[SI-LIST] Re: Insertion Loss, Return Loss, ILD, UNi versus Dual stripline

  • From: "Ken Cantrell" <Ken.Cantrell@xxxxxxxxxxxxxxxx>
  • To: "Zabinski, Patrick" <zabinski.patrick@xxxxxxxx>, "Ken Cantrell" <Ken.Cantrell@xxxxxxxxxxxxxxxx>, "Haller, Robert" <rhaller@xxxxxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
  • Date: Thu, 5 Aug 2010 12:03:08 -0600

Patrick,
I'm sure we would too.  Your constraints matched the problem description,
mine did not.  I guess I was thinking about the simplest and least expensive
way to build it.

Ken

-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Zabinski, Patrick
Sent: Thursday, August 05, 2010 11:36 AM
To: Ken Cantrell; Zabinski, Patrick; Haller, Robert;
si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Insertion Loss, Return Loss, ILD, UNi versus Dual
stripline



> If you had equal dielectric thicknesses and constant permittivity as
> suggested in my previous post, the dual-strip would have less
> S21 wouldn't
> it?  ...

Yes; we would.  However, I considered Robert's statement that "... and
they are the Same Copper Geometry (say 4 mil line/7 mil space) and have
the same impedance, same DC resistance ...", which I took to imply that
he changed the dielectric thicknesses to compensate for the constant
line geometries.

I believe the posed question led us to apply different
interpretations/constraints, thus we ended up with different answers.
If we assumed the same conditions, we probably would end up with the
same result.

Pat


------------------------------------------------------------------
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


------------------------------------------------------------------
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: