ABSTRACT Research interest in ingestible Wireless Capsule Endoscopy (WCE) studies in humans showed better results than conventional invasive probe endoscopy methods. Because of the structure and the position of the small intestine, proper scanning cannot be done in the area using traditional endoscopic methods. For patient comfort, continuous developments have been suggested in capsule endoscopy designs in terms of the quality of images transmitted, capsule orientation, positioning of the capsule from outside the body, link budget analysis, impedance matching and capsule miniaturization. To improve the image quality, transmission efficiency of the antenna has to be improved. This has led to the development of many antenna structures in an ingestible capsule system. Literatures have identified Med Radio and ISM (Industrial, Scientific and Medical) band as operation bands for the WCE systems. This review aims to highlight: (1) design considerations for various antenna types, (2) miniaturization techniques, (3) operating bands, specifications and various design challenges and (4) research gap, advanced design technologies and targets of ingestible antenna system. The main aim of this paper is to tutorial the up-to-date information on the recent antenna designing techniques and challenges for ingestible system.

中文翻译：

---

可摄取应用天线设计的最新评论

摘要 人体可摄入无线胶囊内窥镜 (WCE) 研究的研究兴趣显示出比传统侵入性探针内窥镜方法更好的结果。由于小肠的结构和位置，使用传统的内窥镜方法无法在该区域进行适当的扫描。为了患者的舒适度，建议在胶囊内窥镜设计中在传输图像质量、胶囊定向、胶囊从体外定位、链路预算分析、阻抗匹配和胶囊小型化方面进行持续发展。为了提高图像质量，必须提高天线的传输效率。这导致在可摄取胶囊系统中开发了许多天线结构。文献已经确定了 Med Radio 和 ISM（工业、科学和医学）频段作为 WCE 系统的操作频段。本综述旨在强调：(1) 各种天线类型的设计考虑因素，(2) 小型化技术，(3) 工作频段、规范和各种设计挑战，以及 (4) 可摄取天线系统的研究差距、先进设计技术和目标。本文的主要目的是指导有关最近天线设计技术和可摄取系统挑战的最新信息。