崔文杰,李子巍,刘阔,等. 用于口舌驱动系统的双频植入式天线设计[J]. 电波科学学报,2023,38(2):244-252. DOI: 10.12265/j.cjors.2022019
      引用本文: 崔文杰,李子巍,刘阔,等. 用于口舌驱动系统的双频植入式天线设计[J]. 电波科学学报,2023,38(2):244-252. DOI: 10.12265/j.cjors.2022019
      CUI W J, LI Z W, LIU K, et al. Design of dual-band implantable antenna for intra-oral tongue drive system[J]. Chinese journal of radio science,2023,38(2):244-252. (in Chinese). DOI: 10.12265/j.cjors.2022019
      Citation: CUI W J, LI Z W, LIU K, et al. Design of dual-band implantable antenna for intra-oral tongue drive system[J]. Chinese journal of radio science,2023,38(2):244-252. (in Chinese). DOI: 10.12265/j.cjors.2022019

      用于口舌驱动系统的双频植入式天线设计

      Design of dual-band implantable antenna for intra-oral tongue drive system

      • 摘要: 口舌驱动系统是一种能够为丧失自主生活能力的患者提供帮助的辅助技术. 为了满足该系统工作需求并为其提供良好的无线通信能力,提出了一种具有双频、柔性、宽频和小型化特性的植入式天线设计方案. 考虑计算时间及设计方案的可行性,天线的设计在单层人体肌肉模型中完成,为了探究天线在口舌驱动系统中的性能表现,提出了多层人体口腔模型. 借助曲流结构和缺陷地结构实现了天线的小型化设计,通过调整天线的馈电点位置,实现了天线的双频和宽带特性,通过在天线上下表面涂覆与介质基板相同材料的保护层,避免了天线与人体的直接接触从而提高了生物安全性. 通过仿真确定了天线的最佳几何结构,并在新鲜猪肉和皮肤仿真液中进行测量,结果表明,该天线能够稳定工作在0.433 GHz和2.45 GHz频段. 天线在两个频段的阻抗带宽分别达到了78.2%和34.2%,而整体尺寸仅为10 mm×10 mm×0.35 mm,同时天线表现出较低的比吸收率值. 在此基础上,进行了远场数据传输测试,结果表明天线具有良好的远场传输能力,能够满足口舌驱动系统的应用需求.

         

        Abstract: Intra-oral tongue drive system(ITDS) is an assistive technology that can help patients who have lost their ability of independent life. To meet the working requirements of the ITDS and to provide good wireless communication capability, an implantable antenna with dual-band, flexible, broadband and miniaturized characteristics is proposed. Considering the computational time and the feasibility of the design scheme, the antenna is designed in a single-layer human muscle model. Then a multi-layered human oral cavity model is used to verify the performance of the antenna in the ITDS. The compact structure of the antenna is achieved by the curved flow structure and defective ground structure; and with help of the feed point position, the dual-band and broadband characteristics of the antenna are realized. Furthermore, to avoid the direct contact between the antenna and human body and improve the safety, a protective layer is introduced by coating the same material as the dielectric substrate on the upper and lower surfaces of the antenna. After simulation and calculation, the antenna sample is fabricated and measured in the fresh mince pork and simulation fluid. The results show that the antenna can work stabely in 0.433 GHz and 2.45 GHz bands. In addition, the impedance bandwidth reaches 78.2% and 34.2%, the size is only 10 mm×10 mm×0.35 mm, while the antenna exhibits a low specific absorption rate value. The remote field data transmission capability is tested and the results indicate that the antenna has good far-field transmission capability, which can meet the application requirements of the ITDS.

         

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