The Terahertz Sensing group at TU Delft conducts research in applied electromagnetics, antennas, optics, and sensors for space applications. To prevent unwanted reflections of these high-frequency signals, absorber materials are used.
While other absorber materials are typically specified up to a maximum of 60 GHz, ABS material has been verified and tested up to 220 GHz. This includes two series of broadband absorbers:
- ABS-SLF is a multi-layered, flat, lightweight carbon-loaded foam panel. Each layer is carefully engineered with a specific dielectric gradient to achieve optimal impedance matching with air.
- ABS-LCF is a series of lightweight, open-cell foam absorbers. It consists of a single layer of polyurethane foam coated with a dielectric carbon solution with flame-retardant properties. Thanks to its open-cell structure and specialized manufacturing process, this material can be applied to curved or rounded surfaces.
During testing, it was noted that the material performed within tolerance across the entire frequency range, exhibiting a linear and therefore predictable attenuation.
This material is ideally suited for applications in the microwave and millimeter-wave range, effectively damping and absorbing unwanted signals in radar systems, measurement setups, and specialized research applications.
The material is easy to process and can be supplied with an adhesive backing or an aluminum mounting layer.
