Yu-Jia Chen received the B.S. degree and Ph.D. degree in electrical engineering from National Chiao Tung University, Taiwan, in 2010 and 2015, respectively. From 2015 to 2018, he was a postdoctoral research fellow with National Chiao Tung University, Taiwan. From Nov. 2018 to Jan. 2019, he was a visiting scholar with the John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA. In 2019, he joined National Central University, Taiwan, where he is currently an associate professor in the department of communication engineering. His research interests include non-terrestrial networks, wireless sensing and localization, and IoT security.