Introduction
HYFRAL HY is a high-performance electromagnetic absorber designed for EMC applications, combining SIEPEL FE30Z ferrite tiles and pyramidal absorbers to achieve broadband reflectivity from 30 MHz to 40 GHz. These absorbers are used in EMC anechoic chambers for EMI and EMS testing according to commercial and military standards.

Specifications
The absorbers guarantee reflectivity performances across a wide frequency range, with specific dB values provided for frequencies from 30 MHz to 40 GHz. The absorbers are available in various types, each with different heights and reflectivity characteristics.

Design and Installation
The absorbers feature impedance matching between ferrite tiles and pyramidal absorbers, ensuring transparency to low-frequency waves. The absorbers are impregnated with a specially formulated carbon solution for enhanced performance. Installation is flexible, allowing for upgrades to existing shielded rooms using a unique rail system.

Material and Construction
The absorbers are made from high-tech polyurethane foam with 90% open-cell structure, allowing for better carbon impregnation. The absorbers are coated with a unique plastic paint that enhances durability and fire retardant properties.

Performance and Testing
Reflectivity performances are guaranteed for 20 years, with testing conducted using advanced equipment. The absorbers can handle power densities up to 2 KW/m² and comply with various fire safety standards, including ISO 11925-2 Euroclass E and DIN 4102 – B2.

Conclusion
HYFRAL HY absorbers offer a reliable solution for EMC testing environments, providing long-term performance and compliance with international standards. Their innovative design and material properties make them suitable for heavy-duty applications.