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Terahertz Planar Lens Antennas Matched with Near-Zero-Index Metamaterials

A technology of lens antenna and plane lens, which is applied to antennas, electrical components, etc., can solve the problems of low gain of plane antennas in the terahertz frequency band

Inactive Publication Date: 2016-01-20
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0003] Aiming at the above-mentioned defects of the prior art, the present invention proposes a terahertz planar lens antenna matching a near-zero refractive index metamaterial, and applies a matching near-zero-refractive index metamaterial technology to solve the For example) the problem of low gain, can provide a small size, low cost, stable structure, high gain antenna

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  • Terahertz Planar Lens Antennas Matched with Near-Zero-Index Metamaterials
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  • Terahertz Planar Lens Antennas Matched with Near-Zero-Index Metamaterials

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] As a preferred embodiment of the present invention, the structure of matching near-zero refractive index metamaterial lens antenna is as follows figure 1 shown. The invention includes log-periodic antennas and metamaterial lenses.

[0020] The top view of the structure of the metamaterial lens antenna is shown in figure 1 As shown in (a): the metal sheet of the log-periodic antenna is pasted on the upper surface of the dielectric plate, and placed directly above the matching near-zero refractive index metamaterial lens, and the matching near-zero refractive index metamaterial lens is placed under the dielectric plate Surface: The structure of the upper and lower surfaces of the matching near-zero refractive index metamaterial lens is exactly the same, and the positions are completely symmetrical.

[0021] The structure of th...

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Abstract

The invention relates to a THz (Terahertz) planar lens antenna matched with a near-zero refractive index metamaterial. The THz planar lens antenna is suitable for a planar high-gain antenna of a THz frequency band. By utilizing the characteristic that the refractive index of a lens which is matched with the near-zero refractive index metamaterial is near zero, electromagnetic wave radiated by an antenna can be focused, and thus the purposes of increasing the antenna gain and enhancing the directivity are achieved. The impedance of the lens which is matched with the near-zero refractive index metamaterial is approximately equal to that of an antenna dielectric plate, thus the antenna and the lens can be directly connected without being supported by a support, the whole size and the processing difficulty of the antenna are reduced, the mechanical strength and the stability of the antenna are increased, and the advantages are particularly outstanding for the antenna with smaller physical size in the THz frequency band.

Description

technical field [0001] The invention relates to a terahertz planar lens antenna matching a near-zero refractive index metamaterial, which is suitable for planar high-gain antennas in the terahertz frequency band. Background technique [0002] Terahertz technology has been widely used in military and civilian applications, such as radar, electronic countermeasures, security inspection and non-destructive testing. Antennas are key components in radar, communication and imaging systems, and the design and implementation of high-performance antennas in the terahertz frequency band is an important research topic. However, due to the shortcomings of traditional metals, dielectrics, and semiconductors in the terahertz frequency range, such as large loss, large dispersion, and low electron mobility, conventional processing techniques cannot fully meet the requirements of terahertz antennas. The integrated extended hemispherical lens antenna has been widely used in terahertz systems...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q19/06H01Q15/02
Inventor 司黎明刘埇张庆乐吕昕
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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