Proba-V's X-band transmitter

ESA's Proba-V mission will image the entire Earth daily, producing a large amount of multispectral data. To get it down to the ground, the satellite will be equipped with a compact highly efficient X-band transmitter, along with onboard storage capacity and data compression techniques. This transmitter will include a redundant gallium nitride transmitter, the first use of European-sourced GaN in orbit.

“Among the GREAT2 prototype designs is an X-band integrated circuit design. We proposed that we could, with various refinements, add an extra X-band transmitter incorporating a GaN amplifier