Ma R, Feng Q. Broadband CPW-Fed Circularly Polarized Square Slot Antenna for Universal UHF RFID Handheld Reader. ACES Journal [Internet]. 2021 Nov. 4 [cited 2026 Apr. 22];36(06):747-54. Available from: https://journals.riverpublishers.com/index.php/ACES/article/view/12085