to create and rate content, and to follow, bookmark, and share content with other members.
FW: vrf (Offtopic) Mismatch error reduction due to attenuator pad calculator?
Question asked by
on Sep 30, 2006
Show 0 Likes
No one else has this question
Mark as assumed answered
This content has been marked as final.
Show 1 comment
(Required, will not be published)
Sep 29, 2006 10:04 AM
Does anyone know of anything or any way available to calculate the mismatch uncertainty improvement that you can get from using an attenuator pad? It is generally accepted that an attenuator pad with a good VSWR in front of a load with a poor VSWR will decrease the mismatch error, but I can't find anything that quantifies the improvement. Best I can find are broad statements like "a well matched attenuator pad with very low VSWR will virtually eliminate uncertainty due to mismatch". Hard to put that into a mathematical error analysis. Especially when "perfect" attenuators are so hard to find.
For example if you have a load with a 2:1 VSWR being driven from a source with a 1.5:1 VSWR the mismatch uncertainty is +0.56dB/ -0.6dB. What if I insert a "real world"Â 2dB pad with a 1.25:1 VSWR what the resultant mismatch uncertainty now be and how can I calculate it for various real world values?
Thanks for any help,
To subscribe please send an email to: "email@example.com" with the word subscribe in the message body.
To unsubscribe send a blank email to "firstname.lastname@example.org".
To send messages to this mailing list, email "email@example.com".
If you need help with the mailing list send a message to
Search the "unofficial vrf archive" at "www.oswegosw.com/vrf_archive/".
Show 0 Likes
Retrieving data ...
N9344C Frequency range
DSOX2024A stuck in endless bootup loop
I have the Agilent DSO-X 2002A scope and when turning it on seems that the scope freezes after starting a boot up routine. The following all happens within a few seconds after pressing the power switch. Light up yellow Ref soft key arrow Light up yell
Changing Start-up directory of the ADS 2015.1
HP 8590b: no boot after replacing battery