High Frequency Models of BJT, MOSFET and Ckts

 When input signal to an amplifier is in the range of 10-100 KHz we use small signal-low frequency model of the transistor for analysis.



With increasing frequency 📈 , internal capacitance of the transistor starts affecting its performance strongly 📏 . A low frequency model cannot work well in this situation 🚧 .

To accommodate these performance changes of the transistor, a separate model is developed for high frequency operations.


In the following handwritten notes I have covered the most important topics in detail :

* 💡 High frequency model of BJT

* 💡 High frequency model of MOSFET

* 💡 Miller Effect

* 💡 Different approaches to do Frequency Analysis

* 💡 Input Capacitance and Output impedances

* 💡 Frequency response of differential circuits, cascaded stages, MOS cascode

Click the following link for the notes:

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