Nonlinear Testbed Design

Software Defined Radio (SDR) can move the complicated signal processing and handling procedures involved in communications from radio equipment into computer software. Consequently, SDR equipment could consist of only a few chips connected to an antenna. Due it’s relative simplicity, we focus on adopting SDRs to testbed setups.

Electromagnetic Interference (EMI) and Electromagnetic Compatibility (EMC)

As there was a huge lack of knowledge in this field we decided to analyze EMC tools and evaluated methods to do pre-compliance measurements with low-cost equipment.

Measurement Filter Design

The Lattice Wave Digital Filter, which generates the required filter characteristic through a series of all-pass filters that can be designed in a way to minimize the group delay variation.


Moritz Tockner, Hans Georg Brachtendorf, Martin Steiger, Design of Wave Digital Filters with the TU Delft Toolbox,2021.

Stefan Jahn, Hans-Georg Brachtendorf, DDS with Noise Reduction by Multiplier-Less Filter Methods, 2021.

Kristyna Pijackova, Tomas Gotthans, Radio Modulation Classification Using DeepLearning Architectures, 2021.