Liquid crystal optics phased-array antenna implementation method

A technology of phased array antenna and liquid crystal optics, which is applied in the field of satellite laser communication and laser radar, to achieve the effect of solving quasi-continuous and guaranteed performance

Active Publication Date: 2014-02-12
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: Aiming at the technical characteristics of discontinuous scanning of liquid crystal optical phased array beams and the development requirements of quasi-continuous deflection control of beams, a method for realizing liquid crystal optical phased array antennas is provided, which solves the problem of satellite optical communication on beams. Quasi-continuous, high-precision deflection control requirements ensure the performance of the satellite laser communication system

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  • Liquid crystal optics phased-array antenna implementation method

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Embodiment Construction

[0012] Such as figure 2 As shown, the liquid crystal optical phased array antenna of the present invention includes glass substrates 21 and 27 , liquid crystal 24 , alignment layers 23 and 25 , common electrode 26 , and grating electrode 22 . The liquid crystal optical phased array antenna adopts pure phase modulation to achieve the effect similar to the transmission blazed grating. The working performance of the liquid crystal blazed grating is largely determined by the control ability of the parallel electrodes. The total width of multiple electrodes in the periodic unit of the liquid crystal blazed grating is equivalent to the grating constant, and the grating constant is changed by changing the number of electrodes of the grating electrode 22 to realize the change of the diffraction angle, and then by adjusting the voltage distribution in the periodic unit, a certain The light of the order is shining. The diffraction angle of the blazed grating is determined by the grati...

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Abstract

The invention discloses a liquid crystal optics phased-array antenna implementation method. A liquid crystal optics phased-array antenna comprises a common electrode and a grating electrode, the common electrode is designed into a high impedance liquid crystal optical wedge electrode, and two electrodes are arranged at the two ends of the high impedance liquid crystal optical wedge electrode for respectively loading voltage with different voltage values to generate one slope phase distribution, which is equivalent to a liquid crystal prism with an adjustable slope gradient, so continuous deflection control can be performed over an incident wave beam, and meanwhile, the quantitative voltage is loaded onto the grating electrode, so that stepping deflection control over the incident wave beam can be realized.

Description

technical field [0001] The invention relates to a method for realizing a liquid crystal optical phased array antenna, and belongs to the technical fields of satellite laser communication and laser radar. Background technique [0002] In recent years, laser communication technology has developed rapidly. With the development of satellite laser communication technology, it is necessary to establish a satellite laser communication network to realize communication between one satellite and multiple satellites, that is, multi-user access technology. At present, the laser communication system researched at home and abroad is a point-to-point single-link data transmission system, which adopts mechanical capture and tracking mechanism and traditional capture and tracking strategy. Due to the long distance of the satellite laser communication link and the limited laser emission power, the divergence angle of the laser beam needs to be as close as possible to the diffraction limit. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1343
Inventor 谭庆贵汪相如李小军蒋炜梁栋朱忠博刘丰
Owner XIAN INSTITUE OF SPACE RADIO TECH
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