EMC testing without the need for ferrite tiles.
Broadband / Closed-cell polystyrene / 80MHz to 40GHz range
Building a semi-anechoic chamber for MIL-STD461 EMC testing applications is usually quite an expensive proposition. The investment cost is often driven by the hybrid (cascade) design of the anechoic chambers, making use of a ferrite tile base layer with a hybrid EMC absorber on top.
Ferrite tiles are expensive and often needed to meet the required absorber reflectivity requirements at low frequencies, described in the EMC standard MIL-STD461.
Not so with the DMAS MIL-STD461 absorber (MT50). This polystyrene absorber offers the enormous benefit of meeting absorption (reflectivity) requirements part of MIL-STD461 guidelines, even when no ferrite tile base is utilized.
This means that not only does this DMAS RF absorber offer the usual advantages of closed-cell polystyrene when it comes to its durability and clean room compatibility, it is also much cheaper to use and trivially easy to install due to the absence of ferrite tiles and adhesives. EM absorbers from DMAS are installed using of mounting strips and screws, simple as that.
Thanks to next-gen material properties, DMAS MIL-STD461 absorbers (MT50) are long lasting, fire retardant and resistant to changes in humidity. They are also REACH and RoHS compliant since these characteristics are achieved without relying on potentially hazardous materials during fabrication. In addition, the modular design makes it easy to replace a damaged taper without having to throw out an entire absorber. If you are looking for the most sustainable option, choose DMAS polystyrene absorbers.
The incredible durability and closed-cell nature are compelling reasons to choose DMAS RF absorbers, but the MT50 absorber offers additional benefits. It meets MIL461 reflectivity loss requirements without the need for ferrite tiles, making it significantly cheaper and easier to install than traditional hybrid absorber solutions.
The MT50 absorber can be equipped with a lightweight end cap. These end caps serve to protect the taper against small forms of damage. They are available in a white and grey finish. As an added benefit, the white end caps also enhance light levels within the anechoic chamber, making it easier for engineers to work.
In addition to a great product, we provide the advice you need to achieve the best results. Feel free to turn to us for expert technical advice. Questions are answered within 24 hours.
DMAS offers three unique absorber configurations for hybrid anechoic chamber solutions, check out our brochures for more details.
The HT45 absorber total height is 450mm (18″). Excellent performance in Semi and Full Anechoic chamber solutions for EMC testing.
The modular design approach of DMAS absorbers consists of baseplates and wedge tapers. The baseplate thickness is 50mm or 100mm, depending on the absorber model.
The HT25 absorber total height is 250mm (10″). Perfect for hybrid solutions using a matching ferrite tile within EMC testing facilities.
Each Hybrid EMC absorber can be equipped with two white end caps to improve the illumination within the anechoic chamber and for additional protection.
The HT65 absorber total height is 650mm (26″). Made for high-end hybrid anechoic chamber solutions for EMC testing applications.
Looking for the very best in microwave absorber technology? DMAS absorbers are designed for modern EMC testing facilities and represent the latest in sustainability & performance. Contact us today to get started.