Yang, T.-L., X. Zhang, Q.-S. Wu, and T. Yuan. “Miniaturized Wideband Circularly Polarized Triangular Patch Antennas Based on Characteristic Mode Analysis”. Applied Computational Electromagnetics Society Journal (ACES), vol. 38, no. 10, Oct. 2023, pp. 783-91, doi:10.13052/2023.ACES.J.381005.