Yes, but.....
To be effective down to 30 MHz, "classic" carbon loaded, tapered foam
absorbers need to be huge, on the order of 2 meters high. That eats a
lot of internal chamber volume. I'm also not sure if anyone makes them
currently. Also, do _not_ buy old (10 year +), used absorbers! They
still work fine as absorbers, but tend to lose there self-extinguishing
capability due to the migration of the retardant salts used in the
manufacturing process for that purpose. Urethane fires are not something
you want to experience.
Respectfully,
Brent DeWitt
iRobot
Bedford, MA
On 3/16/2021 5:13 AM, McBurney, Ian wrote:
A question for the EMC experts.
Is there an alternative rf absorber to ferrite tiles that works
between 30MHz to 1GHz? I am thinking of the pyramidal type absorber.
This is for research for partially lining a pre compliance radiated rf
emission EMC room.
Many thanks in advance.
Ian McBurney
Lead Compliance Engineer.
Allen & Heath Ltd.
Kernick Industrial Estate,
Penryn,
Cornwall. UK.
TR10 9LU.
Tel: 01326 370121
Email: ian.mcbur...@allen-heath.com
Allen & Heath Ltd is a registered business in England and Wales,
Company number: 4163451. Any views expressed in this email are those
of the individual and not necessarily those of the company. -
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