coefficient of the filter!~!

[neo]

hi, gentlemen. i am designing a 8th-order lowpass cheby1 filter for my first career, i've got the transfer function(i call this function one) after approximation and denormalization based on the specification. i wanna choose the Gm-c type for my realization and i am looking for some proper topology for that. could u tell me how to get the coefficient of the Gm and the capacitance after i've worked out the network function(i call this function two) of my topology? compare function one and two and then solve the equations?

 

[jswei303]

Hi,
I think you can get 8-th order Ladder filter cofficient.
And use Gyrator known-how to transfer the cofficients to what you want!