中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

216 records (took 0.027 seconds)

    DIGITAL PRE-DISTORTION COMPENSATION IN A WIRELESS COMMUNICATIONS SYSTEM
    1.
    发明申请
    DIGITAL PRE-DISTORTION COMPENSATION IN A WIRELESS COMMUNICATIONS SYSTEM 有权

    公开(公告)号：US20250126011A1

    公开(公告)日：2025-04-17

    申请号：US19000388

    申请日：2024-12-23

    Applicant: Space Exploration Technologies Corp.

    Inventor： Martin S. McCormick ,  Feipeng Wang

    IPC: H04L27/36 ,  H03F1/32 ,  H04B1/04

    Abstract: A wireless communications system includes a pre-distortion actuator configured to receive a carrier-modulated signal and convert the carrier-modulated signal into an output signal, the pre-distortion actuator comprising a behavioral model that models a transmit chain of the system including at least one antenna and predict an input-output relationship of the transmit chain of the system between an input to the transmit chain to an output of the transmit chain. The system includes a phased antenna array configured to transmit the output signal. The phased antenna array includes a plurality of antenna elements. The pre-distortion actuator is configured to generate the output signal by applying a correction to the carrier-modulated input signal that cancels out nonlinearities The behavioral model is updated based on feedback from a receiver from a previous output signal transmitted to the receiver.

    SYSTEM AND METHOD OF PROVIDING A RADIO LINK CONTROL SUBLAYER
    2.
    发明申请
    SYSTEM AND METHOD OF PROVIDING A RADIO LINK CONTROL SUBLAYER 有权

    公开(公告)号：US20250125905A1

    公开(公告)日：2025-04-17

    申请号：US19000441

    申请日：2024-12-23

    Applicant: Space Exploration Technologies Corp.

    Inventor： Jeffrey A. Gardner ,  Yashodhan Dandekar ,  Ramakrishna Akella ,  Khasim Shaheed Shaik Mahammad

    IPC: H04L1/00 ,  H04W28/06 ,  H04W80/02 ,  H04W84/06

    Abstract: Systems, methods, and techniques are provided for a radio link control (RLC) sublayer. An example satellite or user terminal can include a divisional of layer 2 of the OSI protocol layer structure. An example method includes providing a RLC sublayer on top of a MAC sublayer and adaptively switching, via the RLC sublayer and based on external data, between an unacknowledged mode and an acknowledged mode for the electronic communications. If the RLC sublayer is operating in the unacknowledged mode, the RLC sublayer provides one or more of (1) fragmentation and reassembly of service data units; (2) a use of RLC headers; and/or (3) no delivery guarantees. If the RLC sublayer is operating in the acknowledged mode, the RLC sublayer provides reliability in a sequence delivery service and one or more of (1) fragmentation and reassembly of service data units; and/or (2) the use of RLC headers.

    SYSTEMS AND METHODS FOR BEAMFORMING IN HYBRID BEAMFORMING ANTENNAS
    4.
    发明申请
    SYSTEMS AND METHODS FOR BEAMFORMING IN HYBRID BEAMFORMING ANTENNAS 有权

    公开(公告)号：US20250019395A1

    公开(公告)日：2025-01-16

    申请号：US18900240

    申请日：2024-09-27

    Applicant: Space Exploration Technologies Corp.

    Inventor： Eric Pepin ,  Kim W. Schulze ,  Amir Agah ,  Dean A. De Carli ,  Philippe Riondet

    IPC: C07K1/36

    Abstract: Systems, methods, and computer-readable media are provided for hybrid beamforming. An example method can include determining a plurality of digital beamforming weights associated with a plurality of digital beamforming paths between digital beamformers and groups of analog beamforming circuits in a phased array antenna, each digital beamforming path being coupled to a group of analog beamforming circuits and each analog beamforming circuit being coupled to a respective set of antenna elements of the phased array antenna, and determining analog beamforming weights associated with the groups of analog beamforming circuits. The analog beamforming weights are estimated to put analog beamforming paths associated with the groups of analog beamforming circuits in a desired phase and gain relationship with each other. The method can include varying, based at least partly on the analog beamforming weights, a signal phase shift across the analog beamforming paths associated with the groups of analog beamforming circuits.

    Antenna modules in phased array antennas
    5.
    发明授权
    Antenna modules in phased array antennas 有权

    公开(公告)号：US12166282B2

    公开(公告)日：2024-12-10

    申请号：US18216415

    申请日：2023-06-29

    Applicant: Space Exploration Technologies Corp.

    Inventor： Javier Rodriguez De Luis ,  Nil Apaydin ,  Ersin Yetisir ,  Alireza Mahanfar ,  Siamak Ebadi

    IPC: H01Q1/38 ,  H01Q3/26 ,  H01Q21/00

    Abstract: An apparatus includes a plurality of conductive structures having first sides and second sides opposite the first sides, wherein the second sides of the plurality of conductive structures are configured to be physically coupleable with a printed circuit board (PCB) of a receiver, a transmitter, or a transceiver. The first sides of the plurality of conductive structures are configured to be spaced from the PCB by a first distance when the plurality of conductive structures is physically coupled with the PCB. The apparatus includes an antenna having a first side and a second side opposite the first side. The second side of the antenna is disposed closer to the plurality of conductive structures than the first side of the antenna when the plurality of conductive structures is physically coupled with the PCB.

    PAN/TILT ASSEMBLY FOR ANTENNA APPARATUS
    8.
    发明公开
    PAN/TILT ASSEMBLY FOR ANTENNA APPARATUS 审中-公开

    公开(公告)号：US20240213652A1

    公开(公告)日：2024-06-27

    申请号：US18435899

    申请日：2024-02-07

    Applicant: Space Exploration Technologies Corp.

    Inventor： Erik N. Littleton ,  Duncan Edwin Adams

    IPC: H01Q1/12 ,  F16M11/12 ,  F16M11/18 ,  H01Q3/08

    CPC classification number: H01Q1/125 ,  F16M11/126 ,  F16M11/18 ,  H01Q3/08

    Abstract: In one embodiment of the present disclosure, a pan/tilt assembly for an antenna apparatus having a housing enclosing antenna components and a leg extending from the housing includes a first actuator for rotating a first gear, a second actuator for rotating a second gear, a third gear coupled to the leg and engaged by the first and second gears, and a tee having a first portion substantially transverse to a second portion, wherein the first portion has a first end rotatably received within the first gear and a second end rotatably received within the second gear, and wherein the second portion is rotatably received within the third gear.

    Timing half-duplex transmissions
    9.
    发明授权
    Timing half-duplex transmissions 有权

    公开(公告)号：US11924821B1

    公开(公告)日：2024-03-05

    申请号：US17339860

    申请日：2021-06-04

    Applicant: Space Exploration Technologies Corp.

    Inventor： Peter J. Worters ,  Martin S. McCormick ,  Andrew G. Whitlow

    IPC: H04W72/121 ,  H04B7/185 ,  H04L5/16 ,  H04W56/00 ,  H04W72/1273

    CPC classification number: H04W72/121 ,  H04B7/18513 ,  H04L5/16 ,  H04W56/0045 ,  H04W56/0055 ,  H04W72/1273

    Abstract: Systems, methods, and non-transitory media are provided for timing half-duplex transmissions in a wireless communication system. An example method can include receiving, by a user terminal (UT), a radio frame transmitted by a satellite to a group of UTs; identifying an offset delay defined in the radio frame for scheduling transmissions between the satellite and each UT in the group of UTs, the offset delay providing non-overlapping time intervals for receive, process, and transmit operations at each UT; determining, based on the offset delay and a time when the radio frame was received by the UT, a time for transmitting an uplink radio burst to the satellite, wherein the uplink radio burst transmitted at the time is estimated to arrive at the satellite within a same radio frame interval as uplink radio bursts from other UTs; and transmitting, to the satellite, the uplink radio burst at the time.

Patent Agency Ranking