Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would
be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate
that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views.
It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if
you would like to post something on RF Cafe's
page, please do.
Below are all of the forum threads, including all
the responses to the original posts.
Post subject: MWOffice simulation of DIode Input Impedance
Unread postPosted: Thu Sep 30, 2004 2:57 am
Joined: Mon Sep 06, 2004 5:43 am
A question on using
Microwave Office. I don't have a spectrum analyzer, and would like to
simulate a schottky diode (doubler) chip in microwave office.
manufacturer Agilent provided SPICE parameters, but is this enough?
2) And do I use the Z parameter in linear simulation?
I also tried
simulating it using an equivalent linear circuit given, but the results
were vastly different from using SPICE parameters.
What is the
best way of doing it? WOuld completely appreciate (REALLY) the help.
Post subject: Non Linear
Unread postPosted: Thu Sep 30, 2004 7:51 am
Since a diode doubler
is highly non-linear you should use the spice model for your simulations.
You then woud then wan tto use a harmonic balance simulation to determine
the impedance. The linear Z-parameters won't help unless you know that
they were measured at large signal at the same operating point. The
spice model is your best bet.
Post subject: more questions
Unread postPosted: Thu Sep 30, 2004
Joined: Mon Sep 06, 2004 5:43
Thank you for the tips, but im really slow at this.
DO I select the
Z comp parameter under NonLinear>PArameter?
WHy does this option onlygive me the magnitude.
appreciate the help!