公开(公告)号：EP3165901B1

公开(公告)日：2020-02-12

申请号：EP15899907.8

申请日：2015-09-14

Applicant: China Communication Technology Co., Ltd. ,  Shenzhen Victooth Terahertz Technology Co., Ltd.

Inventor： WU, Guangsheng ,  ZHANG, Yandong ,  DING, Qing

IPC: G01N21/3581 ,  G01B9/02

公开(公告)号：EP3511745A1

公开(公告)日：2019-07-17

申请号：EP17848137.0

申请日：2017-09-06

Applicant: China Communication Technology Co., Ltd. ,  Shenzhen Institute of Terahertz Technology and Innovation

Inventor： QI, Chunchao ,  ZHAO, Shukai ,  CHEN, Hanjiang ,  LIU, Beibei

IPC: G01V8/20

Abstract: The invention relates to a power adjustment method and apparatus, and a human body security check device. The method is applied in a human body security check device or an inspection device provided with a millimeter wave transceiver. An adjustable power attenuator is provided in a millimeter wave signal transmitting link of the millimeter wave transceiver. The method comprises: obtaining a current humidity value by detecting the ambient humidity around the millimeter wave transceiver using a preset humidity sensor; determining a target power attenuation value of the adjustable power attenuator according to the current humidity value, the sum of the target power attenuation value and a power attenuation value caused to a millimeter wave signal by the ambient humidity being a constant value; and controlling the adjustable power attenuator to adjust its power attenuation value to be consistent with the target power attenuation value. The solution can reduce radiation hazard while ensuring the definition of an image.

公开(公告)号：EP3503388A1

公开(公告)日：2019-06-26

申请号：EP16913713.0

申请日：2016-08-22

Applicant: China Communication Microelectronics Technology Co. Ltd. ,  China Communication Technology Co., Ltd.

Inventor： ZHU, Shoukui ,  DING, Qing ,  WU, Guangsheng ,  MA, Jianguo

IPC: H03F3/20

Abstract: A harmonic power amplifying circuit with high efficiency and high bandwidth and a radio-frequency power amplifier. The circuit comprises: an input matching network (11), a transistor (M), and an output matching network (12); a gate of the transistor (M) is connected to an output end of the input matching network (11), a drain thereof is connected to an input end of the output matching network (12), and a source thereof is grounded; the output matching network (12) enables a lower sideband of the harmonic power amplifying circuit to work in a continuous inverse F amplification mode and an upper sideband of the harmonic power amplifying circuit to work in a continuous F amplification mode; the output matching network (12) and a parasitic network of the transistor (M) form a low pass filter. By means of the transition from the continuous inverse F power amplifier working mode to the continuous F power amplifier working mode, the efficiency of a continuous harmonic control power amplifier is effectively improved to be higher than 60%, a relative bandwidth is improved to be higher than 80%, and the harmonic impedance is simple to match and easy to realize.

公开(公告)号：EP3486679A1

公开(公告)日：2019-05-22

申请号：EP17826922.1

申请日：2017-07-05

Applicant: Shenzhen CCT THZ Technology Co., Ltd. ,  China Communication Technology Co., Ltd.

Inventor： SUN, Chao ,  LIU, Juncheng ,  QI, Chunchao ,  WU, Guangsheng ,  ZHAO, Shukai ,  DING, Qing

IPC: G01S7/02

Abstract: A method and system using a TR assembly to obtain an intermediate-frequency controllable signal. The method comprises: dividing an output signal of a signal source (S201) into a first signal and a second signal (step S101); performing frequency multiplication and amplification on the first signal to obtain an intermediate signal of corresponding power and frequency, and using the second signal as a local oscillation signal; dividing the intermediate signal into a first intermediate signal and a second intermediate signal, and using the first intermediate signal as a reference signal (step S102), wherein the first intermediate signal is identical to the second intermediate signal; performing frequency mixing on the second intermediate signal and the local oscillation signal to obtain a mixed signal, which is a high-frequency millimeter wave signal (step S103); transmitting the mixed signal by a transmitting antenna (S206 and S305) (step S104); and performing frequency mixing on the signal received by a receiving antenna (S208 and S306) and the reference signal to obtain an intermediate-frequency controllable signal having a frequency consistent with that of the output signal of the signal source (step S105).

公开(公告)号：EP3451019A1

公开(公告)日：2019-03-06

申请号：EP16900062.7

申请日：2016-08-03

Applicant: Shenzhen CCT THZ Technology Co., Ltd. ,  China Communication Technology Co., Ltd.

Inventor： QI, Chunchao ,  SUN, Chao ,  WU, Guangsheng ,  ZHAO, Shukai ,  DING, Qing

IPC: G01S13/90

Abstract: The present disclosure relates to a security inspection system and method using the three-dimensional holographic imaging technology. The system comprises: a body frame (1); a millimeter-wave transceiving module (2), disposed on the body frame (1); and at least two millimeter-wave switch antenna arrays, connected with the millimeter-wave transceiving module (2); the number of the millimeter-wave switch antenna arrays being the same as that of the scan areas; a scan driving device (5), configured to drive the at least two millimeter-wave switch antenna arrays to rotate along the same direction; a control device (3), configured to control the scan driving device (5) to generate a rotation angle signal; and a parallel-image processing module (4), configured to synthesize a three-dimensional holographic image of an under-test object according to echo signals collected by the millimeter-wave transceiving module (2) and spatial position information of the echo signals. The present disclosure simplifies the system structure and improves the imaging resolution.

公开(公告)号：EP3506148A1

公开(公告)日：2019-07-03

申请号：EP16913836.9

申请日：2016-08-25

Applicant: China Communication Technology Co., Ltd. ,  Shenzhen Victooth Terahertz Technology Co., Ltd.

Inventor： QI, Chunchao ,  CHEN, Hanjiang ,  LI, Zhiquan

IPC: G06K9/00 ,  G06K9/46 ,  G06K9/54

Abstract: A human-body foreign-matter detection method and system based on millimeter-wave image. The method comprises: obtaining a millimeter-wave grayscale image of a human body; extracting a human-body contour image in the millimeter-wave grayscale image; constructing a vertical space distribution histogram in a vertical direction and a horizontal space distribution histogram in a horizontal direction for the human-body contour image; obtaining positions of limbs of the human body according to the vertical space distribution histogram, the horizontal space distribution histogram and a pre-set human-body proportion model; identifying a foreign matter in the human-body contour image according to pre-set foreign-matter feature identification models; and marking a position of the foreign matter on the human-body contour image according to the positions of the limbs, and generating a foreign-matter detection result. The accuracy of foreign matter detection can be greatly improved by means of obtaining a millimetre wave grey-scale image of a human body, extracting a human body contour image in the millimetre wave grey-scale image, identifying a foreign matter in the human body contour image and marking the position of the foreign matter on the human body contour image.

公开(公告)号：EP3483637A1

公开(公告)日：2019-05-15

申请号：EP17823666.7

申请日：2017-07-06

Applicant: China Communication Technology Co., Ltd. ,  Shenzhen Institute of Terahertz Technology and Innovation

Inventor： Qi, Chunchao ,  SUN, Chao ,  ZHAO, Shukai ,  WU, Guangsheng ,  DING, Qing

IPC: G01V13/00

Abstract: A millimeter wave security inspection instrument debugging system and a millimeter wave security inspection instrument debugging method, which are used for debugging the imaging definition of a millimeter wave holographic imaging security inspection system. A main control apparatus is used for generating a millimeter wave detection signal and a reference signal. The main control apparatus is also used for, where a millimeter wave transmitting antenna, a millimeter wave receiving antenna and a detected object are respectively located at different relative positions, transmitting the millimeter wave detection signal to the detected object by means of the millimeter wave transmitting antenna, and receiving an echo signal reflected from the detected object by means of the millimeter wave receiving antenna, and then using a holographic image technique to perform three-dimensional imaging according to the reference signal and the echo signal. The main control apparatus can finally obtain a plurality of three-dimensional imaging results, so that the optimal relative positions of the millimeter wave transmitting antenna, the millimeter wave receiving antenna and the detected object can be determined, which results are applied to a millimeter wave holographic imaging security inspection system, thereby improving the imaging definition of the millimeter wave holographic imaging security inspection system.

公开(公告)号：EP3468079A1

公开(公告)日：2019-04-10

申请号：EP16902873.5

申请日：2016-08-11

Applicant: Shenzhen Institute of Terahertz Technology and Innovation Co., Ltd. ,  China Communication Technology Co., Ltd.

Inventor： YANG, Bin ,  ZHAO, Shukai ,  DING, Qing

IPC: H04J14/06 ,  H04B10/532

Abstract: This invention is applied to the field of terahertz communication and provides a two-path terahertz wave communication system, which comprises a terahertz wave generation module, a terahertz wave transmission channel connected with the output port of the terahertz generation module, and a terahertz wave receiving module connected with the output port of the terahertz wave transmission channel. According to the system disclosed by the invention, one path of optical signal source is converted into one path of horizontally polarized terahertz wave and one path of perpendicularly polarized terahertz wave and then are combined into one path by the terahertz wave generation module for transmission via the terahertz wave transmission channel, and the horizontally polarized terahertz wave and the perpendicularly polarized terahertz wave are re-divided into two paths through the terahertz wave receiving module so as to be received respectively. The two-path terahertz wave communication can be realized, and the rate and the spectrum utilization efficiency of the terahertz wave communication are improved.