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simulation of an impedance step, Transistor -> Match Net. - RF
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ingo
Post subject: simulation of an impedance step, Transistor ->
Match Net. Posted: Fri Apr 28, 2006 1:23 pm
Lieutenant
Joined: Fri Apr 28, 2006 1:09 pm
Posts: 1
Hi together,
I wonder how to simulate follwing condition correctly:
I have a Transistor with a connection lead of 12 mm width.
My
first matching element has a width of 23mm.
I have a large signal
model of the transistor for my simulator (ADS).
Das anyone konw,
how to simulate the behaviour correctley?
Transistor -> Microstripline
(width 23mm),
or
Transisor -> Impedance Step (12mm
-> 23mm) -> Microstip (23mm)
Both simulatons show different
results.
Would be happy for the comments from you.
Ingo
Top
IR
Post subject: Posted: Fri Apr 28, 2006 3:43
pm
Site Admin
Joined: Mon Jun 27, 2005 2:02 pm
Posts: 373
Location: Germany
Hello Ingo,
The second option
which you mentioned, namely to use an impedance step is the right one.
Of course that both simulations show different results, because you
have a discontinuity in the impedance if you don't use an impedance
step, and therfore you get an impedance mismatch and poor return loss.
_________________
Best regards,
- IR
Posted 11/12/2012
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