Rules | Recent posts | topic RSS | Search | Register  | Log in

Conductivity Vs Loss Tangent

 
Post new topic  Reply to topic    EDAboard.com Forum Index -> RF, Microwave, Antennas and Optics
Author Message
mesfet



Joined: 04 Jan 2002
Posts: 155
Helped: 1


Post19 Oct 2003 8:04   Conductivity Vs Loss Tangent

Hi All,

Anyone has idea on how to convert conductivity to loss tangent or vice versa?? For a si wafer, with conductivity 8S/m, what is the loss tangent at 10GHz??

Mesfet+
Back to top
mogwai



Joined: 21 Jan 2003
Posts: 331
Helped: 33


Post20 Oct 2003 11:20   Re: Conductivity Vs Loss Tangent

Some definitions:

e_c = e' - je'' - complex permittivity
tan_d = e''/e' - loss tangent
s = omega*e'' - conducativity (alternating)

From the above equations:

s = tan_d*omega*e'
where,

omega: frequency of use
e': real part of complex permittivity


Hope this helps.

enjoy!
mogwai.

ps. References are:
Paris-Hurd "Basic Electromagnetic Theory"
Balanis "Advanced Engineering Electromagnetics" and
von Hippel "Dielectric Materials and Applications"
Back to top
Post new topic  Reply to topic    EDAboard.com Forum Index -> RF, Microwave, Antennas and Optics
Page 1 of 1 All times are GMT + 1 Hour


Abuse
Administrator
Moderators
topic RSS 
sitemap