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Key Features

  • Extremely Low Flammability
  • Fire Retardant
  • Numerically Optimized Design
  • Rapid "Pump-down" for High Vacuum Applications
  • Honeycomb Structure
  • Stable up to 250C (482F)
  • Download PDF Datasheet
  • ETS-Lindgren's high-power absorber is a honeycomb substrate made from a phenolic-based material. Lossy films are coated on the walls of the honeycomb for effective absorption of incident electromagnetic waves. The hollow network of honeycombs allows air to be drawn through them while the phenolic-based material withstands high temperatures. The benefit is that electromagnetic energy flux can be loaded to the absorber at much higher power densities than conventional absorbers made with polyurethane material.

    Based on a recent high power absorber study, our phenolicbased material can withstand up to 2.0 W/in2, and maximum temperatures up to 250 degrees Celsius (482 degrees F) without forced airflow. With forced airflow, this absorber can withstand much higher electromagnetic field power densities. Our design engineers are ready to bring additional expertise on both RF and mechanical details to make our high power test systems achieve the design goals and safe operation required for your specific needs.

    Specifications
    View the HP High Power Microwave Absorber technical specifications below

    Physical Specifications

    Dimensions by Model
    ModelOverall HeightBase HeightPyramid HeightNominal WeightPyramids Per Absorber
    HP-3PCL8.25 cm (3.25 in)1.9 cm (0.75 in)6.4 cm (2.52 in)1 kg ( 2.20 lb )256
    HP-5PCL12.7 cm (5.00 in)2.5 cm (0.98 in)10.2 cm (4.02 in)1.6 kg ( 3.53 lb )144
    HP-8PCL26.1 cm (10.28 in)5.1 cm (2.01 in)16.5 cm (6.50 in)2.8 kg ( 6.17 lb )64
    HP-12PCL31.1 cm (12.24 in)5.7 cm (2.24 in)25.4 cm (10.00 in)3.8 kg ( 8.38 lb )36
    HP-18PCL46.4 cm (18.27 in)5.7 cm (2.24 in)40.6 cm (15.98 in)4.6 kg ( 10.14 lb )16
    HP-24PCL61 cm (24.02 in)10.2 cm (4.02 in)50.8 cm (20.00 in)6.1 kg ( 13.45 lb )9

    Electrical Specifications

    Maximum Reflections at Normal Incidence


    80 MHz
    120 MHz
    200 MHz300 MHz
    500 MHz
    1-2 GHz
    2-4 GHz
    4-8 GHz
    8-12 GHz
    12-18 GHz
    18-40 GHz
    HP3PCL



    -25 dB
    -35 dB
    -40 dB
    -40 dB
    HP5PCL
    -25 dB
    -35 dB
    -40 dB
    -45 dB
    -45 dB
    HP8PCL

    -25 dB
    -35 dB
    -40 dB-45 dB
    -45 dB
    -45 dB
    HP12PCL

    -30 dB
    -35 dB
    -40 dB
    -45 dB
    -45 dB
    -45 dB
    HP18PCL
    -25 dB
    -35 dB
    -40 dB
    -45 dB
    -45 dB
    -45 dB
    -45 dB
    HP24PCL
    -15 dB
    -25 dB
    -30 dB
    -35 dB
    -45 dB
    -45 dB
    -45 dB
    -45 dB
    -45 dB