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Ted Mooney, P.E. RET
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Copper Plating Thickness for RF applications
My company is working on a millimeter wave imaging system for military applications. On the front end we have what is basically a waveguide plate. A bunch of strategically placed waveguide flanges machined into an Aluminum plate. Because Aluminum is a poor conductor at the frequency range we are dealing with (a 3GHz band around 35GHz) I am trying to find out what thickness of copper to plate onto the aluminum plate to increase function. Is there any precedence for this? If it would help, a thickness that would successfully shield components should be sufficient for our application.
Thank you in advance to anyone who helps, I greatly appreciate any help you can give me.
Electrical Engineer - Newark, DE, USA
December 16, 2009
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