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Key Features

  • Numerically Optimized Design
  • Fire Retardant
  • FlexSorb option available
  • Download PDF Datasheet
  • 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.

    Specifications
    View the EHP High Performance Microwave Pyramidal Absorber technical specifications below

    Physical Specifications

    Adhesive: Yes
    Clip: Yes
    Color: Rantec Blue
    Environmental Temperature: 22 C 10 C (70 F 20 F) Maximum
    Service 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
    Specifications Relative Humidity: 50% 20%
    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)6.4 cm (2.52 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

    Charts
    View the EHP High Performance Microwave Pyramidal Absorber charts below