I'm good at math and complex numbers and I understand the transfer function of the first order passive low pass filter.
When I add two stages of first order passive low pass filter to form a second order filter, The loading effect appears because the two stages have mutual relationship.
I would like to know How to drive the transfer function of the second order low pass filter taking in consideration the loading effect.
I think the following equation is for Ideal filters only:
Is there a link to website or a pdf that tells me how to get the transfer function of practical (real) filters, Please?
Thank you very much,
When I add two stages of first order passive low pass filter to form a second order filter, The loading effect appears because the two stages have mutual relationship.
I would like to know How to drive the transfer function of the second order low pass filter taking in consideration the loading effect.
I think the following equation is for Ideal filters only:
Is there a link to website or a pdf that tells me how to get the transfer function of practical (real) filters, Please?
Thank you very much,