公开(公告)号：US11863219B2

公开(公告)日：2024-01-02

申请号：US17453167

申请日：2021-11-01

Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

Inventor： Bin Cao ,  Xu Chu ,  Jifeng Chen ,  Peng Zhang ,  Yinqi Wang

IPC: H04B1/04 ,  G01R33/36

CPC classification number: H04B1/0475 ,  G01R33/3614 ,  H04B2001/0416

Abstract: The present disclosure relates to a radio frequency power amplifier (RFPA) control device. The RFPA control device may include an input signal processing module configured to process an input signal into two signals. A first signal may be used for signal detection, and a second signal may be used for signal amplification. The RFPA control device may also include a delay module. The delay module may be disposed between the input signal processing module and an adjustment module. The delay module may be configured to determine a delay of the second signal such that the second signal and the control signal roughly simultaneously reach the adjustment module.

公开(公告)号：US11165453B2

公开(公告)日：2021-11-02

申请号：US16726865

申请日：2019-12-25

Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

Inventor： Bin Cao ,  Xu Chu ,  Jifeng Chen ,  Peng Zhang ,  Yinqi Wang

IPC: H04B1/04 ,  G01R33/36

Abstract: The present disclosure relates to a radio frequency power amplifier (RFPA) control device. The RFPA control device may include an input signal processing module configured to process an input signal into two signals. A first signal may be used for signal detection, and a second signal may be used for signal amplification. The RFPA control device may also include a delay module. The delay module may be disposed between the input signal processing module and an adjustment module. The delay module may be configured to determine a delay of the second signal such that the second signal and the control signal roughly simultaneously reach the adjustment module.

公开(公告)号：US11821968B2

公开(公告)日：2023-11-21

申请号：US17155120

申请日：2021-01-22

Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

Inventor： Mingyu Xue ,  Haicong Zhang ,  Bin Cao ,  Xu Chu ,  Peng Chen

IPC: G01R33/38 ,  G01R33/385 ,  H03F3/21

CPC classification number: G01R33/3852 ,  H03F3/211

Abstract: Gradient power amplifier (GPA) systems and methods are provided. A GPA system may include a plurality of paralleled GPAs; and at least one controller operably coupled to the plurality of paralleled GPAs. The at least one controller may be configured to perform operations including: obtaining a total current parameter of the plurality of paralleled GPAs; determining, based on the total current parameter and a target current parameter, a first difference value; and determining, based on the first difference value, a first control parameter of a first GPA of the plurality of paralleled GPAs, wherein the first control parameter is configured to control an output current of the first GPA.

公开(公告)号：US11058476B2

公开(公告)日：2021-07-13

申请号：US16666435

申请日：2019-10-29

Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

Inventor： Guoping Zhu ,  Tieshan Zhang ,  Xu Chu ,  Fan Zhao ,  Zhihui Shu ,  Jinglin Wu ,  Bin Cao

IPC: A61B6/00 ,  A61B6/03 ,  A61B18/12 ,  A61B6/02

Abstract: The present disclosure relates to systems and methods for energy imaging. The method may include obtaining a reference waveform of a tube voltage of a radiation source of a scanner. The reference waveform may be formed based on a superposition of a sine wave and one or more harmonics corresponding to the sine wave. The method may include causing a high voltage generator to generate the tube voltage changing between a first voltage and a second voltage lower than the first voltage according to the reference waveform. The tube voltage may be provided to the radiation source for generating radiation rays. The method may further include causing the scanner to perform energy imaging.