ARC Technologies, a Hexcel company, offers a wide variety of RF absorbers. Multilayer (ML) is a family of lightweight, flexible open cell foam absorption material, designed for broadband applications. The ML absorbers function on an impedance matching principle, with each layer loaded for predetermined loss tangents, providing electrically tapered reflection loss characteristics.
A combination of open cell foam sheets with stepped carbon loads. It is available in sheet form, it has low density, light weight, and can be custom carbon loaded to meet high or low loss requirements. This RF absorber is effective mainly for far field requirements and controlling surface currents.
Why ML is Effective?
The ML (multilayer) RF absorber allows the LS layers to be built up with each of the layers loaded for a predetermined loss tangent, providing electrically tapered reflection loss characteristics. The layers can be laid up to match the customer’s specification.
When to Use:
|ML SERIES NUMBER||REFLECTION LOSS||REFLECTIVITY RANGE||THICKNESS||WEIGHT|
|ML-72 Series||≤-17 dB||12 GHz to 18 GHz||0.28″ (0.71 cm)||0.6 lbs. (0.272 kg)|
|ML-73 Series||≤-17 dB||8 GHz to 18 GHz||0.42″ (1.07 cm)||0.9 lbs. (0.408 kg)|
|ML-74 Series||≤-17 dB||4.5 GHz to 18 GHz||0.75″ (1.91 cm)||1.0 lb. (0.454 kg)|
|ML-75 Series||≤-17 dB||3.5 GHz to 18 GHz||1.125″ (2.858 cm)||1.5 lbs. (0.680 kg)|
|ML-77 Series||≤-17 dB||2.5 GHz to 18 GHz||2.25″ (5.72 cm)||2.35 lbs (1.066 kg)|
|ML-79 Series||≤-17 dB||2 GHz to 18 GHz||4.50″ (11.43 cm)||5.0 lbs. (2.268 kg)|