Canjie Chen, and Quanyuan Feng. “A Compact Broadband Circularly Polarized Slot Antenna for Universal UHF RFID Reader and GPS”. Applied Computational Electromagnetics Society Journal (ACES) 36, no. 05 (July 16, 2021): 589–595. Accessed April 22, 2026. https://journals.riverpublishers.com/index.php/ACES/article/view/8821.