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Absorbers
> RF Absorbers

EHP High Performance Microwave Pyramidal Absorber

EHP-26CL

ETS-Lindgren's type EHP (Extra High Performance) microwave absorber is designed for use over a wide frequency spectrum and has been used as an effective tool for the reduction of reflections from 30 MHz through 100 GHz.

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ETS-Lindgren's type EHP (Extra High Performance) microwave absorber is designed for use over a wide frequency spectrum and has been used as an effective tool for the reduction of reflections from 30 MHz through 100 GHz. Each piece of absorber is fabricated of the highest quality urethane foam, which is cut into a precise bun configuration and impregnated with a conductive carbon using a proprietary formulation.

Read a case study on how this product was used for drone/UAV (Unmanned Aerial Vehicle) testing.

Whether you need just a few pieces of absorber or a complete turnkey chamber, we have the experience and resources to help you with the right solution.

Key Features
  • Numerically Optimized Design
  • Fire Retardant
  • FlexSorb  Available
Product Details
Physical Specifications
Adhesive: Yes
Clip: Yes
Color: Rantec Blue
Environmental:  Temperature: 12° C to 32° C (50° F to 90° F)
                             Relative Humidity: 50% ± 20%
Maximum Absorber Temperature: 90° C (190° F)
Ratings, Fire Retardant: NRL 8093 Tests 1, 2 & 3, TI #2693066, MIT MS-8-21, UL 94 and DIN 4102-B2
Velcro: 45.72 cm (18 in)

Dimensions by Model
ModelAbsorber FootprintPyramids per Absorber
Base HeightOverall HeightPyramid HeightWeight
EHP-3PCL24 in x 24 in
256
1.9 cm (0.75 in)8.25 cm (3.25 in)6.4 cm (2.52 in)1 kg (2.20 lb)
EHP-5PCL24 in x 24 in144
2.5 cm (0.98 in)
12.7 cm (5.00 in)10.2 cm (4.00 in)1.6 kg (3.53 lb)
EHP-8PCL
24 in x 24 in64
5.1 cm (2.01 in)21.6 cm (8.50 in)16.5 cm (6.50 in)2.8 kg (6.17 lb)
EHP-12PCL24 in x 24 in36
5.7 cm (2.24 in)31.1 cm (12.24 in)25.4 cm (10.00 in)4.6 kg (10.14 lb)
EHP-18PCL24 in x 24 in16
5.7 cm (2.24 in)46.4 cm (18.27 in)40.6 cm (15.98 in)4.6 kg (10.14 lb)
EHP-24PCL24 in x 24 in9
10.2 cm (4.02 in)61.0 cm (24.02 in)50.8 cm (20.00 in)6.1 kg (13.45 lb)
EHP-36PCL24 in x 24 in
4
15.2 cm (5.98 in)91.4 cm (35.98 in)76.2 cm (30.00 in)9.5 kg (20.94 lb)
EHP-48PCL24 in x 24 in
4
20.3 cm (7.99 in)121.9 cm (47.99 in)101.6 cm (40.00 in)11.3 kg (24.91 lb)
EHP-72PCL24 in x 24 in
1
30.5 cm (12.01 in)182.9 cm (72.01 in)152.4 cm (60.00 in)15.9 kg (35.05 lb)
NOTE: All absorbers are checked at spot frequencies as a part of quality assurance program at production, for example, EHP-12PCL are checked at 1 GHz, 2 GHz, 4 GHz and 8 GHz to meet the above requirements.
Electrical Specifications
Maximum Power Density: 775 W/m2, 77.5 mW/cm2, 0.5 W/in2

Frequency Range by Model
ModelFrequency MinimumFrequency Maximum
EHP-3PCL4 GHz
40 GHz
EHP-5PCL2 GHz40 GHz
EHP-8PCL1 GHz40 GHz
EHP-12PCL1 GHz40 GHz
EHP-18PCL500 MHz40 GHz
EHP-24PCL200 MHz40 GHz
EHP-36PCL80 MHz40 GHz
EHP-48PCL80 MHz40 GHz
EHP-72PCL80 MHz40 GHz

Maximum Reflections at Normal Incidence

80 MHz
120 MHz
200 MHz
300 MHz
500 MHz1-2GHz
2-4 GHz4-8 GHz
8-12 GHz
12-18 GHz
18-40 GHz
EHP3PCL

-30 dB
-40 dB
-45 dB
-45 dB
EHP5PCL

-30 dB
-40 dB
-45 dB
-50 dB
-50 dB
EHP8PCL
-30 dB
-40 dB
-45 dB
-50 dB
-50 dB
-50 dB
EHP12PCL


-35 dB
-40 dB
-45 dB
-50 dB
-50 dB
-50 dB
EHP18PCL
-30 dB
-40 dB
-45 dB
-50 dB
-50 dB
-50 dB
-50 dB
EHP24PCL

-20 dB
-30 dB
-35 dB
-40 dB
-50 dB
-50 dB
-50 dB
-50 dB
-50 dB
EHP36PCL
-11 dB
-13 dB
-25 dB
-30 dB
-40 dB
-45 dB
-50 dB
-50 dB
-50 dB
-50 dB
-50 dB
EHP48PCL
-15 dB
-20 dB
-30 dB
-35 dB
-40 dB
-45 dB
-50 dB
-50 dB
-50 dB
-50 dB
-50 dB
EHP72PCL
-20 dB
-30 dB
-40 dB
-40 dB
-45 dB
-50 dB
-50 dB
-50 dB
-50 dB
-50 dB
-50 dB

Product Options

Optional FlexSorb™ Treatment

With FlexSorb, you can enjoy the same excellent performance characteristics as our traditional absorbers, with the advantages of improved durability. FlexSorb is a special absorber treatment that allows an absorber to bend but not break. It's ideal for high traffic areas like chamber doorways and interior walls, or for tests that require an anechoic floor treatment. And, being that FlexSorb is also non-hygroscopic: its weight does not change in the presence of atmospheric moisture.