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Graphene annular loop fan-shaped loading patch-based implantable circularly polarized antenna

A technology of circularly polarized antennas and loop loops, which is suitable for antennas, antennas, and antenna couplings on movable objects. It can solve the problems of less research on graphene, achieve good conductivity, increase coupling capacitance, and reduce interference. Effect

Pending Publication Date: 2019-10-18
JINLIN MEDICAL COLLEGE
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Domestic and foreign scholars' research on graphene materials in the field of antennas mainly focuses on terahertz antennas, pattern reconfigurable antennas, filter antennas, flexible antennas, and wearable antennas. There are relatively few studies on graphene materials in implantable antennas.

Method used

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  • Graphene annular loop fan-shaped loading patch-based implantable circularly polarized antenna
  • Graphene annular loop fan-shaped loading patch-based implantable circularly polarized antenna
  • Graphene annular loop fan-shaped loading patch-based implantable circularly polarized antenna

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Embodiment

[0036] Embodiment: The specific manufacturing process is as described in the embodiment. Select Rogers RO3210 dielectric substrate, dielectric constant ε r = 10.2, loss tangent tanδ = 0.003, thickness H = 0.635mm, coaxial connectors adopt standard SMA connectors. Graphene ring loop loading radiation patch 2 and graphene floor 6 are made of multi-layer graphene film, the material of multi-layer graphene film has good conductivity, using multi-layer graphene film to process the antenna can improve the performance of the antenna, effectively Reduce loss and improve transmission efficiency. The thickness of the multilayer graphene film is 0.03mm, and the radius R of the dielectric substrate 1 8 5.5mm. By adding four sector-shaped loading patches on the loop loop, the design size of the antenna can be effectively reduced. Between the four sector-shaped loading patches, rectangular branches with the same size and interlaced with each other are added to form an interdigitated cap...

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Abstract

The invention discloses a graphene annular loop fan-shaped loading patch-based implantable circularly polarized antenna. The radiation patch and ground plate of the antenna are both made of multilayergraphene films; since the multilayer graphene films are adopted to process the antenna, the performance of the antenna can be improved, loss is effectively reduced, and transmission efficiency is improved. Four fan-shaped loading patches are additionally arranged on an annular loop, and therefore, the design size of the antenna can be effectively reduced. Rectangular stubs which have the same size and are arranged in a staggered manner are additionally installed between the four fan-shaped loading patches, so that an interdigital capacitor structure is formed, and therefore, the resonance frequency of the implantable antenna is reduced. Conduction bands are slotted, and rectangular open-circuit protrusions are additionally adopted, and therefore, geometric perturbation is generated, and acircular polarization characteristic is generated. The size of the antenna is only 5.5*5.5*0.635mm<3>. The graphene annular loop fan-shaped loading patch-based implantable circularly polarized antenna has the advantages of wide frequency band, circular polarization, miniaturization, good anti-interference performance, good biocompatibility and the like. The antenna is suitable for a WMTS 1.43GHzfrequency band. The working requirements of the antenna implanted into a complex environment can be satisfied.

Description

technical field [0001] The invention relates to the technical field of implantable antennas, in particular to an implantable circularly polarized antenna based on a graphene-based circular loop fan-shaped loading patch, which is suitable for circularly polarized implantable biomedical devices in the WMTS 1.43GHz frequency band. Background technique [0002] With the emergence of social problems such as the surge of sub-healthy populations and the aging of the population, mobile medical care has attracted people's attention. Wireless human body LAN is a key technology for mobile medical care. Its function is to communicate human physiological information with hospitals, hospitals, Home network and big data platform to communicate. Implantable medical devices such as intracranial pressure monitoring, subcutaneous blood sugar monitoring, and artificial retina are specific ways to assist or expand medical diagnosis and treatment. Implantable antennas transmit human physiological...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/27H01Q1/36H01Q1/38H01Q1/48H01Q1/52H01Q15/24
CPCH01Q1/273H01Q1/368H01Q1/38H01Q1/48H01Q1/526H01Q15/24
Inventor 欧仁侠张华磊鲍捷祝颖陈洪斌张光雷
Owner JINLIN MEDICAL COLLEGE
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