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January 1999

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From:
이민수 과장 전자 본사연구1팀 <[log in to unmask]>
Reply To:
TechNet E-Mail Forum. <[log in to unmask]>
Date:
Fri, 15 Jan 1999 10:52:15 +0900
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                Hi, netters!
                As a producer of CCL, we routinely check dielectric
constant (Dk) of our laminates at 1 Mhz
                Recently, some customers want Dk at Ghz range, which we can
not measure.
                Does anybody know reliable Dk testing service for laminates
at Ghz range?
                We have HP instrument which has the capability of measuring
Dk up to 10 Ghz.

                However, we just do not know how to measure Dk of our
products, laminates.
                We heard that a specially designed fixture is needed for
the laminate.
                Did anyone measure Dk of PCB laminate at Ghz ?
                What kinds of fixture did you use?
                Or is there any hands-on training course about Dk
measurements?

                Minsu Lee
                Doosan Electro-materials Co.

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