Dual Band Dual-Circulary Polarized Transmit-array Antenna for SoTM Ground Terminals at Ka-band - Matos, S.; Costa, J. R.; João M. Felício; A. Almeida; Fonseca, N. J. G.; Parinaz Naseri; Fernandes, C. A. (2020 IEEE International Workshop on Antenna Technology (iWAT 2020), 2020)