One chip for multiple space missions: how new European technology could change satellites
A small black chip on a test board, surrounded by golden connectors, does not at first glance look like a technology that could affect the future of satellites. Yet it is precisely such circuits that often determine how powerful, adaptable and energy-efficient spacecraft in orbit will be. At the heart of the new European development is a multichannel transceiver, that is, a transceiver, which can directly convert broadband radio-frequency signals into digital data and vice versa. According to the European Space Agency, it is an important building block for a new generation of satellites that can carry communications, navigation or Earth observation payloads.
Such technology is especially important at a time when the space sector is moving ever more strongly from analogue to digital systems. ESA has been warning for years that satellites are no longer just platforms that transmit a signal according to a predetermined scheme, but are increasingly becoming digital processing nodes capable of managing a greater number of channels, higher throughputs and more complex tasks. In that context, the new integrated chip is not merely another electronic component, but part of a broader technological shift towards more flexible and software-controlled space systems.
What exactly is a transceiver and why is it important
In radio electronics, a transceiver is a device that combines a transmitter and a receiver in a single unit. This means that the same circuit can send and receive a signal, that is, enable two-way communication or simultaneous transmission and reception, depending on the architecture of the system. In the satellite world, this function is crucial because almost every space system has to communicate with something outside itself: with ground stations, other satellites, user terminals or sensors that collect data about the Earth and the surrounding space.
In the description of its radio-frequency laboratories, ESA states that satellites, regardless of the mission, must perform one of several fundamental tasks: receive commands, transmit telecommunications, carry out remote sensing or deliver precise navigation and timing data. Therefore, the development of radio-frequency components is not reduced only to increasing speed or miniaturisation. It is equally important that the system be stable, reliable and sufficiently adaptable to respond to different types of payloads and operational scenarios.
According to the description in the presented material, the new IMST circuit goes precisely in that direction. Jan Steinkamp, a radio-frequency engineer at the German company IMST, points out that the transceiver supports a wide range of radio frequencies, enabling a high degree of programmability and reconfigurability during operation. The practical consequence of this is clear: instead of a larger number of separate components, different functions can be combined into a single chip. This simplifies the hardware architecture and at the same time reduces electric power consumption, while mass, volume and consumption are among the strictest constraints of every space mission.
Separate modules or one integrated circuit
When multiple functions are moved onto one chip, the gain is not only in saving space. ESA’s Microelectronics Section states that one of its basic tasks is to develop microsystems that enable partial or complete system integration on a single chip, with miniaturisation, low consumption, high operating speed, testability and reliability. In other words, the European space sector has for quite some time not been looking only for “more powerful” components, but for more intelligently designed electronic blocks that can reduce the complexity of the entire system.
In practice, this means fewer interconnections between separate modules, fewer losses in the signal, simpler assembly and potentially a lower risk of failure at system level. This is especially important for satellites in large constellations, where even a small saving per unit can make a big difference when multiplied by dozens or hundreds of spacecraft. In such programmes, what is decisive is not only the top performance of one satellite, but the possibility of serial production of reliable and energy-efficient subsystems.
On its official website, IMST also emphasises that it works on highly integrated systems on chip, including radio-frequency, mixed-signal and digital circuits, and that for the space sector it develops highly reliable and more radiation-tolerant ASIC components according to the ESA ESCC standard. Such a framework matters because space electronics do not operate in conditions similar to terrestrial consumer electronics. In orbit there is no simple servicing or replacement of parts, and exposure to radiation, temperature differences and long-term operation requires a different approach to the design and qualification of components.
Demonstration at ESTEC, ESA’s technical centre
The prototype of the new product was presented in the Microwave Laboratory within ESTEC, ESA’s largest centre in Noordwijk in the Netherlands. ESA states for ESTEC that it is its technical heart, the place where a large part of European space projects is created and matures. Development, testing and management of technologies for telecommunications, navigation, Earth observation, science and other space programmes are brought together there.
The Microwave Laboratory, where the prototype was demonstrated, is not just a demonstration space but a set of specialised facilities for radio-frequency testing, precise time and frequency, GNSS payload testing and general microwave measurements up to very high frequencies. ESA states that the laboratory is equipped with modern measurement systems and clean rooms and that it provides support to both ESA and external partners through testing, analyses, RF equipment characterisation, research and prototyping. The very fact that the prototype was shown in such an environment indicates that the development is being viewed in the context of serious technical evaluation, and not just as a laboratory concept without application.
For European industry, the symbolic aspect is also important. When a new integrated radio-frequency circuit is validated within ESA’s laboratories, it sends the message that Europe is seeking to build its own capabilities in an area that is crucial for future satellite systems. At a time when supply chains for semiconductors and highly specialised components are the subject of growing geopolitical and industrial interest, the development of domestic IP blocks and manufacturing capacities has a significance that goes beyond a single component.
Why ESA emphasises European intellectual capital
Václav Valenta, ESA microwave systems engineer, assesses that IMST’s highly integrated circuit represents yet another critical European intellectual property block developed in one of Europe’s deep-submicron technology nodes. That wording is not accidental. In its microelectronics documents, ESA emphasises that one of the main goals is to ensure the availability of key components, suitable production processes and reliable design methodologies for space applications. In doing so, special attention is paid to exploring how commercial deep-submicron technologies can be adapted to space, including addressing the issue of radiation tolerance.
Even earlier, ESA warned that the shift from analogue to digital telecommunications satellites is a strong driver for the development of more advanced integrated circuits. In such a transition, satellites become “smarter”, capable of processing larger quantities of data and using the limited radio-frequency spectrum more efficiently. In that sense, the development of new European chips is not an isolated research effort, but a response to market and operational pressure for satellites to be more adaptable, more efficient and more cost-effective in the long term.
The emphasis on European intellectual property also has a broader industrial background. When key functional blocks are created within the European development chain, there is a greater possibility that Europe will retain control over the design, qualification and future upgrades of such components. This is important not only for commercial satellites, but also for programmes in which security of supply, strategic autonomy and long-term access to technology are of particular importance.
Software-defined radio and digital beamforming
Valenta explicitly states that the new circuit is suitable for a wide range of applications, including software-defined radios and digital beamforming. These two technologies are often mentioned as the heart of modern satellite constellations. In software-defined radio, a larger part of the functionality, which used to be “locked” in hardware, is transferred to digital processing and software. This makes the system more adaptable, easier to reconfigure and simpler to upgrade in order to respond to different frequency bands, protocols or operational needs.
In the description of the reconfigurable digital beamforming network, ESA states that progress in digital signal processing and in high-throughput and fast analogue-to-digital and digital-to-analogue converters is increasingly moving processing from classical analogue circuits into the more flexible digital domain. Beamforming networks make it possible to create multiple simultaneous beams, and this in turn opens the way to frequency reuse and increasing the number of channels through which data are transmitted. Put more simply, the satellite can direct capacity more precisely where it is needed, instead of distributing the signal rigidly and in a predetermined way.
This is especially important for constellations in low orbit, but also for advanced geostationary systems that need to adapt coverage to changes in demand, traffic peaks or specific user zones. In addition, the digital approach can help reduce the number of components, which is one of the goals ESA also cites in its own patents and research projects related to reconfigurable radio-frequency networks.
Communications, Earth observation and navigation on the same technological basis
It is interesting that the value of such a chip is not exhausted in a single type of satellite. The initial description explicitly states that it can support spacecraft with a digital communications payload, an Earth observation payload or a navigation payload. This is an important characteristic because it shows that the fundamental radio-frequency and digital functions are becoming increasingly standardised at the architecture level, while the final purpose is determined by the system configuration, software and the rest of the instrumentation.
For communications satellites, this means greater agility in managing throughput and frequencies. For Earth observation, what matters is the ability to process radio-frequency signals precisely in missions that rely on radars, radiometers or other sensors operating in the radio-frequency domain. In navigation systems, stability, signal quality and the ability to work with complex payloads for precise time and frequency are crucial. ESA laboratories cite precisely these domains as fundamental areas of work, which further confirms why the development of a chip like this is viewed as a multiply usable infrastructural step, and not merely as a solution for a single product.
In industrial terms, this opens room for a more modular approach to designing future satellites. Instead of each programme developing completely separate radio-frequency chains, part of the key functionality could be built on common, highly integrated blocks. This shortens the development cycle, facilitates qualification and creates the conditions for faster introduction of new services and configurations into orbit.
Lower consumption, less hardware, greater adaptability
The seemingly technical claim that the chip reduces hardware complexity and energy consumption actually summarises almost everything the space industry today seeks from new electronics. Satellites are simultaneously under pressure to be lighter, cheaper to manufacture, faster to launch and richer in functionality. Under such conditions, every subsystem that combines multiple functions, occupies less space and consumes less energy directly increases the room for manoeuvre for the designers of the entire platform.
Lower consumption does not mean only savings in the energy budget. It also affects thermal design, power supply sizing, component layout and overall reliability. The same applies to reducing the number of separate hardware blocks: fewer connections, fewer conversions between modules and fewer physical interfaces often also mean simpler integration, easier verification and greater system resilience to operational problems.
That is precisely why the development of chips like this should be viewed beyond the framework of a single laboratory demonstration. According to available information from ESA and IMST, this is a technology that fits into a long-term European effort to bring together microelectronics, radio-frequency design, software adaptability and a high degree of reliability for space conditions in one place. If such building blocks prove successful in the further phases of development and qualification, they could become part of the standard equipment of satellites that in the coming years will carry increasingly demanding communications, navigation and observation missions.
Sources:- - European Space Agency (ESA) – description of ESTEC as ESA’s technical centre and the location in Noordwijk: link
- - ESA Microwave Laboratory – official description of the laboratory, equipment and RF testing at ESTEC: link
- - ESA Radio Frequency Systems, Payload and Technology Laboratories – overview of the role of RF laboratories for telecommunications, navigation and remote sensing: link
- - ESA Microelectronics Section – official description of the goals of system-on-chip integration, miniaturisation and the development of space microelectronics: link
- - ESA – Deep sub-micron technology to deliver smarter satellites – background on the transition from analogue to digital satellites and the importance of advanced integrated circuits: link
- - ESA – Reconfigurable Digital Beamforming Network – explanation of digital beamforming, multiple beams and more flexible digital processing: link
- - IMST GmbH – overview of the company’s activities in satellite communications, radio systems and chip design: link
- - IMST GmbH Integrated Circuits – official description of highly integrated systems on chip and space ASIC solutions according to the ESA ESCC standard: link
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