Broadband Microwave absorbing foam is a lightweight, cost effective solution addressing today’s challenges in communication infrastructure. Single and multilayer structures consist of tuned absorbing layers with specific dielectric gradients to obtain its best possible matching with the impedance of air. 

Eccosorb  HR

Eccosorb HR is a controlled gradient open cell series for free space absorber application 

Gradient loading ensure good performance from few Ghz up to above 100Ghz . Eccosorb HR is used in various applications such as lining of antenna shrouds for low side-lobe reflector antennas, decoupling of adjacent antennas and array elements, camouflaging and interference suppression applications 

Eccosorb AN

Eccosorb AN is a multi layer gradient free space absorber sheet series

Products are made from polyurethane foam treated with special filler and assembled in a laminate construction to generate a controlled conductivity gradient. Each product in the series has it’s own low end cut-off frequency that forms the basis of selection based on operating frequency. Reflectivity reduction specification is at least 17 dB down. Examples for use are radar antenna nacelles, anechoic enclosures, antenna, or target test mounts in radar ranges.

For harsh environment application, a neoprene coated nylon fabric wrap option is available as AN W. Various other option like polyurethane coating or PVC lining are available to meet environmental requirements.

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Eccosorb LS

These foams achieve lossy behavior are available in a wide range of dielectric properties characterized by insertion loss along with different thicknesses for performance tuning. ECCOSORB LS is not weatherproof, but can be supplied with a special coating for outdoor use or where the absorber may come in contact with fuel, lubricants, or hydraulic fluids. ECCOSORB LS is used to absorb electromagnetic energy in a variety of applications. It can be used to line the interior of a cavity to lower its Q in RF amplifiers, oscillators, cabinets containing microwave devices, computer housings, or LNB’s. It can also be used for the isolation of antennas by insertion loss.

Pressure Sensitive Adhesive option is available or Laird can supply wet adhesive .

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The product comes in custom shapes and sizes and provides excellent broadband microwave absorption along with light weight. 

For outdoor applications the material can be filled with a closed cell rigid urethane foam to create a broadband structural foam. The materials can be molded to shape, machined or bonded into complex covers and components. If skins are applied, rigid lightweight structural panels are formed. 

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Eccosorb CV is a moderately flexible urethane foam material having a front surface cut to a convoluted (egg-carton) shape. Because of the rounded convolutions and lack of sharp corners and points, Eccosorb CV is the preferred absorber for mm wave frequencies and for very wide incidence angles. There is no degradation in performance at incidence angles out to 60° off normal.

Eccosorb OCF has a convoluted shape similar to the Eccosorb CV material but is made from a much more open cell foam material. This open structure allows the piece to be used at high humidity although long term exposure to water and UV should be avoided. For indoor higher power requirements, cooling air can be circulated through the foam structure, either by natural convection or by fan, to keep the temperature of the piece down. Because of the rounded convolutions and lack of sharp corners and tips, Eccosorb OCF is the preferred absorber for mm wave frequencies and for grazing incidence angles out to 60° off normal. It is available in 2 thicknesses 7.5 cm ad 10 cm.

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