Khaleghi A, Balasingham I
Annu Int Conf IEEE Eng Med Biol Soc. 2015;2015:4081-4. doi: 10.1109/EMBC.2015.7319291.
Simulation of a wireless communication link for a capsule endoscopy is presented for monitoring of small intestine in humans. The realized communication link includes the transmitting capsule antenna, the outside body receiving antenna and the model of the human body. The capsule antenna is designed for operating at the frequency band of 600 MHz with an impedance bandwidth of 10 MHz and omnidirectional radiation pattern. The quality of the communication link is improved by using directive antenna outside body inside matching layer for electromagnetic wave tuning to the body. The outside body antenna has circular polarization that guaranteeing the communication link for different orientations of the capsule inside intestine. It is shown that the path loss for the capsule in 60 mm from the abdomen surface varies between 37-47 dB in relation to the antenna orientation. This link can establish high data rate wireless communications for capsule endoscopy.
本文提出了一种用于胶囊内窥镜的无线通信链路仿真，用于监测人体小肠。实现的通信链路包括发射胶囊天线、体外接收天线和人体模型。胶囊天线设计用于在600 MHz频段工作，阻抗带宽为10 MHz，具有全向辐射方向图。通过在体外使用定向天线并在匹配层内对电磁波进行调谐，以使其与人体匹配，从而提高了通信链路的质量。体外天线具有圆极化特性，可确保胶囊在肠道内不同方向时的通信链路。结果表明，距离腹部表面60 mm处的胶囊路径损耗随天线方向在37 - 47 dB之间变化。该链路可为胶囊内窥镜建立高数据速率的无线通信。
