ETS-Lindgren's Flat Laminate Absorber, commonly known as lossy foam block provides moderate performance and is flexible and easy-to-cut for placement around positioners, near-field scanners, etc.
ETS-Lindgren's Flat Laminate Absorber, commonly known as a lossy foam block is a moderate performance broadband microwave absorber with graded dielectric material. The absorber is fabricated using three layers of carbon impregnated foam. By using a front layer with a small loss tangent, a center layer with a moderate loss tangent, and a bottom layer with a higher loss tangent, an electrical taper is achieved that yields a material with an average reflection coefficient of -20 dB over a wide frequency range.
A 100 percent inspection of the flat laminate series material is performed by measuring the reflection coefficient at the frequencies of 0-18 GHz shown under the Product Charts tab. The reflection coefficient is guaranteed to be -20 dB (1 percent) or less at the test frequency.
ETS-Lindgren's Flat Laminate Absorber or lossy foam block is flexible and easily cut using a band saw or a knife with a serrated edge. Best performance is achieved when the absorber is mounted in intimate contact with a metal surface. The front surface of the Flat Laminate Absorber is painted a light blue color.