12 Mar '18, 12am

#BackToTheFuture: Discover the disruptive trends in the #Space market. Read our white paper here:

With new architectures, things changed for many reasons: first the allocated bandwidth is increasing in HTS satellites, or is split in sub-bands spread over 2.5GHz or even 2.9GHz in Ka-band. Second, amplifiers are working in multicarrier mode and the instantaneous bandwidth must be large. This constraint is increased further when new architectures such as multiport amplifiers or phased arrays are used. Today, TWTAs are designed to be capable of handling the full bandwidth (2GHz in Ku-band, 2.9GHz in Ka-band). Efficiency is the most stringent requirement that power amplifiers must comply with. It is easy to understand why, as roughly 80% of the regular payload DC power is allocated to power amplifiers (this percentage is less when a digital processor is embarked, but the consequence is to put more pressure on electrical efficiency). One has to keep in mind that improving ef...

Full article: https://www.thalesgroup.com/en/worldwide/space/news/futur...

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