[SI-LIST] Re: Relationship between loss tangent and dielectric constant's frequency dependence
- From: Raul Lozano <raull@xxxxxxxx>
- To: List Si <si-list@xxxxxxxxxxxxx>, Neo <neoflash2008@xxxxxxxxx>
- Date: Tue, 30 Mar 2010 20:13:26 -0700 (PDT)
Neo,
I believe you're looking for this:
Kramers-Kronig relationship
NMA-850 Frequency-dependent Material Properties
http://www.bethesignal.net/bogatin/nma850-frequencydependent-material-properties-p-430.html?cPath?
Regards,
Raul
--- On Tue, 3/30/10, Neo <neoflash2008@xxxxxxxxx> wrote:
From: Neo <neoflash2008@xxxxxxxxx>
Subject: [SI-LIST] Relationship between loss tangent and dielectric constant's
frequency dependence
To: "List Si" <si-list@xxxxxxxxxxxxx>
Date: Tuesday, March 30, 2010, 7:23 PM
Hi,
This email's title is a bit long but it is exactly a question annoying me.
I'm trying to find out whether there is a proven relationship between a
dielectric material's real part and imaginary part. Imaginary part is
dielectric loss tangent. And real part is the dielectric constant.
For a material like FR4 or Rogers, their dielectric constants all change over
frequency. And their loss tangents are also different.
Is there any inner relationship between the value of loss tangent and how the
dielectric constant (real part) changes over frequency?
Thanks,Neo
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