Reliable energy absorption is essential in high-power radar applications. Conventional polymer foam absorbers can thermally degrade at high power densities, resulting in performance loss and safety risks. To address this, ABS Technics has developed the ceramic absorption material ABS-FGA, specifically designed for stable operation under increased thermal load.
The material consists of a lightweight, inorganic, and non-combustible ceramic foam with a conical cell structure. The internal surfaces are provided with a dielectrically charged coating. The combination of geometric tapering and material properties ensures a gradual impedance transition, minimal surface reflection, and efficient dissipation of electromagnetic energy into heat.
ABS-FGA offers broadband impedance matching in the frequency range of 2 to 18 GHz. The material can be used at power densities up to 2.5 W/cm² and retains its mechanical and electromagnetic properties up to 125 °C.
The absorber blocks have a modular design and are easy to integrate into absorbing walls or radar and RF test setups, where thermal stability and reproducible measurement conditions are crucial.