RF Absorber

ECOTONE™ RADIO FREQUENCY / MICROWAVE ABSORBERS

ECOTONE™ Microwave absorbers are increasingly being used to enhance shielding performance at higher frequencies. ECOTONE™ Offers a wide product range broadband absorbers.

Pyramidcal Absorber or geometrically tapering shape absorber performance is directly related to size – low frequency performance requires longer pyramids, 96 inch absorber provides 35 dB absorption at 125 MHz increasing to 50 dB at 13 GHz.

FEATURES OF RF ABSORBERS

  • RAM is designed and shaped to absorb incident RF Radiation.
  • Comprised of fireproofed urethane foam loaded with carbon.
  • The more effective the RAM is the less will be the level of reflected RF radiation.
  • Available with wide range of thicknesses and absorbencies.
  • Meets the fire retardant requirements of NRL specification 8093 tests 1, 2 and 3.

RF ABSORBERS (RAM)

  • Quite Zone better then – 52 dB.
  • Temperature resistant.
  • 0.5 Watt/in2 or 775 Watt/m2 Power Handling.
  • Long performance warranty
  • Tested as per IEEE standards
  • Fire retardant as per NRL 8093
  • Long product life up to 25 years.
  • ROHS compliance for safety.

REFLECTIVITY

  • RF absorbing materials used in anechoic chambers provide reflection coefficients better than -40 dB.
  • It means that is an EM wave in incident normally to the surface RAM, the reflected wave would be 40 dB smaller

PERFORMANCE OF ABSORBERS

  • The lowest test frequency of operation, at which measured reflections from the internal surfaces will be the most significant compared to higher frequencies.
  • Pyramidal RAM is at its most absorptive when the incident wave is at normal incidence to the internal chamber surface when the pyramid height is approximately equal to λ / 4, where λ is the free space wavelength.
  • Accordingly, increasing the pyramid height of the RAM for the same square base size improves the effectiveness of the chamber at low frequencies
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