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PU foam based flat absorbers

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These absorbers can be used at higher frequencies than traditional shielding and can also be used with other EMI/RFI shields to extend frequency range. The microwave absorbers can be installed easily with (PSA) pressure sensitive adhesive, often directly onto high-frequency board-level components to absorb unwanted radiated and surface wave EMI/RFI and meet FCC requirements without shielding.

PU foam based flat absorbers has the advantages of light quality and good performance, which can be applied for the site near the antenna, and it can be used to reduce the side-lobe, improve the front-to-back ratio, absorb the clutter, eliminate the interference, as well provide the camouflage and concealment of the military facilities.

Reflection loss under vertical incidence (-dB @ GHz)
3650 - PU foam based flat absorbers
  • Such absorbers have a flat appearance, with black color (it can be selected as request), it is clean and soft.
  • Oxygen index ≥29% (GB/T2406-93), which belongs to flame retardant B2 level (GB8624-1997)
  • Power handling capacity up to 1.5 kW/m²
  • Good environmental performance, all raw materials can meet the environmental requirements, no volatile, no smell and non-toxic.
  • Installation method: Direct adhesive paste and the absorbers with self-adhesive tape can be also offered.
  • Working temperature: -60ºC~90ºC
  • relative humidity: 55%±15%
  • Frequency range: 1GHz~18GHz

Please note : Other sizes and thicknesses on request. For the data above 1GHz, it is obtained by far-field RCS test method (GJB2038A-2011). The performance data listed in the above table is the guaranteed data, and the measured data would be equal to or better than the guaranteed data. Certification: CE ROHS

Product specification and part numbers
Part number * Base size (mm x mm x mm) Standard weight (kg/m2)
3650-5  600 x 600 x 5  0,3
3650-10  600 x 600 x 10  0,5
3650-20 600 x 600 x 20  0,6
3650-50 600 x 600 x 50 1,5
3650-100 600 x 600 x 100 3,0
3650-40ML 600 x 600 x 40 1,5
PU Foam based flat absorber technical drawing schematic diagram
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