How the surfaces in the anechoic chamber provides perfect match to the signals?

[RFROCKER]

How the surfaces in the anechoic chamber provides perfect match to the signals(i.e completely absorbing)..with what material they r made of?

 

[plusminus]

Re: ANECHOIC CHAMBER

For emc: ferrite.

 

[Azulykit]

Re: ANECHOIC CHAMBER

The cones you see in a chamber are usually a urethane foam impregnated with carbon so that waves are attenuated. The lowest frequency of operation is where the cones are on the order of a wavelength or two.


Look for more information with companies like Rantec, Advanced Electromagnetics, Cumming, and the like.

 

[erick_himura]

Re: ANECHOIC CHAMBER

my apology, if there someone know how to design an anechoic chamber? I'm currently designing an anechoic chamber with the material made from foam and ferrit but it difficult to design the chamber. i need some reference related to anechoic chamber. thanx.

BR,
Erik Ng

 

[Azulykit]

Re: ANECHOIC CHAMBER

Call advanced Electromagnetics and ask for Gabe Sanchez. He may be willing to provide guidance.

 

[plasma]

Re: ANECHOIC CHAMBER

look at this books and papers

https://eu.wiley.com/WileyCDA/WileyTitle/productCd-0471208108.html
https://www.sae.org/technical/papers/1999-01-1832
**broken link removed**
**broken link removed**
https://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=117905

pl

 

[erick_himura]

ANECHOIC CHAMBER

thanks for your reply. i check the link, and find that all of it must purchase the paper. but i already have some books from the links.
i try to find some related papers for free but find zero, so maybe i must design it from wiley book only.