ARQUIMIA has developed the thermal systems for the active antennas of the SpainSat NG satellites, using advanced Heat Pipes and Loop heat Pipes to ensure an optimal performance. Furthermore, more than four thousand microchips have been produced and qualified to withstand extreme radiation and temperature conditions, which are crucial for the control and telemetry of the antennas. All testing and production of these systems have been done in-house, leveraging the extensive experience of its professionals.