Pinwheel-Shaped Polarizer for Generating Dual-Circularly Polarized Conical Radiation Patterns in the Ka-band - Melendro-Jimenez, J; Sanchez-Olivares, P; Tamayo-Dominguez, A; Garcia-Martinez, S; Masa-Campos, JL (18th European Conference On Antennas And Propagation, Eucap 2024, 2024)