公开(公告)号：US11885869B2

公开(公告)日：2024-01-30

申请号：US17256851

申请日：2019-06-06

Applicant: NUCTECH COMPANY LIMITED

Inventor： Shangmin Sun ,  Yu Hu ,  Sheng Yao ,  Tao Wang ,  Xibin Yin

IPC: G01S13/38 ,  G01S7/40 ,  G01S13/34 ,  G05B1/00

CPC classification number: G01S13/38 ,  G01S7/4004 ,  G01S13/347 ,  G05B1/00

Abstract: The present disclosure provides a smart automatic frequency control (AFC) apparatus, including: a phase shift module, connected to a first signal input terminal and configured to: receive an incident wave from the first signal input terminal, perform a phase shift on the incident wave according to a phase shift parameter so as to generate a phase-shifted signal, and output the phase-shifted signal to a phase detection module; and the phase detection module, connected to the phase shift module and a second signal input terminal and configured to: receive a reflected wave from the second signal input terminal, perform a phase detection on the phase-shifted signal and the reflected wave so as to generate a phase difference signal, and output the phase difference signal via a control interface.

公开(公告)号：US10129971B2

公开(公告)日：2018-11-13

申请号：US14900601

申请日：2013-11-19

Applicant: Nuctech Company Limited

Inventor： Shangmin Sun ,  Zhanfeng Qin ,  Sheng Yao ,  Weifeng Yu ,  Liwei Song ,  Chunguang Zong ,  Jinning Liang

IPC: G01N23/04 ,  H05H7/02 ,  H05H9/04 ,  G01V5/00

Abstract: The present invention provides a standing wave electron linear accelerator comprising a modulator and a magnetron for producing radio frequency microwaves; a plurality of accelerating tubes for accelerating electrons; a microwave transmission system for feeding the microwaves into the plurality of accelerating tubes; a plurality of electron guns for emitting electron beams into the plurality of accelerating tubes; a plurality of targets impinged by the electrons from a plurality of accelerating tubes to form continuous spectrums of X-rays; a plurality of shielding devices for shielding the continuous spectrums of X-rays generated by the targets; and a microwave distributor disposed adjacent to the end of the microwave transmission system, wherein the microwave distributor has a microwave inlet and a plurality of microwave outlets for distributing the microwaves in the microwave transmission system into the accelerating tubes.