tzoom84
Newbie level 5
Question that popped in my head. Refer to a statement from Cisco regarding interference on 2.4 GHz signals from this page:
I'm curious what physically about a metal fence causes interference when the spacing is on the order of a 1/2 or 1/4 wavelength? At first I was considering the concept of a Faraday cage where the cage itself effectively absorbs the electromagnetic wave (using the term "absorb" loosely). But doesn't the cage need to be enclosed to work? If that's the case, I'm confused how the fence (which may not be enclosed) causes interference. Or do the same "absorption"-like principles apply with the fence regardless? Would it behave differently if it was a solid thin wall of the same material?
Thanks again!
"Chain link fence, wire mesh with 1 - 1 1/2" spacing acts as a 1/2" wave that blocks a 2.4 GHz signal."
I'm curious what physically about a metal fence causes interference when the spacing is on the order of a 1/2 or 1/4 wavelength? At first I was considering the concept of a Faraday cage where the cage itself effectively absorbs the electromagnetic wave (using the term "absorb" loosely). But doesn't the cage need to be enclosed to work? If that's the case, I'm confused how the fence (which may not be enclosed) causes interference. Or do the same "absorption"-like principles apply with the fence regardless? Would it behave differently if it was a solid thin wall of the same material?
Thanks again!