D. Nguyen-Khanh, D. Nguyen-Tien, N. Tran, T. Nguyen-Dinh, N. Hussain, and H. Tran-Huy, “A Compact High-Gain Dual-Circularly Polarized Antenna Based on High-Order Mode Microstrip Patch: Compact High-Gain Dual-CP Antenna”, IEEE LAT AM T, vol. 24, no. 4, pp. 395–401, Mar. 2026.