Patents Examined by Timothy A. Brainard
  • Patent number: 11977145
    Abstract: Disclosed is a method and a corresponding distance-measuring device for measuring a distance to an object using FMCW radar. The method includes the frequency-dependent determination of the amplitude of the radar signal, i.e. the frequency response in the output path and in the input path of the distance-measuring device. The standard windowing of the evaluation signal can be corrected using a correction factor dependent on the frequency responses. Thus the frequency dependence of the radar signal is compensated independently of device-internal or external interferences by adapting the window function. The result is more accurate and reliable distance measurement using FMCW radar. Because the distance can be determined by the disclosed method very accurately and without distortion, it is advantageous to use the distance-measuring device as a fill-level measuring device to measure the fill level of a filling material in a container.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: May 7, 2024
    Assignee: Endress+Hauser SE+Co. KG
    Inventor: Winfried Mayer
  • Patent number: 11965767
    Abstract: A guided wave radar level gauge adapted for mounting on a nozzle of a tank, including an attachment collar with an opening configured to be aligned with the nozzle and to be secured by means of an annular clamping device, and a transmission line probe attached to an exterior end of a probe connector. The GWR level gauge further comprises an annular sealing gasket fitted in the collar opening, the annular sealing gasket having a central opening through which the central probe connector extends, and a distancing sleeve arranged around the exterior end of the probe connector and having a radially protruding collar portion, wherein processing circuitry is configured to detect an impedance change caused by tank content or condensate which has passed through the central opening of the sealing gasket and collected in an annular space immediately surrounding the radially protruding collar portion.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: April 23, 2024
    Assignee: ROSEMOUNT TANK RADAR AB
    Inventors: Håkan Fredriksson, Björn Lindblad, Mikael Eriksson
  • Patent number: 11959997
    Abstract: A method of using a first device to locate a second device is disclosed. The first device, while in a first mode, transmits a first signal and receives a second signal comprising a reflection of the first signal by the second device. The first device determines, based on the received second signal, a position of the second device relative to the first device. The first device transitions to a second mode, and while in the second mode, receives a third signal from the second device. The first device determines, based on the third signal, an orientation of the second device relative to the first device. The first device comprises one or more receiving antennas, and the second device comprises one or more transmitting antennas. The third signal corresponds to a transmitting antenna of the second device.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: April 16, 2024
    Assignee: Magic Leap, Inc.
    Inventors: Koon Keong Shee, Jose Felix Rodriguez, Ricardo Arencibia, Aly H. M. Aly
  • Patent number: 11959792
    Abstract: The present disclosure relates to a method for safe and exact ascertaining of fill level of a fill substance located in a container by means of an ultrasonic, or radar-based, fill level measuring device. In such case, the method is distinguished by the feature that the evaluation curve created based on the reflected received signal is differently greatly smoothed as a function of measured distance. To achieve this, the evaluation curve can be specially filtered, depending on the application. In this way, noise fractions and disturbance echoes can be efficiently suppressed, without unnecessarily limiting the accuracy of the fill level measurement.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: April 16, 2024
    Assignee: Endress+Hauser SE+Co. KG
    Inventors: Stefan Gorenflo, Alexey Malinovskiy
  • Patent number: 11953615
    Abstract: A radar system with on-system calibration for cross-coupling and gain/phase variations includes capabilities for radar detection and correction for system impairments to improve detection performance. The radar system is equipped with pluralities of transmit antennas and pluralities of receive antennas. The radar system uses a series of calibration measurements of a known object to estimate the system impairments. A correction is then applied to the beamforming weights to mitigate the effect of these impairments on radar detection. The estimation and correction requires no external measurement equipment and can be computed on the radar system itself.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: April 9, 2024
    Assignee: Uhnder Inc.
    Inventors: Murtaza Ali, Ali Erdem Ertan, Kevin B. Foltinek
  • Patent number: 11947033
    Abstract: A method for improving dynamic frequency selection (DFS) includes receiving, by an access point, a plurality of pulses in a DFS channel of the access point, determining, by the access point, a plurality of characteristics of the plurality of pulses, varying, by the access point, a threshold for radar detection, and determining, by the access point and based on at least one of the plurality of characteristics, whether the plurality of pulses are radar.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: April 2, 2024
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: Jean-Francois Gagnon, Andre Beaudin, Myung Cheol Kim
  • Patent number: 11946880
    Abstract: A test system for testing a device under test is described. The test system includes an anechoic chamber for encompassing a device under test to be tested by means of radio frequency radiation. The anechoic chamber has a wall with an opening provided in the wall. The test system also has a feedthrough assembly for transporting a fluid into the anechoic chamber or from the anechoic chamber. The feedthrough assembly has a pipe that extends through the opening such that the pipe is fed through the opening. The pipe is routed such that radio frequency radiation is prevented from leaving the anechoic chamber via the pipe. Furthermore, a feedthrough assembly is described.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: April 2, 2024
    Assignee: Rohde & Schwarz GmbH & Co. KG
    Inventors: Thomas Rossberger, Markus Herbrig, Stefan Schoetz, Constantin Sinn
  • Patent number: 11936107
    Abstract: The dipole-resonator resistive absorber is a metamaterial absorber operating in the microwave regime. A single unit of the dipole-resonator resistive absorber includes a first rectangular conductive ring having a pair of first resistors mounted thereon and in electrical communication therewith, and a plurality of parallel linear arrays of second rectangular conductive rings, where each of the second rectangular conductive rings has a pair of second resistors mounted thereon and in electrical communication therewith. The first rectangular conductive ring is mounted above the plurality of parallel linear arrays of the second rectangular conductive rings, and this structure is backed by an electrically conductive layer. The single unit dipole-resonator resistive absorber may be expanded into an arrayed structure, forming a polarization-independent dipole-resonator resistive absorber.
    Type: Grant
    Filed: August 2, 2021
    Date of Patent: March 19, 2024
    Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Ping Sheng, Sichao Qu, Yuxiao Hou
  • Patent number: 11927691
    Abstract: A portable vehicle sensor calibration apparatus having an anchor mechanism such that the apparatus may be mounted upon a surface. The anchor mechanism may comprise a suction cup mechanism. The vehicle sensor calibration apparatus may comprise a second anchor mechanism. The vehicle sensor calibration apparatus may be operable to mount onto a body of a support vehicle other than the vehicle having sensors requiring calibration.
    Type: Grant
    Filed: April 10, 2019
    Date of Patent: March 12, 2024
    Assignee: Robert Bosch GmbH
    Inventors: Robert Meitzler, Michael Shevela, Richard Martin
  • Patent number: 11927668
    Abstract: Disclosed are techniques for employing deep learning to analyze radar signals. In an aspect, an on-board computer of a host vehicle receives, from a radar sensor of the vehicle, a plurality of radar frames, executes a neural network on a subset of the plurality of radar frames, and detects one or more objects in the subset of the plurality of radar frames based on execution of the neural network on the subset of the plurality of radar frames. Further, techniques for transforming polar coordinates to Cartesian coordinates in a neural network are disclosed. In an aspect, a neural network receives a plurality of radar frames in polar coordinate space, a polar-to-Cartesian transformation layer of the neural network transforms the plurality of radar frames to Cartesian coordinate space, and the neural network outputs the plurality of radar frames in the Cartesian coordinate space.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: March 12, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Daniel Hendricus Franciscus Fontijne, Amin Ansari, Bence Major, Ravi Teja Sukhavasi, Radhika Dilip Gowaikar, Xinzhou Wu, Sundar Subramanian, Michael John Hamilton
  • Patent number: 11921185
    Abstract: An ultra-wideband (“UWB”) communication system comprising a transmitter and a receiver having two antennas. An UWB signal transmitted by the transmitter is received at each of the antennas. By comparing the carrier phases of the received signals, the phase difference can be determined. From this phase difference and the known distance, d, between the antennas, the Cartesian (x, y) location of the transmitter relative to the receiver can be directly determined.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: March 5, 2024
    Assignee: DecaWave, Ltd.
    Inventors: Michael McLaughlin, Gavin Marrow, Igor Dotlic
  • Patent number: 11921229
    Abstract: An apparatus, including processing unit (PU) cores and computer readable storage devices storing machine instructions for determining a distance between a target object and a radar sensor circuit. The PU cores receive a beat signal generated by the radar sensor circuit and compensate for a phase difference between the received beat signal and a reconstruction of the received beat signal to obtain a phase compensated beat signal. The phase compensated beat signal is then filtered to remove spurious reflections by demodulating the phase compensated beat signal using an estimated frequency of the phase compensated beat signal. The PU cores then apply a low pass filter to the demodulated phase compensated beat signal, resulting in a modified beat signal. The PU cores then determine the distance between the target object and the radar sensor circuit using the modified beat signal.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: March 5, 2024
    Assignee: Texas Instruments Incorporated
    Inventors: Muhammad Zubair Ikram, Adeel Ahmad, Dan Wang, Murtaza Ali
  • Patent number: 11920970
    Abstract: A method of determining a filling level of a product in a tank having a tank wall, the method comprising: generating and transmitting an electromagnetic first transmit signal; propagating the first transmit signal through a tank atmosphere towards a corner reflector formed by the surface of the product and the tank wall where the surface of the product meets the tank wall, the corner reflector being at a known horizontal distance from the radar level gauge system; receiving an electromagnetic first reflection signal resulting from reflection of the first transmit signal at the corner reflector; determining a measure indicative of a propagation direction of the first reflection signal; and determining the filling level based on the measure indicative of the propagation direction of the first reflection signal and the known horizontal distance between the radar level gauge system and the corner reflector.
    Type: Grant
    Filed: May 22, 2023
    Date of Patent: March 5, 2024
    Assignee: ROSEMOUNT TANK RADAR AB
    Inventors: Christer Frövik, Olov Edvardsson
  • Patent number: 11914020
    Abstract: A device for a presence detection system for detecting the presence of a user close to a motor vehicle is configured to: activate a piezoelectric element during an “awake” time interval to stabilize the piezoelectric element; then, control the supply of voltage to an oscillator and supply the oscillator with a reference electrical signal forming a current voltage reference, so the transceiver circuit transmits a signal during what is called a “transmission” time interval; during the transmission time interval, measure the frequency of a reflected signal resulting from the transmitted signal, measure the frequency of the transmitted signal, and determine a corrected reference based on the measured frequency of the transmitted signal, allowing the oscillator to operate at a target frequency value. This allows limiting the energy consumption of a transceiver device used to detect the presence of a user close to a motor vehicle.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: February 27, 2024
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventors: Eric Servel, Cédric Vergnieres, Wladia Waszak
  • Patent number: 11916310
    Abstract: An electronic device including an antenna is provided. The electronic device includes a housing including a front surface plate, a rear surface plate, and a side surface member, a printed circuit board positioned within the housing, a first support structure, a second support structure, a patch antenna including a flexible printed circuit board disposed on one surface of the first support structure that faces the rear surface plate, a first conductive patch, and a second conductive patch disposed to be spaced apart from the first conductive patch, a conductive pattern disposed on one surface of the second support structure, and a wireless communication circuit electrically connected with the patch antenna and the conductive pattern, and the first conductive patch, the second conductive patch and the conductive pattern are fed from the wireless communication circuit.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: February 27, 2024
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Muyeol Lee, Jongyeon Kim, Eunsoo Park, Woosup Lee, Sehwan Choi, Jiwoo Lee
  • Patent number: 11906621
    Abstract: Systems and methods for improving the use of precipitation sensors, such as radar and rain gauges, are described herein. In an embodiment, an agricultural intelligence computer system receives one or more digital precipitation records comprising a plurality of digital data values representing precipitation amount at a plurality of locations. The system additionally receives one or more digital forecast records comprising a plurality of digital data values representing precipitation forecasts, each of which comprising predictions of precipitation at a plurality of lead times. The system identifies a plurality of forecast values for a plurality of locations at a particular time, each of the plurality of forecast values corresponding to a different lead time. The system uses the plurality of forecast values to generate a probability of precipitation at each of the plurality of locations.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: February 20, 2024
    Assignee: CLIMATE LLC
    Inventors: Frederick Anthony Eckel, Bradley Nicholas Guy
  • Patent number: 11906612
    Abstract: An object detection device includes: a measurement unit configured to transmit a radio wave to measure, based on a reflected wave acquired from an object to be detected existing in a periphery of the moving body, a position and a doppler speed of the object as a reflection point; a grouping processing unit configured to execute grouping processing when a plurality of reflection points are acquired, and are determined to be acquired from the same object; a moving speed calculation unit configured to use the doppler speeds and the positions of the plurality of reflection points acquired from the same object, to thereby calculate a moving direction and a moving speed of the same object; and an output unit configured to output the calculated moving direction and moving speed as information on a position and a speed corresponding to detection results of the same object.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: February 20, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventor: Takaaki Nishida
  • Patent number: 11907829
    Abstract: A radar device may include a radar transmitter to output a radio frequency (RF) transmission signal including a plurality of frequency-modulated chirps. The radar device may include a radar receiver to receive an RF radar signal, and generate, based on the RF radar signal, a dataset including a set of digital values, the dataset being associated with a chirp or a sequence of successive chirps. The radar device may include a neural network to filter the dataset to reduce an interfering signal included in the dataset, the neural network being a convolutional neural network. At least one layer of the neural network may be a complex-valued neural network layer includes complex-valued weighting factor, where the complex-valued neural network layer is configured to perform one or more operations according to a complex-valued computation.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: February 20, 2024
    Assignee: Infineon Technologies AG
    Inventors: Paul Meissner, Franz Pernkopf, Johanna Rock, Wolfgang Roth, Mate Andras Toth, Alexander Fuchs
  • Patent number: 11906653
    Abstract: A calibration utilizes reference data indicative of a position of a target element relative to a reference location, of a position of a reference point on a rotatable support relative to the reference location, orientation data indicative of at least one angular position of the rotatable support, and antenna measurement data indicative of electromagnetic echo signals received by a radar antenna from the target element. A measured position of the target element relative to the radar antenna is determined based on at least a portion of the antenna measurement data. A reference position of the target element relative to the radar antenna is determined based on the reference data and on at least a portion of the orientation data. At least one bias value or function associated with the orientation data and/or the antenna measurement data is determined based on a deviation between the determined measured position and reference position.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: February 20, 2024
    Assignee: ELTA SYSTEMS LTD.
    Inventor: Michael Mihlin
  • Patent number: 11906616
    Abstract: The present disclosures discloses a method of target feature extraction based on millimeter-wave radar echo, which mainly solves the problems that techniques in the prior art cannot fully utilize raw radar echo information to obtain more separable features and cannot accurately distinguish targets with similar physical shapes and motion states. The method is implemented as follows: acquiring measured data of targets, generating an original RD map, and removing ground clutter of the map; sequentially performing target detection, clustering and centroid condensation on the RD map after the ground clutter removal; acquiring a continuous multi-frame RD maps and carrying out the target tracking; according to the tracking trajectory, selecting candidate areas and extracting features based on a single piece of RD map and features based on two successive RD maps, respectively.
    Type: Grant
    Filed: July 21, 2021
    Date of Patent: February 20, 2024
    Assignee: Xidian University
    Inventors: Lan Du, Zengyu Yu, Xiaoyang Chen, Zenghui Li, Chunxin Wang