I am studying RF circuit. I read the book "Elsevier  Telecommunication Circuits & Technology  2000".The page image is attached. I know f= 1/2*pi*(Ro//RL) C where Ro is output resistance of transistor and RL is load resistor .
How I try is shown below
It look like 3C for R3//R5//R6//R7 and f' = 1/2pi*3C*(R3//R5//R6//R7),
there is another C for Re and f" =1/2*pi*RC ,
f= 1/(2pi* RC *(1/{(RC)^2 + (R3//R5//R6//R7)}))
I try to solve for equation(1.3) , I still cannot get that answer. Can anyone help me or hint me to do .thanks.
How I try is shown below
It look like 3C for R3//R5//R6//R7 and f' = 1/2pi*3C*(R3//R5//R6//R7),
there is another C for Re and f" =1/2*pi*RC ,
f= 1/(2pi* RC *(1/{(RC)^2 + (R3//R5//R6//R7)}))
I try to solve for equation(1.3) , I still cannot get that answer. Can anyone help me or hint me to do .thanks.
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