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Reconfigurable antenna based on graphene coating

A technology for reconstructing antennas and graphene, which is applied in the field of antennas, can solve problems such as implementation troubles, and achieve the effect of strong practicability, convenience and broadband

Active Publication Date: 2015-12-16
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods of changing the direction pattern all need to add extra components to realize, so it is relatively troublesome to implement

Method used

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  • Reconfigurable antenna based on graphene coating
  • Reconfigurable antenna based on graphene coating

Examples

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Embodiment 1

[0027] A reconfigurable antenna based on graphene coating, including the antenna body, its structure is as follows figure 1 As shown, the antenna body includes a ground plane 1 and a monopole 5 antenna model composed of a monopole 5 standing on the ground plane 1 . Both the above-mentioned grounding plate 1 and the monopole 5 are made of metals with high electrical conductivity such as gold, silver, aluminum, copper or iron. The structures of the ground plate 1 and the monopole 5 are the same or similar to those of the prior art. In order to increase the bandwidth of the antenna, the antenna body further includes a hollow cylindrical dielectric sleeve 3 that penetrates up and down. The dielectric sleeve 3 is made of silicon dioxide, aluminum oxide, gallium arsenide, FR4 or other dielectric materials. Its shape can be cylindrical or polyhedral. The dielectric sleeve 3 is located above the ground plate 1 and placed on the periphery of the monopole 5 , that is, the monopole 5 ...

Embodiment 2

[0033] Another reconfigurable antenna based on graphene coating, including the antenna body, has a structure such as figure 2 shown. The structure of the antenna body is substantially the same as that of the antenna in embodiment 1, except that the graphene coating 2 and the silicon coating 4 in embodiment 1 are all coated on the dielectric sleeve 3 as a whole, which The bandwidth of the antenna can be increased. However, the graphene coating 2 and / or the silicon coating 4 in the present embodiment are coated at intervals, which can enable the antenna to have frequency or pattern reconfigurable performance. Specifically, there are three ways:

[0034] Method 1: Graphene coating 2 interval coating method. The graphene coating 2 is longitudinally divided into n mutually independent and insulated equal parts, and each equal part forms a longitudinally extending graphene sheet. The number n of graphene sheets coated on the surface of one side of the dielectric sleeve 3 is rel...

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Abstract

The invention discloses a reconfigurable antenna based on a graphene coating. The reconfigurable antenna comprises an antenna body which comprises a ground plate and a monopole erected on the ground plate. The antenna body further comprises a dielectric sleeve which is thoroughly through and shaped like a hollow cylinder. The dielectric sleeve is positioned on the group plate and at the outer periphery of the monopole. One of inner and outer side surfaces of the dielectric sleeve is coated with a grapheme coating, and the other is coated with a silicon coating. Each of the graphene coating and the silicon coating is connected with one end of external offset voltage, and a certain gap is reserved between the graphene coating or the silicon coating connected with the anode of the external offset voltage and the ground plate. The external offset voltage is controlled by dividing the graphene coating and the silicon coating into multiple blocks, so that the antenna is enabled to have characteristics of wide band, reconfigurable frequency and / or reconfigurable radiation pattern.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a graphene coating-based reconfigurable antenna. Background technique [0002] With the development and progress of electronic science and technology, higher and higher requirements are put forward for antenna terminals that play a key role in communication systems. For example, antennas are required to have broadband or frequency reconfigurable performance, as well as directional patterns. Reconfigurable characteristics, the realization of these performances is of great significance to reduce the number of antennas, reduce the size of the communication system, reduce the complexity of the system and the cost of the communication system. In order to achieve the above characteristics, on an antenna or antenna array, some parameters of the antenna can be adjusted independently, such as the size and structure of the antenna, or adding a high-impedance surface to the antenna, so tha...

Claims

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Application Information

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IPC IPC(8): H01Q1/38
Inventor 朱四新姜彦南袁锐曹卫平高超宁其他发明人请求不公开姓名
Owner GUILIN UNIV OF ELECTRONIC TECH
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