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THz wave transmission beaming system realizing large angle adjustability of output direction

A technology with output direction and large angle, applied in the field of specular transmission beamforming system, which can solve problems such as low sensitivity

Active Publication Date: 2018-02-02
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the sensitivity of conventional NMR spectroscopy is very low, so sensitivity is critical to the success of this technique

Method used

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  • THz wave transmission beaming system realizing large angle adjustability of output direction
  • THz wave transmission beaming system realizing large angle adjustability of output direction
  • THz wave transmission beaming system realizing large angle adjustability of output direction

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Embodiment Construction

[0021] like figure 1 As shown, the mirror transmission beamforming system with large-angle adjustable output direction is mainly composed of an input waveguide 1, a rotating parabolic mirror 2, a phase correction mirror 3, an input waveguide 4, and a bracket 5. The bracket is specifically composed of a bracket supporting the input waveguide, a bracket supporting the phase correction mirror and an angle indicator, and a bracket supporting the rotating parabolic mirror. The bracket supporting the input waveguide is slotted in phase 1 with the input corrugated waveguide, and the lower end is connected with the base. The phase correction mirror support is connected with the phase correction mirror 3 and fixed on the base, the angle indicator is rigidly connected with the phase correction mirror through a slide bar, and the slide bar can be flexibly rotated relative to the phase correction mirror support. The rotating parabolic mirror 2 is a part taken from a complete rotating par...

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Abstract

The invention discloses a THz wave transmission beaming system realizing large angle adjustability of output direction. The system is characterized by being composed of a corrugated waveguide input / output window, a rotating parabolic reflector and an angle-adjustable phase correction mirror, a transmission system with output field angle adjustable along with output window direction is designed, and high transmission efficiency is maintained within a large angle changing range. A quasi-Gaussian mode is input into the system through over-mode corrugated waveguide and radiated to free space, therotating parabolic reflector receives this quasi-Gaussian wave beam, and angle of the wave beam is changed after reflection while beaming is realized. At the moment, angle of the phase correcting mirror is adjusted correspondingly according to angle of the corrugated waveguide input / output window. The wave beam enters the phase correcting mirror, and phase difference of the section of the wave beam is eliminated, so that a wave beam capable of meeting Gaussian distribution in two aspects of both phase and field intensity is formed and can be well coupled into corrugated waveguide correspondingto the output window.

Description

Technical field: [0001] The invention relates to a mirror transmission beamforming system with large-angle adjustable output direction applied to DNP-NMR, and belongs to the technical field of high-power terahertz wave transmission. Background technique: [0002] Nuclear Magnetic Resonance (NMR) is a physical phenomenon in which atomic nuclei with non-zero spin resonantly absorb and re-emit electromagnetic radiation of a certain frequency under the action of an external magnetic field. NMR is widely used. In security detection, NMR is suitable for non-destructive analysis of samples, especially dangerous samples. In medicine, NMR is often used in medical diagnosis and imaging. In the field of chemistry, NMR spectroscopy is used to determine the molecular structure of compounds. However, the sensitivity of conventional NMR spectroscopy is very low, so sensitivity is critical to the success of this technique. [0003] Since the NMR signal was observed in 1946, many new method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N24/08G01R33/44
CPCG01N24/08G01R33/44
Inventor 刘頔威沈皓王维宋韬邓世超张宁王诚海
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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