[SI-LIST] Re: Port extension with VNA

Leon,
Many thanks for your reply. Since you mentioned there is much difference for 
long fixture with these two calibration methods, which one is more accurate? Is 
there any paper talking about this?
Thanks
Jun



--- On Wed, 6/23/10, Leon Wu <Leon.Wu@xxxxxxxxxx> wrote:

From: Leon Wu <Leon.Wu@xxxxxxxxxx>
Subject: RE: [SI-LIST] Port extension with VNA
To: "jun li" <lijun_hit@xxxxxxxxx>, si-list@xxxxxxxxxxxxx
Date: Wednesday, June 23, 2010, 7:02 PM

Hi Jun,

Based on my experience, 'port extension' function is just for the phase
but not for the magnitude.
And if your fixture is long enough or have large discontinuities, the
difference becomes large.

Thanks and Regards,
Leon
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of jun li
Sent: Thursday, June 24, 2010 9:34 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Port extension with VNA

Hi, allIs it necessary to use SOLT calibration for port extension? In
theory, TRL calibration should work, too. But we got far different value
with these two different calibration method.
ThanksJun

      

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