously transmit the power or signal to the targets at the near and far fields.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: February 19, 2019
    Assignee: Hongik University Industry-Academia Cooperation Foundation
    Inventors: Jeong-Hae Lee, Sun-Gyu Lee, Jae-Gon Lee, Chang-Hyun Lee, Sang Wook Chi
  • Patent number: 10209347
    Abstract: Radar testing systems with radar system rotational systems and methods for using the radar testing systems are disclosed. A radar testing system includes a radar system to be tested, a computer, and a radar simulator. A radar sensor rotation system mechanically coupled to a radar sensor of the radar system is communicatively coupled to the computer and configured to rotate the radar sensor to predefined and desired angles for predetermined amounts of time during testing of the radar system.
    Type: Grant
    Filed: February 10, 2016
    Date of Patent: February 19, 2019
    Assignee: FEV NORTH AMERICA, INC.
    Inventors: Soumendu Chanda, Martin Pischinger
  • Patent number: 10185330
    Abstract: To simplify the process of adjusting travel sensor alignments on process control valves, a method and system generates a graphical interface to display alignment information to a user or operator. The graphical interface visualizes the state of alignment between a feedback element and a sensing element that comprise a magnetic travel sensor on a process control valve. Using the graphical interface, the user or operator can easily determine whether the alignment between the feedback element and the sensing element is proper or correct. The graphical interface also provides information on whether or not physical adjustments are needed in order to fix detected alignment problems so that impending failures can be avoided and optimal performances can be achieved. In this manner, the method and system improves the reliability and accuracy of valve travel feedback.
    Type: Grant
    Filed: June 30, 2014
    Date of Patent: January 22, 2019
    Assignee: FISHER CONTROLS INTERNATIONAL LLC
    Inventors: Jimmie L. Snowbarger, Perry K. Carter
  • Patent number: 10162042
    Abstract: Methods and devices for coding and communicating geographical position. The sending device quantizes the geographical coordinate system and sends its position as the delta or remainder after quantization. The receiving device determines its own quantized position and disambiguates between possible quantized coordinate positions of the sending device to identify the sending device's actual quantized coordinate position. From this, the receiving device determines the position of the sending device using the identified actual quantized coordinate position and the delta position data sent by the sending device. The receiving device may then trigger an action based on the determined position of the sending device.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: December 25, 2018
    Assignees: BlackBerry Limited, 2236008 Ontario Inc.
    Inventors: David Flynn, Gaëlle Christine Martin-Cocher
  • Patent number: 10164334
    Abstract: A method for antenna calibration is disclosed, the method including driving calibration signals for antenna array beam calibration to an antenna array feeder line in a transceiver front end unit by using one or more directional couplers and/or radio frequency probes, wherein calibration signal paths are integrated inside the transceiver front end unit. Measurements are carried out on the calibration signals, between different antenna combinations inside the antenna array. Based on collected measurement data, calibration information is calculated for each measurement branch of the antenna array by using a mathematical formula. Active antenna array beam calibration is then performed based on the calculated calibration information.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: December 25, 2018
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Jukka Kareisto, Eero Olavi Heikkinen
  • Patent number: 10153814
    Abstract: Embodiments of the disclosure relate to a massive multiple-input multiple-output (M-MIMO) wireless distribution system (WDS) and related methods for optimizing the M-MIMO WDS. In one aspect, the M-MIMO WDS includes a plurality of remote units each deployed at a location and includes one or more antennas to serve a remote coverage area. At least one remote unit can have a different number of the antennas from at least one other remote unit in the M-MIMO WDS. In another aspect, a selected system configuration including the location and number of the antennas associated with each of the remote units can be determined using an iterative algorithm that maximizes a selected system performance indicator of the M-MIMO WDS. As such, it may be possible to optimize the selected system performance indicator at reduced complexity and costs, thus helping to enhance user experiences in the M-MIMO WDS.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: December 11, 2018
    Assignee: Corning Incorporated
    Inventors: Xiaojun Liang, Anthony Ng'Oma
  • Patent number: 10128929
    Abstract: The embodiments of the invention relate to a transmitter method for multiple antenna systems. The transmitter method contains the step of operating at least one antenna array in a first operation mode by transmitting first transmit signals (TS1-1, TS1-a, TS1-A) from a first number of antenna elements (AEG1) with a first transmit power and the step of operating the at least one antenna array in at least one second operation mode by transmitting at least second transmit signals (TS2-1, TS2-b, TS2-B, TS3-1, TS3-C, TS3-C) from at least one second number of antenna elements (AEG2, AEG3) smaller than the first number of antenna elements with at least one second transmit power larger than the first transmit power. The embodiments of the invention further relate to a transmitter apparatus for multiple antenna systems.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: November 13, 2018
    Assignee: ALCATEL LUCENT
    Inventors: Andreas Wich, Osman Aydin, Jakob Hoydis
  • Patent number: 10103431
    Abstract: A method including identifying clusters of antenna elements of a phased array antenna. For each cluster of antenna elements, the method includes identifying a reference antenna element of the cluster of antenna elements and identifying pairs of calibration antenna elements of the cluster of antenna elements. For each pair of calibration antenna elements, the method includes executing a calibration routine configured to determine a calibration adjustment for each antenna element of the pair of calibration antenna elements based on the reference antenna element. The method also includes determining a leveling adjustment for each antenna element of the phased array antenna. The method further includes adjusting the element gain and the element phase of each antenna element of the phased array antenna based on the corresponding leveling adjustment to equalize a transmission gain and a transmission phase of each signal path of the phased array antenna.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: October 16, 2018
    Assignee: Google LLC
    Inventors: Paul Swirhun, Arnold Feldman
  • Patent number: 10056992
    Abstract: Methods and systems are provided for dynamical calibration of phase signals and/or amplitudes in a telecommunication system. Calibration of phases is a necessary measure to ensure proper phasing and, as a result, emission of correct beamforming patterns. Without correct phasing (and emission of correct beamforming patterns), performance of a telecommunication network may suffer and user satisfaction may decrease. However, calibration provides a period of time where service is not provided and should not be done too often as it will decrease service provided and, likely, satisfaction of service received if there are frequent periods of outages. By utilizing specific telecommunication metrics, such as temperature, performance, or error vector magnitude, necessary calibrations may be identified and evaluated such that a determination regarding an optimal calibration time is made to balance providing service and a period of service outage.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: August 21, 2018
    Assignee: Sprint Communications Company L.P.
    Inventors: Sreekar Marupaduga, Andrew M. Wurtenberger
  • Patent number: 10054671
    Abstract: An on-vehicle radar apparatus includes a radar sensor and a mounting angle calculation section that calculates a mounting angle of the radar sensor, and the radar sensor is mounted on a vehicle so that a sensing area includes a direction of 90 degrees relative to a front-back direction of the vehicle and detects a relative speed to an observation point at which the radar wave is reflected in the sensing area and an azimuth at which the observation point is located. The mounting angle calculation section calculates a mounting angle of the radar sensor from an azimuth of a speed zero observation point, the speed zero observation point being the observation point with a relative speed of zero.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: August 21, 2018
    Assignee: DENSO CORPORATION
    Inventors: Miki Satou, Yasuyuki Miyake, Gaku Takano, Koichiro Suzuki
  • Patent number: 10045225
    Abstract: A system and method are disclosed for determining a location to position an RF signal repeater within a structure, based on the position having the highest probability of being the location of the highest probable RF signal strength.
    Type: Grant
    Filed: August 3, 2016
    Date of Patent: August 7, 2018
    Assignee: Nextivity, Inc.
    Inventor: Michiel Petrus Lotter
  • Patent number: 10032103
    Abstract: The present invention relates to the identification of RFID devices that are arranged closely together and placed on shelving for logistical and storage purposes. Furthermore, the aspects of the present invention relate to an arrangement and/or layout of antenna coils for example in an interrogator. There is disclosed a RFID interrogator and/or method of interrogating comprising an antenna, when activated, being adapted to radiate an interrogation signal in a first area, means adapted to shift the antenna within a second area, the second area being larger than the first area. The antenna may be mechanically moveable.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: July 24, 2018
    Assignee: SATO HOLDINGS CORPORATION
    Inventors: Graham Alexander Munro Murdoch, Heinz Zollinger
  • Patent number: 10012721
    Abstract: A testing device for testing a radar device. The testing device may be configured to determine a first frequency difference between a frequency of a first signal or a second signal and a frequency of a third signal based on a first distance value; transmit to the radar device the first signal; receive the second signal from the radar device; transmit to the radar device the third signal at an offset relative to at least one of the first signal and the second signal based on the first frequency difference; and receive from the radar device a fourth signal indicating a second distance value or a second frequency difference between the frequency of the second signal and the frequency of the third signal, determined by the radar device, for comparison with the first distance value or the first frequency difference.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: July 3, 2018
    Assignee: Teradyne, Inc.
    Inventors: Jeorge S. Hurtarte, Daniel A. Rosenthal
  • Patent number: 9948408
    Abstract: Apparatuses, methods, and systems for calibrating an antenna array are disclosed. One method includes selecting an antenna element of a first antenna subarray and an antenna element of a second antenna subarray, transmitting the signal through the at least one antenna element of the first subarray having a first selected phase, transmitting the signal through the at least one antenna element of the second subarray having a second selected phase, and characterizing a relative phase offset between the antenna element of the first antenna subarray and the antenna element of the second antenna subarray, including adjusting the first selected phase or the second selected phase, and monitoring a receive signal received at a calibration antenna that includes the transmitted signal of the at least one antenna element of the first antenna subarray and the transmitted signal of the at least one antenna element of second antenna subarray.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: April 17, 2018
    Assignee: Facebook, Inc.
    Inventors: Krishna Srikanth Gomadam, William Charles Fujimoto, Djordje Tujkovic, Sanjai Kohli
  • Patent number: 9910135
    Abstract: A self-testing method of a frequency-modulated continuous-wave (FMCW) radar device. A transmission signal having an object detection signal and a self-test signal superimposed on the object detection signal is transmitted. The self-test signal represents at least one virtual target. A reception signal is received. The reception signal is a received version of the transmission signal. Presence of the at least one virtual target in the reception signal is determined. A lack of presence of the virtual target in the reception signal provides an indication of hardware failure of the FMCW radar device.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: March 6, 2018
    Assignee: AUTOLIV DEVELOPMENT AB
    Inventors: Alan Jenkins, Jonathan Moss
  • Patent number: 9856860
    Abstract: A wind turbine is provided, having a wind turbine tower and at least one rotatable blade, and further comprising a system for measuring rotor blade vibration of said wind turbine. The system comprises at least one Doppler radar unit operatively configured to emit and receive radar signals, the radar unit being mounted on the wind turbine tower at a position above the lowest position of the at least one blade, the radar unit being positioned so as to measure reflections of an emitted radar signal from the turbine blade. A processing unit is configured to receive measurement data from the radar unit and to determine, by analysis of Doppler shift in received radar signals relative to transmitted signals due to movement of the blade towards or away from the turbine tower, the velocity of the blade in the direction towards or away from the turbine tower.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: January 2, 2018
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventors: Knut Vangen, Erik Meum, Jan Pleym
  • Patent number: 9853363
    Abstract: A system that incorporates teachings of the subject disclosure may include, for example, a method for comparing a received signal from a first antenna to a reference signal transmitted by a second antenna, determining from the comparison one or more compensation parameters, and tuning a compensation circuit according to the one or more compensation parameters, where the one or more compensations parameters configure the compensation circuit to reduce mutual coupling between the first and second antennas. Other embodiments are disclosed.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: December 26, 2017
    Assignee: BlackBerry Limited
    Inventors: Shirook M. Ali, John Bradley Deforge
  • Patent number: 9831560
    Abstract: An apparatus for reducing electromagnetic scattering includes a first component having a plurality of curved segments, each including a first reflective material, and together forming an enclosed cavity; and a second component having a plurality of flat or cylindrically-curved segments, each comprising a second reflective material. The second component is positioned external to the cavity.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: November 28, 2017
    Assignee: Elwha LLC
    Inventors: Tom Driscoll, David R. Smith, Yaroslav A. Urzhumov
  • Patent number: 9780447
    Abstract: Antenna system having an antenna array with multiple sub-arrays, each having one or more antenna elements, is calibrated using a distributed calibration antenna element, such as a leaky coaxial cable, that spans across at least two and possibly all of the sub-arrays. To calibrate the transmit (TX) paths of the sub-arrays, TX calibration test signals are transmitted by the sub-arrays, captured by the distributed calibration element, and processed by a corresponding calibration radio. To calibrate the receive (RX) paths of the sub-arrays, an RX calibration test signal is generated by the calibration radio, transmitted by the distributed calibration element, captured by the sub-arrays, and processed by their corresponding radios. Cross-correlation between the calibration and captured signals is performed to derive the complex gain of each sub-array transmitter and receiver, which provides information for aligning the gain, phase, and delay of the different TX and RX paths of the antenna array.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: October 3, 2017
    Assignee: CommScope Technologies LLC
    Inventors: Gregory A. Maca, Jonathon C. Veihl
  • Patent number: 9673965
    Abstract: A method for calibrating a serial interconnection system having a first node, a second node, calibration nodes that are electrically connected in series by the serial interconnection system, and connection nodes corresponding to the serially connected calibration nodes, the connection nodes electrically connected in series by the serial interconnection system, the calibration method involving: for each of the calibration nodes performing a measurement procedure involving: injecting a corresponding reference signal into that calibration node; and while the corresponding reference signal is being injected into that calibration node, measuring the phase difference of signals appearing at the first and second nodes; from the measured phase differences for the calibration nodes, computing phase corrections for each of the calibration nodes; and applying the phase corrections computed for each of the calibration nodes to the corresponding connection nodes.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: June 6, 2017
    Assignee: Blue Danube Systems, Inc.
    Inventor: Mihai Banu
  • Patent number: 9620856
    Abstract: Methods for generating weights for the antenna elements (110) in an AESA antenna (100). In one embodiment, transmitting weights are selected to have unit amplitude and quadratic phase, and receiving weights are selected to provide a two-way antenna pattern which is uniform over a useful portion (300) of the main lobe, and decreases rapidly outside of the uniform portion. In another embodiment the transmitting weights have unit amplitude over a central portion of the array and the receiving weights are selected to provide a two-way antenna pattern which is uniform over a useful portion (300) of the main lobe.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: April 11, 2017
    Assignee: RAYTHEON COMPANY
    Inventor: Michael Y. Jin
  • Patent number: 9590747
    Abstract: A method, device, and system for calibrating one or more transceiver components in a multi-transceiver system are provided. The method includes sending a calibration signal through a transmit path of a first transceiver of the multi-transceiver system, resulting in transmission of the calibration signal from an antenna of the first transceiver; receiving, by an antenna of a second transceiver of the multi-transceiver system, the transmitted calibration signal, and processing the received calibration signal through a receive path of the second transceiver; and calibrating one or more components of the multi-transceiver system using the received and processed calibration signal.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: March 7, 2017
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Alexander Thoukydides, Augustine Lytan
  • Patent number: 9575161
    Abstract: The invention relates to a method and system for testing and evaluating a response of an automotive radar system for a specific automotive safety scenario, wherein the method and system generates a simulated reflected radar signature corresponding to at least one virtual target in a specific virtual scenario. The simulated radar signature is generated from one or more of: a pre-recorded real reflected radar signature from at least one real target in a specific real scenario, an analytical representation of a radar target signature from at least one virtual target in a specific virtual scenario.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: February 21, 2017
    Assignee: UniqueSec AB
    Inventors: Kasra Haghighi, Fahimeh Rafieinia
  • Patent number: 9564936
    Abstract: An aviation transponder system comprising a permanently-mounted antenna, a permanently-mounted receiver module comprising a receiver, a signal splitter, and an external connector, and a portable receiver module, wherein a signal received on the permanently-mounted antenna is passed to the signal splitter of the permanently-mounted receiver module, wherein the signal splitter splits the signal such that the signal is sent to both the receiver and to the external connector, and wherein the portable receiver module is connected to the external connector, whereby the permanently-mounted antenna is used by the receiver of the permanently-mounted receiver module and fed through the permanently-mounted receiver module and made available to the portable receiver module through the external connector.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: February 7, 2017
    Assignee: Appareo Systems, LLC
    Inventors: Robert M. Allen, Bradley R. Thurow, Jeffrey L. Johnson
  • Patent number: 9551782
    Abstract: A radar apparatus is provided. The radar apparatus includes a transmitter configured to transmit radar signals via a radar antenna, a receiver configured to receive reflection waves that are echoes of the radar signals, via the radar antenna, a radar image generating module configured to generate a radar image based on the reflection waves received by the receiver, a performance monitor configured to measure performance of at least one of the transmitter and the receiver, and a controller configured to cause the performance monitor to perform the measurement while the transmission of the radar signals is suspended.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: January 24, 2017
    Assignee: FURUNO ELECTRIC COMPANY LIMITED
    Inventors: Katsuyuki Yanagi, Yoshifumi Ohnishi
  • Patent number: 9547071
    Abstract: A radar transceiver is disclosed. The radar transceiver includes a computing unit, a sweep control unit, a set of transmitters for transmitting radar chirps to targets, a set of receivers for receiving reflected chirps from the targets, and a timing engine processor coupled to the set of transmitters and to the set of receivers and configured to transmit a first set of control signals. The timing engine processor receives a second set of control signals generated by the computing unit. The sweep control unit receives a first control signal and a second control signal from the timing engine processor. The first control signal indicating a start time of a chirp and the second control signal indicating a reset time for resetting the chirp. A controlled phased lock loop (PLL) generates a local oscillator signal which is inputted to transmitters and receivers.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: January 17, 2017
    Assignee: NXP B.V.
    Inventors: Cicero Silveira Vaucher, Cornelis Gehrels
  • Patent number: 9548534
    Abstract: In the field of active phase-control antennas, a method is provided for calibrating the phase center of an active antenna including a plurality of sub-elements able to receive a useful signal emitted by a satellite, the calibration being defined as a function of the reception characteristics of a reference signal at the level of each sub-element, the reference signal being emitted by the same satellite on a frequency band substantially equal to the frequency band of the useful signal and whose theoretical reception characteristics are known.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: January 17, 2017
    Assignees: Thales, Centre National D'Etudes Spatiales
    Inventors: Thibaud Calmettes, Lionel Ries, Michel Monnerat
  • Patent number: 9502022
    Abstract: A quiet zone generation technique is proposed for interference mitigation for a receive antenna by injecting the very interference signals via iterative processing, generating quiet zones dynamically for receive (RCV) antennas. The receive antenna may feature multiple receiving apertures distributed over a finite area. Optimization loops consist of four cascaded functional blocks; (1) a pick-up array to obtain the interference signals, (2) element weighting and/or repositioning processors, (3) an auxiliary transmit (XMIT) array with optimized element positions, (4) a diagnostic network with strategically located probes, and (5) an optimization processor with cost minimization algorithms. To minimize interferences between transmit (Tx) and receiving (Rx) apertures in limited space of an antenna farm for communications and/or radar applications are very tough problems.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: November 22, 2016
    Assignee: Spatial Digital Systems, Inc.
    Inventors: Donald C. D. Chang, Michael T. H. Lin, Steve Chen