At 09:27 AM 1/29/2003 +0100, Zweigart, Siegmund wrote:
>         Hello all
>
>We got a request from a potential customer regarding high frequency
>materials.
>The frequency on the product will be 24- 26 GHz.
>Is there a mainstream PCB base material for this frequencies?

Lot's of choices. But the answer as always is "it depends" on your specific
application.

Need to consider a number of factors including:
1. degree of material stability and rigidity required (many uwave
dielectrics are unsupported, unstable dimensionally and unreliable in
multilayer stackups)
How large an image will it be?
Will it be a simple doublesided board or a multilayer?
2. Low or high power?  Is thermal dissipation critical?
3. Does the designer have an idea how low a loss tangent is desired/required?
4. Is higher or lower Dk (Er) preferred by the EE?

Dwight



>What are the pro and cons of the different materials?
>Any feedback is welcome.
>
>Best regards
>
>Siggi
>
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