Lightweight reticulated foam broadband absorber
PPG C-RAM® AR is a line of reticulated foam Radar Absorbing sheet materials, comprised of urethane foam and a gradient lossy coating. It absorbs microwave energy across a wide range of frequencies. Typically the thicker the material the lower in frequency PPG C-RAM AR will attenuate.
It has proven to be ideal for lining shrouds of communications antennas for the suppression of sidelobes. It can also be used to cover fences to separate adjacent antennas and shield or isolate equipment. The open-cell structure permits airflow freely through the absorber. When used outdoors, rain will also freely drain from the product
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Have questions or need support for your aerospace project? Contact PPG’s aerospace team today for guidance and tailored solutions.
Cuming Microwave offers two types of PPG C-RAM AR: our standard performance AR and high performance AR
PPG C-RAM AR SELECTION
Typically the standard performance AR is suitable for most antenna shroud applications, and high performance AR is suited for applications where maximum attenuation is desired, such as RCS reduction, chamber fences, Radomes, electronic enclosures and foam through applications. If standard performance AR is suitable it will cost less than high performance AR. Reticulated foam absorbers in general are the lowest cost absorbers, including high performance AR. AR can also be supplied as an insertion loss material. On specialty applications AR has been purchased up to 3.0 in. thick. Consult the factory if a required thickness is not listed.
Service temperature
- 180°F
Shelf life
- 5 yrs. Minimum