利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

804 records (took 0.023 seconds)

    Beamforming device testing
    1.
    发明授权
    Beamforming device testing 有权

    公开(公告)号：US12113583B2

    公开(公告)日：2024-10-08

    申请号：US17143850

    申请日：2021-01-07

    Applicant: FormFactor, Inc.

    Inventor： Dennis Rosenauer ,  Roger Hayward ,  Roy Swart

    IPC: H04B17/12 ,  H04B17/16 ,  H04B17/19 ,  H04B7/06

    CPC classification number: H04B17/12 ,  H04B17/16 ,  H04B17/19 ,  H04B7/0617

    Abstract: Improved electrical testing of N-port beamforming devices is provided. For testing, an N:1 electrical network is connected to the N ports of the device under test to provide a single test port. This mode of testing can be used to determine parameters of interest (e.g., far field radiation patterns etc.) of the device under test more rapidly than with antenna range testing or with characterization of each port of the device under test. The N:1 electrical network can be passive or active. The N:1 electrical network can be integrated in a probe head to provide probe array testing of beamforming devices. Alternatively, the N:1 electrical network can be integrated with the device under test to provide onboard testing capability.

    MACHINE-LEARNING BASED TUNING ALGORITHM FOR DUPLEXER SYSTEMS
    2.
    发明公开
    MACHINE-LEARNING BASED TUNING ALGORITHM FOR DUPLEXER SYSTEMS 审中-公开

    公开(公告)号：US20240322782A1

    公开(公告)日：2024-09-26

    申请号：US18680493

    申请日：2024-05-31

    Applicant: Apple Inc.

    Inventor： Björn Lenhart ,  Joonhoi Hur ,  Harald Pretl ,  Rastislav Vazny

    IPC: H03H7/40 ,  G06N20/00 ,  H04B1/04 ,  H04B17/10 ,  H04B17/12

    CPC classification number: H03H7/40 ,  G06N20/00 ,  H04B1/0458 ,  H04B17/104 ,  H04B17/12

    Abstract: This disclosure provides techniques for impedance matching. A radio frequency (RF) device includes a power detector to determine a transmitter leakage and a post-processing unit to determine a receiver leakage, and determines if isolation is acceptable based on the leakages. The RF device may include a device for measuring antenna impedance. Otherwise, the RF device may select multiple tuner settings (e.g., capacitor values) for test signals to be transmitted and received at a target frequency, determine multiple sets of leakage values, determine multiple reflection coefficients based on the multiple sets of leakage values, and determine an estimated antenna impedance at the target frequency based on the reflection coefficients. The RF device then determines impedance tuner settings based on the measured or estimated antenna impedance. Alternatively, the RF device determines impedance tuner settings using an inverse machine-learning model based on a determined matching impedance.

    CALIBRATION METHOD AND APPARATUS
    3.
    发明公开
    CALIBRATION METHOD AND APPARATUS 审中-公开

    公开(公告)号：US20240313397A1

    公开(公告)日：2024-09-19

    申请号：US18511149

    申请日：2023-11-16

    Applicant: BDCM A2 LLC

    Inventor： Safa Kanan Hadi Salman ,  Taha Shahvirdi Dizaj Yekan ,  Souren Shamsinejad ,  Maha Achour

    IPC: H01Q3/26 ,  H01Q3/36 ,  H01Q21/00 ,  H01Q21/22 ,  H04B17/12

    CPC classification number: H01Q3/267 ,  H01Q3/36 ,  H01Q21/0025 ,  H01Q21/22 ,  H04B17/12

    Abstract: Examples disclosed herein relate to an antenna calibration method for a beam steering radar. A first set of input voltages is determined for a plurality of phase shifters coupled to a plurality of antenna elements in an antenna array in the beam steering radar, the voltages to control phases of signals for transmission by the antenna array. A first set of input voltages is applied to the antenna array. Radiating signals resulting from the first set of input voltages are measured. Voltage and phase values for the plurality of phase shifters are iteratively optimized to determine voltage and phase value pairs that result in a desired gain for the antenna array. The voltage and phase value pairs are stored in a look-up-table in the beam steering radar.

    Device and method of estimating output power of array antenna
    5.
    发明授权
    Device and method of estimating output power of array antenna 有权

    公开(公告)号：US12040844B2

    公开(公告)日：2024-07-16

    申请号：US18055921

    申请日：2022-11-16

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： Dooseok Choi ,  Youngki Lee ,  Joonhoi Hur

    IPC: H04B17/12 ,  H04B17/10

    CPC classification number: H04B17/12 ,  H04B17/102

    Abstract: A wireless communications device may include a controller configured to, in a calibration mode, obtain a first output value of a first power detector after setting a first power amplifier to a first gain and obtain a second output value of the first power detector after setting the first power amplifier to a second gain, wherein the controller may estimate, in a normal mode, output power of a first antenna from an output value of the first power detector, based on a correction coefficient calculated using the first output value and the second output value.

    ANTENNA ARRAY MEASUREMENT AND CALIBRATION
    7.
    发明公开
    ANTENNA ARRAY MEASUREMENT AND CALIBRATION 审中-公开

    公开(公告)号：US20240204420A1

    公开(公告)日：2024-06-20

    申请号：US18084231

    申请日：2022-12-19

    Applicant: Keysight Technologies, Inc.

    Inventor： Joel P. Dunsmore ,  Tuan Tang

    IPC: H01Q21/24 ,  H04B17/12

    CPC classification number: H01Q21/24 ,  H04B17/12

    Abstract: A system for measuring and calibrating an antenna array having a plurality of antenna array elements each configured to individually radiate signals is described. The system includes an antenna array controller comprising a memory that stores instructions and a processor that executes the instructions. When executed by the processor, the instructions cause the system to: measure a magnitude and phase of each of a set of antenna array elements; and compensate for leakage of other antenna array elements of the set of antenna array elements.

    Handling of impaired antenna branch
    8.
    发明授权
    Handling of impaired antenna branch 有权

    公开(公告)号：US12009874B2

    公开(公告)日：2024-06-11

    申请号：US17415149

    申请日：2018-12-18

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Hao Zhang ,  Chonghao Yang ,  Mingshi Li

    IPC: H04B17/17 ,  H04B17/12 ,  H04B17/309

    CPC classification number: H04B17/17 ,  H04B17/12 ,  H04B17/309

    Abstract: There is provided mechanisms for handling an impaired antenna branch at a radio transceiver device. The radio transceiver device includes a plurality of antenna branches. Channel information is correlated among the respective antenna branches according to a correlation relation. A method is performed by a network node. The method includes obtaining an indication that at least one of the antenna branches at the radio transceiver device is impaired. The method includes, in response thereto obtaining channel information for each of the non-impaired antenna branches at the radio transceiver device. The method includes estimating channel information for each of the at least one impaired antenna branch using the obtained channel information and the correlation relation.

    CALIBRATION OF TRANSMIT ANTENNA CHAINS AND RECEIVE ANTENNA CHAINS OF AN ANTENNA SYSTEM
    9.
    发明公开
    CALIBRATION OF TRANSMIT ANTENNA CHAINS AND RECEIVE ANTENNA CHAINS OF AN ANTENNA SYSTEM 审中-公开

    公开(公告)号：US20240072911A1

    公开(公告)日：2024-02-29

    申请号：US18267737

    申请日：2020-12-22

    Applicant: Telefonaktiebolaget LM Ericsson (publ)

    Inventor： Vijay Venkateswaran ,  Bo Göransson ,  Joao Vieira

    IPC: H04B17/19 ,  H01Q3/26 ,  H04B17/12 ,  H04B17/21

    CPC classification number: H04B17/19 ,  H01Q3/267 ,  H04B17/12 ,  H04B17/221

    Abstract: There is provided mechanisms for calibrating transmit antenna chains and receive antenna chains of an antenna system. A method is performed by a network node. The method comprises obtaining a set of observations from bi-directional sounding of pairs of antennas of the antenna system. Each of the antennas has one transmit antenna chain and one receive antenna chain. The observations are represented by a composite product of transmit calibration weights, receive calibration weights, and signal leakage terms. The method comprises estimating the transmit calibration weights and the receive calibration weights from a decomposition of the composite product. The method comprises calibrating the transmit antenna chains and the receive antenna chains by applying as calibration factors the estimated transmit calibration weights to the transmit antenna chains and the receive calibration weights to the receive antenna chains.

    SYSTEM AND METHOD FOR OVER-THE-AIR ANTENNA CALIBRATION
    10.
    发明公开
    SYSTEM AND METHOD FOR OVER-THE-AIR ANTENNA CALIBRATION 审中-公开

    公开(公告)号：US20240072435A1

    公开(公告)日：2024-02-29

    申请号：US18242994

    申请日：2023-09-06

    Applicant: Space Exploration Technologies Corp.

    Inventor： Ersin Yetisir

    IPC: H01Q3/26 ,  H01Q1/48 ,  H01Q9/04 ,  H01Q21/06 ,  H04B17/12

    CPC classification number: H01Q3/267 ,  H01Q1/48 ,  H01Q9/0414 ,  H01Q9/045 ,  H01Q21/065 ,  H04B17/12

    Abstract: An antenna calibration system for a phased array antenna in accordance with one embodiment of the present disclosure generally includes: a beamformer corresponding to a subset of antenna cells of a plurality of antenna cells, wherein the beamformer includes a calibration section for comparing a reference signal to a non-reference signal and a first operating antenna within the subset of antenna cells corresponding with the beamformer. In some implementations, the first operating antenna is configured to deliver a first reference signal (mTx) from the beamformer to be received by a second operating antenna for comparison with a first non-reference signal (Rx) in the beamformer, and/or the first operating antenna is configured to deliver a second non-reference signal (Tx) from a third operating antenna for comparison with a second reference signal (mRx) in the beamformer.

Patent Agency Ranking