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December 1999

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Subject:
From:
Ian Boyton <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Tue, 14 Dec 1999 06:47:12 PST
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text/plain
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text/plain (85 lines)
Anne

My previous outfit used 4 layer FR4 for a 2.45GHz oscillator cct. Topside of
board was heavily ground planed and a tinned plastic can was on the bottom
side. Tracking was std and frequency was trimmed by machine. I can't
remember the specified copper weight (1/2 ounce rings a bell) but it was
pretty tied in to the design.

Best Regards

Ian Boyton


>From: Anne Ledger <[log in to unmask]>
>Reply-To: "TechNet E-Mail Forum." <[log in to unmask]>,        Anne Ledger
><[log in to unmask]>
>To: [log in to unmask]
>Subject: [TN] 2.5 Gig design question
>Date: Tue, 14 Dec 1999 08:49:38 -0500
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>Sender: TechNet <[log in to unmask]>
>
>Good Morning and Happy Holidays Technet,
>
>This morning we have been asked to aid a designer trying to get 50 ohm
>impedance on
>a high frequency board.  It is in the neighborhood of 2.2-2.5 ghz.  His
>question is about
>best base material to use.  This goes beyond what I can tell him.  As
>always, any input
>is appreciated.
>
>Anne Ledger
>EMDS, Inc.
>
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