EMC testing without the need for ferrite tiles.
Broadband / Closed-cell polystyrene / 80MHz to 40GHz range
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 polystyrene absorbers are designed and manufactured in The Netherlands to ensure the highest levels of quality.
DMAS enjoys a close collaboration with Comtest Engineering, one of the foremost suppliers of anechoic chamber solutions. Together, we have over 45 years of experience in the field.
The HT25 absorber is typically used in CISPR25 or MIL-STD461 (EMC) test chambers. Perfectly tuned for use in semi anechoic chambers, DMAS Hybrid EMC Absorbers are all specifically matched for use in combination with compatible ferrite tiles.
DMAS Hybrid Absorber models are broadband, closed-cell carbon loaded polystyrene absorbers and are specifically tuned for perfect performance in semi- and full anechoic chambers using a matching ferrite tile.
DMAS Hybrid Absorbers are carbon loaded polystyrene absorbers and are specifically tuned for perfect performance in semi- and full anechoic chambers. The fact polystyrene is a closed-cell material provides great advantages over traditional polyfoam alternatives.
This polystyrene absorber offers the enormous benefit of meeting reflectivity requirements part of MIL-STD461 guidelines, even when no ferrite tile base is utilized. This means a great cost reduction can be achieved using the MT50 absorber.
Each Hybrid EMC Absorber can be equipped with two protective end caps. White end caps are 600 x 600mm and help to improve illumination within anechoic chambers. DMAS end caps are available in colors grey and white.
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.
Closed-cell polystyrene material (no leakage of carbon particles)
Uniform carbon cell loading resulting in stable performance
Modular baseplate & taper design (damaged tapers are easily replaced)
Straightforward installation using screws and mounting strips (no glue)
Lightweight product with superior tensile strength (no drooping tips)
Resistant to humidity (does not absorb moisture from the air)
Environmentally friendly: REACH & RoHS compliant
Certified for use in clean rooms
Fire retardancy: ISO 11925-2 Class E / DIN 4102 class B2 / UL94 HBF
Total absorber dimension: 1200 by 600 by 500mm (LxWxH)
Meets MIL-STD461 reflectivity requirement [-6 dB at 80 MHz / -10dB at ≥250MHz]
Cost effective since no ferrite tiles are required
Can be equipped with a white end cap to protect tapers and increase chamber illumination
A product life expectancy upwards of 25 years
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.
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.
Dutch Microwave Absorber Solutions bv
Hoge Rijndijk 205
2382AL, Zoeterwoude
The Netherlands
+31 (0)71 542 1880
© 2024 | Dutch Microwave Absorber Solutions bv
Hoge Rijndijk 205
2382AL, Zoeterwoude
The Netherlands
+31 (0)71 542 1880
info@dmas.eu
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