Satellites provide a challenging environment for electromagnetic components and antennas. The limited available space has to be shared by multiple tightly-clustered systems that have to operate correctly in extreme thermal conditions. Electromagnetic simulation plays a critical role in ensuring that mission-critical components work as intended once in orbit. This webinar will give an overview of how the range of simulation tools in CST STUDIO SUITE® can be used to design and optimize antennas and components quickly and with high accuracy.
Satellites typically use high-gain antennas with electrically large apertures. The design and integration of the antennas on satellites require careful analysis and optimization. Coexistence between antennas, and possible interference with other systems on the satellite, can cause EMC issues which should ideally be understood at an early phase in the design process.
The feed chain for antennas consists of multiple waveguide components including orthomode transducers (OMTs), waveguide transitions, and filters. Attendees will learn how the System Assembly and Modelling framework in CST STUDIO SUITE allows the designer to split the chain into its constituent components. These can then be optimized more efficiently individually, using the most appropriate solver technology, while still having the overall system performance as a goal.
Multipaction is an additional issue the presentation will address, and which can seriously affect high-power components in space. Charged particle simulation can be used in combination with full-wave 3D EM solvers in CST STUDIO SUITE to design components in such a way as to avoid this issue.
Attendees will also be shown how thermal considerations are important in antenna and component design. Thermal energy, both from the sun and from high-power components, can detune components and deform antennas. This can change the frequency performance of feed chains and the far-field radiating performance of antennas. The tightly integrated EM-thermal simulation capability allows these effects to be understood and compensated for early in the design process.
- Learn how electromagnetic and multiphysics simulation allows the behavior and installed performance of mission-critical components such as antennas and filters to be investigated long before construction and launch.
- Understand why the densely-packed structure of satellites means that interference between different systems is a critical consideration in the design process.
- Appreciate how the high-power components in satellites introduce additional potentially harmful effects, such as heating and multipaction, andhow these can be investigated by charged-particle and multiphysics simulation tools.
- Discover how to make simulation more efficient by splitting up complex systems into individual elements, which can be simulated and optimized separately using different solver types.
- Explore the System Assembly and Modeling framework in CST STUDIO SUITE, which allows numerous simulation tasks to be combined into a single project in order to allow the integrated design of satellites at both the component and system level.
Marc Rütschlin grew up and studied in Stellenbosch, South Africa. After completing his PhD in Electronic Engineering with a focus on dielectric material characterization, he did post-doctoral studies at NIST in Boulder, Colorado, and at the University of Karlsruhe in Germany, working on electromagnetic wave propagation in buildings, and small antenna design respectively. Marc joined CST in 2007, and currently works as CST's global market development manager for microwave and RF applications.