EL-gamal E, H. Hussein A, A. Attia M, E. Abd El-Samie F. UWB Reflectarray Antenna for Chipless RFID Reader Gain Enhancement. ASRJETS-Journal. 2019;59(1):215-229. Accessed September 17, 2025. https://asrjetsjournal.org/American_Scientific_Journal/article/view/5090