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From: Martin Brown <'''newspam'''@nonad.co.uk>
Newsgroups: sci.electronics.design
Subject: Re: Mirror as ground plane
Date: Wed, 27 Nov 2024 14:18:04 +0000
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On 27/11/2024 13:53, legg wrote:
> 
> Anyone had experience using metalization on glass (mirror)
> as a ground plane or shield?
> 
> Any data on conductivity etc?

At what frequency? Your problem will be mainly making a good physical 
contact with the mirror. Aluminium has pretty good conductivity but an 
annoying oxide coat. Gold sputtered mirrors would be easier to solder.

Indium is used for ground planes that you can see though. Radio 
astronomers tend to use glass with fine copper mesh embedded in it to 
keep the control room electronics from drowning out natural signals.

-- 
Martin Brown