[SI-LIST] Re: Peaks and Nulls in spectral density
- From: "Dhamija, Naresh" <Naresh.Dhamija@xxxxxxx>
- To: "aaditya.kandibanda@xxxxxxxxx" <aaditya.kandibanda@xxxxxxxxx>, "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
- Date: Sat, 14 Jul 2012 07:48:04 +0530
Hi Aaditya,
In return loss, there can be a standing wave, even if there small
discontinuities across the line. The standing wave has peaks and troughs spaced
at lambda/2 apart. If you map it frequency domain, you will get those frequency
points.
It won't be there in insertion loss, but in S21 plot, I guess you have used
term insertion loss for S21.
Consider a lossless situation, S21 is nothing but sqrt (1 - S11^2). So you will
see the effect of S11 peaks and troughs in S11 graph also.
Regards
Naresh
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Aaditya Kandibanda
Sent: Friday, July 13, 2012 10:04 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Peaks and Nulls in spectral density
Hello Experts,
Why are there peaks and nulls in spectral density and in insertion/return
loss measurement graphs?
Thanks and regards
Aaditya.
------------------------------------------------------------------
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 forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
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 forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
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:
