sxb416
Junior Member level 1
Hello!
I have been designing the high order sc filter for almost one month.
I can't get the prospective signal.I don't know why.
The following is my design flow.
1.I get the H(s) and H(z) transfer function using the matlab program
2.find the pole and zero to get the Q and the 2 order cascade form.
3. from the cascade expresion get the cap value
4.from the project object we get the SR,dc gain and UGB to design the amp
5.use the ideal amp the simulation the systerm ,it is ok.
6.but use the real amp, the signal is wrong.
why it is?
is anybody help me ?
I have used the Filter Solution software the get the cap value,does the software get the value after the scaling or not ?
where have i make the mistake?
I have been designing the high order sc filter for almost one month.
I can't get the prospective signal.I don't know why.
The following is my design flow.
1.I get the H(s) and H(z) transfer function using the matlab program
2.find the pole and zero to get the Q and the 2 order cascade form.
3. from the cascade expresion get the cap value
4.from the project object we get the SR,dc gain and UGB to design the amp
5.use the ideal amp the simulation the systerm ,it is ok.
6.but use the real amp, the signal is wrong.
why it is?
is anybody help me ?
I have used the Filter Solution software the get the cap value,does the software get the value after the scaling or not ?
where have i make the mistake?