High-frequency systems

The High Frequency Systems working group is primarily concerned with the design and testing of high-frequency electrical assemblies. The frequency range covered extends from a few kHz to the three-digit GHz range.
The measurement options include the determination of S-parameters, measurement of intermodulation, noise and compression characteristics of RF assemblies in the frequency range from 10 kHz to 325 GHz.
State-of-the-art software tools enable the rapid, detailed design of assemblies, resulting in high success rates right from the first prototypes.

Through close cooperation with the Institute of Packaging Technology and regional companies, almost all prototypes can be built and put into operation in a timely manner.
Special expertise lies in the design of RF front-ends in the entire frequency range mentioned above and the development of software-defined radio systems.
Current work is concerned with computer-aided and analytically designed phase shifters and vector modulators for use in electronically steerable antennas. Furthermore, imaging radar systems, adaptive phased array antennas for satellite communication and autonomous software-defined radio systems for use in small satellites are being developed. Radar systems are mainly developed in CW, FMCW and quadrature modulated versions.
In cooperation with the microwave photonics working group, research is actively being carried out on the next generation of radio-over-fiber systems. Initial demonstrations with ultra-broadband prototypes have already been carried out.