Anechoic Chambers
Shielded Chambers,
Screened Rooms
& Faraday Cages
Anechoic Absorbers
Shielding materials & shielding components

Pyramidal Anechoic Absorbers

Pyramidal Anechoic Absorbers
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The facts about... Pyramidal Absorbers"
Anechoic absorbers for the absorbing of radio wave and microwave energies can also be known a RAM (radar absorbing material) The inside of a shielded chamber will reflect any radio...
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The Global EMC range of pyramid absorbers

has proven to give superior performance over the last 12 years and has been used in many successful anechoic installations. Global EMC offer a range of pyramidal absorbers that give performance advantages in many areas:


  1. The anechoic performance (return loss) – Our pyramidal absorber offers high reflectivity performance due to the two stage carbon doping process, the ‘GDS’ range of pyramid absorber yields >–l50dB reflectivity @ 2.5 x wavelength.
  2. The fire safety performance is the best possible and fully meets all aspects of NRL8093 part 1 (electrical stress), part 2 (hot poker) and part 3 (surface flame propagation)
  3. The fire safety is gained by benign fillers and there are no halogens used in the manufacturing process.

pyramid absorbers graph

Each absorber piece is checked for the correct dielectric constant by using a special probe system to confirm optimum performance for radiated electromagnetic energy.


Anechoic Pyramidal absorbers
Anechoic Pyramidal absorbers graph

Technical Details
Anechoic performance
PART No
Height (mm)
Base (mm)
Peaks/m2
Peaks/tile
Weight
18dB @
50dB @
GDS-50
50
25x25
1600
400
2.5kg/m2
1500MHz
15GHz
GDS-100
100
40x40
576
144
3.8kg/m2
600MHz
8GHz
GDS-300
300
100x100
100
25
11kg/m2
200MHz
2.5GHz
GDS-500
500
166x166
36
9
18kg/m2
125MHz
1.5GHz
GDS-700
700
250x250
16
2
25kg/m2
80MHz
1GHz