Achieving a functional antenna for mobile SATCOM terminals in Ka band is probably one of the most challenging tasks in current antenna engineering. Even more if this terminal has to exhibit a low profile and be "affordable". This quest is involving many companies in the field. Our contribution represents one of such efforts. The antenna is based on slotted waveguide array technology to maximize efficiency and it features a number of novel solutions, going from its robust polarization switching mechanism, to the use of a thin wideband polarizer and the utilization of groove gap waveguides. This paper reports the measured data of a fully functional prototype to validate its novel contributions.

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