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Liquid crystal metamaterial antenna array for terahertz beam regulation and control

A technology of liquid crystal materials and metamaterials, applied in the field of terahertz wave control, can solve problems such as large insertion loss, low efficiency of terahertz beam control, and small phase shift control range, and meet the requirements of simplification, flexible and convenient control methods, and preparation methods simple effect

Active Publication Date: 2019-10-25
NANJING UNIV
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Problems solved by technology

The phase shift control range of such devices for terahertz waves is usually small, and the insertion loss is large, resulting in low efficiency of terahertz beam control

Method used

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  • Liquid crystal metamaterial antenna array for terahertz beam regulation and control
  • Liquid crystal metamaterial antenna array for terahertz beam regulation and control
  • Liquid crystal metamaterial antenna array for terahertz beam regulation and control

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of use of the present invention, after having read the present invention, those skilled in the art will understand each aspect of the present invention The modifications of all equivalent forms all fall within the scope defined by the appended claims of the present application.

[0023] The invention discloses a terahertz antenna array based on digital and programmable metamaterials (also known as metasurfaces, metamaterials, metasurfaces, and artificial electromagnetic media) with liquid crystal materials as tuning units, which has spatial beam dynamics Control function. The metamaterial unit consists of a metal structure grown on the upper / lower quartz substrate and a liquid crystal layer sandwiched between the two metal struc...

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Abstract

The invention discloses a liquid crystal metamaterial antenna array for terahertz beam regulation and control, which comprises an upper quartz substrate, a lower quartz substrate, a metal metamaterialstructure grown on the upper quartz substrate, a metal grounding plane structure grown on the lower quartz substrate and a liquid crystal material sealed between the metal metamaterial structure andthe metal grounding plane structure. The invention further discloses a method for preparing the terahertz liquid crystal metamaterial antenna array and a beam regulation and control method and a characterization method by using the terahertz liquid crystal metamaterial antenna array. According to the invention, the dynamic regulation and control of terahertz beams within a certain angle space range are realized, the device is simple in structure, and the regulation and control method is flexible and convenient.

Description

technical field [0001] The invention belongs to the technical field of terahertz wave control, in particular to a liquid crystal metamaterial antenna array for terahertz beam control, in particular to a liquid crystal material as a tuning unit, based on digital and programmable metamaterials (also known as super Surface, metamaterial, metasurface, artificial electromagnetic medium) preparation and application of terahertz antenna array. Background technique [0002] Terahertz technology has developed rapidly in the past two decades, and has shown great application potential in the fields of imaging, biomedicine, high-speed wireless communication, and national defense security. Among them, in the fields of terahertz communication and radar imaging, beam steering devices with high efficiency and large scanning range are essential. However, compared with the more mature semiconductor phase shifters and ferrite phase shifters in the microwave band, there is a lack of materials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/48H01Q3/36H01Q3/44H01Q21/00
CPCH01Q3/36H01Q3/44H01Q1/48H01Q21/0087H01Q21/00
Inventor 吴敬波沈泽陈本纹王涛锋金飚兵张彩虹陈健吴培亨
Owner NANJING UNIV
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