Plextek RFI designs microwave PA for space

The module designed by Plextek RFI incorporates a power GaN output device and a GaAs driver circuit. It will form part of a propulsion system that is being supplied to an in-space transportation service company, and will be launched into space in 2019.

“The specification for this design project presented us with some significant challenges,” said Liam Devlin, CEO of Plextek RFI.

“The module design seeks to maximise the DC to RF conversion efficiency, and – as with all of our power amplifier designs – attention to detail was required to manage the thermal performance in a compact space. The different packaging technologies used for the driver amplifier and the output device also necessitated an innovative approach to the PCB design.”