Emerson & Cuming Microwave Products, is a world leader in the development and manufacture of microwave absorbing materials, low-loss dielectrics, electrically conductive shielding materials, anechoic chambers, and smart tag isolators.

For over half-a-century, Emerson & Cuming Microwave Products has been the undisputed technology leader offering high quality products, a wide range of capabilities, R&D laboratories, and an in-depth knowledge of materials science, chemistry, microwave theory, and measurement techniques.

As a company, Emerson & Cuming Microwave Products excels in the design and manufacture of custom parts to meet your design specifications. We are also recognised for our experienced sales engineers and customer service support, as well as for quick turn around on product quotes and short product ship lead times that are unmatched in the industry.

Emerson & Cuming Microwave Products was the first global manufacturer of absorbers to achieve ISO 9001:2000 registration, and currently maintains this status.

Capabilities & Services

State-of-the-Art Carbon Line Processing Facility
Up to 10,000m² of dipped and sprayed carbon foam products can be produced each week at our state-of-the-art facility in Geel, Belgium. Benefits include consistent electrical properties, cost effectiveness based on low rejection rates, and reduced need for inventorying finished goods.

Kiss cutting delivers precision cuts through a top layer of material (absorber and adhesive) without cutting the bottom release liner, such as a sheet of stickers. This is commonly used when cutting several different parts and the customer wishes to keep all of the parts together on one sheet or as a set.

& Development and Test Facilities
Continuing investment in people and equipment enable Emerson & Cuming Microwave Products to maintain its global leadership position in the military, aerospace, commercial, wireless communications, automotive, and biomedical markets. Our test facilities allow us to develop value added solutions for our customers. Some of the electrical test capabilities include; microwave reflectivity measurements from 500 MHz to 26 GHz; complex material electromagnetic parameters from 500 MHz to 18 GHz; dielectric constant and loss tangent measurements; volume resistivity; and electrical conductivity.

Emerson & Cuming Microwave Products also offers a wide range of mechanical and environmental testing. Typical mechanical properties that can be measured include; elongation, tensile strength, shear strength, flexural strength, and thermal coefficient of expansion. Our most common environmental tests available include; water absorption and resistance, flammability, temperature range and resistance, and stability.

of our products can be seen below


ECCOSORB® absorber products are available spanning a wide frequency range starting at 600 MHz well up into the millimetre wave region with proven applications up to 90 GHz. Products are available as flexible foams and elastomers as well as rigid polymers all in standard and custom configurations.

Narrow Band Free Space Absorbers Frequency

Narrow Band Free Space Absorbers        Frequency

ECCOSORB® SF                                           0.7 to 40 GHz
ECCOSORB® SFU                                        0.7 to 40 GHz
ECCOSORB® DSF                                           3 to 40 GHz
ECCOSORB® DSF-U                                       3 to 40 GHz

Broad Band Free Space Absorbers

Broad Band Free Space Absorbers

ECCOSORB® FGM-40                          4 to 10 GHz
ECCOSORB® FGM-125                        2 to 12 GHz
ECCOSORB® FGMU-40                       2 to 12 GHz
ECCOSORB® FGMU-125                    2 to 12 GHz 
ECCOSORB® AN                                   above 600 MHz
ECCOSORB® AN-W                              above 600 MHz 
ECCOSORB® HR                                  above 5 GHz
ECCOSORB® H                                     above 4 GHz
ECCOSORB® HC                                  above 8 GHz
ECCOSORB® SLJ                                 X-and Ku-band 
ECCOSORB® CV                                  above 1.5 GHz
ECCOSORB®  OCF                              above 1.5 GHz

Cavity Resonance Absorbers

Cavity Resonance Absorbers

ECCOSORB® FGM-U                        above 1 GHz
ECCOSORB® GDS                            above 6 GHz
ECCOSORB® GDSU                         above 6 GHz
ECCOSORB® MCS                            0.8 to 18 GHz
ECCOSORB® MCSU                         0.8 to 18 GHz
ECCOSORB® LS                               above 1 GHz
ECCOSORB® QR-13AF                   above 1 GHz
ECCOSORB® BSR                           above 6 GHz
ECCOSORB® BSR-U                       above 6 GHz
ECCOSORB® COATING 300          above 1 GHz
& 269E                                                  above 1 GHz

Load Absorbers

Load Absorbers

ECCOSORB® MF                          above 1 GHz
ECCOSORB® MF500F                 above 1 GHz
ECCOSORB® MFS                        above 1 GHz
ECCOSORB® CR                          above 1 GHz
ECCOSORB® CRS                       above 1 GHz
ECCOSORB® CFS-8480             0.8 to 18 GHz

Low Loss/Low Dielectric Foam Products

Low Loss/Low Dielectric Foam Products Loss Tan Dielectric
ECCOSTOCK® SH 0.001 - 0.005 1.04 to 1.25
ECCOSTOCK® FPH 0.001 - 0.005 1.04 to 1.25
ECCOSTOCK® LoK <0.004 1.7
ECCOSTOCK® PP 0.0001 1.03 - 1.06
ECCOSTOCK® FFP 0.005 1.25

Low Loss Powders, Resins & Adhesives

Low Loss Powders, Resins & Adhesives Loss Tan Dielectric
ECCOSTOCK® HiK Powder 0.0004 - 0.0007 0.01
ECCOSTOCK® HiK Cement 2.5 to 12.0 3 to 15


Emerson & Cuming Microwave Products operates globally with ISO 9001:2008 certified manufacturing plants in Geel, Belgium and Randolph, Massachusetts in the US.

Tel: 0870078 7877 Fax: 0870 0780545


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