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公开(公告)号：US10770790B1
公开(公告)日：2020-09-08
申请号：US15908602
申请日：2018-02-28
Applicant: Space Exploration Technologies Corp.
Inventor： Alireza Mahanfar
Abstract: A phased array antenna system configured for communication with a satellite that emits or receives radio frequency (RF) signals and has a repeating ground track in a first direction, the antenna system includes a phased array antenna including a plurality of antenna elements distributed in a plurality of M columns oriented in the first direction and a plurality of N rows extending in a second direction normal to the first direction, and a plurality of fixed phase shifters aligned for phase offsets between antenna elements in the first direction and a gain-enhancement system configured for gain enhancement in the second direction of radio frequency signals received by and emitted from the phased array antenna.
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公开(公告)号：US20250141654A1
公开(公告)日：2025-05-01
申请号：US19005758
申请日：2024-12-30
Applicant: Space Exploration Technologies Corp.
Inventor： Andras Tantos , David Francois Jacquet , Mario Toma
IPC: H04L7/033
Abstract: In an embodiment, an apparatus includes an integrated circuit (IC) chip configured to receive a timing signal and a first reference clock signal and generate a first reference time signal based on the timing signal and the first reference clock signal. The IC chip is configured to generate a second reference time signal based on the first reference time signal and a second reference clock signal, different from the first reference clock signal The second reference time signal specifies a count of a number of cycles of the second reference clock signal starting from a particular cycle of the second reference clock signal. The IC chip is configured to synchronize one or more actions performed by the IC chip based on the second reference time signal.
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公开(公告)号：US20250070459A1
公开(公告)日：2025-02-27
申请号：US18943760
申请日：2024-11-11
Applicant: Space Exploration Technologies Corp.
Inventor： David Milroy , Duncan E. Adams , Andrea Papi , Scott Kaufman , Ersin Yetisir , Anthony Sims
IPC: H01Q1/42 , H01Q1/02 , H01Q1/12 , H01Q1/22 , H01Q1/38 , H01Q9/04 , H01Q15/14 , H01Q21/00 , H01Q21/06 , H01Q21/10 , H01Q23/00
Abstract: In one embodiment of the present disclosure, an antenna apparatus includes a housing assembly including a radome portion and a lower enclosure portion, wherein the radome portion and lower enclosure portion are couplable to form an inner compartment for housing antenna components of the antenna assembly, an antenna stack assembly disposed within the inner compartment, wherein the antenna stack assembly generates heat when in operation, and a heat transfer system within the inner compartment configured to facilitate the flow of heat toward the radome portion.
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公开(公告)号：US20250062935A1
公开(公告)日：2025-02-20
申请号：US18815754
申请日：2024-08-26
Applicant: Space Exploration Technologies Corp.
Inventor： Martin S. McCormick , Torbjorn Larsson , Alazar Tamrat , Jeffrey C. Strait , Chen Chen , Philip J. Treigherman , Stephan O. Roche , Ronald Gottula
IPC: H04L25/02 , H04B7/185 , H04L5/00 , H04L27/00 , H04L27/26 , H04W72/044 , H04W72/0453
Abstract: A modem is configured to receive a transmitted waveform transmitted from a satellite (SAT) to a user terminal (UT). The modem includes: a receiver, on the UT, configured to receive the transmitted waveform from the SAT, the transmitted waveform comprising first resource blocks intended for the UT and second resource blocks intended for a second UT, a first set of components configured with the receiver on the UT to process the transmitted waveform with the first resource blocks and the second resource blocks, a multi-user demapper configured with the receiver to extract the first resource blocks from the transmitted waveform to yield a per-user signal, and a second set of components configured within the receiver to demodulate and decode the first resource blocks in the per-user signal.
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公开(公告)号：US12231178B2
公开(公告)日：2025-02-18
申请号：US18227476
申请日：2023-07-28
Applicant: Space Exploration Technologies Corp.
Inventor： David Francois Jacquet , Masoud Kahrizi , Robert Baummer, Jr. , Jean-Noel Rozec , Fabrice Jean André Belvèze , Paul Lee Pearson , Francois Lucien Emile Icher , Marc Gens , Pascal Triaire
Abstract: In an embodiment, an apparatus includes a first baseband section to receive a calibration signal; a first radio frequency (RF) section configured to generate a RF calibration signal based on modulating the calibration signal. The calibration signal comprises an orthogonal code based signal. The apparatus includes a second RF section to receive the RF calibration signal and generate a received calibration signal based on demodulating the RF calibration signal; a calibration section; a first antenna electrically coupled to the first RF section and configured to transmit the RF calibration signal; and a second antenna electrically coupled to the second RF section and configured to receive the RF calibration signal. The calibration section is configured to determine one or more of gain, baseband delay, or RF delay to calibrate the first RF section; and the second antenna is switchable between receiving the RF calibration signal and transmitting an encoded data signal.
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Patent Agency Ranking
公开(公告)号：US20250055432A1
公开(公告)日：2025-02-13
申请号：US18812840
申请日：2024-08-22
Applicant: Space Exploration Technologies Corp.
Inventor： Frederic Duez , Frederic Paillardet
Abstract: Technologies are provided for variable gain amplifiers (VGAs). An example VGA includes a resistor ladder network comprising resistor legs coupled to a first plurality of resistors and a second plurality of resistors, a first set of differential switches connected to the resistor ladder network, a second set of differential switches connected to a set of output nodes, a third set of differential switches connected to the resistor ladder network, a fourth set of differential switches connected to the set of output nodes, and a fifth transistor and a sixth transistor comprising a differential pair coupled to a differential input signal. The fifth transistor is connected to the first set of differential switches and the sixth transistor connected to the third set of differential switches.
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公开(公告)号：US20250048128A1
公开(公告)日：2025-02-06
申请号：US18805387
申请日：2024-08-14
Applicant: Space Exploration Technologies Corp.
Inventor： Martin S. McCormick
Abstract: In an embodiment, an apparatus includes an antenna assembly configured to transmit and receive beams in time-varying directions, and a beam steering controller configured to determine a first beam pointing vector by searching for a satellite included in the communication system. The antenna assembly maintains a communication link with the satellite in a direction associated with the beam pointing vector, the satellite associated with the beam pointing vector. The beam steering controller is configured to obtain, from the satellite, satellite ephemeris information of the satellite and one or more additional satellites. The beam steering controller is configured to determine an orientation of the antenna assembly based on the satellite ephemeris information and the beam pointing vector.
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公开(公告)号：US20250023597A1
公开(公告)日：2025-01-16
申请号：US18771928
申请日：2024-07-12
Applicant: Space Exploration Technologies Corp.
Inventor： Eric Pepin , Amir Agah , Kim W. Schulze
Abstract: A phased array antenna system is provided. The phased array antenna system includes: a beamformer (BF) module comprising an antenna port coupled to an antenna element. The BF module includes first, second, and third radio frequency (RF) ports. The first and third RF ports are configured as a first differential signal pair and the second and third RF ports are configured as a second differential signal pair. The first RF port corresponds to a first RF signal and the second RF port corresponds to a second RF signal, different from the first RF signal.
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公开(公告)号：US12136977B2
公开(公告)日：2024-11-05
申请号：US18197597
申请日：2023-05-15
Applicant: Space Exploration Technologies Corp.
Inventor： Eric Pepin , Kim W. Schulze , Amir Agah , Dean A. De Carli , Philippe Riondet
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.
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公开(公告)号：US12065271B2
公开(公告)日：2024-08-20
申请号：US17574486
申请日：2022-01-12
Applicant: Space Exploration Technologies Corp.
Inventor： Mohammed Faraz Admani , Pieter Buysschaert , Andrew D. Roberts , Garrett P. Simard
Abstract: Embodiments of the present disclosure are directed to techniques for transitioning a spacecraft from a power-saving state to a power-consuming state at a time after launch of the spacecraft on a launch vehicle. Because the spacecraft can detect conditions for transitioning to the power-consuming state, commands received via an umbilical connection to the launch vehicle, or detecting the presence or absence of such a connection, is unnecessary, thereby removing several technical barriers to eliminating such umbilical connections altogether.
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