RF absorbers manufactured by DMAS offer outstanding performance as well as exceptional durability due to the use of polystyrene (EPS) material. Our absorbers have a modular design concept consisting of a baseplate and pyramidal shaped cones. The absorber is then installed to chamber walls using mounting profiles and bolts.
In general, our RF absorbers are divided into two product categories, hybrid and microwave absorbers. Tuned for use in semi & full anechoic chamber solutions designed for electromagnetic compatibility testing applications, DMAS hybrid EMC absorbers have pushed the industry forward by using EPS material on top of a ferrite tile base layer.
The second major product category is the DMAS Microwave absorber. Over the last three years, our RF absorbers for use in antenna measurement applications have greatly improved due to changes in raw material an enhanced design that changes its shape from a taper to an almost perfect pyramidal absorber. This leads to significantly increased performance, comparable to traditional foam solutions without compromising eco-friendliness or rigidity. Read more about EPS vs foam in this blog post.
We also offer a high-end walkway absorber with reinforced fiberglass epoxy grid panels for easy access to equipment under test in facilities where the floor is otherwise permanently covered in RF absorbers.
This 5-inch (13cm) absorber is specifically designed for smaller wireless antenna test setups, like OTA boxes or cabinets. The operating frequency is 2GHz up to 110GHz.
With a total height of 12-inch (30cm) this microwave absorber’ reflectivity performance is outstanding. Among other USP’s, DMAS absorbers are made of expanded polystyrene (EPS) and come with great benefits over traditional foams.
Introducing the MT45-JT (18”) absorber: a long-lasting, javelin-tipped, polystyrene absorber. Among other USP’s, DMAS absorbers are humidity resistant and made of closed-cell material. This provides great benefits over traditional foam materials, such as no leakage of carbon particles.
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.
The tallest DMAS absorber is the MT65-JT. This 26-inch absorber is designed for measurements at very low frequencies. Its operating frequency starts at 200MHz. Among other USP’s, DMAS absorbers are lightweight and easy to install. (Adhesive-free installations)
Need quick access to your antenna or Device Under Test (DUT)? Tired of getting first the floor absorbers out of the way before you can make adjustments in your setup? With DMAS walkway absorbers you have an immediate pathway available.
It doesn’t matter whether you’re designing a component for a road vehicle, developing a new wireless router or launching a new type of satellite into orbit, there are strict limits imposed on the amount of electromagnetic interference any new product (or its component parts) can emit. These limits are clearly delineated in various standards that govern different applications.
Take for instance the MIL-STD-461 standard which provides the requirements for systems designed for armed forces or the CISPR 25 standard which is an important benchmark for the automotive industry. However, in order to effectively determine whether a new product is compliant, you need to isolate as much interference from outside signals as possible. That is where the RF absorber comes in.
Thanks to a number of smart innovations, DMAS RF absorbers can be made using durable and non-toxic polystyrene material, making it a far better choice than traditional foam absorbers.
DMAS RF absorbers are made right here in the Netherlands. This allows us to guarantee a great product that lasts for a long time.
Unlike competing foam alternatives, DMAS absorbers have all the qualities you need (durability, resistance to humidity, fire retardant) without using hazardous materials during production.
ISO 9001 and ISO 14001 standards apply to production to ensure tight quality control. Testing is done according to IEEE std 1128-1998 standard.
Thanks to a number of smart innovations, DMAS RF absorbers can be made using durable and non-toxic polystyrene, making it a far better choice than traditional foam absorbers.
Unlike competing alternatives, DMAS absorbers have all the qualities you need (durability, resistance to humidity, fire retardant) without using hazardous materials during production.
ISO 9001 and ISO 14001 standards apply to production to ensure tight quality control. Testing is done according to IEEE std 1128-1998 standard.
DMAS RF absorbers are made right here in the Netherlands. This allows us to guarantee a great product that lasts for a long time.
RF absorbing materials are available in various formats. There are sheets, tiles, wedges, pyramids, convoluted and multilayer broadband absorbers. Still, most facilities opt for the RF absorbers with the classic pyramidal shape since these offer solid performance in commonly tested frequencies. The performance is measured in dB. For instance: if an absorber has a -25 dB level of attenuation, a 10 dB signal will be reduced to -15 dB once it has passed through the absorbing material. There is something else to consider other than the shape of the RF absorber and that is the actual material used.
In general, the RF absorbers we produce are divided into two product categories: hybrid and microwave absorbers. Tuned for use in semi & full anechoic chamber solutions designed for electromagnetic compatibility testing applications, DMAS hybrid EMC absorbers have pushed the industry forward by using EPS material on top of a ferrite tile base layer.
The second major product category is the Microwave absorber. Over the few years, our RF absorbers for use in (among others) near-field, far-field measurement applications, among others, have greatly improved due to changes in raw material and enhanced design that changes its shape from a taper to an almost perfect pyramidal absorber. This leads to significantly increased performance comparable to traditional foam solutions without compromising eco-friendliness or rigidity.
Of course, sometimes you’re willing to sacrifice an acceptable amount of performance for a significant increase in the level of access for your engineers. For full anechoic chambers that require easy access to equipment under test, consider using a DMAS walkway absorber. The reinforced fiberglass epoxy grid panels are strong enough to walk on without compromising the integrity of your research.
Looking for the very best in absorber technology? DMAS absorbers are designed for modern testing facilities and represent the latest in sustainability & performance. Contact us today to get started.
Would you like to discuss a new project or do you want to know more about a specific absorber? Use the form below or call us directly via +31 (0)71 542 1880 for more information.
Hoge Rijndijk 205
2382 AL
Zoeterwoude
The Netherlands
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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