The object is for the measurement chamber to mimic free-space via avoiding the reflection of radiated electromagnetic energy (usually Microwave frequencies).
The pyramidal absorbers are optimised to give the best 'return loss' performance in relation to the wave length:
- -30dB @ 1x wave length
- -40dB @ 2x wave length
- -50dB @5x wave length or more.
- Can reach -60dB return loss by design
The zone of specific interest can be called the quite Zone (or QZ). Contact Global EMC for design help.
- Standard painted carbon loaded foam (Traditional type)
- Rubberised painted type
- Moulded polystyrene type
Global EMC's anechoic absorbers are very 'fire safe' and are compliant to:
- NRL parts I/II/III
- UL94 HBF
- DIN 4102-B2