Lossy Flexible Foam

ARC Technologies, a Hexcel company, offers a wide variety of RF absorbers. The lossy flexible foam (LS) product is a flexible, low density, high loss, carbon impregnated open cell foam. It is available in a range of thicknesses with various carbon loading. The carbon loading allows it to be effective over a broad range of frequencies, typically providing 5 dB loss or greater. This product is halogen free, RoHS and REACH compliant.

The LS series is an open cell foam with carbon loading. It is available in sheet form, has low density, is light weight and can be custom carbon loaded to meet high or low loss requirements. It is effective mainly for far field requirements. This product is typically used in a multi-layer form taking advantage of the layering of various carbon loadings. This RF absorber is ideal for suppression of electromagnetic energy. Placement in a cavity will reduce multiple reflections, which result in improved performance. Product provides broadband absorption from 500MHz to 40GHz.

The LS material is effective due to its open cell foam construction with its ability to retain various carbon loadings to absorb the EMI. The open cell foam can be for outdoor applications. These RF absorbers can be weather sealed for outdoor protection.

• Crosstalk reduction
• Antenna shrouding
• Shadowing parts for RCS Measurements
• Shadowing components of anechoic chambers
• Typically used in multi-layer format
• Broad band absorption
• Elastomer coatings can be added to resistance against:
  • Jet fuel
  • Hydraulic fuel
  • Gasoline
  • Water