Wang, Z.-Z., N.-W. Liu, and L. Fang. “Low-Profile Dual-Polarized Filtering Antenna With Improved Gain and Impedance Bandwidth Using Characteristic Mode Analysis”. Applied Computational Electromagnetics Society Journal (ACES), vol. 38, no. 10, Oct. 2023, pp. 767-73, doi:10.13052/2023.ACES.J.381003.