Frequency response of single and multi stage transistor amplifiers—a simple method of obtaining closed-form solutions
Mukunda B. Das, H. Farrokh · International Journal of Electronics · 1975
Internal feedback in transistors makes it difficult to calculate the amplifier frequency response in a closed form and the task is often performed numerically with the aid of a computer. It is the purpose of this communication to show that by careful use of the two-port y-parameter approach, closed-form solutions can be readily obtained which are easy to interpret and differ negligibly from the exact solutions. Results obtained from closed-form solutions and computer calculations on typical single and two-stage amplifiers are presented for comparison.