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Graphene based beam-scanning reflecting antenna array and beam scanning method

A reflective antenna and beam scanning technology, which is applied in the directions of antenna arrays, antenna arrays, antennas, etc. that are powered separately, can solve the problems of unscannable and discrete component size reduction.

Inactive Publication Date: 2018-03-20
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, as the beam frequency increases, the size of the discrete elements needs to be reduced accordingly, and the existing planar reflectarray antenna cannot scan the beam with high frequency (such as the terahertz frequency band)

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  • Graphene based beam-scanning reflecting antenna array and beam scanning method
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  • Graphene based beam-scanning reflecting antenna array and beam scanning method

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] The planar reflective antenna array can achieve beam scanning with high radiation efficiency by designing the reflective amplitude and phase of the radiating elements and combining them into an array reasonably. In the existing planar reflectarray antenna, the reflective unit is a discrete element such as a varactor diode, a PIN diode switch or a MEMS switch. However, as the beam frequency increases, the size of the discrete elements needs to be reduced...

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Abstract

The embodiment of the invention provides a graphene based beam-scanning reflecting antenna array and a beam scanning method. The reflecting antenna array comprises a plurality of graphene reflecting blocks, a dielectric substrate layer and a grounding metal plate, and is characterized in that each graphene reflecting block comprises a plurality of graphene reflecting units, and the graphene reflecting unit are located at the upper surface of the dielectric substrate layer; the adjacent graphene reflecting units in the same graphene reflecting block are mutually connected; the plurality of graphene reflecting blocks are connected into a plurality of graphene reflecting block links in a chain type manner; the graphene reflecting units are micron-sized reflecting units; and the grounding metal plate is located at the lower surface of the dielectric substrate layer. The graphene reflecting units are micron-sized reflecting units, so that beam scanning for a terahertz frequency band can berealized, and the miniaturization of the reflecting antenna array can be achieved.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a graphene-based beam scanning reflective antenna array and a beam scanning method. Background technique [0002] Beam scanning has a wide range of applications in wireless and sensing systems, including satellite communications and radar. The traditional aperture antenna realizes adaptive scanning by using mechanical scanning, but its scanning speed is limited by the rotation rate of the mechanical motor, so the scanning speed is slow. Phased-array antenna arrays allow real-time reconfiguration and scanning of beam patterns with electronic flexibility, but the feed network complexity and energy consumption of phased-array antennas lead to high implementation costs. Compared with the above-mentioned antennas, the planar reflectarray antenna has the advantages of convenient beam scanning and high radiation efficiency. [0003] In the existing planar reflectarray a...

Claims

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Application Information

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IPC IPC(8): H01Q1/48H01Q3/46H01Q15/14H01Q21/06
CPCH01Q1/48H01Q3/46H01Q15/145H01Q15/148H01Q21/061
Inventor 姚远殷越俞俊生
Owner BEIJING UNIV OF POSTS & TELECOMM
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