Graphene-based circularly-polarized intake antenna for capsule endoscopic device

Abstract

The invention discloses a graphene-based circularly-polarized intake antenna for a capsule endoscope device. The material of each radiation unit and floor of the antenna is a copper-coated graphene film, and the material of the copper-coated graphene film has relatively high carrier density, so that the working bandwidth and gain of the intake antenna can be increased. A graphene double-S combinedstructure radiation patch (4) and a graphene double-S combined structure radiation patch (5) are connected through four short-circuit probes to form a composite spiral structure, so that the circularpolarization characteristic is generated, and the bit error rate is reduced while multipath interference is suppressed. The hook-shaped combined structure of a graphene hook-shaped combined structureradiation patch can reduce the resonant frequency of the antenna and increase the impedance bandwidth of the antenna. The size of the antenna is only Pi*(4.5)<2>mm<3>, and the antenna has the characteristics of wide frequency band, circular polarization, interference resistance, good electromagnetic compatibility, small size and the like. The antenna is suitable for an ISM2.4GHz frequency band, and can meet the working requirements after the complex environment is ingested.

Description

technical field [0001] The present invention relates to the technical field of ingesting antennas for capsule endoscope devices, in particular to graphene-based circularly polarized ingesting antennas for capsule endoscope devices, suitable for circularly polarized ingesting antennas in the ISM 2.4GHz frequency band Capsule endoscopy device. Background technique [0002] With the rapid development of intelligent biomedical technology, capsule endoscopes have gradually changed from traditional wired methods to wireless methods, and the intelligence and miniaturization of capsule endoscopes has become a hot research topic. Compared with traditional endoscopes, wireless endoscopes can realize real-time data transmission with an image transmission rate of more than 2Mbps through an in vitro base station, and realize imaging detection of the digestive system and gastrointestinal system, which is not only conducive to providing accurate and fast diagnosis and treatment data for do...

AI Technical Summary

Problems solved by technology

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

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