The holding company "Russian Space Systems" (RKS, part of the Roscosmos State Corporation) announced a significant increase in the production of solid-state power amplifiers (SSPAs) for spacecraft. At the end of 2024, the production of these devices more than doubled. RKS developments are based on the Russian component base and are designed for communication, navigation and Earth remote sensing (ERS) satellites.
Solid-state power amplifiers from RKS have a number of key characteristics:
- Wide frequency range – operation in L-, S-, C- and X-bands, which allows them to be used in various space systems.
- Long service life – up to 15 years, which is critical for satellites operating in orbit.
- High efficiency – output power exceeds 100 W with an efficiency of 60%, which reduces energy consumption and increases the reliability of equipment.
The power amplifier includes a preamplifier, a signal correction device, a power supply and a traveling wave tube (TWT). A TWT is a vacuum tube device in which the interaction of a traveling electromagnetic wave and an electron beam is used to generate and amplify ultra-high frequency electromagnetic oscillations.
The function of the amplifier is to amplify the signal received by the spacecraft from transmitting ground stations and transmit it to other stations that are part of the same space system. The equipment is installed in the target equipment of satellites to provide digital broadcasting, Internet access, fixed and mobile communications.
These amplifiers will be part of the on-board equipment of advanced spacecraft, including satellites under the new national space project, as well as the Express and Yamal series of spacecraft.
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