Most resistive structure absorbers work on ‘progressive impedance’ where the absorbers strive to mimic free space via the shape & resistivity this leaves these absorbers weak when the wave becomes very long at low frequency.
Ferrite tiles do not work on progressive impedance but instead use magnetic permeability where the structural domains in the material which have a polarized bias is affected by rotating against the oscillating wave and thus absorbing the radiated energy.
The ferrite tile performance in the region of 30-800MHz is good but above 1GHz the performance is low.
Global EMC Ferrite Tile Product
Global EMC provide only the very best 100mm x 100mm x 6.7mm ferrite tiles with the best performance.
All off Global EMC CISPR16-1-4 compliant chambers are lined with this high quality ferrite system.
The ferrites can be supplied individually or on 6x6 pre-mount boards.
In anechoic chambers
In product with low frequency problems
For general RF absorbing requirements
About Global EMC
Global EMC UK Ltd has 30 years experience in RFI / EMI / EMC and are specialists in shielding / RF / Microwave absorber applications. Continual development of shielded
rooms (Faraday cages) and anechoic chambers has bought us to the forefront of shielded chamber and anechoic test chamber technology. Read More >