[SI-LIST] Re: Port Extension Algorithm

Port extensions simply add in an amount of electrical length that the
user specifies.  The phase is mathematically 'un-wound' over frequency
based on that setting.  No losses or other problems are accounted for.
The assumption is a 'perfect Zo transmission line of electrical length
x'.

Oftentimes it is plenty good enough.

If you need more than that, you need to de-embed the structure in
question with data from either simulation or measurements.

--
Mark Randol, RF Evaluation & Application Engineer
ON Semiconductor
901 S. Mopac Expressway
Barton Oaks 4, Suite 343
Austin, TX 78746
512-329-5640 (voice), 512-329-8151 (FAX)
=20
=20

> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx=20
> [mailto:si-list-bounce@xxxxxxxxxxxxx] On Behalf Of=20
> codymiller@xxxxxxxxxx
> Sent: Monday, July 30, 2007 2:23 PM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Port Extension Algorithm
>=20
> I would like to understand the algorithm used when the port=20
> extension mode is used on a VNA. I have some S11 data that=20
> was previously taken and would like to apply a port extension=20
> to it. Any thoughts?
>=20
> Thanks,
> Cody Miller
------------------------------------------------------------------
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:
http://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:     
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu

Other related posts: