reza064
Newbie level 6
I found a power transistor that is broadband internally matched FET from Toshiba company. I found it’s S-parameter file(s2p file block) from Toshiba company’s internet site.
I simulate it with S-parameter simulation of ADS with two SP-Probe for impedance watching of it like this:
And the results impedance (in right and left of SP_Probe) are here, too.
Please,tell me why an internally matched FET is not matched? And what should I do?
I simulate it with S-parameter simulation of ADS with two SP-Probe for impedance watching of it like this:
![](https://obrazki.elektroda.pl/8006976800_1360136797_thumb.jpg)
And the results impedance (in right and left of SP_Probe) are here, too.
![](https://obrazki.elektroda.pl/4676437200_1360136797_thumb.jpg)
Please,tell me why an internally matched FET is not matched? And what should I do?