Two definitions of material dissipation factor

  • Thread starter senmeis
  • Start date
  • #1
63
1
Summary:
material dissipation factor
Hi,

I have seen two versions of definitions of material dissipation factor Df:

The first one:
Dk (dielectric constant) = K = relative permittivity = ɛ -jɛ’ , ɛ = energy stored and ɛ’ = energy lost.
Df (dissipation factor/loss tangent) = ratio of ɛ’ and ɛ

The second one:
On slide 8 of webinar http://www.globalcommhost.com/roger...17_JC_microstrip_coplanar_stripline_final.pdf:
The imaginary component of complex permittivity is Df (dissipation factor).

Which one is correct?
 

Answers and Replies

  • #2
Lord Jestocost
Gold Member
705
500
The first definition is correct. Regarding the second one, I think it's just a sloppy formulation.
 

Related Threads on Two definitions of material dissipation factor

Replies
7
Views
1K
  • Last Post
Replies
6
Views
2K
Replies
2
Views
4K
Replies
3
Views
1K
Replies
2
Views
1K
Replies
10
Views
1K
  • Last Post
Replies
1
Views
5K
Replies
4
Views
1K
  • Last Post
Replies
1
Views
6K
Top