公开(公告)号：US11316583B2

公开(公告)日：2022-04-26

申请号：US16707927

申请日：2019-12-09

Applicant: INTELLIGENT FUSION TECHNOLOGY, INC.

Inventor： Lun Li ,  Jingyang Lu ,  John Nguyen ,  Dan Shen ,  Khanh Pham ,  Genshe Chen

IPC: H04B7/15 ,  H04L25/03 ,  H04B1/04 ,  G05B13/02 ,  H04B7/185 ,  H03F3/189 ,  G06N20/00

Abstract: The present disclosure provides a high power amplifier (HPA) linearization method, applied to a ground hub which includes a predistorter and a PD controller. The ground hub is arranged in a satellite communication system together with a transmitter and a satellite transponder, and the satellite transponder includes an HPA. The HPA linearization method includes determining an initial correction signal based on a physical model with a plurality of PD parameters to compensate AM-AM and AM-PM characteristics of the HPA; receiving a signal from the satellite transponder; determining a reward function for an action taken by the PD controller; examining an action-value function for actions taken in a preset past period; taking an action to adjust the plurality of PD parameters for the PD to generate an updated correction signal; sending the update correction signal to the transmitter to compensate the AM-AM and AM-PM characteristics of the HPA.

公开(公告)号：US10739467B2

公开(公告)日：2020-08-11

申请号：US15874526

申请日：2018-01-18

Applicant: Intelligent Fusion Technology, Inc

Inventor： Zhonghai Wang ,  Bin Jia ,  Xingping Lin ,  Tao Wang ,  Xingyu Xiang ,  Genshe Chen ,  Dan Shen ,  Khanh Pham ,  Erik Blasch

IPC: G01S19/23 ,  H01Q3/02 ,  H01Q3/26 ,  H01Q1/28

Abstract: A method for testing satellite signal receiver antenna is provided. The method includes: determining a satellite constellation state indicating status of a plurality of satellites in a satellite constellation; calculating, based on the determined satellite constellation state, initial positions of a plurality of satellite antennas that are used for emulating the satellite constellation; moving the plurality of satellite antennas to the initial positions of the plurality of satellite antennas; calibrating a phase delay of each of the plurality of satellite antennas; broadcasting, by the plurality of satellite antennas, satellite signals to test a satellite signal receiver antenna; determining a movement plan for the plurality of satellite antennas based on the satellite constellation state; and moving the plurality of satellite antennas based on the movement plan to emulate a propagation of the satellite constellation.

公开(公告)号：US10338207B2

公开(公告)日：2019-07-02

申请号：US15344365

申请日：2016-11-04

Applicant: Intelligent Fusion Technology, Inc

Inventor： Zhonghai Wang ,  XingPing Lin ,  Genshe Chen ,  Dan Shen ,  Bin Jia ,  Gang Wang ,  Khanh Pham ,  Erik Blasch

IPC: G01S7/35 ,  G01S13/18 ,  G01S13/34

Abstract: The present disclosure provides a gated range scanning linear frequency modulated continuous wave (LFMCW) radar structure, including: a frequency synthesizer, a first mixer, a second mixer, a first filter, and a third mixer. The frequency synthesizer is configured for generating a first local oscillating signal and a second local oscillating signal, a frequency of the first local oscillating signal varying in a frequency range, each frequency corresponding to a sub-range of a coverage range scanned by the LFMCW radar structure. The first mixer is configured for mixing a copy of a transmitted signal and the first local oscillating signal to generate a first output signal (the receiver's first local oscillator). The second mixer is configured for mixing the first output signal and a received signal from a receiving antenna to generate a second output signal that includes an intermediate frequency (IF) signal being received by the first filter.