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# EMI shielding in Space

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## EMI shielding in Space

(OP)
Hi all,

I would like to know more about EMI Shielding.
-    What are the main parameters of an electromagnetic wave (frequency/wave length, ...)?

-    What are the typical EM waves received by a space satellite?

-    How to calculate the thickness of the shielding?

-    The perimeters of holes in the shielding must be much smaller than the wave length, what is the order of magnitude of this difference?

Thanks

Gregoire

### RE: EMI shielding in Space

All good questions, but you should consult a qualified engineer or a good textbook.  This is not something to decribe in this type of forum.  "Space Mission Analysis and Design" would be a good starting point

### RE: EMI shielding in Space

(OP)
Thanks, I'll start with that!

### RE: EMI shielding in Space

here's a link to a cutoff waveguide calculator. It'll at least show you the size of a hole/square hole that starts to limit the frequencies.

http://www.wa1mba.org/WGCalc.htm

The rf loss thru a hole in a metal structure is greater if the hole has a metal tube attached to it.

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