PERUN Rocket: Flight Results of Space-Grade DRO Generator
The third test flight of the Polish suborbital rocket PERUN from the Central Air Force Training Range in Ustka marked an important step in the development of national space technologies. The mission carried, among others, scientific experiments and technological payloads, including prototypes of microwave frequency generators based on dielectric resonator oscillators (DRO) developed by SpaceForest.
Passive Payload – Real Testing in Extreme Conditions
DRO generator was flown onboard PERUN as a passive payload. After recovery, it underwent full electrical verification which confirmed the results of previous rigorous laboratory testing. The measurements demonstrate that the device operates in accordance with its design assumptions:
- Output power: 12.55 dBm (requirement >10 dBm)
- Frequency: 14.33228 GHz – compliant with the target value of 14.333333 GHz after accounting for frequency increase in vacuum
- Phase noise: −89.6 dBc/Hz at 10 kHz offset (requirement: −80 dBc/Hz)
- Signal spectrum: no spurious signals observed, confirming correct generator operation
The results confirm the device’s readiness for operation under extreme launch and suborbital flight conditions, as well as the high reliability of technologies developed in Poland.
The conducted test formally confirms that the generator is fully prepared for operation in extreme suborbital environments and is suitable for use in radiometric instruments and communication systems where the highest reliability and signal stability are required.
DRO – Ultra-Stable Microwave Generator in a Compact Form
The core of the device is a dielectric resonator oscillator (DRO) which generates a highly stable signal with very low phase noise without the need for an external reference source.
As a result, the system architecture is simpler and more reliable, and a signal in the 14–15 GHz range is generated directly without frequency multiplication stages, minimising noise. In line with the New Space approach, the design leverages carefully selected COTS and automotive-grade components, including radiation-tolerant elements, enables reliable operation in the extreme space environment.
PERUN – Polish Reusable Suborbital Rocket
PERUN rocket, developed by SpaceForest in cooperation with ESA and POLSA, enables testing of new technologies under real launch and suborbital flight conditions. The recent third flight in Ustka, conducted under the Boost! programme, enabled, among others, validation of critical rocket systems, testing of research and commercial payload integration, and observation of device and material behaviour under extreme physical conditions.
Invitation to Collaborate
Preparations are currently underway for further suborbital test flights in Poland, Portugal (Atlantic Spaceport Consortium – ASC), and Denmark (EuroSpaceport). Universities, research institutions, companies, and start-ups are invited to submit proposals for scientific experiments, technology demonstrators, and educational projects for upcoming missions.
The call for new experiments is now open – become a mission partner!
Limited Mission Patches in our store
Official PERUN mission patches were also flown onboard the rocket. A limited-edition series with certificates confirming participation in the flight is now available in our shop.
SpaceForest Technologies – From Rockets to Satellite Systems
SpaceForest activities extend beyond PERUN rocket. The company develops advanced space and microwave electronics, including:
- Low phase noise generators (DRO, PLDRO)
- Power amplifiers and microwave filters including AI-tuned FTS
- RF systems for space applications
- Tracking, telemetry and communication subsystems (e.g. RASEL)
- Radar technologies supporting space observation and monitoring, including the BiRaKos system for tracking satellites and space debris in low Earth orbit
These products are used in satellite communication, radar, and defence systems, and are all developed in Poland in compliance with the highest space quality standards (ECSS).