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Millimeter wave transceiving module for holographic imaging safety inspection system

A transceiver module, holographic imaging technology, applied in electromagnetic wave detection, radio wave measurement system, use of re-radiation and other directions, can solve the problems of large size, poor product consistency, and high cost

Inactive Publication Date: 2011-07-27
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0027] This technology originated from the millimeter-wave waveguide technology in the 1990s. It is larger in size, heavier in weight, higher in cost, and not good enough in product consistency.

Method used

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  • Millimeter wave transceiving module for holographic imaging safety inspection system
  • Millimeter wave transceiving module for holographic imaging safety inspection system
  • Millimeter wave transceiving module for holographic imaging safety inspection system

Examples

Experimental program
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Embodiment Construction

[0053] Such as figure 1 As shown, the RF transceiver front-end in the millimeter-wave transceiver module generates broadband, frequency-stabilized, and phase-stabilized millimeter waves. Through the transmit switch tree, the transmit antenna array is sequentially turned on, and millimeter waves are transmitted to the imaging scene; the receive switch tree is sequentially turned on. The receiving antenna array receives the backscattered millimeter wave signal of the imaging scene, enters the receiving branch of the radio frequency front end, and outputs the I / Q signal containing the amplitude and phase information of the backscattered millimeter wave of the imaging scene;

[0054] Such as figure 2 As shown, the RF transceiver front-end of the module adopts self-differential working mode, that is, the same millimeter-wave source generates millimeter-wave signals. After power division, part of it is sent out in the transmitting branch, and part of it enters the receiving branch...

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Abstract

The invention provides a millimeter wave transceiving module for a holographic imaging safety inspection system, which comprises a millimeter wave radio frequency transceiving front end 1, a millimeter wave transceiving switch tree 2 and a millimeter wave transceiving antenna array 3. The millimeter wave radio frequency transmitting front end is used for sequentially transmitting millimeter wave signals to a detected object via the millimeter wave transmitting antenna array through fast electronic switching of the transmitting switch tree; and the scattered millimeter wave signals reflected by the object are received by the millimeter wave receiving antenna array and then sequentially enter into the millimeter wave radio frequency receiving front end through the electronic switching of the receiving switch tree. Necessary amplification and digital sampling treatment are performed on the output signals of the module, and a millimeter wave holographic image of the object can be recovered by operation through the millimeter wave holographic algorithm for safety inspection application. The module adopts full-system single-chip integration, is stable in performances and good in consistency, and further has the product advantages of low cost, easiness in large-scale production and small volume (light load).

Description

technical field [0001] The invention provides a millimeter wave transceiver module for a holographic imaging security inspection system, which mainly relates to the technical field of security inspection, and in particular relates to the fields of airport security inspection technology and holographic imaging technology. Background technique [0002] Existing millimeter wave holographic imaging security system [0003] The current millimeter-wave holographic imaging security inspection system is mainly based on the years of research on millimeter-wave holographic imaging technology by scholars such as David M.Sheen and Douglas L.McMakin of the Pacific Northwest National Laboratory (PNNL), and is held by L-3 Communications in the United States. Manufactured by the company, it has been put into partial use in some sensitive airports in the United States. The millimeter-wave holographic imaging security inspection system has the technical characteristics of broadband, real-ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/12G01S7/02G01S13/89
Inventor 时翔孙晓玮钱蓉孙浩李凌云关福宏李江夏陈敏华刘传全
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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