Antenna performance for localization of capsule endoscope

Recent developments in capsule endoscopy have highlighted the need for accurate techniques to estimate the location of a capsule endoscope in the gastrointestinal (GI) tract. Besides the channel propagation environment that can highly influence the accuracy of the capsule location estimation, the deployed antenna properties and its radiation pattern can also have a significant impact on the performance of the location estimation technique. Therefore, it is essential to select the antenna type that can meet the location estimation requirements. In this paper, the studies are done for two different antenna types: half-dipole and loop at the frequency of 2.4 GHz to explore and compare the effect of different antenna types. The results show that the half-dipole antenna outperforms the loop antenna in respect to the signal attenuation inside the human abdomen region. © 2014 IEEE