Graphene-based frequency reconfigurable antenna

A technology for reconstructing antennas and graphene, which is applied to antennas, devices that make antennas work in different bands at the same time, structures of radiating elements, etc. The effect of electrical conductivity and strong practicality

Active Publication Date: 2016-04-27
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] What the present invention aims to solve is that the frequency control of existing antennas cannot achieve continuous insufficiency, and a graphene-based frequency reconfigurable antenna is provided

Method used

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  • Graphene-based frequency reconfigurable antenna

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Embodiment Construction

[0029] Graphene has a unique two-dimensional planar structure and electrical conductivity and electrical adjustable characteristics. According to the Kubo formula, it can be known that in the microwave, terahertz band or infrared band, the chemical potential has a significant effect on the conductivity of graphene, and the change of the chemical potential will affect the positive and negative properties of the imaginary part of the conductivity. As the chemical potential of graphene increases, the imaginary part of its conductivity becomes positive, and it can conduct alternating current at this time. As the chemical potential of graphene decreases, the imaginary part of its conductivity can become negative, and it will not be able to conduct alternating current at this time. The chemical potential of graphene is proportional to the applied bias electric field, and the applied bias electric field is controlled by its applied bias voltage. Therefore, applying a bias voltage to g...

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Abstract

The invention discloses a frequency reconfigurable antenna based on graphene. The frequency reconfigurable antenna comprises an antenna body, and the antenna body comprises a feed port, an upper graphene layer, a middle non-conductive medium layer and a lower conductive medium layer. An upper interface is formed on the intersection face of the non-conductive medium layer and the graphene layer, and a lower interface is formed on the intersection face of the non-conductive medium layer and the conductive medium layer. The feed port is arranged at one end of the graphene layer, and the vertical distance between the upper interface and the lower interface is gradually changed from the position under the feed port to the other side. Or, the feed port is arranged in the middle of the graphene layer, and the vertical distance between the upper interface and the lower interface is symmetrically and gradually changed from the position under the middle feed port to the two sides. The work frequency of the antenna can be continuously regulated and controlled by regulating extra bias voltages, and the defect that the frequency of former frequency reconfigurable antennas cannot be continuously tuned is overcome.

Description

Technical field [0001] The invention relates to the field of antennas, in particular to a graphene-based frequency reconfigurable antenna. Background technique [0002] With the development and progress of electronic science and technology, the rapid increase in the number and demand of users has made the electromagnetic spectrum crowded, and the demand for communications and radar has forced the frequency band to expand to high and wide frequencies. Therefore, the number of antennas will inevitably increase accordingly. However, the integration of a large number of antennas in a single system will cause serious electromagnetic interference between the various subsystems, and it is difficult to achieve mutual compatibility, resulting in the deterioration of the working performance of the antennas. In order to reduce the weight of the communication platform with integrated antennas, reduce the cost of large-scale commercial production, and achieve good electromagnetic compatibili...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H01Q1/38H01Q5/10
Inventor姜彦南袁锐王扬曹卫平王娇
OwnerGUILIN UNIV OF ELECTRONIC TECH