Feng, Yang, Pan Chen, Shaopeng Pan, and Gaosheng Li. 2021. “Ultra-Wideband Flexible Implantable Antenna for Wireless Capsule Endoscopy System With Performance Improvement”. The Applied Computational Electromagnetics Society Journal (ACES) 36 (06):755-61. https://journals.riverpublishers.com/index.php/ACES/article/view/12087.