Convoluted Foam Microwave RF Absorber


Convoluted Foam Microwave RF Absorber is a remarkable product that provides a solution to the broadband reflection loss at microwave frequencies. It is a conductive carbon loaded sheet stock, which is lightweight and is easy to handle. The product has cone-shaped foam that offers high reflection loss and has a wide range of applications. It is designed to be applied to metal surfaces such as test boxes, housings, radomes, and network enclosures. Furthermore, its application is not limited to metallic surfaces only, but it can also be applied to antennae. In addition, Reticulated Foam Absorbers is a top-notch product that absorbs energy at different angles of incidence at frequencies from 1 GHz to 18 GHz.

The Convoluted Foam Microwave RF Absorber is considered a premium quality microwave absorber. It is made of moderately flexible urethane foam material, which makes it convenient to use. The front surface of the product has a convoluted, or egg-carton shape, that provides a shape that is rounded with no sharp corners or points. This feature makes it highly efficient for mm wave frequencies and allows for wide incidence angles without any degradation in performance. With the ability to perform effectively at incidence angles of up to 60° off-normal, the Convoluted Foam Microwave RF Absorber is indeed a valuable product that can meet diverse industrial requirements.

More information can be found Here.


  • RF Test Boxes/Fixtures
  • Antenna Pattern Performance
  • Sidelobe/backlobe reduction
  • Resonant Cavity Attenuation
  • EMI Reduction
  • Rx/Tx Antenna Isolation
  • Radar Cross Section Reduction

Features and Benefits

  • Lightweight foam
  • Cost effective broadband material
  • Easily applied with PSA
  • Most broadband absorber material
  • RoHS Compliant
  • Halogen Free

Standard Convoluted Foam Absorber

Frequency (GHz)Thickness (in/mm)Part Number

Ordering Information

Convoluted Foam Microwave RF Absorber is available in 610 x 610mm (24″ x 24″)  sheets only. However we can cut the sheets to shape and size as per your requirements.

It is available with and without PSA. If you require PSA please add the suffix “-PSA” to the required part number. For example for 38.4mm thick Convoluted Foam Absorber with PSA the part number would be “MA-CF-1-PSA”.

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