Hello,
In the question I suppose to find the -3dB point of the amplifier stages (current). I found an expression for the transfer function, and now I need to find the -3dB point. My transfer function expression is 1/(constant+Cs/gm). My idea to find the -3dB point is:
1. Assuming a low pass filter, I'll find the value of the transfer function when s=0, convert to dB, and subtract 3dB from it. Then convert back to decimal.
2. Then equate the obtained value to the general transfer function to find the value for s. But I'm not sure if I should square both sides (for magnitude) or not.
I'm not sure if this is the correct path, any thoughts?
In the question I suppose to find the -3dB point of the amplifier stages (current). I found an expression for the transfer function, and now I need to find the -3dB point. My transfer function expression is 1/(constant+Cs/gm). My idea to find the -3dB point is:
1. Assuming a low pass filter, I'll find the value of the transfer function when s=0, convert to dB, and subtract 3dB from it. Then convert back to decimal.
2. Then equate the obtained value to the general transfer function to find the value for s. But I'm not sure if I should square both sides (for magnitude) or not.
I'm not sure if this is the correct path, any thoughts?