Two new compact power amplifier platforms support basic and ‘smart’ microwave GaN HPA

Diamond Microwave has announced the streamlining of its range of compact microwave GaN-based pulsed solid-state power amplifiers (SSPA) onto two common platforms, along with the introduction of new X-band 400W and 900W ‘smart’ PA models. The flagship DM-X400-02 is a smart X-band SSPA that offers power levels in excess of 400W over a 1600MHz bandwidth – and approaching 500W over 750MHz – with pulse widths up to 100µs and duty cycles up to 15%. Built on the same platform as this amplifier are the new 200W model (DM-X200-01) and the DM-X1k0-01 GaN PA, which comprises two DM-X400-02 models combined externally with a low-loss combiner to provide in excess of 900W across a 5% bandwidth. The 900W model is an assembly that can be provided in two alternative form factors – either with the amplifiers arranged edge-to-edge or with a common heatsink sandwiched between the pair. Each amplifier is phase matched to optimise the power combining. An N-type output connector is fitted as standard, but waveguide can be offered as an option. “The introduction of these two common platforms featuring standardised mechanical and electrical interfaces means that we can even more readily customise designs to meet individual requirements,” said Richard Lang, managing director of Diamond Microwave. “We believe that these amplifiers still offer among the highest power-to-volume ratios in the industry for such products with such features and specifications. They are particularly suited for providing a solid-state alternative to vacuum tube technology in radar and other demanding defence and aerospace applications.”