Metasurface micro antenna array based on multiple-height structure

Abstract

The invention provides a metasurface micro-antenna array based on a multiple-height structure. The metasurface is composed of a cuboid substrate and thirty-two identical array units, the array units are uniformly distributed on the cuboid substrate, four array units exist in each row, and eight array units exist in each column; each array unit is formed by arranging a one-time-high solid cylinder, a two-time-high solid cylinder and a three-time-high hollow cylinder in the transverse direction according to the sequence from low to high, and intervals exist among the three cylinders; in the field of terahertz communication, a diffraction phenomenon occurs when a light beam enters an array structure, incident energy is concentrated in a specific diffraction order, and energy in other diffraction orders is obviously inhibited, so that high-efficiency transmission is realized; and the antenna array can be used for designing and designing a plane lens with high numerical aperture and high efficiency or other devices in the terahertz range, and the structure is manufactured by utilizing a commercial 3D printer, so that the defects that the traditional terahertz device is high in cost and difficult to manufacture are overcome.

Description

technical field [0001] The invention relates to the field of terahertz technology, in particular, to a supersurface micro-antenna array based on a double-height structure. Background technique [0002] Terahertz waves are electromagnetic waves with a frequency range of 0.1 to 10 THz, and the terahertz wave band is located between the microwave band and the visible light band. Compared with X-rays, terahertz waves have lower single-photon energy, less damage to biological cells, and can be used in medical diagnosis and safety detection; compared with microwaves, terahertz waves not only have smaller wavelengths , and also covers a wealth of spectrum resources, and terahertz communication technology has the characteristics of large capacity and high confidentiality, so it can be used as the working frequency band of the next generation of 6G communication. Since the vibration frequency of most material molecules is in the terahertz band, terahertz spectroscopy can also be use...

AI Technical Summary

Problems solved by technology

However, compared with the fields of microwave and infrared waves, the research on terahertz technology started relatively late, and the technology is not mature enough, especially in the field of terahertz devices.

Due to the lack of materials for regulating terahertz waves in nature, existing terahertz devices face problems such as large volume, heavy weight, low efficiency, and lack of varieties.

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