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Circularly polarized wearable antenna based on graphene flexible conductive film

A flexible and conductive film technology, which is applied in the field of human body wireless communication systems and circularly polarized wearable antennas, can solve problems such as inability to ensure communication, and achieve the effects of ensuring safety, ensuring flexibility and portability, and high conductivity

Inactive Publication Date: 2019-11-12
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the overall thickness of the antenna form is 6.05mm, and the polarization mode of the antenna is still linear polarization, which cannot guarantee good communication during human movement

Method used

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  • Circularly polarized wearable antenna based on graphene flexible conductive film
  • Circularly polarized wearable antenna based on graphene flexible conductive film
  • Circularly polarized wearable antenna based on graphene flexible conductive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1, a circularly polarized wearable antenna based on graphene flexible conductive film working at 5.8GHz.

[0039] The wearable antenna in this embodiment includes a radiation unit 1 , a dielectric support layer 2 and an artificial magnetic conductor reflection surface 3 from top to bottom. The radiation unit 1 is placed on the medium support layer 2 , and the medium support layer 2 is placed on the reflective surface 3 of the artificial magnetic conductor. The angle between the symmetry line la of the radiation unit 1 and the dielectric support layer 2 and the symmetry line lb of the artificial magnetic conductor reflection surface 3 is 45°, that is, the radiation unit 1 is placed on the side of the artificial magnetic conductor reflection surface 3 at an angle of 45°. Directly above.

[0040] see image 3, the radiating unit 1 includes a radiating unit dielectric plate 11 and a pair of feeding grounds 12 , a feeding central conduction strip 13 and a monopole ...

Embodiment 2

[0043] Example 2, a circularly polarized wearable antenna based on graphene flexible conductive film working at 2.4GHz.

[0044] see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 , the structure of this embodiment is the same as that of Embodiment 1, the difference is that the center frequency of the wearable antenna is 2.4 GHz by changing the following structural parameters.

[0045] The length a of the rectangular patch 311 is adjusted to 34.1 mm, and the width b is adjusted to 29.5 mm.

[0046] Adjust the length L1 of the artificial magnetic conductor medium plate 312 and the rectangular floor 313 to 36.3 mm, and adjust the width W1 to 31.2 mm.

[0047] Adjust the length L3 of the monopole radiation patch 14 to 37mm.

Embodiment 3

[0048] Embodiment 3, a circularly polarized wearable antenna based on graphene flexible conductive film working at 6.5GHz.

[0049] see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 , the structure of this embodiment is the same as that of Embodiment 1, and the parameters are adjusted as follows:

[0050] The length a of the rectangular patch 311 is 12.6 mm, and the width b is 10.9 mm;

[0051] Both the length L1 of the artificial magnetic conductor medium plate 312 and the rectangular floor 313 are 13.4mm, and the width W1 is both 11.5mm.

[0052] The length L3 of the monopole radiation patch 14 is adjusted to 13.7 mm.

[0053] According to the above parameters after adjustment, the center frequency of the wearable antenna can be made to be 6.5 GHz.

[0054] Effect of the present invention can be further illustrated by following simulation:

[0055] 1. Simulation conditions

[0056] Use electromagnetic field full wave simulation software ANSYS18.0.

[00...

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Abstract

The invention discloses a circularly polarized wearable antenna based on a graphene flexible conductive film, and mainly solves the problems that an existing wearable antenna is excessively heavy anddifficult to circularly polarize. The circularly polarized wearable antenna comprises a radiation unit (1), a medium supporting layer (2) and an artificial magnetic conductor reflecting surface (3); the antenna is integrally arranged on the artificial magnetic conductor structure, so that backward radiation is isolated from a human body by an artificial magnetic conductor, and the safety of humantissues is ensured; the radiation unit is placed on the artificial magnetic conductor at an oblique angle of 45 degrees, so that electromagnetic waves of forward radiation and electromagnetic waves reflected by the artificial magnetic conductor act together to form a working mode of circular polarization of the antenna; and a flexible dielectric slab is used as a substrate of the radiation unit and the reflection surface of the artificial magnetic conductor, and the graphene conductive film is used as a conductor material of the radiation unit and the reflection surface of the artificial magnetic conductor, so that the flexible characteristics of the antenna are guaranteed, and the weight of the antenna is reduced. The wearable antenna can be used in a human body wireless communication system.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a circularly polarized wearable antenna, which can be used in human body wireless communication systems. Background technique [0002] With the rapid development of wireless communication technology and the rise of wearable electronic devices, the body-centered wireless communication system has become one of the current research hotspots. Human body wireless communication system, as an important part of the fourth generation mobile communication, plays an important role in the fields of medical rehabilitation, health monitoring, sports and fire safety. The antenna is an indispensable radio device for transmitting and receiving electromagnetic waves, and is an important link in a wireless communication system. The performance of the antenna will directly affect the quality of the communication system. In order to meet the requirements of human body communication technology, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q9/40H01Q1/36H01Q1/38H01Q1/48H01Q1/50H01Q1/08H01Q19/10H01Q15/14H01Q1/27
CPCH01Q1/085H01Q1/273H01Q1/368H01Q1/38H01Q1/48H01Q1/50H01Q9/40H01Q15/14H01Q19/104
Inventor 吴边祖浩然张亚辉赵雨桐樊炽
Owner XIDIAN UNIV
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