体域网可穿戴超宽带天线及可植入天线的设计

发布时间：2018-06-09 03:19

本文选题：体域网 + 超宽带　；参考：《大连海事大学》2017年硕士论文

【摘要】：近年来,随着移动通信和无线生理传感器等技术的发展,无线体域网(Wireless Body Area Network,WBAN)这一短距离无线通信新兴技术得到了越来越多的关注。超宽带技术由于其高速率和低发射功率的显著特点,已经成为实现无线体域网的最佳候选技术之一。可穿戴超宽带天线的设计也对传统的天线设计理论提出了新的挑战。微电子技术不断进步,带动了植入式装置往小型化方向的发展。为了实现整体装置尺寸的降低,如何实现天线的小型化、提高天线的性能是目前研究人员必须要解决的问题。本文的主要工作和成果如下:(1)结合可穿戴天线的舒适度需求,利用电磁仿真软件HFSS,基于柔性印刷电路板技术,设计了一款柔性超宽带(Ultra WideB3and,UWB)原型单极子天线,然后研究了原型单极子天线在体域网中的性能,通过加载反射板的方法来减小天线对人体的辐射,最后对所设计的天线进行了加工和测试,实验结果表明,加载反射板后,该天线在体域网中的后向辐射较小,且在平直放置和与手臂共形弯曲的两种情况下其阻抗带宽都覆盖了整个UWB频段。(2)通过引入新的金属地结构,基于原型单极子天线设计了一款引入括号形金属地结构的括号地超宽带天线,该天线工作在超宽带频段的高频段(6-10GHz),通过引入括号形金属地结构,改善了该天线在UWB高频段的辐射方向性。(3)设计了两款超宽带陷波天线,通过在原型单极子天线上加载半波长开路谐振器或四分之一波长短路谐振器的方法,实现了超宽带天线的陷波功能,并将其应用于体域网中。仿真和测试结果表明,本文设计的两款超宽带陷波天线在平直放置和与手臂共形弯曲的两种情况下其阻抗带宽都覆盖了整个UWB频段并都在WLAN5.8GHz频段处形成了陷波。(4)结合可植入天线的小型化需求,通过曲流、叠层、开槽等方式,设计了一款应用于植入型医疗传输服务(Medical Implant Communication Servers,MICS)的单频可植入天线和一款工作在MICS和工业、科学、医疗的ISM2.4GHz频段的双频可植入天线。对比现有的同类研究,本文设计的可植入天线在与现有的可植入天线保持相当的增益的情况下,有效地减小了天线的体积。
[Abstract]:In recent years, with the development of mobile communication and wireless physiological sensor technology, Wireless body Area Network (WBAN), a new short-range wireless communication technology, has been paid more and more attention. Ultra-wideband (UWB) technology has become one of the best candidate technologies for wireless body area network (WLAN) because of its high speed and low transmission power. The design of wearable UWB antenna also poses a new challenge to the traditional antenna design theory. Advances in microelectronics technology have led to the development of implantable devices towards miniaturization. In order to reduce the size of the whole device, how to realize the miniaturization of the antenna and improve the performance of the antenna is a problem that must be solved by researchers at present. The main work and results of this paper are as follows: (1) combining with the comfort requirement of wearable antenna, using electromagnetic simulation software HFSS, based on flexible printed circuit board technology, a prototype monopole antenna of flexible ultra-wideband (Ultra WideB3 and UWB) is designed. Then the performance of the prototype monopole antenna in the body-domain network is studied. The radiation of the antenna to the human body is reduced by loading the reflector. Finally, the designed antenna is machined and tested. The experimental results show that, after loading the reflector, The antenna has less backward radiation in the body area network, and its impedance bandwidth covers the entire UWB band in both cases of straight placement and conformal bending with the arm) by introducing a new metal ground structure. Based on the prototype monopole antenna, a bracketed ultra-wideband (UWB) antenna with metal ground structure is designed. The antenna works in the high frequency band of UWB (6-10GHz). Two ultra-wideband notch antennas are designed by loading half-wavelength open-circuit resonator or 1/4 wavelength short-circuit resonator on the prototype monopole antenna. The notch function of UWB antenna is realized and applied to body area network. Simulation and test results show that, The two UWB notch antennas designed in this paper cover the entire UWB band and form notch 4 at the WLAN 5.8 GHz band in both cases of flat placement and conformal bending of the arm, and combine the miniaturization requirements of the implantable antennas. By means of meandering, lamination and grooving, a single frequency implantable antenna applied to implanted medical transmission service, Medical Implant Serversus Micros, and a dual-frequency implantable antenna working in the ISM 2.4 GHz band of mics and industry, science and medicine are designed. Compared with the existing similar research, the implantable antenna designed in this paper can effectively reduce the volume of the antenna under the condition that the gain is equal to that of the existing implantable antenna.
【学位授予单位】：大连海事大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN822

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