Sujet : Re: Mirror as ground plane
De : bill.sloman (at) *nospam* ieee.org (Bill Sloman)
Groupes : sci.electronics.designDate : 29. Nov 2024, 05:40:11
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <vibgjk$um3v$1@dont-email.me>
References : 1 2 3 4
User-Agent : Mozilla Thunderbird
On 29/11/2024 2:16 am, john larkin wrote:
On Wed, 27 Nov 2024 22:08:13 -0500, legg <legg@nospam.magma.ca> wrote:
On Wed, 27 Nov 2024 12:53:01 -0800, john larkin <jl@glen--canyon.com>
wrote:
>
On Wed, 27 Nov 2024 08:53:41 -0500, legg <legg@nospam.magma.ca> wrote:
>
>
Anyone had experience using metalization on glass (mirror)
as a ground plane or shield?
>
Any data on conductivity etc?
>
RL
>
Why use glass? Why not copperclad FR4?
>
Rugged repeated use - subjected to fire and impact.
>
Will be possibly burning FR4 in contact with it.
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A work surface.
>
RL
Stainless steel is pretty conductive.
But it's covered in a thin coherent layer of chromium oxide, which is pretty conductive, but to a degree that depends on the pH of the monolayer of water adsorbed on the surface. Some of my colleagues once wanted to use it for the electrodes in a conductivity meter and it messed up the accuracy for high-conductivity water (2% NaOH in the worst case - not exactly water as you want to meet it).
-- Bill Sloman, Sydney
Mirror as ground plane
Re: Mirror as ground plane
