In this paper, a conformal wideband fractal implemented miniaturized antenna is presented for endoscopy capsule application over the 2450 MHz Industrial, Scientific and Medical (ISM) band. The thickness of the antenna is only 0.1 mm, which can be wrapped outside the capsule’s wall. By implementing Minkowski fractal geometry in the patch, the proposed antenna obtains significant size reduction. A cubical shape muscle phantom is considered for initial design with parametric studies. To realize a more practical scenario, effect of the internal electronic components inside the capsule is discussed in detail, and also the variation of antenna’s characteristics with respect to movement of capsule inside the gastro-intestinal (GI) tract has also been outlined. Further to study the bio-compatibility, specific absorption rate (SAR) of the proposed antenna is evaluated in different organs. The performance of the proposed antenna is experimentally validated by using a human phantom liquid mimicking the muscle tissue. From experimentation, it can be concluded that the antenna offers more than 30.6% fractional bandwidth in homogeneous tissue. Theoretically, the whole antenna assembly is electrically modeled and corresponding link budget calculation is accomplished. Link margin coming out from this study indicates the suitability of the proposed antenna in bio-medical applications.

在本文中，提出了一种适用于2450 MHz工业，科学和医学（ISM）频段内窥镜胶囊应用的保形宽带分形实施小型天线。天线的厚度仅为0.1毫米，可以包裹在胶囊壁的外面。通过在贴片中实现Minkowski分形几何形状，所提出的天线可显着减小尺寸。对于参数设计的初步设计，可以考虑使用立方体肌肉体模。为了实现更实际的情况，详细讨论了胶囊内部的内部电子组件的作用，并且还概述了天线特性相对于胶囊在胃肠道内的运动的变化。为了进一步研究生物相容性，建议的天线的特定吸收率（SAR）在不同器官中进行评估。拟议天线的性能通过使用模拟人体肌肉组织的人体模型液体在实验上得到验证。从实验中可以得出结论，该天线在均质组织中提供了超过30.6％的分数带宽。理论上，对整个天线组件进行电建模，并完成相应的链路预算计算。这项研究得出的链路余量表明了拟议天线在生物医学应用中的适用性。均匀组织中的6％带宽比例。理论上，对整个天线组件进行电建模，并完成相应的链路预算计算。这项研究得出的链路余量表明了拟议天线在生物医学应用中的适用性。均匀组织中的6％带宽比例。理论上，对整个天线组件进行电建模，并完成相应的链路预算计算。这项研究得出的链路余量表明了拟议天线在生物医学应用中的适用性。