[SI-LIST] R: Relationship between loss tangent and dielectric constant's frequency dependence
- From: <gianguida@xxxxxxxx>
- To: "Neo" <neoflash2008@xxxxxxxxx>, "List Si" <si-list@xxxxxxxxxxxxx>
- Date: Wed, 31 Mar 2010 11:45:58 +0200
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Hi,
the real and immaginary part of the permittivity are related each other =
trough the Hilbert trasformation
I have atatched a picture with the relation
=20
Unlucky my text book is in italian but I think that you will be able to =
find such relation also in other textbook
=20
Hope this helps
=20
Giancarlo
=20
________________________________
Da: si-list-bounce@xxxxxxxxxxxxx per conto di Neo
Inviato: mer 31/03/2010 4.23
A: List Si
Oggetto: [SI-LIST] Relationship between loss tangent and dielectric =
constant's frequency dependence
Hi,
This email's title is a bit long but it is exactly a question annoying =
me.=20
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.=20
For a material like FR4 or Rogers, their dielectric constants all change =
over frequency. And their loss tangents are also different.=20
Is there any inner relationship between the value of loss tangent and =
how the dielectric constant (real part) changes over frequency?
Thanks,Neo
=20
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List technical documents are available at:
http://www.si-list.net <http://www.si-list.net/>=20
List archives are viewable at: =20
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
=20
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List technical documents are available at:
http://www.si-list.net
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
Other related posts:
