| 一款用于无线胶囊内窥镜的微带天线设计与仿真 |
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| 引用本文： | 赵德春,张龙生,马成群. 一款用于无线胶囊内窥镜的微带天线设计与仿真[J]. 传感技术学报, 2014, 27(8) |
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| 作者姓名： | 赵德春 张龙生 马成群 |
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| 作者单位： | 重庆邮电大学光电工程学院; |
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| 基金项目： | 重庆市博士后基金项目(Rc201317) |
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| 摘 要： | 基于时域有限差分方法,采用真实人体数字三维模型,仿真了天线在人体消化道内辐射情况,分析了天线结构参数对天线辐射性能的影响。针对无线胶囊内窥镜(Wireless Capsule Endoscopy,WCE)在人体消化道内工作特点,设计了一款能够用于发送消化道内图像数据的WCE微带天线,该微带天线谐振频率为500 MHz,输入回波损耗S11-10 dB时相对带宽为8%,带内VSWR2.0,最后采用仿真优化后的结构参数和材料制作了天线,并进行了测试,得到了满足实际应用要求的微带天线。
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| 关 键 词： | 无线胶囊内窥镜 微带天线 中心频率 FDTD算法 |
A Micro-strip Antenna for Wireless Capsule Endoscopy System Design and Simulation |
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| Abstract: | Based on finite-difference time-domain method, this paper simulated the antenna radiation in the human digestive, and analyzed the influence of structural parameters on the radiation performance by the real three-dimensional digital human model. According to the characteristics of wireless capsule endoscopy working in the human digestive tract, a micro-strip antenna was designed for transmitting digestive tract data. The resonant frequency of designed antenna is 500MHz, and the relative bandwidth is 8% when the return loss S11 is less than -10dB. Within bandwidth the VSWR is below 2.0. The antenna was made of high-frequency dielectric materials. The result of experiment indicated that the antenna is adequate for the actual application of wireless capsule endoscope. |
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| Keywords: | Wireless capsule endoscopy micro-strip antenna center frequency finite-difference time-domain method |
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