How to calculate the net value of A,B,C and D for two cascaded networks?

[electronics_kumar]

i'm having ABCD parameters for two networks..for a cascaded networks how to calculate the net value of A,B,C and D .for example A1 is 3 and A2 is 4..what is the taotal value of New circuit A after casscading the two...

 

[lavitaebelle]

regarding ABCD

For a cascaded network you just multiply the two ABCD matrices.

So A(new)=A1A2+B1C2 and so on.

 

[v_c]

Re: regarding ABCD

The result you are looking for is on page 1 of this document
**broken link removed**

Best regards,
v_c