I'm self learning amplifier design in ADS. The problem in picture(link).
The smith chart in a green box is the correct answer. The smith chart I simulated, however, is inconsistent with the values of "cir_center" and "cir_radius", even though they use the same S-parameters.
Also, I tried to find the center of the stability circle manually. For example, the manually calculated source circle is at Cs=2.369/82.645, but this magnitude is off compared to "cir_center", which is the correct answer. I can't find the reason why this difference occurs.
Any help is appreciated, thank you.
Edited by: rlyc on Jun 25, 2013 1:25 PM
The smith chart in a green box is the correct answer. The smith chart I simulated, however, is inconsistent with the values of "cir_center" and "cir_radius", even though they use the same S-parameters.
Also, I tried to find the center of the stability circle manually. For example, the manually calculated source circle is at Cs=2.369/82.645, but this magnitude is off compared to "cir_center", which is the correct answer. I can't find the reason why this difference occurs.
Any help is appreciated, thank you.
Edited by: rlyc on Jun 25, 2013 1:25 PM