Implanted type circularly polarized antenna applied to wireless medical telemetering

Abstract

The invention discloses an implanted type circularly polarized antenna applied to wireless medical telemetering. The implanted type circularly polarized antenna comprises an antenna radiating unit, ametal floor, upper and lower layer dielectric substrates and a feeding unit, wherein the antenna radiating unit is printed between the upper and lower layer dielectric substrates, the metal floor is arranged on the lower surface of the lower layer dielectric substrate, and the antenna radiating unit comprises a triangular structure, an arrow structure and a slit structure. The implanted type circularly polarized antenna disclosed by the invention has the advantages of small size, high gain, interference resistance, biocompatibility and the like.

Description

technical field [0001] The invention relates to the field of biomedical telemetry, in particular to an implantable circularly polarized antenna applied to wireless medical telemetry. Background technique [0002] With the aging population and increasing work pressure, people pay more and more attention to health and medical care, and the unique convenience has led to extensive research on medical devices implanted in the human body. As a key device for wireless communication between implantable biomedical sensors and in vitro equipment, implantable antennas' performance will affect the information transmission capabilities of the entire system. Implantable antennas are different from ordinary communication antennas. Since the antenna needs to be implanted into the human body, the human body is composed of multiple layers of lossy tissue media (skin, fat, muscle) with different characteristics (different shapes, different electromagnetic properties), and the dielectric const...

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Problems solved by technology

Since the antenna needs to be implanted into the human body, the human body is composed of multiple layers of lossy tissue media (skin, fat, muscle) with different characteristics (different shapes, different electromagnetic properties), and the dielectric constant and conductivity of these tissues vary with each other. As the frequency changes, these constitute a complex and special working environment for implanted antennas. The performance of the antenna is greatly affected by human tissue, so the antenna's miniaturization, broadband, biocompatibility, safety, anti-interference ability and Antenna performance such as low power consumption poses many challenges

[0003] Due to human body movement, it is impractical to maintain a certain angle and distance between the implanted antenna and the external receiving antenna; and due to the complex indoor background environment, there will be multipath scattering

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