A Circularly Polarized Omnidirectional Antenna for Wireless Capsule Endoscope System
A Circularly Polarized Omnidirectional Antenna for Wireless Capsule Endoscope System
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DOI：
10.1109/tap.2020.3026908
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发表时间：
2021-04
影响因子：
5.7
通讯作者：
Z. Duan;Hang Xu;S. Gao;W. Geyi
中科院分区：
文献类型：
--
作者：
Z. Duan;Hang Xu;S. Gao;W. Geyi
本文介绍了第一份报告的圆极化（CP）全向辐射天线的无线胶囊内窥镜（WCE）系统的应用。所提出的天线采用了集成的设计理念，并实现了在0.915 GHz的工业，科学和医疗（ISM）频段（0.902-0.928 GHz）与$\pi \times 5.5^{2} \times 22 \text {mm}^{3}$紧凑的尺寸操作。在Ansys HFSS中进行仿真，天线放置在圆柱形均匀肌肉组织的中心，尺寸为$\pi \times 55^{2} \times 80\，\，\text {mm}^{3}$。仿真结果表明，该胶囊天线的阻抗带宽（BW）为0.82 ~ 0.99 GHz，在仰角方向上的CP带宽（AR θ）为49° ~ 144 °。强大的CP性能和集成的设计理念，使所提出的天线适用于先进的WCE系统。
This article presents the first report of a circularly polarized (CP) omnidirectional radiation antenna for wireless capsule endoscope (WCE) system applications. The proposed antenna incorporates an integrated design concept, and achieves operation at 0.915 GHz Industrial, Scientific, and Medical (ISM) band (0.902–0.928 GHz) with a compact size of $\pi \times 5.5^{2} \times 22 \text {mm}^{3}$ . The simulation is performed in Ansys HFSS, with the antenna being placed in the center of a cylindrical homogeneous muscle tissue with a size of $\pi \times 55^{2} \times 80\,\,\text {mm}^{3}$ . The simulated results show that the capsule antenna has an impedance bandwidth (BW) ( $\vert S_{11} \vert dB) from 0.82 to 0.99 GHz and a CP BW (AR $\theta $ range (49°–144°) in the elevation plane. The robust CP performance and the integrated design concept make the proposed antenna suitable for advanced WCE systems.