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MT45-JT Absorbers (NEW)

Introducing the Javelin Tip | Microwave absorber

The MT45-JT owes its name to the recognizable Javelin tip it’s equipped with. This specially designed tip allows the absorber to operate in frequencies from 500 MHz all the way up to 40Ghz, meaning our polystyrene absorber is now able to match the performance of traditional foam absorbers, making it by far the best choice for use in full anechoic chambers and antenna test ranges.

Polyurethane versus polystyrene

We have long been staunch advocates of polystyrene absorbers, since these offer many advantages over their polyurethane foam counterparts. They have superior rigidity and tensile strength, they are compliant with all necessary fire retardant standards without the use of hazardous materials and they are highly resilient to changes in ambient humidity and temperature. This results in an extremely durable product that comes with a 25 year warranty and is expected to last well beyond that.


Features and benefits

  • Enhanced product design featuring

         o   Alternating tapers (vertical / horizontal)
         o   Light weight (40% lighter than foam)
         o   Removable tapers

  • Certified for use in clean rooms (class 10.000 / ISO14644-1 class 4)
  • Uniform carbon cell loading
  • Compliant with fire retardant standard ISO 11925-2 class E
  • Rigidity and superior tensile strength (no drooping tips)
  • Resilience to humidity (non-hygroscopic)
  • Superior product life (upwards of 40 years)
  • Lifetime stable performance


No downsides

What all of this means is there are no longer any downsides to using polystyrene absorbers for microwave frequency testing. Thanks to a patented design, Comtest’s new polystyrene absorbers offer performance that matches their incredible durability. Are you interested in a full anechoic chamber or antenna test range equipped with the latest in polystyrene absorber technology? Contact us today to discuss the possibilities.


Test results are collected in accordance with IEEE std 1128-1998. This standard suggests to use the arch measurement method at f> 1GHz and put certain limits on a sample size. Considering these limits, the arch set-up available in Comtest lab enables fair reflectivity measurements in 2-18GHz frequency range but can cause inaccurate results for 1-2GHz band following the IEEE std 1128-1998 method. In this respect the results collected at 1-2GHz frequencies are excluded from the above plot to provide intelligent and justified measurement data only.


Do you want to know more about the MT45-JT? Contact us now!

If you wish to schedule an appointment to discuss the new absorber, do not hesitate to contact us either by phone at +31 71 541 75 31 or by the use of the contact form on this website. We look forward to hearing from you!